Raspberry Pi Compute Module 4 Aratohu Kaiwhakamahi
Colophon
© 2022-2025 Raspberry Pi Ltd
Kua raihanatia tenei tuhinga i raro i a Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND)
| Tukua | 1 |
| Hanga rā | 22/07/2025 |
| Hanga putanga | 0afd6ea17b8b |
Panui Whakakape ture
TECHNICAL AND RELIABILITY DATA FOR RASPBERRY PI PRODUCTS (INCLUDING DATASHEETS) AS MODIFIED FROM TIME TO TIME (“RESOURCES”) ARE PROVIDED BY RASPBERRY PI LTD (“RPL”) “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL RPL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF USE, DATA, OR PROFITS, OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE RESOURCES, EVEN IF ADVISED OF THE POSSI BILITY OF SUCH DAMAGE.
RPL reserves the right to make any enhancements, improvements, corections or any other modifications to the RESOURCES or any products described in them at any time and without further notice
Ko te NGĀ RAUEMI are intended for skilled users with suitable levels of design knowledge. Users are solely responsible for their selection and use of the RESOURCES and any application of the products described in them. User agrees to indemnify and hold RPL harmless against all liabilities, costs, damages or other losses arising out of their use of the RESOURCES
Ka whakawhiwhia e RPL ki nga kaiwhakamahi te whakaaetanga ki te whakamahi i nga RESOURCES anake me nga hua Raspberry Pi. Ko era atu whakamahinga katoa o nga RAUEMI ka rahuitia. Karekau he raihana e tukuna ki tetahi atu RPL, ki etahi atu mana mana hinengaro tuatoru ranei.
NGA WHAKAMAHI WHAKAMAHI KAUPAPA. Raspberry Pi products are not designed, manufactured or intended for use in hazardous environments requiring fail safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, weapons systems or safety-critical applications (including life support systems and other medical devices), in which the failure of the products could lead directly to death, personal injury or severe physical or environmental damage (“High Risk Activities). RPL specifically disclaims any express or implied warranty of fitness for High Risk Activities and accepts no liability for use or inclusions of Raspberry Pi products in High Risk Activities
Raspberry Pi products are provided subject to RPLs Standard Terms. RPLs provision of the RESOURCES does not expand or otherwise modify RPL’s Nga Tikanga Paerewa tae atu engari kaua e whakawhäitihia ki nga whakakao me nga whakamana kua whakaatuhia ki roto.
Tuhinga o mua putanga
| Tukua | Rā | Whakaahuatanga |
| 1 | Mar 2025 | Initial release. This document is heavily based on the ‘Raspberry Pi Compute Module 5 forward guidance’ whitepaper. |
Te whānuitanga o te tuhinga
E pa ana tenei tuhinga ki nga hua Raspberry Pi e whai ake nei:
| Pi 0 | Pi 1 | Pi 2 | Pi 3 | Pi 4 | Pi 400 | Pi 5 | Pi 500 | CM1 | CM3 | CM4 | CM5 | Piko | Piko2 | ||||
| 0 | W | H | A | B | A | B | B | Katoa | Katoa | Katoa | Katoa | Katoa | Katoa | Katoa | Katoa | Katoa | Katoa |
Kupu Whakataki
Ko te Raspberry Pi Compute Module 5 e haere tonu ana i te tikanga Raspberry Pi mo te tango i te rorohiko Rahipere Pi tino nui me te whakaputa i tetahi hua iti, taputapu-rite e tika ana mo nga tono whakauru. He rite tonu te ahua o te Rahipere Pi Compute Module 5 ki te Raspberry Pi Compute Module 4 engari he pai ake te mahinga me te huinga ahuatanga pai ake. Ae ra, he rereke nga rereketanga i waenga i te Raspberry Pi Compute Module 4 me te Raspberry Pi Compute Module 5, a ka whakaahuahia enei i roto i tenei tuhinga.
FAKATOKANGA
For the few customers who are unable to use Raspberry Pi Compute Module 5, Raspberry Pi Compute Module 4 will stay in production until at least 2034.
The Raspberry Pi Compute Module 5 datasheet should be read in conjunction with this whitepaper.
https://datasheets.raspberrypi.com/cm5/cm5-datasheet.pdf
Ko nga ahuatanga matua
Raspberry Pi Compute Module 5 has the following features:
- Quad-core 64-bit Arm Cortex-A76 (Armv8) SoC clocked @ 2.4GHz
- 2GB, 4GB, 8GB, or 16GB LPDDR4 SDRAM
- On-board eMMC flash memory, OGB (Lite model), 16GB, 32GB, or 64GB options
- 2x USB 3.0 tauranga
- 1 Gb Ethernet interface
- 2x 4-lane MIPI ports supporting both DSI and CSI-2
- 2x HDMI ports able to support 4Kp60 simultaneously
- 28x GPIO pins
- On-board test points to simplify production programming
- Internal EEPROM on the bottom to improve security
- On-board RTC (external battery via 100-pin connectors)
- On-board fan controller
- On-board Wi-Fi®/Bluetooth (depending on SKU)
- 1-lane PCIe 2.0′
- Type-C PD PSU support
FAKATOKANGA
Not all SDRAM/eMMC configurations are available. Please check with our sales team.
In some applications PCIe Gen 3.0 is possible, but this is not officially supported.
Raspberry Pi Compute Module 4 hototahitanga
For most customers, Raspberry Pi Compute Module 5 will be pin-compatible with Raspberry Pi Compute Module 4.
The following features have been removed/altered between the Raspberry Pi Compute Module 5 and Raspberry Pi Compute Module 4 models:
- Ataata hiato
- The composite output available on Raspberry Pi 5 is NOT routed out on Raspberry Pi Compute Module 5
- 2-lane DSI port
- There are two 4-lane DSI ports available on Raspberry Pi Compute Module 5, muxed with the CSI ports for a total of two
- 2-lane CSI port
- There are two 4-lane CSI ports available on Raspberry Pi Compute Module 5, muxed with the DSI ports for a total of two
- 2x ADC inputs
Maharahara
Raspberry Pi Compute Module 4’s maximum memory capacity is 8GB, whereas Raspberry Pi Compute Module 5 is available in a 16GB RAM variant.
Unlike Raspberry Pi Compute Module 4, Raspberry Pi Compute Module 5 is NOT available in a 1GB RAM variant.
Ororongo tairitenga
Analogue audio can be muxed onto GPIO pins 12 and 13 on Raspberry Pi Compute Module 5, in the same way as on Raspberry Pi Compute Module 4.
Use the following device tree overlay to assign analogue audio to these pins:
Due to an errata on the RP1 chip, GPIO pins 18 and 19, which could be used for analogue audio on Raspberry Pi Compute Module
4, are not connected to the analogue audio hardware on Raspberry Pi Compute Module 5 and cannot be used.
FAKATOKANGA
The output is a bitstream rather than a genuine analogue signal. Smoothing capacitors and an ampka hiahiatia he kaiwhakarewa i runga i te papa IO hei peia he putanga taumata-raina.
Huringa ki USB boot
USB booting from a flash drive is only supported via the USB 3.0 ports on pins 134/136 and 163/165
Raspberry Pi Compute Module 5 does NOT support USB host boot on the USB-C port
Unlike the BCM2711 processor, the BCM2712 does not have an XHCI controller on the USB-C interface, just a DWC2 controller on pins 103/105. Booting using 1800t is done via these pins.
Huri ki te tautuhi kōwae me te aratau hiko-iho
1/0 pin 92 is now set to w Button rather than sus PG this means you need to use a PMIC EN to reset the module.
The PRIC ENABLE Signal resets the PMIC, and therefore the SoC. You can view PRIC EN when it’s driven low and released, which is functionally similar to driving tus Po low on Raspberry Pi Compute Module 4 and releasing it.
Raspberry Pi Compute Module 4 has the added benefit of being able to reset peripherals via the nEXTRST signal. Raspberry Pi Compute Module 5 will emulate this functionality on CAM GPIOT.
GLOBAL EN/PHIC EN are wired directly to the PMIC and bypass the OS completely. On Raspberry Pi Compute Module 5, use
GLOBAL EN/PHIC Es to execute a hard (but unsafe) shutdown
If there is a need, when using an existing 10 board, to retain the functionality of toggling I/O pin 92 to start a hard reset, you should intercept the Button at the software level; rather than having it invoke a system shutdown, it can be used to generate a software interrupt and, from there, to trigger a system reset directly (eg. write to S)
Device tree entry handling a power button (arch/arm64/boot/dts/broadcom/bcm2712-rpi-cm5.dtsi).
Code 116 is the standard event code for the kernel’s KEY POWER event, and there is a handler for this in the OS.
Raspberry Pi recommends using kernel watchdogs if you are concerned about the firmware or the OS crashing and leaving the power key unresponsive. ARM watchdog support is already present in Raspberry Pi OS via the device tree, and this can be customised to individual use cases. In addition, a long press/pull on the PIR Button (7 seconds) will cause the PMIC’s built-in handler to shut down the device.
Nga huringa pinout taipitopito
CAM1 and DSI1 signals have become dual-purpose and can be used for either a CSI camera or a DSI display.
The pins previously used for CAMO and DSIO on Raspberry Pi Compute Module 4 now support a USB 3.0 port on Raspberry Pi Compute Module 5.
The original Raspberry Pi Compute Module 4 VBAC COMP pin is now a VBUS-enabled pin for the two USB 3.0 ports, and is active high. Raspberry Pi Compute Module 4 has extra ESD protection on the HDMI, SDA, SCL, HPD, and CEC signals. This is removed from Raspberry Pi Compute Module 5 due to space limitations. If required, ESD protection can be applied to the baseboard, although Raspberry Pi Ltd does not regard it as essential.
|
Pin |
CM4 | CM5 | Kōrero |
| 16 | SYNC_IN | Fan_tacho | Fan tacho input |
| 19 | Ethernet nLED1 | Fan_pwn | Fan PWM output |
| 76 | Kua rahuitia | VBAT | RTC battery. Note: There will be a constant load of a few uA, even if CM5 is powered. |
| 92 | RUN_PG | PWR_Patene | Replicates the power button on Raspberry Pi 5. A short press signals that the device should wake up or shut down. A long press forces shutdown. |
| 93 | nRPIBOOT | nRPIBOOT | If the PWR_Button is low, this pin will also be set low for a short time after power-up. |
| 94 | AnalogIP1 | CC1 | This pin can connect to the CC1 line of a Type-C USB connector to enable the PMIC to negotiate 5A. |
| 96 | AnalogIP0 | CC2 | This pin can connect to the CC2 line of a Type-C USB connector to enable the PMIC to negotiate 5A. |
| 99 | Global_EN | PMIC_ENABLE | No external change. |
| 100 | nEXTRST | CAM_GPIO1 | Pulled up on Raspberry Pi Compute Module 5, but can be forced low to emulate a reset signal. |
| 104 | Kua rahuitia | PCIE_DET_nWAKE | PCIE nWAKE. Pull up to CM5_3v3 with an 8.2K resistor. |
| 106 | Kua rahuitia | PCIE_PWR_EN | Signals whether the PCIe device can be powered up or down. Active high. |
| 111 | VDAC_COMP | VBUS_EN | Output to signal that USB VBUS should be enabled. |
| 128 | CAM0_D0_N | USB3-0-RX_N | May be P/N swapped. |
| 130 | CAM0_D0_P | USB3-0-RX_P | May be P/N swapped. |
| 134 | CAM0_D1_N | USB3-0-DP | USB 2.0 signal. |
| 136 | CAM0_D1_P | USB3-0-DM | USB 2.0 signal. |
| 140 | CAM0_C_N | USB3-0-TX_N | May be P/N swapped. |
| 142 | CAM0_C_P | USB3-0-TX_P | May be P/N swapped. |
| 157 | DSI0_D0_N | USB3-1-RX_N | May be P/N swapped. |
| 159 | DSI0_D0_P | USB3-1-RX_P | May be P/N swapped. |
| 163 | DSI0_D1_N | USB3-1-DP | USB 2.0 signal. |
| 165 | DSI0_D1_P | USB3-1-DM | USB 2.0 signal. |
| 169 | DSI0_C_N | USB3-1-TX_N | May be P/N swapped. |
| 171 | DSI0_C_P | USB3-1-TX_P | May be P/N swapped. |
I tua atu i nga korero o runga ake nei, ko nga tohu PCIe CLK kua kore e hono kaha.
PCB
Raspberry Pi Compute Module 5′s PCB is thicker than Raspberry Pi Compute Module 4′s, measuring at 1.24mm+/-10%.
Te roa o te ara
HDMI0 track lengths have changed. Each P/N pair remains matched, but the skew between pairs is now <1mm for existing motherboards. This is unlikely to make a difference, as the skew between pairs can be in the order of 25 mm.
HDMI1 track lengths have also changed. Each P/N pair remains matched, but the skew between pairs is now <5mm for existing motherboards. This is unlikely to make a difference, as the skew between pairs can be in the order of 25 mm.
Kua huri te roa o te ara Ethernet. Ka noho rite tonu ia takirua P/N, engari ko te piu i waenga i nga takirua he <4mm inaianei mo nga papahoa papa. Kare pea he rerekee tenei, na te mea ko te skew i waenganui i nga takirua kei te 12 mm te raupapa.
Kaihono
Ko nga hononga hono 100-pin e rua kua hurihia ki tetahi waitohu rereke. He hototahi enei ki nga hononga o naianei engari kua whakamatauria ki nga ia teitei. Ko te waahanga whakahiato ka uru ki te papahoa papa Amphenol P/N 10164227-1001A1RLF
Te tahua mana
As Raspberry Pi Compute Module 5 is significantly more powerful than Raspberry Pi Compute Module 4, it will consume more electrical power. Power supply designs should budget for SV up to 2.5A. If this creates an issue with an existing motherboard design, it is possible to reduce the CPU clock rate to lower the peak power consumption.
The firmware monitors the current limit for USB, which effectively means that usb mas surrant, enable is always 1 on CM5, the 10 board design should take the total USB current required into consideration.
The firmware will report the detected power supply capabilities (if possible) via device-tree. On a running system, see /proc/device tree/chosen/poser/Ko enei fileKei te rongoa a s hei 32-bit big-endian raraunga rua.
Nga huringa rorohiko / whakaritenga
Mai i te waahi rorohiko o view, ko nga huringa o nga taputapu i waenga i te Raspberry Pi Compute Module 4 me te Raspberry Pi Compute Module 5 ka huna mai i te kaiwhakamahi e te rakau taputapu hou. files, ko te tikanga ko te nuinga o nga rorohiko e piri ana ki nga API Linux paerewa ka mahi me te kore huringa. Ko te rakau taputapu files whakarite kia utaina nga taraiwa tika mo te taputapu i te wa whakaoho.
Rakau taputapu files ka kitea i roto i te rakau pata Raspberry Pi Linux. Mo te example:
https://github.com/raspberrypi/linux/blob/rpi-612.y/arch/arm64/boot/dis/broadcom/bom2712-pi-om5.dtsi.
Ko nga kaiwhakamahi e neke ana ki te Raspberry Pi Compute Module 5 ka tohutohuhia kia whakamahi i nga putanga rorohiko e tohuhia ana i te ripanga i raro nei, he mea hou ake ranei. Ahakoa kaore he whakaritenga ki te whakamahi i te Raspberry Pi OS, he tohutoro whai hua, na reira ka whakauruhia ki te tepu.
| Pūmanawa | Putanga | Rā | Notes |
| Raspberry Pi OS | Bookworm (12) | ||
| Firmware | From 10 Mar 2025 | Tirohia https://pip.raspberrypi.com/categories/685-app-notes-guides- whitepapers/documents/RP-003476-WP/Updating-Pi-firmware.pdf for details on upgrading firmware on an existing image. Note that Raspberry Pi Compute Module 5 devices come pre-programmed with appropriate firmware | |
| Kernel | 6.12.x | Mai i te 2025 | This is the kernel used in Raspberry Pi OS |
Moving to standard Linux APIs/libraries from proprietary drivers/
mārō
Ko nga huringa katoa kua whakarārangihia i raro nei he wahanga o te whakawhiti mai i te Raspberry Pi OS Bullseye ki te Raspberry Pi OS Bookworm i Oketopa 2023. Ahakoa i taea e Raspberry Pi Compute Module 4 te whakamahi i nga API tawhito kua whakakorea (i te mea kei te noho tonu te firmware tawhito e hiahiatia ana), ehara tenei i te keehi mo te Raspberry Pi Compute Module 5.
Ko te Raspberry Pi Compute Module 5, penei i te Raspberry Pi 5, kei te whakawhirinaki inaianei ki te tapae whakaatu DRM (Kaiwhakahaere Whakaaturanga Tika), kaua ki te puranga tuku iho e kiia nei ko DispmanX. KORE he tautoko firmware i runga i te Raspberry Pi Compute Module 5 mo DispmanX, no reira he mea nui te neke ki DRM.
A similar requirement applies to cameras, Raspberry Pi Compute Module 5 only supports the libcamera library’s API, so older applications that use the legacy firmware MMAL APIs, such as raspi-still and rasps-vid, no longer function.
Ko nga tono e whakamahi ana i te OpenMAX API (kamera, kotēkē) ka kore e mahi i runga i te Raspberry Pi Compute Module 5, no reira me tuhi ano ki te whakamahi V4L2. ExampKa kitea etahi o enei i roto i te putunga libcamera-apps GitHub, kei reira e whakamahia ana ki te uru atu ki te taputapu encoder H264.
OMXPlayer is no longer supported, as it also uses the MMAL API for video playback, you should use the VLC application. There is no command-line compatibility between these applications: see the VLC documentation for details on usage.
Raspberry Pi previously published a whitepaper that discusses these changes in more detail: https://pip.raspberrypi.com/categories/685-app-notes-guides-whitepapers/documents/RP-006519-WP/Transitioning-from-Buliseye-to-Bookworm.pdf.
Nga korero taapiri
While not strictly related to the transition from Raspberry Pi Compute Module 4 to Raspberry Pi Compute Module 5, Raspberry Pi Ltd has released a new version of the Raspberry Pi Compute Module provisioning software and also has two distro generation tools that users of Raspberry Pi Compute Module 5 may find useful.
rpi-sb-provisioner is a minimal-input, automatic secure boot provisioning system for Raspberry Pi devices. It is entirely free to download and use, and can be found on our GitHub page here: https://github.com/raspberrypi/rpi-sb-provisioner.
pi-gen is the tool used to create the official Raspberry Pi OS images, but it is also available for third parties to use to create their own distributions. This is the recommended approach for Raspberry Pi Compute Module applications that require customers to build a custom Raspberry Pi OS-based operating system for their specific use case. This is also free to download and use, and can be found here: https://github.com/RPi-Distro/pi-gen. The pi-gen tool integrates well with rpi-sb-provisioner to provide an end-to-end process for generating secure boot OS images and implementing them on Raspberry Pi Compute Module 5.
rpi-image-gen is a new image creation tool (https://github.com/raspberrypi/rpi-image-gen) that may be more appropriate for more lightweight customer distributions
For bring-up and testing and where there is no requirement for the full provisioning system rpiboot is still available on Raspberry Pi Compute Module 5. Raspberry Pi Ltd recommends using a host Raspberry Pi SBC running the latest version of Raspberry Pi OS and the latest rathoot from https://github.com/raspberrypi/usbboot. You must use the ‘Mass Storage Gadget option when running rpiboot, as the previous firmware-based option is no longer supported.
Nga Taipitopito Whakapā mo etahi atu korero
Whakapā mai
applications@iraspberrypi.com
mena kei a koe etahi patai mo tenei pepa ma.
Web: www.raspberrypi.com
Tuhinga / Rauemi
 |
Kōwae Tātai Raspberry Pi 4 [pdf] Aratohu Kaiwhakamahi Tātaitia te Kōwae 4, Kōwae 4 |