Libre Computer Board ALL-H3-CC

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Libre Computer Board ALL-H3-CC
All-h3-cc-v1.0-a--h3-with-radiator.jpg
Manufacturer Libre Computer Project
Dimensions 83x55x18mm
Release Date January 2018
Website ALL-H3-CC Product Page
Specifications
SoC H2+, H3, H5 @ 1.0GHz
DRAM 512MiB, 1GiB, 2GiB DDR3 @ 1333MHz, h2+:H5TQ2G63GFR-RDC, h3/h5:H5TQ4G63CFR-RDC
Power DC 5V @ 2A (µUSB)
Features
Video HDMI (Type A - full), CVBS
Audio 3.5mm headphone plug, HDMI, SPDIF, I2S, internal microphone
Network 10/100Mbps Ethernet
Storage µSD, eMMC module port
USB 3 USB2.0 Host, 1 USB2.0 OTG

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:

  • ALL-H3-CC H2+ 512MB (Tritium IoT)
  • ALL-H3-CC H3 1GB (Tritium 1GB)
  • ALL-H3-CC H5 2GB (Tritium 2GB)

Otherwise dimensions, component and port locations are identical.


Contents

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.

Images

HW-Pack

BSP

Manual build

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

U-Boot

Sunxi/Legacy U-Boot

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)

Linux Kernel

Sunxi/Legacy Kernel

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.

2x20 Header
1 3.3V 2 5V
3 TWI0_SDA 4 5V
5 TWI0_SCK 6 GND
7 CPUX-TDO/GPIO-1 8 AP-UART1-TX
9 GND 10 AP-UART1-RX
11 CPUX-TCK/UART2-RX 12 BB-PCM-CLK
13 CPUX-TMS/UART2-TX 14 GND
15 CPUX-TDI/GPIO-2 16 AP-UART1-CTS
17 3.3V 18 AP-UART1-RTS/GPIO-3
19 SPI0-MOSI 20 GND
21 SPI0-MISO 22 UART3-RX/SPI1-CLK/GPIO-4
23 SPI0-CLK 24 SPI0-CS
25 GND 26 SPDIF/GPIO-5
27 I2S0-SCLK/TWI1-SDA 28 I2S0-LRCK/TWI1-CLK
29 I2S0-SDO/GPIO-6 30 GND
31 I2S0-SDI/GPIO-7 32 UART3-TX/SPI1-CS0/GPIO-8
33 PWM1 34 GND
35 BB-PCM-SYNC 36 UART3-RTS/SPI1-MOSI/GPIO-9
37 UART3-CTS/SPI1-MISO/GPIO-10 38 BB-PCM-DIN
39 GND 40 BB-PCM-DOUT

eMMC port

30-pin, 0.4mm connector (2x15)
1 VCC-NAND 2 NC
3 VCC-NAND 4 eMMC-CMD
5 VCC-NAND 6 GND
7 VCC-NAND 8 eMMC-D5
9 VCC-NAND 10 eMMC-D4
11 VCC-NAND 12 eMMC-D0
13 NC 14 eMMC-D1
15 NC 16 GND
17 NC 18 eMMC-D2
19 NC 20 eMMC-D3
21 NC 22 eMMC-D6
23 NC 24 eMMC-D7
25 GND 26 eMMC-RST
27 GND 28 GND
29 GND 30 eMMC-CLK

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:

Protections

x - no protection, ESD - Electrostatic Discharge, OC - Over-current

Comments
1 USB micro (power) ESD OC (2A) Input voltage limited to 5.6V, power supply bypass
2 Micro SD x x
3 eMMC x x
4 Camera x x
5 Dual USB1 ESD OC (500mA) Power supply bypass
6 Dual USB2 ESD OC (500mA) Power supply bypass
7 HDMI ESD x
8 Ethernet ESD N/A Using TVS diodes connected deferentially, over-current protection is not applicable
9 GPIO x x
10 Debug UART ESD  ?
11 Audio jack ESD N/A Output current is internally limited by SoC

Locating the UART

Libre Computer Board ALL-H3-CC UART pins

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

Manufacturer images

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