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Raspberry Pi Compute Module 4 Lite (Wireless Version) - 2GB RAM
The Raspberry Pi Compute Module 4 represents a huge change for the Compute Module line. The biggest change being the move from the DDR2 SODIMM connector form...
The Raspberry Pi Compute Module 4 represents a huge change for the Compute Module line. The biggest change being the move from the DDR2 SODIMM connector form factor to a high density connector on the bottom of the board. But true to the line, the Compute Module 4 packs all the best features of the Raspberry Pi Model B 4 into a more favorable form-factor for embedded or OEM applications.
The board includes the same 1.5GHz quad-core 64-bit ARM Cortex-A72 CPU on the Raspberry Pi 4 and is capable of 4k Video via dual HDMI interfaces. It has a single-lane PCI 2.0 express interface with dual MIPI DSI display and CSI-2 camera interfaces. For the first time, wireless capability is offered on the Compute Module line in the form of an optional 2.4GHz and 5GHz IEEE 802.11b/g/n/ac wireless LAN and Bluetooth 5.0 radio. The board supports Gigabit Ethernet PHY with IEEE 1588 support and has 28 GPIO pins, with up to 6 × UART, 6 × I2C and 5 × SPI.
This model has 1GB of LPDDR4-3200 SDRAM and no on-board Flash storage along with the wireless capability (2.4GHz and 5GHz IEEE 802.11b/g/n/ac wireless LAN and Bluetooth 5.0).
As with the Compute Module 3+, the Compute Module 4 is available with a choice of eMMC storage densities: 0GB (Lite); 8GB; 16GB; and 32GB along with a choice of DRAM densities: 1GB; 2GB; 4GB; and 8GB. As a result, there are 32 distinct variants of the product, each with its own part number. If you do not see the combination you’re looking for on our site yet, please email support@sparkfun.com.
Jargon buster
Plain-language definitions for the technical terms used above.
- DSI
- DSI stands for Display Serial Interface, a high-speed connection commonly used to send video data from a computer board to a display. It matters because DSI signals are not simple GPIO wires, so the cable, connector, and signal routing need to match the display interface.
- eMMC
- Embedded MultiMediaCard is built-in flash storage soldered onto a board, similar in purpose to an SD card but integrated. It matters because it holds the operating system and files without needing a separate memory card.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- HDMI
- HDMI is a common digital video and audio connection used by computers, media players, and many displays. If a display kit has HDMI input, it is usually much easier to test with a single-board computer because it can act like a normal monitor.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LPDDR4
- A low-power type of RAM commonly used in phones and embedded computers. More LPDDR4 memory lets a board run larger programs, Linux services, or AI models more smoothly.
- MIPI
- MIPI is a high-speed display and camera interface often used inside phones, tablets, and embedded devices. It matters because raw MIPI displays usually need special driver hardware or software support, unlike plug-and-play HDMI screens.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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Raspberry Pi Compute Module 4 Datasheet
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Supplier page — sparkfun.com
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