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The Raspberry PI Compute Module 4 is very powerful, and it brings the capabilities of the Raspberry PI 4 together in a compact, compact board suitable for deeply embedded applications. It integrates a quad-core ARM Cortex-A72 processor, dual video output, and a variety of other interfaces, and offers a rich selection of RAM, eMMC flash memory specifications, and wireless module specifications.
|Parameters||Description||Processor||Broadcom BCM2711 quad-core Cortex-A72 (ARM v8)|
|Memory||1GB, 2GB, 4GB, or 8GB LPDDR4-3200 SDRAM memory|
|Connectivity||Dual-band (2.4GHz/ 5.0ghz) IEEE 802.11b/g/n/ac Wireless WiFi, Bluetooth Low Energy 5.0, BLE, onboard antenna or access to external antennas|
Support IEEE 1588 Gigabit Ethernet
USB 2.0 port x 1
PCIe Gen 2 x 1 port
28 GPIO pins
SD card interface (only for versions without eMMC)
Video HDMI interface (support 4Kp60) × 2
2-lane MIPI DSI display interface
4-lane MIPI DSI display port
4-lane MIPI CSI camera port
|Multimedia||H.265 (4Kp60 decoding); H.264 (1080p60 decoding, 1080p30 encoding); OpenGL ES 3.0|
|Operating voltage||5V DC|
|Operating temperature||-20°C to 85°C Ambient temperature|
|Dimension||55 × 40 × 4.7mm|
Although the CM4 layout appears simple, it requires no specific I/O consideration.
The CM4 is likely to be used by serious users who will incorporate it as a part of a custom system and enclosure. These users will most likely want to source their own heatsinks to match their specific needs. Hence, it may not be worthwhile for RPT to design a heatsink themselves, especially for prototypes and amateur/hobbyist users, as the market may not be large enough. While a third-party may produce one, it is still uncertain if the demand is sufficient for such a product.
Looks like its meant to be set via devicetree. A custom overlay needs to be made for this or the i2c-rtc overlay needs to be altered.
It’s unfortunate that when burning the SD card, one has to choose between the two versions of Pi Zero W. As I use both types of Pi hardware, it would be more convenient to have one SD card image that I can share. Currently, I need to have two separate images and label them accordingly.
The default packing list without selecting any accessories is as follows:
|Raspberry Pi Compute Module 4||x1|