Raspberry Pi CM4-to-CM3-Board User Guide
Overview
Raspberry Pi Compute Module 4 CM4 to CM3 Adapter CM3+ Adapter board converted from cm4
Resource comparison
The adapter board calls CM4 resources
| CM4-to-CM3-Board | CM4 |
| HDMI | HDMI0 |
| GPIO0~27 | GPIO0~27 |
| GPIO28、GPIO29 | GPIO44（SDA0）、GPIO45（SCL0） |
| GPIO31、GPIO33 | CAM_GPIO |
| GPIO30、GPIO32、GPIO33~45 | NC |
| CSI0 | CSI1 |
| CSI1 | CSI0 |
| DSI0 | DSI1 |
| DSI1 | DSI0 |
| USB2.0 | USB2.0 |
| SDIO | SDIO |
Onboard resources
CM4 connector: connect CM4
CM4 working status light: used to judge whether CM4 is working
MP28164: DC buck-boost chip
Power supply selection: the resistor on the left - direct power supply; the resistor on the right - power supply after passing through the DC buck-boost chip (default)
IO level selection: select the IO level of CM4 (3.3V is selected by default)
CM3 interface: used to connect to the CM3 backplane
Price：
$15.89
Part Number：
CM4-to-CM3-Board
Brand：
Spotpear
SKU：
0101443