Raspberry Pi CM0 – Compact Castellated Compute Module with RP3A0 SiP

Raspberry Pi CM0 module

Raspberry Pi CM0 packs a Zero 2 W into a castellated module with a quad-core CPU, 512MB RAM, up to 16GB eMMC, WiFi/BT, HDMI, MIPI, and GPIOs for embedded designs.

The Raspberry Pi Compute Module 0 (CM0) is an unannounced castellated module based on the Raspberry Pi RP3A0 SiP, the same package found in the Raspberry Pi Zero 2 W and Raspberry Pi Compute Module 3E. Designed for business and embedded applications.

The CM0 features a Broadcom BCM2710A1 quad-core Cortex-A53 processor running 1.0 GHz with VideoCore IV GPU, 512MB LPDDR2 RAM, and up to 16GB eMMC flash. Connectivity options include optional Wi-Fi 4 and Bluetooth 4.2 LE with u.FL antenna connector, HDMI, MIPI DSI and CSI interfaces, DPI, TV DAC, PCM audio, one USB 2.0 port, and up to 28 GPIOs with UART, SPI, and I²C. Measuring 39 x 33 mm with 132 castellated holes, it supports Raspberry Pi OS and is designed for long-term use in commercial and industrial products.

Raspberry Pi CM0 Specifications:

• SiP: Raspberry Pi RP3A0
  • SoC: Broadcom BCM2710A1 quad-core Arm Cortex-A53 processor @ 1.0 GHz
    • GPU: VideoCore IV GPU with OpenGL ES 1.1/2.0
    • VPU: H.264/MPEG-4 1080p30 decoding, H.264 1080p30 encoding
• System Memory: 512MB LPDDR2 RAM
• Storage:
  • CM0 Lite: SDIO storage only
  • CM0: 8GB or 16GB eMMC flash
• Wireless: 802.11 b/g/n WiFi 4, Bluetooth 4.2 LE, u.FL antenna connector (optional)
• Display:
  • HDMI, TV DAC, 4-lane MIPI DSI
  • Parallel display interface (DPI)
• Camera: 4-lane MIPI CSI camera interface
• Audio: PCM audio
• USB: 1x USB 2.0
• Expansion:
  • Up to 28x GPIOs
  • UART, SPI, 2x I²C
• Supply Voltage: 5V DC
• Dimensions: 39 x 33 mm
• Temperature: -20°C to +85°C

Raspberry Pi CM0 Block Diagram

Raspberry Pi CM0 top and bottom

The company also provides a Compute Module 0 IO board, which comes with pre-soldered headers, HDMI output, MIPI DSI/CSI connectors, a microSD slot, a micro USB port for flashing, 40-pin GPIO, wireless/Bluetooth disable jumpers, an nRPIBOOT jumper, TV out, and LED pads.

Raspberry Pi Compute Module 0 IO board

In terms of software support, the device should have support for Raspberry Pi OS, as it’s essentially a Raspberry Pi Zero 2W with additional GPIOs and interfaces.

Pricing is reported at $18 in bulk. Since the CM0 is not listed on the Raspberry Pi website, details were gathered from OpenEmbed on X. product brief, and the IO board KiCAD files available under the “文档” tab on the EDATEC website.

Images used courtesy of  EDATEC