Raspberry Pi Schematic [cracked] (2024)

This transparency serves two primary purposes. First, it provides an invaluable educational resource for students and engineers who wish to understand how a System on Chip (SoC) integrates with power management, memory, and peripherals. Second, it enables the creation of "HATs" (Hardware Attached on Top) and industrial carrier boards, allowing third parties to design peripherals that interface correctly with the Pi’s GPIO (General Purpose Input/Output) pins.

The schematic also tells the story of memory integration. Early Raspberry Pi models utilized a Package-on-Package (PoP) design, where the RAM chip was soldered directly on top of the SoC. The schematic for these models shows the direct address and data bus connections between the two stacked dies. raspberry pi schematic

Here are some common symbols used on the Raspberry Pi schematic: This transparency serves two primary purposes

| Feature | Pi 4 (BCM2711) | Pi 5 (BCM2712) | |--------|--------------|--------------| | | DA9091 (custom) | MxL7704 (more I²C registers) | | DDR type | LPDDR4-3200 | LPDDR4X-4267 (lower voltage) | | PCIe | None (USB3 only) | PCIe 2.0 x1 (via external controller) | | RP1 I/O controller | No | Yes – offloads GPIO, SPI, I²C from main SoC | | Debug UART | 3.3V level | 3.3V + ESD protection array | The schematic also tells the story of memory integration