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The Compute Module is a Raspberry Pi in a more flexible form factor, intended for industrial application. CM3L is the Raspberry Pi 3-based revision of the original Compute Module, provided without the 4GB of on-module eMMC flash found on the CM3.
The Compute Module contains the guts of a Raspberry Pi 3 (the BCM2837 processor and 1GB RAM). 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 onto 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 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.
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)
• ARMv7 Instruction Set
• Mature and stable Linux software stack
o Latest Linux Kernel support
o Many drivers upstreamed
o Stable and well support user environment
o Full availability of GPU functions using standard APIs
• 1 x Raspberry Pi Compute Module 3 Lite