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comfilepi:hardware_revisions:index

Hardware Revisions

NOTICE - Beginning in August 2020, production began transitioning from the Compute Module 3 Lite (CM3L) to the Compute Module 3+ Lite (CM3+L). Use the command cat /proc/device-tree/model to verify the precise hardware. If you are using an older operating system you many need to update the Raspberry Pi Firmware for it to boot.

CPi-A070WR, CPi-A102WR

v1.4 (S/N : A01001-17-5-1 ~ A01001-17-5-17)

  • Initial release

v1.5 (S/N : A01001-17-6-1 ~ A01001-17-7-10)

  • Unused USB Port is removed.

v2.0 (S/N : A01001-17-7-11 ~ A01001-17-11-91, A01003-17-7-1 ~ A01003-17-10-26)

  • Added Enable/Disable function for level shifter IC (TXS0108E). Needs bt-blob.bin file at /boot folder.
  • Populated R33 for backlght On/Off feature (GPIO34).
  • Added RTC cirucuit. However, the RTC IC is not populated.
  • Use OS 20170703 or later.

v2.1 (Refer to the label on the back of the enclosure)

v2.2 (Refer to the label on the back of the enclosure)

  • COM1 has been changed from RS-232 to RS-485
  • Use OS 20170828 or later.

v2.3 (Refer to the label on the back of the enclosure)

  • Improved I2C circuit
  • Improved SD Card support
  • Most recent production has a 4th USB port for programming Compute Modules with an eMMC
  • Beginning in October 2020, production began populating the RS-485 port with 1kΩ bias resistors.

v2.4 (Refer to the label on the back of the enclosure)

  • PCB layout (solder mask) improvements.
  • Some manually applied changes in v2.3 are now permanent and applied during fabrication
  • [CPi-A070xx] Beginning in June 2020, conductive pads were added during assembly to improve EMI performance
  • [CPi-A102xx] Beginning in June 2021, conductive pads were added during assembly to improve EMI performance

CPi-A070WT

v1.0 (Refer to the label on the back of the enclosure)

  • Initial Release

v1.1 (Refer to the label on the back of the enclosure)

  • Changes to support eMMC
  • Improved I2C circuit.

CPi-A101WR

v1.0 (Refer to the label on the back of the enclosure)

  • Initial Release

v1.1 (Refer to the label on the back of the enclosure)

  • Improved I2C circuit

CPi-A150WR

v1.3 (Refer to the label on the back of the enclosure)

  • Initial release

v1.4 (Refer to the label on the back of the enclosure)

  • Improved I2C circuit
comfilepi/hardware_revisions/index.txt · Last modified: 2021/07/30 09:25 by COMFILE Technology