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Raspberry Pi CM4 Product Overview
The Raspberry Pi Compute Module 4 (CM4) is the 4th generation Compute Module (System-on-Module, SoM) from Raspberry Pi, packaging the core functionality of the Raspberry Pi 4B into a compact board measuring just 55×40×4.7mm. Powered by the Broadcom BCM2711 quad-core Cortex-A72 (ARM v8) 64-bit processor running at 1.5GHz, Raspberry Pi CM4 offers 1GB, 2GB, 4GB, or 8GB LPDDR4-3200 SDRAM memory options. Storage options include 0GB (Lite), 8GB, 16GB, or 32GB eMMC flash. Raspberry Pi CM4 supports dual-band 2.4GHz/5GHz Wi-Fi 802.11b/g/n/ac and Bluetooth 5.0 BLE wireless connectivity (optional), features onboard Gigabit Ethernet PHY (with IEEE 1588 support), and provides a PCIe Gen 2 x1 interface for expansion. With its 55×40mm compact form factor, Raspberry Pi CM4 delivers complete high-performance computing capability and is widely used in industrial automation, digital signage, IoT gateways, edge computing, thin clients, and other embedded applications.
Raspberry Pi CM4 Key Features
Powerful 64-bit Quad-Core Processor: Raspberry Pi CM4 is powered by the Broadcom BCM2711 quad-core Cortex-A72 64-bit processor running at 1.5GHz, delivering significant performance improvements over the previous generation CM3+. It supports H.265 (4Kp60) decode, H.264 (1080p60 decode / 1080p30 encode), and OpenGL ES 3.0 graphics acceleration.
Flexible Memory and Storage Options: Memory options include 1GB, 2GB, 4GB, or 8GB LPDDR4-3200 SDRAM. Storage options include 0GB (Lite), 8GB, 16GB, or 32GB eMMC flash. The Lite version supports storage expansion via an SD card interface. The eMMC flash uses an 8-bit bus interface, achieving sequential read speeds of approximately 83-90 MB/s, with significantly better random I/O performance compared to microSD cards.
Rich Connectivity and Interfaces: Supports dual-band (2.4GHz/5.0GHz) Wi-Fi 802.11b/g/n/ac and Bluetooth 5.0 BLE (optional), with both onboard PCB antenna and external antenna options. Onboard Gigabit Ethernet PHY supports IEEE 1588 precision time synchronization. Raspberry Pi CM4 provides PCIe Gen 2 x1 interface, 1×USB 2.0 interface, and 28 GPIO pins.
Powerful Video and Display Capabilities: Supports dual HDMI interfaces (up to 4Kp60), 2-lane MIPI DSI display interface, 2-lane MIPI CSI camera interface, 4-lane MIPI DSI display interface, and 4-lane MIPI CSI camera interface.
Industrial-Grade Design and Extended Temperature Support: Standard variants operate at -20℃ to +85℃, with some variants supporting an extended temperature range of -40℃ to +85℃. The B2B connector design enhances module-to-baseboard connection stability and reliability. Production lifetime is guaranteed until at least January 2034.
Raspberry Pi CM4 Applications
With its compact SoM form factor, powerful quad-core performance, and flexible configuration options, the Raspberry Pi Compute Module 4 is widely used in:
Industrial Automation & Control: PLCs, industrial robotics, machine vision, process control, data acquisition systems
Digital Signage & Information Displays: Retail advertising screens, airport/station information displays, meeting room schedule boards
IoT Gateways & Edge Computing: IoT gateways, edge AI inference devices, industrial IoT nodes
Thin Clients & Desktop Virtualization: VDI terminals, remote work devices, educational terminals
Medical Devices: Medical imaging, patient monitors, diagnostic equipment
Smart Retail & Self-Service Terminals: Self-checkout systems, information kiosks, smart shelving
Transportation & Security: Intelligent transportation systems, security surveillance, license plate recognition
Robotics & Drones: Autonomous Mobile Robots (AMRs), drone flight controllers, service robots
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FAQs:
Question: What is the Raspberry Pi CM4?
Answer: Raspberry Pi CM4 is a compute module based on the Pi 4B architecture, using B-to-B connectors for enhanced stability, designed for industrial and customized applications .
Question: How to decode the model number?
Answer: In CM4104032, "1" indicates wireless capability, "04" indicates 4GB RAM, and "032" indicates 32GB of eMMC storage . Raspberry Pi CM4 uses this naming scheme.
Question: What is the processor performance?
Answer: Raspberry Pi CM4 features a quad-core 64-bit Cortex-A72 SoC running at 1.5GHz, delivering significantly higher performance than the previous CM3+ generation .
Question: What RAM sizes are available?
Answer: Raspberry Pi CM4 RAM options include 1GB, 2GB, 4GB, and 8GB of LPDDR4, allowing selection based on the software requirements .
Question: What is the onboard storage?
Answer: The Enhanced version of Raspberry Pi CM4 includes onboard eMMC Flash (8/16/32GB) with speeds up to 100MB/s, while the Lite version relies on external SD cards .
Question: What display outputs are supported?
Answer: Raspberry Pi CM4 supports dual 4K outputs, including 2x HDMI and 2x MIPI DSI interfaces, suitable for high-resolution terminal displays .
Question: What are the power supply requirements?
Answer: Raspberry Pi CM4 runs on 5V DC power. While typical power consumption is around 1.5W, thermal management is advised for intensive tasks .
Question: What network and interface expansions are available?
Answer: Raspberry Pi CM4 integrates a Gigabit Ethernet PHY with IEEE 1588 support and provides a PCIe Gen 2 x1 interface for adding AI accelerators or wireless modules .
Question: What models and antenna options exist?
Answer: Raspberry Pi CM4 models vary by Wireless (Yes/No) and eMMC size. Wireless variants support either PCB trace antennas or external IPEX connectors .
Question: What are the typical applications?
Answer: Raspberry Pi CM4 is ideal for industrial gateways, digital signage, IoT edge nodes, and medical devices requiring long-term high-reliability operation .