Raspberry Pi CM4 Compute Module 4 Core Board for Embedded Industrial Applications

The Raspberry Pi Compute Module 4 is a compact computing module that brings the power of Raspberry Pi 4 to deeply embedded applications. It is built around the BCM2711 quad-core Cortex-A72 64-bit processor, paired with a choice of RAM and eMMC flash specifications. The board also offers wireless module options, dual video output and a variety of interfaces. Unlike earlier CM series modules that used a gold finger design, the CM4 uses a B to B connector to enhance stability. It adds onboard Gigabit Ethernet with IEEE 1588 support and a PCIe port for flexible expansion. This makes it relevant for network application development and for systems that need a small, adaptable core board.

Features and Construction

The CM4 combines a quad-core processor with flexible memory, storage and wireless options. Its construction is centred on a B to B connector and a compact board layout suited to embedded use. The available specifications let you match the module to a particular application rather than accepting a fixed configuration.

Processor and Memory Options

The CPU has been upgraded to the BCM2711 with a quad-core Cortex-A72 64-bit processor, providing more robust performance than earlier generations. Memory options cover 1GB, 2GB, 4GB and 8GB, which supports large data compilation. These choices allow the module to be specified for different workloads within the same product family.

eMMC Flash and Wireless Modules

eMMC flash memory offers transfer rates up to 100 MB/s, four times faster than CM3+. Wireless module options use the same WiFi and Bluetooth modules as Pi4B. They provide an onboard PCB antenna and an external antenna, making them more suitable for industrial applications where wireless connectivity is required.

Uses and Placement

The CM4 is intended for deeply embedded applications where a compact core board is needed. It suits network application development, industrial systems and projects that require flexible module expansion. Its connector design and interface set support integration into carrier boards rather than standalone use.

Embedded and Industrial Use

The B to B connector design changes the previous generations of CM series gold finger design and enhances stability. Wireless module options with onboard PCB antenna and external antenna are more suitable for industrial applications. Onboard Gigabit Ethernet with support for Internet Explorer 1588 helps with network application development.

Expansion and Networking

A PCIe port allows related modules to be added flexibly. Onboard Gigabit Ethernet provides a direct network connection for development and deployment. Dual video output and a variety of other interfaces give the module a broad set of connection possibilities for embedded projects.

Benefits and Buying Value

The CM4 offers a way to use Raspberry Pi 4-class processing in a form factor built for embedding. Its range of RAM, eMMC and wireless specifications means the same module family can serve different technical requirements. The B to B connector, Gigabit Ethernet and PCIe port add practical integration options.

Flexible Specification Choices

Choosing from 1GB, 2GB, 4GB or 8GB RAM and different eMMC flash capacities allows the module to be matched to the application. Wireless module options add WiFi and Bluetooth when needed. This flexibility helps avoid over-specifying or under-specifying a build.

Embedded Integration Strengths

The B to B connector design supports stability in embedded installations. Onboard Gigabit Ethernet with IEEE 1588 support and a PCIe expansion port extend networking and module options. The CM4 therefore addresses projects that need a compact core board with multiple interface and specification choices.