Renesas RTKA489204DK0000BU User manual

Evaluation Kit Manual
R16UZ0019EU0100 Rev.1.00 Page 1
Sep 23, 2021 © 2021 Renesas Electronics
Overview
The RTKA489204DK0000BU is an evaluation kit that
facilitates testing of the RAA489204 Li-ion battery
pack analog front-end ICs. The RAA489204 monitors
cell voltage and temperature, and provides 14-bit
digital values, cell balance control, and significant
fault detection. The RAA489204 also contains daisy
chain hardware to provide robust board-to-board
communication.
The evaluation kit operates as a stand-alone monitor
or, combined with additional boards, creates a daisy
chained application. One board operating alone
allows testing of up to 14-cell series-connected Li-ion
battery packs by using a standard USB interface to a
PC. Up to 30 boards cascade (with daisy chain
communication from board-to-board) to test systems
with up to 420 cells.
Specifications
This board is configured and optimized for the
following operating conditions:
▪V
BAT = 12V to 65V
▪ Cell voltage -5V to +5V (Note: No cell voltage can
go below pack ground or above 65V.)
▪ External inputs ExT1 to ExT4 = 0V to 2.5V
(external temperature measurement thermistors on
board)
▪ Two GPIO ports to monitor temperature (default) or
general-purpose input or output.
Board Contents
The RTKA489204DK0000BU evaluation kit contains:
▪ RTKA489204DE0000BU RevB evaluation board
▪ MCB_PS4_Z multi-cell power supply test board
▪ RTKA489204MICROZ communications board
▪ USB cable that connects PC to evaluation board
▪ One twisted pair daisy chain cable
▪ One RJ45 daisy chain cable
Features
▪ Supports both stand-alone and daisy chained
configurations
▪ Daisy chain capacitively coupled (direct board-to-
board or cable connected) or transformer coupled
cable connected (capacitor or transformer selected
by jumper)
▪ External cell balance operation
▪ Cell voltages monitored after balance resistor to
meet safety fault detection goals.
▪ GUI provided export option for generation of
detailed register, voltage, and/or SPI
communications log files
▪ USB microcontroller dongle runs HID firmware for
enumeration and communications with Windows
platforms
▪ Evaluation kit includes a resistor divider power
supply board for cell voltage generation
Board Requirements
The following instruments are required to perform
testing:
▪ 63V/1A adjustable power supply
▪ Wires to connect power supply to MCB_PS4_Z
board
▪ Precision multimeter
▪ Windows computer with USB port
RTKA489204DK0000BU

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Contents
1. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Quick Hardware Setup Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Quick GUI Setup Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2. Using the RAA489204 GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.1 Main GUI Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2 Main GUI Screen Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 Fault Status Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.4 Fault Setup Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.5 Cell Balance and Setup Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.6 CB Value 1 Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.7 CB Value 2 Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.8 CB Status Reg 1 Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.9 CB Status Reg 2 Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.10 User Registers Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3. RTKA489204DE0000BU Evaluation Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.1 PCB View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.2 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4. PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.1 PCB Design Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.2 Component Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.3 Evaluation Board Design Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.4 Questions and Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.5 Errata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5. Typical Performance Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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RTKA489204DK0000BU Evaluation Kit Manual
1. Functional Description
The RTKA489204DK0000BU evaluation kit in use with the associated GUI allows you to become familiar with the
instructions, capability, and operation of the device. A single RAA489204 Li-ion battery manager IC supervises up
to 14 series-connected cells. The device provides accurate monitoring, cell balancing, and extensive system
diagnostics functions.
The kit enables you to activate and data log voltage and temperature measurements. Cell voltages are supplied
using a resistor ladder network in the MCB_PS4_Z multi-cell power supply test board.
The RAA489204 has three cell balancing modes incorporated: Manual Balance mode, Timed Balance mode, and
Auto Balance mode. The Auto Balance mode terminates balancing functions when a charge transfer value
specified by the host microcontroller has been met.
Note: Cell balancing requires the removal of the MCB_PS4_Z multi-cell power supply test board and requires the
attachment of either cells or a power supply with the capability of sourcing the cell balance current.
The PCB has the components populated for external cell balancing. The external balance circuit provides a
balance current of 40mA at a cell voltage of 4V.
The RAA489204 communicates to a host microcontroller through an SPI interface and to other RAA489204
devices using a robust, two-wire daisy chain system. Using the evaluation kit requires no special settings to select
between a stand-alone system and a daisy chain system, and no special settings are required to select the top
device. The master daisy chain IC is selected by connecting the RTKA489204MICROZ board.
By default, the daisy chain is configured for capacitor coupled communication. By moving jumpers, the daisy chain
communicates through transformer coupling. All the components for both capacitor and transformer coupling are
provided on the PCB.
Figure 1. Typical Application
RTKA489204MICROZ Board
USB
PC
(GUI)
RAA489204
DHi1
DLo1
VG2
VG2
VC14
VC13
VC12
VC11
VC10
VC9
VC8
VC7
VC6
VC5
VC4
VC3
VC2
VC1
VC0
VSS
VBAT
PACK
RAA489204
DHi2
DLo2
To Other Devices
Monitor Board Monitor Board
DHi2
DLo2
VG1
VG1
VC14
VC13
VC12
VC11
VC10
VC9
VC8
VC7
VC6
VC5
VC4
VC3
VC2
VC1
VC0
VSS
VBAT
(Optional)
PACK
(Daisy Chain - Optional)(Master or Stand-Alone)
14 Cells
14 Cells
VG1
SCLK
DOUT
DIN
CS
DATA READY
FAULT
EN
CMODE
RTKA489204DE0000BU RevB Board
Daisy Chain Mid or Top (Optional)
Master or Stand-Alone
RTKA489204DE0000BU RevB Board
Shaded items
Included in Kit

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RTKA489204DK0000BU Evaluation Kit Manual
Connecting multiple Renesas boards allows you to set up communications and measurement capability of many
packs and up to 420 battery cells. However, review the Quick Hardware Setup Guide because there are safety
concerns as voltage levels increase with multiple packs.
Note: The RAA489204 is an industrial/commercial version of the Automotive ISL78714. For this reason, the
RAA489204 uses the same GUI and bare evaluation board PCB as the ISL78714, so images of the GUI and
PCBs within this document may include either product number. The RAA489204 is not intended for Automotive
applications.
1.1 Software Installation
Note: The software version supplied with the kit only supports the RAA489204 device.
Install the GUI software with the following steps:
1. Unzip the RAA489204 User Interface Rev9.0 folder to the local drive.
2. Confirm that the folder contains:
a. RAA489204 user interface Rev9.0.exe
b. ISLABHIDDevice.dll
c. DeviceID.txt
d. LabVIEW85RuntimeEngineFull.exe
3. Install LabVIEW85RuntimeEngineFull.exe.
The RAA489204 User Interface Rev9.0 is now available to use.
1.2 Quick Hardware Setup Guide
1.2.1 Single Board
Set up the hardware with the following steps:
1. Before connecting the power supply to the boards, set the power supply voltage to 49V (3.5V per cell). If there
are fewer cells being tested, reduce the power supply voltage so that it equals 3.5V times the number of cells.
2. Connect and check the power supply to the MCB_PS4_Z board. The positive terminal is J5/J5A and the
negative terminal is J6/J6A. Check that the voltages on the J2 connector are 3.5V from pin to pin. Ground should
be on the pin labeled “0” and “G”.
If there is no voltage on J2, check that the switches are all set to ON. Also, confirm that there is no jumper on
JP2 of the MCB_PS4_Z board to select the 14-cell option, because this puts the proper voltage on the VBAT
pin.
3. Turn off the power to the power supply.
4. Connect RTKA489204DE0000BU connector J3 to the MCB_PS4_Z board connector J1.
Check the jumpers and switches. Ensure the RTKA489204DE0000BU board is configured so that LEDEN
contains a jumper.
5. For stand-alone operation, the Daisy jumpers can be removed or connected to the CAP position (see Figure 2).
Connect the microcontroller board (RTKA489204MICROZ) connector JP3 to the RTKA489204DE0000BU
board connector JP6 (see Figure 3).

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6. Connect the USB port of the PC to the USB port of the RTKA489204DE0000BU board.
7. Turn on the MCB_PS4_Z power supply. Two green LEDs (V3P3 and V3P3x) turn on to indicate that the LDO
regulators on the RAA489204 are operating.
8. Run the GUI (see Quick GUI Setup Guide.) Use the software to connect the board. Because there is a
watchdog timer on the RAA489204 that waits close to a minute before powering down, perform the following
steps with the GUI as soon as possible after powering the boards.
a. Click Roll Call. (The GUI should have a green indicator and show the number of connected boards.)
b. Click WDTM to MAX. (This sets the watchdog timers to a maximum setting so that there is time to evaluate
the system.)
9. When the RTKA489204DE0000BU is powered, there should be instances of the following board voltages:
V3P3 = 3.3V ±3%
VCC = ~3.3V ±5% (a little lower than V3P3)
V2P5 = 2.5V ±2%
VREF = 2.5005V ±0.5mV
10. See the Quick GUI Setup Guide. Use the software to read the cell voltages.
11. Compare the voltages at the board input with the readings provided by the GUI. Use a meter to measure each
of the cell voltages on the RTKA489204DE0000BU board J7 connector, because the MCB_PS4_Z board may
not accurately divide the voltages into equal 3.3V steps. Also, measure the voltage from cell to cell, not cell to
ground to get the best accuracy. The meter reading and the GUI readout voltages should closely match (within
±2.5mV at 3.3V and room temperature).
Figure 2. Daisy Jumper Settings

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Figure 3. RTKA489204DK0000BU RevB Single Board Setup
RTKA489204MICROZ Board
ON OFF
Switches
12V
to
63V
OR 1 OR 2
24V Supplies
MCB_PS4_Z Board
RTKA489204DE0000BU
RAA489204
Disable
Options
To PC
Daisy Chain
Down/Up
Jumpers
RAA489204
LED Enable

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1.2.2 Daisy Chain
Set up the hardware with the following steps:
1. Before connecting the power supply to the boards, set the power supply voltage to 49V (3.5V per cell). If fewer
cells are being tested, reduce the power supply voltage so that it equals 3.5V times the number of cells.
2. Connect the power supply to all MCB_PS4_Z boards in parallel, that is, all ground pins are tied together and
all VBAT pins are tied together. See Figure 4 (Option A). This is not typical of a battery installation, where the
ground of one board is the VBAT of another, but it easily facilitates testing of the communication and allows a
safer environment for initial testing. Alternatively, power supplies can be stacked to better represent an actual
implementation. See Figure 4 (Option B or C).
USE CAUTION when connecting the MCB_PS4_Z boards in series, because voltages quickly reach
hazardous levels. BE CAREFUL!
A convenient and safe way to evaluate multiple daisy connected boards is to connect the ground pin of
all MCB_PS4_Z boards together, so no board has more than 63V present.

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There should be one MCB_PS4_Z board for every evaluation board. The positive terminal of the MCB_PS4_Z
board is J5/J5A and the negative terminal is J6/J6A. Check that the voltages on the J3 connectors of all boards are
3.3V from pin to pin. Ground should be on the pin labeled “0” or “GND”.
3. Turn off the power to the power supply.
4. Connect each RTKA489204DE0000BU board connector J3 to an MCB_PS4_Z board connector J1.
Figure 4. RTKA489204DK0000BU Battery Cell Emulation MCB-PS4-Z Alternative Connections
CAUTION: STACKING POWER SUPPLIES RESULTS
Stack the supplies to mimic typical Battery voltages
IN DANGEROUSLY HIGH VOLTAGE.
VBAT Voltage
VBAT +
VBAT -
VBAT 3 +
A: Preferred Test Connection
This is the simplest and safest connection for initial testing,
system evaluation or software review or generation,
because it has the lowest voltage and minimum number of
connection wires.
B: Alternate Test Connection
This alternative also keeps cell voltages within safe limits,
but allows the evaluation of system performance with
different voltages on each device input. This allows an
analysis to more easily confirm that the RAA489204
devices are not all reading the same values.
C: Battery Typical Connection
This connection stacks power supplies to generate a pack
voltage of up to 189V. This is an unsafe condition, so care is
needed when working with this setup. It is also important to
check on whether the supplies can handle terminal voltages
this high above ground. This connection is not
recommended, because it offers little benefit over
connecting actual cells, in which case, the MCB_PS4_Z
boards are not needed.
AB
C
VBAT 2 +
VBAT 2 -
VBAT 1 +
VBAT 1 -
Each VBAT Voltage
VBAT 3 +
VBAT 3 -
VBAT 2 +
VBAT 2 -
VBAT 1 +
VBAT 1 -

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5. Connect the daisy chain by using either capacitor isolation or transformer isolation.
a. With capacitor isolation, the boards connect together directly (Figure 5) or with cables (Figure 6), or they
connect using a combination of direct and cable connections.
b. With transformer isolation, the boards are connected as shown in Figure 7. When using cables, connect
the wires as shown in Table 1. (Note: The boards are configured to prevent both direct connection and
twisted pair cable connection on the same port.)
6. Check the jumpers and switches on the boards. Because this is a daisy chain configuration, each board should
be configured as follows:
a. LEDEN contains a jumper.
b. The master (the board connected to the RTKA489204MICROZ board) must have the DAISY DOWN
jumpers removed or set to the CAP setting.
c. For the Master UP jumpers and all other boards, the DAISY jumpers can be set as CAP or XFMR
(transformer) coupling. See Figure 2.
i. When the boards are daisy chained using the capacitor coupling, connect the boards directly together
or with the provided twisted pair cables.
ii. When the boards are daisy chained using the transformer setting, connect the boards using the RJ45
cables.
7. Connect microcontroller board (RTKA489204MICROZ) connector JP3 to the master RTKA489204DE0000BU
board connector JP6.
8. Connect the USB port of the PC to the USB port of the RTKA489204MICROZ daisy chain master board.
9. Turn on the power supply. The two green LEDs (V3P3 and V3P3x) turn on to indicate that the LDO regulators
are operating on the RAA489204s.
a. Run the GUI (see Quick GUI Setup Guide). Use the software to connect the board. Because there is a
Watchdog timer on the RAA489204 that waits close to a minute before powering down, perform the
following steps on the GUI as soon as possible after powering the boards.
b. Start the GUI.
c. Click on Roll Call. The GUI should have a green indicator and show the number of connected boards.
d. Click on Set WDT to MAX. This sets the watchdog timers to a maximum setting so that there is time to
evaluate the system.
10. When the RTKA489204DE0000BU is powered, there should be instances of the following board voltages:
V3P3 = 3.3V ±3%
VCC = ~3.3V ±5% (a little lower than V3P3)
V2P5 = 2.5V ±2%
VREF = 2.5005V ±0.5mV
11. See Quick GUI Setup Guide. Use the software to read the cell voltages.
12. Compare the voltages at the board input with the readings provided by the GUI. Use a meter to measure the
voltages on the J7 connector on the RTKA489204DE0000BU boards, because the MCB_PS4_Z board might
not accurately divide the voltages into equal 3.3V steps. Measure the voltage from cell to cell, not cell to ground
Table 1. Daisy Chain Connection Using Cables[1]
1. NC = No connection
Daisy Chain Board RAA489204 DaisyDwn RAA489204 DaisyUp
Master NC Connect to DaisyDwn of board above
Middle Connect to DaisyUp of board below Connect to DaisyDwn of board above
Top Connect to DaisyUp of board below NC

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to get the best accuracy. The meter reading and the GUI readout voltages should closely match (within ±2.5mV
at 3.3V and room temperature).
Figure 5. RTKA489204DK0000BU RevB in 36-Cell Direct Connect Daisy Chain Configuration (Capacitor)
Note: No Daisy Cables are
required when connecting the
boards together as shown.
Power
Supply
12V to
63V
Top Board Position
Automatically Set
All Jumpers
Set to “CAP”
Position
All Jumpers
Set to “CAP”
Position
Mid Board Position
Automatically Set
All Jumpers
Set to “CAP”
Position
Master Set by Connection to
RTKA489204MICROZ Board

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Figure 6. RTKA489204DK0000BU RevB in 36-Cell Cable Connect Daisy Chain Configuration (Capacitor)
Power
Supply
6V to 60V
Top Board Position
Automatically Set
To PC USB Port
All Jumpers
Set to “CAP”
Position
All Jumpers
Set to “CAP”
Position
Mid Board Position
Automatically Set
All Jumpers
Set to “CAP”
Position
Master Set by Connection to
RTKA489204MICROZ Board

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Figure 7. RTKA489204DK0000BU RevB in 36-Cell Cable Connect Daisy Chain Configuration (Transformer)
Power
Supply
12V to
60V
Top Board Position
Automatically Set
To PC USB Port
All Jumpers Set to
“XFMR” Position
All Jumpers Set to
“XFMR” Position
Mid Board Position
Automatically Set
Down Jumpers Set to
“CAP” Position or
Removed Up Jumpers
Set to XFMR Position
Master Set by Connection to
RTKA489204MICROZ Board

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1.3 Quick GUI Setup Guide
1. Connect the RTKA489204MICROZ board to the PC USB port.
2. Run the GUI program.
3. Click STOP GUI. Next, click the arrow in the upper left of the screen to restart the GUI (see Figure 8). The GUI
firmware window shows the firmware revision, and the green LED on the microcontroller board is illuminated.
4. Power up the RTKA489204DE0000BU boards.
5. Within one minute of powering the boards, the boards must be identified, and the Watchdog timers
must be reset.
By default, the boards enter sleep close to one minute after no communications; although OK, this event
complicates the initial power-up. If the boards do not all have two lit green LEDs, power the boards off and
repeat steps 4 and 5.
6. There are two ways to initialize the devices in the daisy chain stack.
a. Click on Connect. This step performs a Roll Call operation, sets the Watchdog timers on all devices to Max,
and clears all Faults. For the first time powering the system, Connect might generate the pop up message:
RAA489204 Device #1 Comm NACK. This message is OK; simply close the box by clicking OK. Finally,
click OK in the Initialization Complete box.
b. Or perform the following steps in sequence: (1) Click on Roll Call, (2) Click on WDTM to Max, and
(3) Click on Clear all Faults.
7. The box next to the Roll Call button indicates the number of boards connected in the daisy chain, but if this is
not correct, repeat steps 6a or 6b. However, if the number of boards remains incorrect, repeat steps 4, 5, and 6.
See Questions and Answers if the problem continues.
8. Click the Scan Voltages button. (Note: Step 8 and 9 are a quick way to validate that the system is connected
and operating correctly.)
9. Click the Read Volts button. The voltage values read in step 8 are displayed. See Figure 9 for a typical setup
with three boards in the daisy chain.
Figure 8. Restarting the GUI
Program Stopped Program Running
Click here to restart GUI

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2. Using the RAA489204 GUI
2.1 Main GUI Screen
Figure 9 shows the GUI Main screen. The primary control elements and commands are on the left. The tab
structure (along the top) provides information about the operation of the pack, the setup of each device in the
stack, and various other monitor functions. The two message windows at the bottom keep track of and display
messages transferred between the GUI and the RAA489204. Finally, in the lower right of the Main screen is an
area that allows you to test any specific command that is not provided by the GUI.
Note: In the upper right corner of the GUI screen is a box titled CRC Seed. This value for this revision of the
RAA489204 silicon should always be ‘FFFF’. If it is not, there can be problems with communication between the
GUI and the devices.
Note: The RAA489204 is an industrial/commercial version of the Automotive ISL78714. For this reason, the
RAA489204 uses the same GUI as the ISL78714, so images of the GUI within this document may Indicate
ISL78714. The RAA489204 is not intended for Automotive applications.
2.2 Main GUI Screen Operation
2.2.1 Start Up
When the program starts, the GUI opens the USB port and checks the revision of the microcontroller code on the
kit dongle. To do this, the GUI sends a command to the microcontroller to read the firmware version number. This
message is not passed along to the RAA489204.
Figure 9. Main GUI Window

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RTKA489204DK0000BU Evaluation Kit Manual
2.2.2 Idle State
When there is no activity either in response to a user button press or from polling, the GUI is in the Idle state.
While in this state, the GUI monitors the USB port for unprompted responses from the RAA489204 evaluation
board and microcontroller. If the USB buffer is empty, there is no action. If there is data in the USB buffer, the
message is received and the decoded response is shown in a pop-up window.
Pressing any button causes the GUI to perform the operation of the button specified. During this operation, the
Idle scan is suspended.
2.2.3 Message Recording
For every command sent and every response received, a record is placed in the Message Boxes. In one box, the
messages are sent. In the other box, the messages are received. These both contain a Hex representation of the
information. See examples in Tab le 2 and Table 3.
2.2.4 Stop GUI
The STOP GUI button exits the program. This method is preferred for exiting
the program (rather than clicking the stop sign icon in the menu bar), because it
performs some clean-up in the USB connection to the microcontroller dongle.
2.2.5 Roll Call
Important: The roll call operation, or Connect, must be the first operation.
The Roll Call button sends a Roll Call command to the evaluation boards using a Roll Call
command. No other commands work until the stack is identified.
The Roll Call command is made up of five bytes and is similar to most other commands.
For information on the structure of a command, see the RAA489204 datasheet.
The Roll Call command passes through each device in the daisy chain. The devices self identify, and the top
device sends a Roll Call response back to the GUI. After receiving the response, the GUI knows the number of
devices that are in the stack, inputs that value into the # Devices window, and illuminates the green USB Connect
indicator.
Table 2. Messages Sent format
Command Message Sent
Roll Call 80D0002E7D
Write WDT register 8691100B0100FF1EF0
Table 3. Messages Received format
Command Message Recorded
Roll Call A4D001545A
Write WDT register 84D20184FE

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If no devices (or fewer number of devices than expected) are identified following a press of the Roll Call button,
complete the following steps:
1. Confirm that the cables are connected firmly and that the boards are powered.
You should see two green LEDs illuminated on each board. If any board has only one LED illuminated, follow
this procedure:
a. If you either have (1) one evaluation board with one green LED or (2) a Master board with one green LED
while the other boards have none, check to see that the switches on the MCB_PS4_Z boards are set to
ON. Next, follow either step i or ii.
i. Cycle the power on all of the evaluation boards.
ii. Or, click the Wakeup/HReset Precursor button; next, click the Wake button. The master wakes up
(both green LEDs on plus a red LED).
b. Click Roll Call again.
2. If step 1 does not work, click STOP GUI. Next, click the arrow in the upper left of the screen to restart the GUI.
See Figure 11. The GUI indicators change, and the green LED on the microcontroller board is illuminated.
3. If communications still do not work, check that the daisy chain jumpers are set correctly. The jumpers on the
main board (the one connected to the microcontroller) should be set to CAP or removed for the DWN setting.
4. If step 3 does not work, power down the board, remove the USB connection, and reconnect everything (confirm
that all connections are good) and power up again (connect one board for simplicity, if possible.)
5. If the problem persists, use a different board or contact Customer Support.
Figure 10. Roll Call Operation
Figure 11. Restarting the GUI
Roll Call
Send Roll Call Command
Wait for Response
Exit
Read Response
NAK response?
Indicate Error in GUI Pop-up
Decode Address and
Yes
No
“Read Operation
Update “# of Devices
Illuminate Green
“Connect” Indicator
Not Completed”
(from USB buffer)
Program Stopped Program Running
Click here to restart GUI

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2.2.6 WDTM to Max
This button sends a message to every device in the stack to set the Watchdog timeout value to
Maximum. This action is a good thing to do in an evaluation environment, because the default WDT
value is about one minute. If no actions are taken during this time period, devices go to sleep.
The WDTM to Max button sends a series of individual write operations to set the maximum WDT value in the
WDT/BAL TIME register in each device, see Figure 15. If nine devices are identified in the Roll Call command, this
command is sent nine times, once for each IC.
At the end of each write operation, the GUI receives an ACK that it has received this command. If it does not, a
pop-up window indicates the NAK response.
2.2.7 Clear All Faults
This button sends a message to every device in the stack to clear all of the Fault registers; this
event consists of a series of individual Multi-register write operations to each device. Six contiguous
registers present fault information. This button writes ones to all register bits (“0xFFFF”) in every
Fault register to clear the faults.
If nine devices are identified in the Roll Call command, then this multi-register command is sent nine times, once
for each board. At the end of each write operation, the GUI receives an ACK that it has received this command. If
it did not, there is a pop-up window indicating the NAK response.
2.2.8 Connect
This button tells the GUI to perform the Roll Call, WDTM to Max, and the Clear All Faults
commands in sequence. When running this command on a stack of boards directly after
the board are powered, there might be an error message “RAA489204 Device #1 Comm
NACK”. This is OK. Close this box by clicking OK. When this command is complete, an Initialization Complete pop
up box appears. Click OK to close this box. During the operation, the message boxes show the various
commands and responses associated with this operation.
The SPI Block Mode and Select DRDY Mode buttons allow you to set the SPI mode of
operation as either Block transfer or Byte transfer. A Block transfer sets the SPI CS pin
low at the start of an operation and brings it high at the end, regardless of how many
bytes are in the data transfer. The Byte transfer mode brings the SPI CS line high between each byte. The GUI
automatically controls the RAA489204 DRDY Mode pin to correspond to the chosen SPI mode selected.
To use these buttons, click SPI Block Mode to select the required mode, then click Select DRDY Mode to
actually send the command to the microcontroller. No data is sent to the RAA489204 with this command.
2.2.9 Scan Volts
The Scan Volts button forces a Scan Volts command to all devices. The command uses an
Address All device address.
2.2.10 Scan Mixed
The Scan Mixed button forces a Scan Mixed command to all devices. The command uses an
Address All device address.
2.2.11 Scan Temps
The Scan Temps button forces a Scan Temperature command to all devices. This command uses
an Address All device address.
2.2.12 Scan All
The Scan All button forces a Scan All command to all devices. In one operation, the command
executes together the Scan Volts, Scan Wires, and Scan Temps commands, and the command

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uses an Address All device address. The Scan All operation, when using the MCB_PS4_Z boards with the
RTKA489204DE0000BU revB boards, produces an Open Wire error on Cell1. This is a result of a voltage drop
caused by the MCB_PS4_Z resistor divider, the input filter on the RTKA489204DE0000BU board, the open wire
current, and the open wire threshold detection level on VC1. This combination produces a fault. Using a power
supply or batteries to power the board prevents this fault condition during Scan All.
2.2.13 Read All Volts
The Read All Volts button successively reads the voltage values for all devices and puts the values
into the table in the General tab. The GUI decodes the Hex values in the volts (except for the Fault
Status, which remains in HEX).
2.2.14 Read Temps
The Read Temps button successively reads the temperature Values for all devices and inputs the
values into the table in the General tab. The GUI decodes the Hex values into volts (except for both the
Fault Status that remains in HEX and the Internal Temp value that is converted to °C).
2.2.15 Scan Wires
The Scan Wires forces a Scan Wires command to all devices. This command checks
whether there are any open inputs. This command uses an Address All device address.
2.2.16 Scan Continuous
The Scan Continuous button sends a Scan Continuous command to all devices. The
command uses an Address All device address.
2.2.17 Scan Inhibit
The Scan Inhibit button forces a Scan Inhibit command to all devices. The command
uses an Address All device address.
2.2.18 Scan Cell MUX
The Scan Cell MUX button forces a Scan MUX command to all devices. This command
uses an Address All device address.
2.2.19 Polling
Select the desired Scan Mode to be used when performing the polling operation.
Select Scan Voltages, Scan Mixed, or Scan All using arrow keys or clicking on the
options box.
Select the polling interval with the Polling (ms) value. If the polling operation takes
more time than this setting, the polling essentially becomes continuous with a new
operation starting after the previous one completes.
Click the Start button to start polling. While polling, the button illuminates and shows
Stop. The data collected fills a data array that can be loaded to Excel when polling stops. Export the data by
stopping the scan and then pressing Save to Excel File.
Scan All polling forces measurement of the cell voltages, Pack voltage, the temperatures, and checks for open
wires. The Scan All command is sent one time for each polling loop to all stack devices using Address All
addressing. Polling using Scan All generates an Open Wire fault on cell1. (See Scan All).
The Scan Volts option scans the cell voltages, the Pack Voltage and the internal temperature.
Scan Mixed polling is the same as the Scan Volts option, but it scans the ExT1 input midway through the Cell
Voltage scan.

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The polling operation follows the scan command with a read of voltages, faults, and temperatures. The operation
processes using read commands for each device to request the contents of the voltage, temperature, and fault
registers.
When the data is returned, the GUI extracts the information from the buffer to populate the screen and the data
collection array. When populating the display, the cell voltage, pack voltage, and internal temperature registers are
converted from the Hex value in the returned message to either a voltage or temperature for display. The external
temperature inputs are only converted to a voltage. Converting the External Temperature inputs to a temperature
value is decided by the user and is dependent on the external resistor/thermistor divider arrangement. See also
the RAA489204 datasheet, Data Registers section.
With fewer than 14 cells connected (and with the Cell Setup Register set to ignore the missing cells), the missing
cells are depicted with a blank (or a value of 0) in the results table. See Figure 12 for an example of a stack
of 9 boards.
2.2.20 Measure
The Measure button sends a Measure command to tell the devices to
measure the voltage specified in the adjacent selection box. Use the
up/down arrows to select the item to measure, or better, click on the box to bring up a menu selection. The
Measure command uses an Address All device address.
2.2.21 Sleep
Clicking on the Sleep button sends a Sleep command. This command uses an Address All
device address.
2.2.22 SReset
The SReset button sends an SReset command. This command uses an Address All device
address. After sending an SReset command, it is necessary to go through the Roll Call + WDTM
to Max (or Connect) sequence again.
Figure 12. Proposed General Tab Showing a 6-Cell, 10-Cell, 11-Cell, and 14-Cell Configurations
Master
2
3
4
5
6
7
8
Device
Master
2
3
4
5
6
7
8
Device

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2.2.23 Wakeup
The Wakeup button sends a Wakeup command. The command uses an Address All device address.
The Wake/Reset Precursor command should be sent prior to a Wakeup command.
2.2.24 HReset
The HReset button forces an HReset command to all devices. This command uses an Address All
device address. The Wake/Reset Precursor command should be sent prior to this command. After
sending an HReset command, it is necessary to go through the Roll Call + WDTM to Max (or
Connect) sequence again.
2.2.25 Wake/HReset Precursor
Clicking on the Wake/HReset Precursor button sends a Wake/HReset Precursor
command to the Master device. This command goes only to the Master device (not to the
daisy chain) and instructs the Master to wake up (if not already awake). It prepares the
Master to properly send the next command. If the next command is not a Wake or HReset command, the host
receives a NAK response.
2.2.26 Balance Enable
This button issues a Balance Enable command.
This command starts the balance operation. (Balance does not start, unless it is setup using
other registers). This command uses an Address All device address. This command set the BEN bit in the Cell
Balance Setup register.
2.2.27 Balance Inhibit
This button issues a command that stops the balance operation. This command uses an
Address All device address. This command clears the BEN bit in the Cell Balance Setup
register.
2.2.28 ACK
This button sends an ACK command through the daisy chain. The command expects an ACK
response and only uses the address of the selected device.
2.2.29 NAK
This button sends a NAK command through the daisy chain. The command expects an
ACK response and only uses the address of the selected device.
2.2.30 Calc Register Checksum
Clicking on this button sends a command to perform a calculation of the register checksum. The
command expects an ACK response and uses an Address All device address. Typically, this
command is used to update the register checksum following a change to settings in the volatile
memory area that controls fault monitoring, such as changes to the overvoltage, undervoltage, and external
temperature limits.
2.2.31 Check Register Checksum
Clicking on this button sends a command to perform a check of the register checksum. The
command expects an ACK response and uses an Address All device address. If there is an
error, that is, if the checksum returned from this operation does not match the calculated
checksum, a Fault condition is set automatically. Read the Fault Status registers to see the fault condition.