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Identification

Xunlong Orange Pi 4A
Manufacturer	OrangePi
Dimensions	89mm x 56mm x 1.6mm
Release Date	November 2024
Website	Device Product Page
Specifications
SoC	T527 @ 1.8 Ghz
DRAM	2GiB/4GiB LPDDR4/4X
NAND	eMMC connector
Power	DC 5V @ 5A via USB-C connector
Features
Video	HDMI 2.0a (Type A full), 4-lane MIPI-DSI, eDP1.3
Audio	3.5mm audio in/out plug
Network	WiFi 802.11 b/g/n/ac (AP6256), 10/100/1000Mbps Ethernet (Motorcomm YT8531C)
Storage	µSD, eMMC connector, 128Mbit SPI flash (XMC XM25QU128), M.2 M Key for 2280 SSD
USB	3x USB2.0 Host, 1x USB2.0 OTG, 1x USB 2.0 HOST via 4-pin expansion
Camera	1x 2-lane MIPI-CSI, 1x 4-lane MIPI-CSI camera interface
Headers	40pin GPIO, 3pin debug serial port, 2pin RTC battery, 4pin ADC

The PCB has the following silkscreened on it:

Orange Pi Logo
OPI 4A V1.1

Sunxi support

Current status

Not Supported

Images

Optional. Add MANUFACTURER DEVICE specific sunxi ROM images here. E.g. a livesuit image or some other linux image which uses linux-sunxi code. Do not put non-sunxi images here, they should live under See also. If no sunxi based images are available, this section can be removed.

HW-Pack

Optional. Add MANUFACTURER DEVICE sunxi HW-pack specifics here. When empty, this section can be removed.

BSP

Optional. Add MANUFACTURER DEVICE sunxi BSP specifics here. When empty, this section can be removed.

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

Only useful for A10/A10s/A13 and A20 based devices. Remove this section otherwise.

Use the MANUFACTURER_DEVICE build target.

Mainline U-Boot

Use the MANUFACTURER_DEVICE build target.

Linux Kernel

Sunxi/Legacy Kernel

Only useful for A10/A10s/A13 and A20 based devices. Remove this section otherwise.

Use the MANUFACTURER_DEVICE.fex file.

Mainline kernel

Use the FAMILY-CHIP-DEVICE.dtb device-tree binary.

Expansion ports

The OrangePi 4A has a 40-pin, 0.1" populated connector with several low-speed interfaces.

The primary function follows loosely the Raspberry Pi pin assignment, but pinmuxing gives access to more interfaces (not all at the same time).

GPIO number	Function4	Function3	Function2	Function1	PIN#	PIN#	Function1	Function2	Function3	Function4	GPIO number
				+3.3V	1	2	+5.0V
257		UART4-TX	TWI4-SDA	PI1	3	4	+5.0V
256	PWM0-1	UART4-RX	TWI4-SCK	PI0	5	6	GND
36		TWI1-SCK	PWM0-8	PB4	7	8	PB13	UART7-TX	PWM0-4		45
				GND	9	10	PB14	UART7-RX	PWM0-5		46
32	SPI2-CSO	PWM0-6	UART2-TX	PB0	11	12	PB5	PWM0-9	TSI1-SDA		37
33	SPI2-CLK	PWM0-7	UART2-RX	PB1	13	14	GND
34	SPI2-MOSI			PB2	15	16	PI13			PWM0-14	269
				+3.3V	17	18	PI14			PWM0-15	270
261			SPI1-MOSI	PI4	19	20	GND
260			SPI1-MISO	PI5	21	22	PI6		UART6-TX		258
259	UART5-RX		SPI1-CLK	PI3	23	24	PI2	SPI1_CS0		UART5-TX	262
				GND	25	26	PI7		UART6-RX		263
265			TWI5-SDA	PI9	27	28	PI8	TWI5-SCK			264
35	SPI2-MISO			PB3	29	30	GND
43		PWM0-2		PB11	31	32	PI11	PWM0-12	UART3-TX		267
268		UART3-RX	PWM0-13	PI12	33	34	GND
38			PWM0-10	PB6	35	36	PI10				266
44				PB12	37	38	PB7	PWM0-11			39
				GND	39	40	PB8				40

Tips, Tricks, Caveats

Add MANUFACTURER DEVICE specific tips, tricks, Caveats and nice to have changes here.

FEL mode

The something button triggers FEL mode.

SPI booting

The board contains a 16MB SPI NOR flash chip, and the SoC can boot firmware from there.

Using serial port

Like with other Orange Pi boards, UART uses 3.3V signalling and is 5V tolerant so you can use any of the usual USB-UART dongles. UART pin header is easily accessible.

Locating the UART

The 3 UART pins are located adjacent to the power key and are clearly marked. You can use this serial port to log in or debug the system with a baud rate of 115200, 8 data bits, 1 stop bit, no parity. Just attach some leads according to our UART Howto.

Pictures

Schematic

Schematics 1.1: File:OPI 4A V1 1 SCH.pdf

Xunlong Orange Pi 4A

Contents