Raspberry Pi Compute Module 3 CM3
The compute Module 3 contains the guts of a Raspberry Pi 3 (the BCM2837 processor and 1GB RAM) as well as a 4GB eMMC Flash device (which is the equivalent of the SD card in the Pi). The Pi 3 has a processor speed of 1.2GHz and runs at roughly 10 times the speed of the Pi 1 due to its quad-core CPU. This is all integrated on to a small 67.6mm x 31mm board which fits into a standard DDR2 SODIMM connector (the same type of connector as used for laptop memory). The Flash memory is connected directly to the processor on the board, but the remaining processor interfaces are available to the user via the connector pins. You get the full flexibility of the BCM2837 SoC (which means that many more GPIOs and interfaces are available as compared to the Raspberry Pi), and designing the Module into a custom system should be relatively straightforward as we’ve put all the tricky bits onto the Module itself.
The Compute Module is available for purchase in single units, or in batches of hundreds or thousands. To get started designing a PCB to use the Module, we provide an open-source breakout board with a single Module in an affordable development kit.
A lite version of the Compute Module 3 is also available. The CM3L brings the SD card interface to the Module pins so a user can wire this up to an eMMC or SD card of their choice.
The Raspberry Pi Compute Module 3 Development Kit contains the following components:
Raspberry Pi Compute Module IO Board
This is the main development kit IO board into which the Compute Module SODIMM board is connected. It also contains all of the necessary interface ports to allow an engineer to design and test their own prototype application.
The IO board contains the following interfaces:
- Multiple GPIO interfaces on 2 60 way 0.1” Headers
- 1 x Micro USB connector type B – USB Slave
- 1 x USB connector type A – USB Host
- 2 x CSI ports for camera boards
- 2 x DSI ports for display boards
- Full size HDMI port
- Micro USB power connector
- Micro SD connector
The schematics and board design files for the Compute Module IO board have been published by the Raspberry Pi Foundation and detail the interconnection between the SODIMM socket and the interfaces on the IO board. These can be found at:
https://www.raspberrypi.org/documentation/hardware/computemodule/
The Raspberry Pi Compute Modules
The modules simplify the design process engineers need to undertake when developing a System on Module (SoM) solution into their final product. Engineers do not need to concern themselves with the complexities of interfacing with the BCM2837 processer directly and instead can concentrate on designing the interfaces to their own IO board and their application software . This simplicity fosters rapid development.
Raspberry Pi Compute Module 3
The Compute Module 3 contains the following components contained within a 200 pin SODIMM design:
- Broadcom BCM2837 processor
- 1Gbyte LPDDR2 RAM
- 4Gbytes eMMC Flash
- 35u hard gold plated IO Pins
Raspberry Pi Compute Module 3 Lite
The Compute Module 3 Lite product is the same as the Compute Module 3 except the eMMC Flash is not fitted, and the SD/eMMC interface pins are available for the user to connect their own SD/eMMC device The Compute Module 3 Lite contains the following components contained within a 200 pin SODIMM design:
- Broadcom BCM2837 processor
- 1Gbyte LPDDR2 RAM
- 35u hard gold plated IO Pins
(N.B. when operating with the IO Board, an SD card with a suitable image must be connected to the IO board for the system to work)
Software:
- ARMv7 Instruction Set
- Mature and stable Linux software stack
- Latest Linux Kernel support
- Many drivers upstreamed
- Stable and well support user environment
- Full availability of GPU functions using standard APIs
Raspberry Pi Compute Module IO Board Camera Display Adaptor
These adapters are used to connect a standard Raspberry Pi camera board or Raspberry Pi display to the Compute Module IO Board. There is one display and one camera adapter provided within the kit.
Power Supply 5v 2.5A
This is used to power the Compute Module IO Board
USB A to micro B Cable
This is provided to allow you to flash an operating system onto the 4GB eMMC flash memory within the Compute Module. (It is recommended that you use a Raspberry Pi 3 Model B to re-flash the software on the chip)
4 x Jumper Wires
These are provided to jumper the control of the Camera interface or Display interface into the GPIO banks so they can be accessed.
| Part Number | RPI-COMPUTE3 |
|---|---|
| Weight (KG) | 0.030000 |
| Manufacturer | Raspberry Pi |
| Voltage (V) | NA |
| Processor | BCM2837 ARM Cortex-A53 Quad Core |
| Frequency | 1.2GHz |
| Hardrive | 4GB FLash |
| Wifi | Yes |
| Bluetooth | Yes |
| Output Port | NA |
| Num of Core | 4 |
| Num of Ports | NA |
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