Pascal

Pascal, a cutting-edge carrier board, specifically designed to complement and enhance the capabilities of Raspberry pi compute modules.

General

• The Pascal introduces a powerful, yet efficient and compact edge computing solution based on Raspberry pi compute modules.
• Pascal introduces rich set of interfaces while maintain small footprint and minimal weight.
• The board is especially designed for robots, UAVs and other space and volume constrained implementations.

Compatibility

• The Pascal introduces a powerful, yet efficient and compact edge computing solution based on Raspberry pi compute modules:

  • Raspberry Pi Compute Module 4
  • Raspberry Pi Compute Module 5

Mechanical

• Weight

  • Empty weight (w/o Compute Module): ~14 [g].
  • Raspberry pi weight (w/o heatsink): ~8 [g].
  • Heatsink: ~50 [g].
  • Total Weight: ~72 [g].

• Dimensions

  • Board dimensions are defined in millimeters.
  • Mounting hole size is M3.

  

Electrical

General

• For each connector specification, the pinout orientation is determined by an arrow pointing to pin 1.

Specifications

• Input voltage: 6-36 [V]
• GPIO / Communication logic level: 3.3 [V]
  • Warning: do not operate at any other logic voltage level.

Electrical pinout

• Connector orientation

  • JST-GH cables shall be oriented according to the illustration

FRC Button

• To flash Raspberry pi compute module, use the FRC button according to the following steps:
  • Power off the board
  • hold the FRC button
  • Power up the board
  • release the FRC button
  • The Raspberry pi compute modules is now in recovery mode
  • run the script on the host pc to enable flashing

Power

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM06B-GHS-TBT	JST-GH
  Cable Connector	GHR-06V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	VIN
  2	VIN
  3	VIN
  4	GND
  5	GND
  6	GND

USB OTG

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM04B-GHS-TB	JST-GH
  Cable Connector	GHR-04V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	OTG_5V (input)
  2	USB0_D-
  3	USB0_D+
  4	GND

USB1/2/3/4

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM04B-GHS-TB	JST-GH
  Cable Connector	GHR-04V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	OTG_5V (input)
  2	USB0_D-
  3	USB0_D+
  4	GND

PWM

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM04B-GHS-TB	JST-GH
  Cable Connector	GHR-04V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	5V
  2	PWM0_0
  3	PWM0_1
  4	GND

UART0/1

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM04B-GHS-TB	JST-GH
  Cable Connector	GHR-04V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	5V
  2	UART2_RXD (logic 3.3v)
  3	UART2_TXD (logic 3.3v)
  4	GND

Ethernet

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM08B-GHS-TB	JST-GH
  Cable Connector	GHR-08V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	ETH_MDI0_P
  2	ETH_MDI0_N
  3	ETH_MDI1_P
  4	ETH_MDI1_N
  5	ETH_MDI2_P
  6	ETH_MDI2_N
  7	ETH_MDI3_P
  8	ETH_MDI3_N

CAN

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM04B-GHS-TB	JST-GH
  Cable Connector	GHR-04V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	5V
  2	CAN_H (logic 3.3v)
  3	CAN_L (logic 3.3v)
  4	GND

I2C

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM06B-GHS-TBT	JST-GH
  Cable Connector	GHR-06V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	5V
  2	I2C0_SCL (logic 3.3v)
  3	I2C0_SDA (logic 3.3v)
  4	I2C1_SCL (logic 3.3v)
  5	I2C1_SDA (logic 3.3v)
  6	GND

SPI

• Connector Definition

  Type	Part Number	Part Name
  Board Connector	SM06B-GHS-TBT	JST-GH
  Cable Connector	GHR-06V-S	JST-GH

• Connector Pinout

  Pin	Name
  1	5V
  2	SPI0_SCLK (logic 3.3v)
  3	SPI0_MISO (logic 3.3v)
  4	SPI0_MOSI (logic 3.3v)
  5	SPI0_CS0_N (logic 3.3v)
  6	GND

Software

General

• The software installation for the Pascal board is simple and based on the same steps as the Dev Kit board.

Flashing Raspbian OS

• Step 1: Hold the FRC button and power up the Pascal board.
• Step 2: Hold the FRC button for additional 3 seconds after power up and release.
• Step 3: Connect a USB cable to USB OTG port.
• Step 4: Flash the module using the instructions in the following link: https://www.raspberrypi.com/documentation/computers/compute-module.html#flash-compute-module-emmc
• Step 5: When installation is complete, reboot the board.