Texas Instruments LM8330EVM User manual

Using the LM8330EVM Evaluation Module
User's Guide
Literature Number: SNVU166
FEBRUARY 2013

Contents
1 Introduction ........................................................................................................................ 4
1.1 List of Hardware Items for Operation ..................................................................................... 4
1.2 List of Software Items for Operation ...................................................................................... 4
1.3 Step-by-step Instructions for Operation and Troubleshooting ........................................................ 5
1.4 Hardware Uninstall Instructions ........................................................................................... 5
1.5 Software Uninstall Instructions ............................................................................................ 5
2 EVM Configuration and Description ....................................................................................... 6
2.1 EVM Options ................................................................................................................. 6
2.2 LED (D1) Indication of USB Attached .................................................................................... 6
2.3 Input/Output Connector Description ...................................................................................... 6
2.4 Test Point Connectors ...................................................................................................... 6
2.5 Schematics ................................................................................................................... 7
2.6 Layout ....................................................................................................................... 10
2.7 Bill of Materials ............................................................................................................. 12
3 GUI Configuration and Description ...................................................................................... 14
3.1 GUI Installation ............................................................................................................ 14
3.2 GUI Functionality .......................................................................................................... 15
3.2.1 Control Access .................................................................................................... 15
3.2.2 Initialization and LED Control ................................................................................... 18
3.2.3 I2C Byte Access .................................................................................................. 18
3.2.4 LM8330 Registers ................................................................................................ 18
3.2.5 Keypad Status .................................................................................................... 18
3.2.6 Keypad Test ....................................................................................................... 19
4 Related Documentation from Texas Instruments ................................................................... 21
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List of Figures
2-1. LM8330EVM Schematic Sheet1 .......................................................................................... 7
2-2. LM8330EVM Schematic Sheet2 .......................................................................................... 8
2-3. LM8330EVM Schematic Sheet3 .......................................................................................... 9
2-4. LM8330EVM Top Layer .................................................................................................. 10
2-5. LM8330EVM Bottom Layer .............................................................................................. 11
3-1. LM8330EVM GUI Installation Files...................................................................................... 14
3-2. LM8330EVM GUI Install.................................................................................................. 15
3-3. LM8330 GUI Initial Screen ............................................................................................... 16
3-4. LM8330 GUI Open Success Screen.................................................................................... 16
3-5. LM8330 GUI Open Error Screen........................................................................................ 17
3-6. LM8330 GUI Close Screen............................................................................................... 17
3-7. LM8330 Initialization Example........................................................................................... 18
3-8. LM8330 GUI Keypad Test................................................................................................ 19
3-9. LM8330 GUI Keypad Test Passed Example .......................................................................... 19
3-10. LM8330 GUI Keypad Test Failed Example ............................................................................ 20
List of Tables
1-1. Device and Package Configurations ..................................................................................... 4
2-1. Test Point Descriptions..................................................................................................... 6
2-2. Bill of Materials............................................................................................................. 12
3
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Chapter 1
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Introduction
The Texas Instruments (TI) LM8330 evaluation module (EVM) helps designers evaluate the operation and
performance of the LM8330 I2C ™ Keyscan Controller. The LM8330 keyscan operates from a 1.8V supply
and supports 7- and 10-bit I2C addressing in both Standard (100 kHz) and Fast (400 kHz) modes. It offers
exceptional ESD performance designed to tolerate IEC6100-4-2 level 4 ±8 kV direct contact. With 20
configurable GPIO pins, it can support 12x8 keypad array. This operation frees the processor from
scanning the keypad for presses and releases, thus saving power and bandwidth of the system.
The LM8330EVM serves as an I2C interface adapter between a host PC, the LM8330, and/or other I2C-
compatible devices externally connected to the EVM. The communication between the EVM and host PC
is via USB (through a standard type-A to type-B USB cable), while the communication between the EVM,
the LM8330, and/or other slave devices is via I2C bus. The EVM converts communication transactions
between the USB and I2C. The LM8330EVM is a USB powered device with no external power supply
required.
1.1 List of Hardware Items for Operation
To operate the LM8330EVM, the following items are required:
• The LM8330EVM
• Standard type-A to type-B mini-USB cable
• PC with Windows XP, Win7 or later operating system installed
The LM8330EVM contains a USB-to-I2C convertor (MSP430F5529), USB ESD Protection, LDOs, Level
Shifters, and the LM8330.
Table 1-1. Device and Package Configurations
Reference Designator Device Package
U1 MSP430F5529IPN LQFP-80
U2 LM8330 YFQ-25
U3 LP5990TM-1.8/NOPB YFQ-4
U4 SN74AVC1T45YZPR YZP-6
U5 TPS73533DRB DRB-8
U6 TPD4E004DRY DRY-6
U7 SN74AVC1T45YZPR YZP-6
U8 PCA9306DQER DQE-8
1.2 List of Software Items for Operation
In addition to the hardware items listed in Table 1-1, this software is required:
• Demo GUI Software (LM8330.exe)
The software can be downloaded from the TI website at www.ti.com.
The EVM is recognized by a PC as a generic human interface device (HID), which is supported by the
built-in USB/HID drivers of the Windows XP or later operating system. Therefore, it is plug-and-play, and
no proprietary USB driver is required.
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www.ti.com Step-by-step Instructions for Operation and Troubleshooting
1.3 Step-by-step Instructions for Operation and Troubleshooting
After downloading and installing the GUI demo software, follow these steps to operate the EVM:
• Plug the USB cable into both the PC and the EVM and wait for the LED to illuminate.
Troubleshooting: if the LED does not illuminate after 30 seconds, follow these steps:
– Verify that the USB cable is securely connected.
– If the connection is secure, try a different USB port.
– If the problem persists, try rebooting the PC.
– If the problem still persists, try a different USB cable.
– If these steps did not solve the problem, contact TI technical support for help.
• Run the LM8330EVM GUI software and follow the instructions for the GUI (refer to Chapter 3).
1.4 Hardware Uninstall Instructions
Unplug the EVM from the USB port to uninstall the hardware from the host PC.
1.5 Software Uninstall Instructions
For Windows operating system, go to Control Panel > Add or Remove Programs to remove the LM8330
GUI software.
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Chapter 2
SNVU166–FEBRUARY 2013
EVM Configuration and Description
2.1 EVM Options
The hardware is based on the TI MSP430 16-bit, ultra-low power, mixed signal micro-controller with
integrated USB. The PCB is a four-layer board with components mounted on both top and bottom layers
(refer to SCHEMATIC).
2.2 LED (D1) Indication of USB Attached
A green LED is mounted adjacent to the USB (J3) connector on the EVM. Every time the USB interface
adapter is attached to a PC via a USB cable, and if the host PC detects it and goes through enumeration
successfully, the embedded firmware illuminates the LED (D1); otherwise, the LED remains off. After
unplugging the USB cable, the LED turns off immediately.
2.3 Input/Output Connector Description
J2 - Input/Output is the keypad IO connector. This connector provides the connection between the keypad
and the LM8330.
J3 - Input is the USB input connector. This connector provides USB data communication, 5V Power In and
ground (GND) connections.
J4 - Input/Output is the I2C input/output connector. This connector provides access to the I2C SCL and
SDA signals for monitoring from an external device.
2.4 Test Point Connectors
Test point connectors TP1 through TP4 allow the users to verify internal power rails on the LM8330EVM.
describes the functions of all of the test points on the EVM.
Table 2-1. Test Point Descriptions
Test Point Signal Functionality
Connect to DMM positive terminal to monitor the LM8330 1.8V power
TP1 1.8V Test Point rail
Connect to DMM negative terminal to monitor the LM8330 1.8V power
TP2 GND Test Point rail
Connect to DMM negative terminal to monitor the LM8330 3.3V power
TP3 GND Test Point rail
Connect to DMM positive terminal to monitor the LM8330 3.3V power
TP4 3.3V Test Point rail
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2.5 Schematics
Figure 2-1. LM8330EVM Schematic Sheet1
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Schematics www.ti.com
Figure 2-2. LM8330EVM Schematic Sheet2
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Figure 2-3. LM8330EVM Schematic Sheet3
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Layout www.ti.com
2.6 Layout
Figure 2-4. LM8330EVM Top Layer
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Figure 2-5. LM8330EVM Bottom Layer
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Bill of Materials www.ti.com
2.7 Bill of Materials
Table 2-2. Bill of Materials
Qty. Designator Value Description Size Part Number Manufacturer
2 C1, C2 30pF CAP, CERM, 30pF, 0603 GRM1885C2A300JA01D MuRata
100V, ±5%,
C0G/NP0, 0603
1 C3 2200pF CAP, CERM, 0603 C0603X222K5RACTU Kemet
2200pF, 50V, ±10%,
X7R, 0603
3 C4, C5, C6 0.1µF CAP, CERM, 0.1µF, 0603 0603YC104JAT2A AVX
16V, ±5%, X7R,
0603
1 C7 0.47µF CAP, CERM, 0603 GRM188R71A474KA61D MuRata
0.47µF, 10V, ±10%,
X7R, 0603
2 C8, C9 0.1µF CAP, CERM, 0.1µF, 0603 06033D104KAT2A AVX
25V, ±10%, X5R,
0603
3 C10, C11, 1µF CAP CER 1µF 16V 0805 C2012X7R1C105K/1.25 TDK
C15 10% X7R 0805
1 C12 2.2µF CAP, CERM, 2.2µF, 0805 0805YD225KAT2A AVX
16V, ±10%, X5R,
0805
1 C14 22µF CAP ALUM 22µF 5x5.2mm EEE-1AA220WR Panasonic - ECG
10V 20% SMD
1 C16 0.01µF CAP, CERM, 0603 C1608X7R1H103K TDK
0.01µF, 50V, ±10%,
X7R, 0603
2 C17, C19 220pF CAP, CERM, 220pF, 0603 06035A221FAT2A AVX
50V, ±1%,
C0G/NP0, 0603
1 C18 0.1µF CAP, CERM, 0.1µF, 0603 0603YC104JAT2A AVX
16V, ±5%, X7R,
0603
1 D1 SSF-LXH305GD-TR LED 3MM RA 0.250 x 0.250 SSF-LXH305GD-TR Lumex
GREEN DIFFUSED inches
SMD
1 D2 1SMB5922BTS Diode, Zener, 7.5V, SMB 1SMB5922BT3G On Semi
50-mA, 3W
1 FB1 BK1608HS600-T Bead, Ferrite, SMT, 1206 BK1608HS600-T Taiyo Yuden
60Ω, 800mA
1 J1 PEC07DAAN Header, Male 2x7 0.100 inch x PEC07DAAN Sullins
pin, 100mil spacing 2X7
1 J2 1464-1 Keypad, Membrane, 2.5 x 4.75 1464-1 CSI Keyboards
49 Key, 8x10 matrix inches
1 J3 1734035-2 Connector, Recpt, 0.354 X 0.400 1734035-2 Tyco
USB-B, Mini, 5-pins, Inches
SMT
1 J4 PEC05DAAN Header, 5-Pin, Dual 0.100 inch x PEC05DAAN Sullins
row 2x5
1 Q1 BSS138 MOSFET, Nch, 50V, SOT23 BSS138 Fairchild
0.22A, 3.5Ω
2 Q2, Q4 BSS223PW MOSFET, Pch, -20 SOT323 SI1307DL-T1-E3 Siliconix
V, -0.39 A, 1.2Ω
1 Q3 2N7002W-7-F MOSFET, Nch, 60V, SOT323 2N7002W-7-F Diodes
115mA [SC70]
1 R1 33k RES, 33kΩ, 5%, 0402 CRCW040233K0JNED Vishay-Dale
0.063W, 0402
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www.ti.com Bill of Materials
Table 2-2. Bill of Materials (continued)
Qty. Designator Value Description Size Part Number Manufacturer
1 R2 200 RES, 200Ω, 1%, 0603 CRCW0603200RFKEA Vishay-Dale
0.1W, 0603
3 R4, R15, R16 10k RES, 10kΩ, 5%, 0603 CRCW060310K0JNEA Vishay-Dale
0.1W, 0603
2 R5, R6 499ΩRES, 499Ω, 5%, 0603 CRCW0603499RFKEA Vishay-Dale
0.1W, 0603
1 R7 100k RES, 100kΩ, 5%, 0402 CRCW0402100KJNED Vishay-Dale
0.063W, 0402
2 R8, R9 33 RES, 33Ω, 5%, 0402 CRCW040233R0JNED Vishay-Dale
0.063W, 0402
3 R10, R11, 1.5k RES, 1.5kΩ, 5%, 0402 CRCW04021K50JNED Vishay-Dale
R12 0.063W, 0402
1 R13 33k RES, 33kΩ, 5%, 0402 CRCW040233K0JNED Vishay-Dale
0.063W, 0402
1 R14 1.2MΩRES, 1.2MΩ, 5%, 0603 CRCW06031M20JNEA Vishay-Dale
0.1W, 0603
1 R17 200k RES, 200kΩ, 1%, 0603 CRCW0603200KFKEA Vishay-Dale
0.1W, 0603
1 S1 EVQPSD02K Switch, SMD Light- 6.1mm x EVQPSD02K Panasonic
Touch, Side 4.0mm
Operation
2 TP1, TP4 Red Test Point, TH, 80mil pad 5000 Keystone
Miniature, Red with 40mil via
2 TP2, TP3 Black Test Point, TH, 80mil pad 5001 Keystone
Miniature, Black with 40mil via
1 U1 MSP430F5529IPN IC, Mixed Signal TQFP-80 MSP430F5529IPN TI
Microcontroller
1 U2 LM8330 IC, 8x20 Keypad YFQ-25 LM8330TME TI
Controller,
25DSBGA
1 U3 LP5990 Micropower 200mA YFQ-4 LP5990TM-1.8/NOPB TI
Low Dropout
Voltage Regulator,
4-pin DSBGA, Pb-
Free
2 U4, U7 SN74AVC1T45 IC BUS TRANSCVR YZP-6 SN74AVC1T45YZPR TI
TRI-ST 6DSBGA
1 U5 TPS73533DRB IC, 500mA, Low SON-8 TPS73533DRB TI
Quiescent Current,
Ultra-Low Noise,
High PSRR LDO,
3.3-V
1 U6 TPD4E004DRY IC, 4-Chan ESD- SON-6 TPD4E004DRY TI
Protection Array
1 U8 PCA9306 IC VOLT LEVEL DQE-8 PCA9306DQER TI
TRANSLATOR 8-
VSSOP
1 Y1 24.0 MHz Crystal, SMT Quart 0.484 x 0.190 ECS-240-20-5PX-TR ECS
Crystal inch
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Chapter 3
SNVU166–FEBRUARY 2013
GUI Configuration and Description
3.1 GUI Installation
1. Extract the zip file to a temporary folder.
Figure 3-1. LM8330EVM GUI Installation Files
2. Open the setup.exe file and click Install to finish the GUI installation.
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Figure 3-2. LM8330EVM GUI Install
3. Launch the GUI from Start > All Programs > Texas Instruments, Inc > LM8330.
3.2 GUI Functionality
The LM8330 GUI is organized into six sections:
• Control Access: establishes the USB connection between PC and EVM
• Initialization and LED Control: provides access to the LED and initialization of the LM8330
• I2C Access: provides single byte read and write access to any I2C Slave Address
• LM8330 Registers: provides multi-byte read and write access to the LM8330
• Keypad Status : indicates the status of the keypad (key pressed or released)
• Keypad Test: provides test capability to verify each key press & release
3.2.1 Control Access
The control access section is used to establish the USB connection between PC and EVM after the USB
cable is connected. Click the Open button to establish the USB connection. The Serial and Firmware
Version fields will be updated if the USB connection is properly established. Clicking the Close button will
disable USB access, reinitialize the LM8330 to default values, and reset all GUI settings to the default
values. Anytime the USB cable is disconnected the Close button will need to be clicked or the program
terminated by clicking on the Windows Close ICON in the upper right hand corner of the GUI Window.
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Figure 3-3. LM8330 GUI Initial Screen
Figure 3-4. LM8330 GUI Open Success Screen
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Figure 3-5. LM8330 GUI Open Error Screen
Figure 3-6. LM8330 GUI Close Screen
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3.2.2 Initialization and LED Control
The initialization and LED control provides LM8330 initialization, LM8330 reset and control of the LED
mounted on the EVM. The initialization checkbox needs to be checked to configure the LM8330 for 8x10
keypad scanning. The LED control is provided to verify USB communication to the EVM.
Figure 3-7. LM8330 Initialization Example
3.2.3 I2C Byte Access
The I2C Byte Access section provides single byte read and write access to any slave address. The data
field is used for both read and write operation. Note: the Slave Addr, Offset and Data fields are
independent from the corresponding fields in the LM8330 registers section.
3.2.4 LM8330 Registers
The LM8330 registers section provides multi-byte read and write access to the LM8330 registers. The
LM8330 registers are organized by function as follows:
1. Keyscan: provides access to the Keyscan specific registers
2. PWM: provides access to the PWM specific registers
3. System: provides access to the System registers
4. GPIO: provides access to the GPIO specific registers
When the specific register is selected via the register dialog box the Register Address, Attributes, and
Register Description fields are updated with the specific register information. The multi-byte write access
will begin at the address indicated in the Register Address field with the number of data bytes entered in
the Write Data grid beginning with Byte 0 (Note: the maximum number of bytes written is limited to 10)
when the Write button is clicked. The multi-byte read access will begin at the address indicated in the
Register Address field for the number of bytes entered in the Read Byte Count box (Note: the maximum
number of bytes read is limited to 10) when the Read button is clicked.
3.2.5 Keypad Status
The Keypad Status section provides direct reporting of the Key Code, Key Value, and Key State. This
information is automatically updated by responding to the LM8330 interrupt (IRQN). If desired the interrupt
response can be disabled by unchecking the Auto Response checkbox. When operating in this mode the
user will need to manually read the EVTCODE register to ensure that no Key Codes are lost by overflow
of the EVTCODE buffer.
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3.2.6 Keypad Test
The Keypad Test Section provides test capability of the LM8330EVM Keypad. The keypad test is
executed as follows:
• Initialize the LM8330 by clicking on the INIT box in the Initialization and LED Control section
• Enable the Keypad test by clicking on the Enable Test box in the Keypad Test section
• Pressing/releasing the Key indicated in the Key to Test box in the Keypad Test section
The keypad test begins with the "1" key and advances through all ten columns and all five rows of the
keypad (refer to Figure 3-8). The Status, Pass Count, and Fail Count fields are updated as the test
progresses (Note: all 49 keys must be pressed/released to complete the keypad test refer to Figure 3-9
and Figure 3-10).
Figure 3-8. LM8330 GUI Keypad Test
Figure 3-9. LM8330 GUI Keypad Test Passed Example
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Figure 3-10. LM8330 GUI Keypad Test Failed Example
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