MCU Pin Out

VCU Pin Diagram

                                                                  CN7
                                                                |01|02|
                                                                |03|04|
                                                        CAN2_TX |05|06| VREFP
                  CN8                                   CAN2_RX |07|08| GND
             NC |01|02|                                         |09|10|
          IOREF |03|04|                                         |11|12|
          RESET |05|06|                                         |13|14|
           +3V3 |07|08|                                         |15|16|
            +5V |09|10|                               DAC1_OUT1 |17|18|
            GND |11|12|                                         |19|20|
            GND |13|14|
            VIN |15|16|                                    VDDA |01|02|
                                                           AGND |03|04|
     ADC1_INP15 |01|02|                                     GND |05|06|
     ADC3_INP10 |03|04|                                         |07|08|
                |05|06|                                         |09|10|
      ADC2_INP5 |07|08|                                 CAN3_RX |11|12|
                |09|10|                                         |13|14|
         RTD_IN |11|12| GND                                     |15|16|
                |13|14|                                     GND |17|18|
        RTD_OUT |15|16|                                         |19|20|
         BUZZER |17|18|                                         |21|22| GND
       FAULT_IN |19|20|                                         |23|24|
                |21|22|                                         |25|26|
            GND |23|24|                                     GND |27|28|
        CAN1_RX |25|26| CAN3_TX                                 |29|30|
        CAN1_TX |27|28|                                         |31|32| 
                |29|30|                                         |33|34|
                  CN9                                            CN10

Description of Pin Functions

Signal Name	Schematic Name	Direction	Active	Function
RTD_IN	RTD_IN	Input	High	On rising edge VCU enters ready-to-drive state
RTD_OUT	!RTD_STATUS	Output	Low	Driven low in ready-to-drive state, high otherwise
FAULT_IN	SHUTDOWN_SENSE	Input	Low	On falling edge, VCU enters fault/shutdown state.
BUZZER	SPEAKER_ENABLE	Output	High	Driven high for ? seconds before entering ready-to-drive state
ADC1_INP15	APPS_A	Input		First analogue throttle input
ADC2_INP5	APPS_B	Input		Second analogue throttle input
ADC3_INP10	BPS	Input		Brake pressure sensor analogue input
DAC1_OUT1	?	Output		DRS PWM IC control
CAN1_RX		Input		CAN receive (inverter)
CAN1_TX		Output		CAN transmit (inverter)

Built-In LEDs

Signal Name	On	Off	Flashing
RED_LED	Waiting for ready-to-drive	Normal operation	Critical fault
YELLOW_LED
GREEN_LED

Special cases:

• Red and yellow LEDs together indicates HAL Error_Handler() was called (probably a HAL initialisation error).