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comfilepi:hardware_revisions:index

Hardware Revisions

CPi-A070WR, CPi-A102WR

v2.6

  • Added USB device protection circuit

v2.5

  • Voltage regulator component change

v2.4

  • 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, modifications to improve EMI performance
  • [CPi-A102xx] Beginning in June 2021, modifications to improve EMI performance

v2.3

  • 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.

v2.2

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

v2.1

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.

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

  • Unused USB Port is removed.

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

  • Initial release

CPi-A070WT

v1.3

  • Voltage regulator component change

v1.2

  • Modifications to improve EMI performance

v1.1

  • Changes to support eMMC
  • Improved I2C circuit.

v1.0

  • Initial Release

CPi-A101WR

v1.2

  • Voltage regulator component change

v1.1

  • Improved I2C circuit

v1.0

  • Initial Release

CPi-A150WR

v1.5

  • Voltage regulator component change

v1.4

  • Improved I2C circuit

v1.3

  • Initial release

CPi-C070WR4C

v1.0

comfilepi/hardware_revisions/index.txt · Last modified: 2022/12/09 17:03 by COMFILE Technology