Libre Computer Board ALL-H3-CC

The Libre Computer Board ALL-H3-CCs are H2+ / H3 / H5 powered development boards originally introduced via a Kickstarter campaign in 2017.

Points distinguishing this board from others:
 * Raspberry Pi 3 compatible form factor
 * eMMC 4.x module port (8/16/32/64/128GB)
 * CE/FCC certification
 * Big push-pin heatsink with thermal tape, covering SoC and ram
 * Quality components, tier-1 ram chips

This board is produced in white colour and has 3 variants that only differ in SoC/ram used: Otherwise dimensions, component and port locations are identical.
 * ALL-H3-CC H2+ 512MB (Tritium IoT)
 * ALL-H3-CC H3 1GB (Tritium 1GB)
 * ALL-H3-CC H5 2GB (Tritium 2GB)

= Identification =

The PCB has the following silkscreened on it: Libre Computer Board ALL-H3-CC-V1.0-A

= Sunxi support =

Current status
The boards are supported by both mainline U-Boot and kernels.

Manual build
You can build things for yourself by following our Manual build howto and by choosing from the configurations available below.

Mainline U-Boot
Three build targets are provided, one for each board version:
 * libretech_all_h3_cc_h2_plus_defconfig (H2+ board, since U-Boot v2018.07)
 * libretech_all_h3_cc_h3_defconfig (H3 board, since U-Boot v2018.03)
 * libretech_all_h3_cc_h5_defconfig (H5 board, since U-Boot v2018.07)

Mainline kernel
Three device-tree binaries are provided, one for each board version:
 * sun8i-h2-plus-libretech-all-h3-cc.dtb (H2+ board)
 * sun8i-h3-libretech-all-h3-cc.dtb (H3 board)
 * sun50i-h5-libretech-all-h3-cc.dtb (H5 board)

= Expansion Port =

Raspberry Pi model B+ compatible 40-pin, 0.1" connector with several low-speed interfaces.

= eMMC port =

= Tips, Tricks, Caveats =

Power
MicroUSB power is routed through 2A fuse (1F1). Connecting power through GPIO pins bypasses over voltage protection circuit. Each of USB-A jacks is routed through 500mA fuse (so you can not connect 1A HDD, also, you can not draw more than 500mA combined from the same dual-jack).

CPU power
H2+ and H3 boards supply single 1.2V to CPU using AXP8036 (1.1V on H5), which means maximum cpu freq is limited to 1008MHz.

USB-OTG
USB-OTG port is located in one of USB-A jacks. That's top left one on v1.0.

FEL mode
The U-BOOT button next the the µUSB connector triggers the FEL mode.

Buttons

 * UBOOT (K1)
 * Power (K2), PL2

LEDs
The board has three LEDs:
 * Blue LED (Status), connected to the PA07 pin.
 * Green LED (Power), connected to the PL10 pin.
 * Red LED, connected to the VCC3V3-IR.

ESD & over-current protections
Based on the schematic Rev 1.0 (November 17, 2017) the board incorporates the following protections:

Locating the UART


The UART pins are located between HDMI and power jack on the board. Marked on the PCB (simplified layout: ..board-edge..GND|TX|RX. Just attach some leads according to our UART Howto.

= Pictures =

= See also =
 * Schematics
 * Kickstarter campaign (ended)