NXP Semiconductors S12ZVM12EVB User manual

1 Introduction
The S12ZVMx12EVB board is designed to drive 3-phase
BLDC or PMSM motors, enabling implementation of motor
control techniques:
• Sensor-less:
• Back-EMF signal sensing using the MCU
integrated ADC modules
• Back-EMF zero-cross signal monitoring using
MCU integrated comparators
• Sensor-based:
• Hall sensor signal monitoring
• Resolver sin/cos signal monitoring
The board features the S12ZVM, a 16-bit automotive
microcontroller from the MagniV family. This System on
Chip integrates an S12Z microcontroller with a Local
Interconnect Network (LIN) physical interface, a 5-V
regulator and a Gate Driver Unit (GDU). The motor power
stage comprises 6 N-channel power MOSFETs that are
controlled by the MCU integrated GDU.
A USB to SCI interface is available and can be used for
FreeMaster PC-based application control. An integrated
OSBDM debugger interface is also provided for easy
programming/debugging of the S12ZVM microcontroller
device.
The board is available in the following versions:
• S12ZVML12EVBLIN – Features the
MC9S12ZVML12, with integrated LINPHY
Freescale Semiconductor Document Number: MC9S12ZVM128MCBUG
User's Guide Rev. 2, 03/2016
S12ZVM12EVB Evaluation Board
User Guide
© 2016 Freescale Semiconductor, Inc.
Contents
1 Introduction................................................................1
2 Interface Description.................... .............................4
3 Design Considerations.................... ........................ 11
4 Motor Control Kit Board Set-Up........... ................. 29
5 Electrical Characteristics................ .........................30
6 References...............................................................30
7 S12ZVMxEVB Board Schematics..... .................... 31

• S12ZVMC12EVBCAN – Features the MC9S12ZVMC12, with a Voltage Regulator controller to supply an external
CAN transceiver
• MTRCKTSBNZVM128 – Motor Control Kit integrating the S12ZVML12EVBLIN Evaluation Board with a 3-phase
BLDC Motor with Hall sensor, running a sensorless control application using Back-EMF zero-crossing detection
1.1 EVB Features
• MC9S12ZVML12MKH or MC9S12ZVMC12MKH microcontroller, 64LQFP package
• BDM interface for MCU code download and debugging, via 6-pin header
• On-board OSBDM for MCU code download and debugging, via USB connector
• 6 N-channel Power MOSFETs in 3-phase half H-bridge array
• Motor Control Interface:
• Hall Sensor
• Resolver interface
• SINCOS interface
• Connectivity:
• LIN
• CAN
• USB-to-SCI serial port
• Phase and DC-bus current sensing circuits
• LED indicators:
• Supply voltage indicator
• Reset indicator
• VDDX (MCU 5 V supply) indicator
• FAULT indicator
• Over-voltage and over-current FAULT indicator with potentiometer adjustments
• 2 general-purpose, user configurable LEDs
• 2 general-purpose, user configurable push buttons
• 1 general-purpose, user configurable switch
• Optional 4 MHz external oscillator
• 1 general-purpose Potentiometer
1.2 Board Architecture
The S12VMx12EVB Controller Board basic building blocks are depicted in the following figure.
Introduction
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Figure 1. S12ZVMx12EVB block diagram
The board is supplied by VBAT voltage in the range from 3.5 V to 26 V. The board includes a reverse battery protection FET
to the output Field Effect Transistor (FET) power bridge, as well as a reverse battery protection diode to the logic supply. A
boost converter can be enabled by using the integrated boost controller and external inductor and diode components, for low
voltage operation (VBAT < 7 V).
The S12ZVM microcontroller integrates the necessary regulation stages, so that VBAT is supplied directly to the
microcontroller device. The VDDX regulator integrated into the S12ZVM provides 5 V to the I/O stages of the
microcontroller.
The S12ZVM can supply 5 V to an external Hall sensor via the EVDD pin. Another integrated voltage regulator provides the
necessary voltages to drive the power MOSFETs.
The MCU also integrates a Gate Driver Unit to drive the power MOSFETs directly from the MCU pins, using external
bootstrap capacitors on the high side FETs. The GDU module includes a Charge Pump to enable 100% duty cycle driving on
the high side FETs. The GDU outputs are internally controlled by the Pulse Width Modulator with Fault Protection module
(PMF) inside the MCU. The PMF module can drive the different channels independently or in complementary pairs, with
automatic dead time insertion.Several FAULT monitoring comparators are connected to the PMF’s external FAULT pin. The
settings for FAULT triggering can be configured using on-board potentiometers.
Introduction
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Figure 2. MC9S12ZVM128MCB controller board
2Interface Description
2.1 Power Supply, J54 or J58
The S12VMx12EVB board can be supplied either by using the 2.1 mm DC power plug J54, or the alternate connector J58.
The board can accept input voltage in the range from 3.5 V to 26 V. The board is protected against a reverse battery
condition.
2.2 Alternative Power Supply, J64 and J65
The S12VMx12EVB board can also be supplied either by populating a blade terminal on both J64 (positive) and J65 (ground
reference) for applications requiring higher current capabilities.
Interface Description
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2.3 3-Phase Motor Connector, J24
Power outputs to the motor are located on connector J24. Phase outputs are labeled 0, 1, and 2. A permanent magnet
synchronous (PMSM) or a brushless DC (BLDC) motor phase windings can be connected into these connectors.
Table 1. 3-phase motor connector
Connector Signal name Description
J24 pin 1 Phase 0 Supplies power to motor phase A
J24 pin 2 Phase 2 Supplies power to motor phase C
J24 pin 3 Phase 1 Supplies power to motor phase B
2.4 Hall Sensor Interface, J11
In Hall sensor based BLDC applications, the Hall sensor inputs are used to determine the actual motor rotor sector. The MCU
is capable of providing a regulated 5 V supply to an external Hall sensor by the EVDD pin.
The signals from this connector can be routed to the timer related inputs on the MCU. The following table shows the pinout
description of the Hall Sensor connector interface.
Table 2. Hall Sensor connector interface
Interface pin Signal name MCU signal Description Direction
1 EVDD EVDD (PP0 through
J14)
5 V supply to Hall
sensor
Power Output
2 GND — Ground reference Power Reference
3 HALL_A/PH_A IOC1 (PT1 through J15) Hall sensor A Digital Input
4 HALL_B/PH_B IOC2 (PT2 through J16) Hall sensor B Digital Input
5 HALL_C/Index IOC3 (PT3) Hall sensor C Digital Input
6 — — (Not connected) —
2.5 Resolver Interface, J62
In applications using a resolver sensor, the position of the rotor is encoded into sine and cosine signals indicating the shaft
angle. A reference signal is generated out of an MCU timer pin. The sine and cosine signals can be routed to two different
ADC channels, depending on the appropriate jumper configuration.
The resolver driver circuit shapes a rectangular reference signal from the timer port PT0 output to a sinusoidal waveform. It
consists of an integrator that transforms the rectangular signal into a triangle. The higher harmonic components are filtered
out by the following stage. The output of the filter stage drives the resolver reference winding (RES_GENP/RES_GENM).
The resolver sine and cosine signals are input into a conditioning circuitry that adjusts voltage levels down to the range
acceptable to the on-chip ADC module.
Interface Description
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The following table shows the pinout description of the resolver connector interface.
Table 3. Resolver connector interface
Interface pin Signal name MCU signal Description Direction
1 RES_GENP (Linked to PT0) Resolver Generator
Positive Output
Analog Output
2 RES_GENM (Linked to PT0) Resolver Generator
Negative Output
Analog Output
3 RES_SIN AN0_0 (through J35) or
AN0_3 (through J46) or
AN1_2 (through J51)
Resolver Sensor SIN
Input
Analog Input
4 RES_SIN_REF — Resolver Sensor SIN
Reference
—
5 RES_COS AN1_1 (through J50) or
AN1_3 (through J52)
Resolver Sensor COS
Input
Analog Input
6 RES_COS_REF — Resolver Sensor COS
Reference
—
7 AGND — Analog ground
reference
Power Reference
8 +5VA — 5 V supply voltage Power Supply
2.6 SINCOS Interface, J61
An alternative simplified resolver interface is also available on the SINCOS connector.
The following table shows the pinout description of the SINCOS interface.
Table 4. Pinouts of SINCOS interface
Interface pin Signal name MCU signal Description Direction
1 PH_A IOC1 (PT1 through J15) Resolver Sensor Phase
A Output
Digital Input
2 RES_SIN AN0_0 (through J35) or
AN0_3 (through J46) or
AN1_2 (through J51)
Resolver Sensor SIN
Input
Analog Input
3 PH_B IOC2 (PT2 through J16) Resolver Sensor Phase
B Output
Digital Input
4 RES_COS AN1_1 (through J50) or
AN1_3 (through J52)
Resolver Sensor COS
Input
Analog Input
5 AGND — Analog ground
reference
Power Reference
6 +5 VA — 5 V supply voltage Power Supply
Interface Description
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2.7 CAN Connector, J8
An external CAN transceiver is available on board and can be routed to the MCU MSCAN module.
Table 5. CAN connector
Interface pin Signal name MCU signal Description Direction
1 MSCAN_H RXCAN/TXCAN CAN Bus H Diff. bidirectional
2 MSCAN_L RXCAN/TXCAN CAN Bus L Diff. bidirectional
3 — — (Not connected) —
4 — — (Not connected) —
2.8 LIN Connector, J13
The integrated LIN physical layer is used as the LIN interface.
Table 6. LIN connector
Interface pin Signal name MCU signal Description Direction
1 LGND — Ground reference Power Reference
2 LGND — Ground reference Power Reference
3 HD (VBAT) — Power Supply —
4 LIN LIN LIN Bus Digital bidirectional
2.9 LINPHY Header, J17
The LINPHY interface header provides connections to the TXD and RXD functionality of the LIN physical layer integrated
into the MCU.
Table 7. LINPHY interface header
Interface pin Signal name MCU signal Description Direction
1 LPRXD LPRXD LIN Physical Layer
RXD
Digital Output
2 LPTXD LPTXD LIN Physical Layer TXD Digital Input
Interface Description
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2.10 External BDM Connector, J34
A BDM interface for MCU code download and debugging is provided.
Table 8. External BDM connector
Interface pin Signal name MCU signal Description Direction
1 BKGD BKGD Background Digital Input
2 GND — Ground reference Power Reference
3 PDO PS5/PDO Extended DBG module
data output
Digital Output
4 RESET_B RESET Reset Digital Bidirectional
5 PDOCLK PS4/PDOCLK Extended DBG module
data clock
Digital Output
6 VDDX_BDM VDDX 5 V supply to external
BDM interface
Power Supply
2.11 Extended DBG Module Header, J38
The PDO and PDOCLK signals to the DBG extended debug module are available for interfacing with dedicated debug
hardware.
Table 9. Extended DBG module header
Interface pin Signal name MCU signal Description Direction
1 PDO PS5/PDO Extended DBG module
data output
Digital Output
2 PDOCLK PS4/PDOCLK Extended DBG module
data clock
Digital Output
2.12 BDM Connector for OSBDM Microcontroller, J1
A BDM interface is provided to load code to the OSBDM microcontroller, U1.
Table 10. BDM connector for OSBDM microcontroller
Interface pin Signal name OSBDM MCU signal Description Direction
1 U_BKGD BKGD Background Digital Input
2 GND — Ground reference Power Reference
3 — — (Not connected) —
4 U_RESET RESET Reset Digital Bidirectional
5 — — (Not connected) —
6 +5 VU VDD1 5 V supply from
OSBDM USB interface
Power Supply
Interface Description
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2.13 USB Connector for OSBDM Microcontroller, J7
This USB interface is used to communicate with a PC as an interface to load and debug code to the microcontroller. The
OSBDM tool also may enable a virtual serial port that can be routed to SCI1 serial port in the MCU, at pins PS2 and PS3, by
setting the appropriate registers.
Table 11. USB Connector for OSBDM microcontroller
Interface pin Signal name MCU signal Description Direction
1 +5VU — USB Power Supply Power Supply
2 D- PS2/PS3 or RESET/
BKGD
Data - Digital Bidirectional
3 D+ PS2/PS3 or RESET/
BKGD
Data + Digital Bidirectional
4 GND — Ground reference Power Reference
2.14 USB Connector for USB-to-SCI Interface, J25
This USB interface is used to communicate with a PC as an interface to a virtual serial port.
Table 12. USB Connector for USB-to-SCI interface
Interface pin Signal name MCU signal Description Direction
1 VBUS_USB — USB Power Supply Power Supply
2 D- PS2/PS3 Data - Digital Bidirectional
3 D+ PS2/PS3 Data + Digital Bidirectional
4 GND_USB — Ground reference Power Reference
2.15 MCU Port P Header, J21
The MCU signals from GPIO port P can be monitored using this header.
Table 13. MCU Port P header
Interface pin MCU signal Pin functionality
1 PP0 PP0/EVDD1/KWP0/(PWM0)/ECLK/
FAULT5/XIRQ
2 PP1 PP1/KWP1/(PWM1)/IRQ
3 PP2 PP2/KWP2/(PWM2)
4 GND Ground reference
Interface Description
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2.16 MCU Port E Header, J22
The MCU signals from GPIO port E can be monitored using this header.
Table 14. MCU Port E header
Interface pin MCU signal Pin functionality
1 PE0 PE0/EXTAL
2 PE1 PE1/XTAL
3 GND Ground reference
2.17 MCU Port T Header, J23
The MCU signals from GPIO port T can be monitored using this header.
Table 15. MCU Port T header
Interface pin MCU signal Pin functionality
1 PT3 PT3/IOC3/(SS)
2 PT2 PT2/IOC2/(PWM5)/(SCK)
3 PT1 PT1/IOC1/(PWM4)/(MOSI)/(TXD0)/
LPDR1/PTURE
4 PT0 PT0/IOC0/(PWM3)/(MISO)/(RXD0)
5 GND Ground reference
2.18 MCU Port S Header, J31
The MCU signals from GPIO port S can be monitored using this header.
Table 16. MCU Port S header
Interface pin MCU signal Pin functionality
1 PS0 PS0/KWS0/RXD1/RXCAN/(LPRXD)/
PTUT0
2 PS1 PS1/KWS1/TXD1/TXCAN/(LPTXD)/
PTUT1
3 PS2 PS2/KWS2/(RXD1)/MISO
4 PS3 PS3/KWS3/DBGEEV/(TXD1)/MOSI
5 PS4 PS4/KWS4/SCK/PDOCLK
6 PS5 PS5/KWS5/SS/PDO
7 GND Ground reference
Interface Description
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