Recently the developers of the Raspberry Pi project have made the announcement that they have put a Raspberry Pi Compute Module 3+ card on sale to the public (CM3 +) improved.
This It is a portable version of the Raspberry Pi 3 B + model, designed in a notebook memory form factor (DDR2 SODIMM, size 67.6 x 30 mm) and compatible with previously released I / O boards (Compute Module IO Board).
About the Raspberry Pi Compute Module 3+
Last year, the Raspberry Pi Foundation introduced the Raspberry Pi 3B + board with a slightly faster Broadcom BCM2837B0 processor, Gigabit Ethernet, and 802.11ac WiFi.
So it would make sense for the base to provide an upgrade to their CM3 Compute Modules with the Broadcom BCM2837B0 processor and that is exactly what they have done with the launch of the Raspberry Pi 3+ Compute Module for $ 25 and up.
This new Raspberry Pi Compute Module 3+ includes a 2837-bit BCM0B64 SoC (ARMv8, Quad Core, 1.4Ghz), identical to the Raspberry Pi 3 B +.
As in the Compute Module 3 model above, RAM size is 1GB, but Flash size increases from 4GB to 8GB, and options with 16GB and 32GB Flash are also available.
The connector is identical to the RAM slots on laptops.
In addition to the modernization of the SoC in the new plate the temperature control improved.
When the temperature of the chip is up to 70 °, the frequency is set to 1.4GHz, but if the temperature exceeds 70 °, the frequency decreases to 1.2GHz and the voltage applied to the chip also decreases, which minimizes the achievement of the cutting temperature (80 °).
The operating temperature range has been expanded and now ranges from -20 ° C to 70 ° C.
Features
Two versions of the Raspberry Pi Compute Module 3+ are introduced
This new plate It comes in two versions one which is the Lite version with an SD card slot and the full version with an eMMC flash memory chip.
The cost of Compute Module 3+ with 8 GB Flash is $ 30 ($ 16 GB - $ 35, $ 32 GB - $ 40), Lite version - $ 25.
The wiring diagrams and boards are available under a free license. As an operating system, Raspbian is offered.
There are four variants of Raspberry Pi Compute Module 3+ with different storage options and sharing the following specifications:
- SoC - Broadcom BCM2837 B0 53GHz Quad Core Cortex A1,2 Processor with Videocore IV GPU
- 1GB LPDDR2 SDRAM memory
- Storage
- CM3+/Lite : SD card signals through SO-DIMM connector
- CM3 + / 8GB - 8GB eMMC flash
- CM3 + / 16GB - 16GB eMMC flash memory
- CM3 + / 32GB - 32GB eMMC flash memory
- 200-pin connector with:
- 48x GPIO
- 2x I2C, 2x SPI, 2x UART
- 2x SD / SDIO, 1x NAND interface (SMI)
- 1x HDMI 1.3a
- 1x USB 2.0 HOST/OTG
- 1x DPI (parallel RGB display)
- 1x 4-lane CSI camera interface (up to 1Gbps per lane), 1x 2-lane CSI camera interface (up to 1Gbps per lane)
- 1x 4-lane DSI display interface (up to 1 Gbps per lane), 1x 2-lane DSI display interface (up to 1 Gbps per lane)
- Power supply: VBAT (2.5V to 5.0V) for BCM2837 processor core, 3.3V for PHY, UI and eMMC flash, 1.8V for PHY, IO and SDRAM, VDAC (2.8V typ.)
- For composite video DAC, GPIO0-27_VREF & GPIO28-45_VREF (1.8 to 3.3V) for the two GPIO banks.
Compute module is troublesome to use without special I / O cards, but the module is designed mainly not for separate use, but to simplify the integration of Raspberry Pi technologies with various products and to create embedded industrial and specialized multimedia systems.
Through the SODIMM contacts, power is supplied, USB ports, two HDMI ports for connecting displays and two ports for connecting cameras, allowing the board to be used for integration with 3D televisions.
For example, Support for the Raspberry Pi Compute Modules is already implemented in NEC widescreen monitors, which can be turned into a standalone multimedia system by connecting these boards.