Specifications¶

The sections on this page contain information about the developer kits from this blog post and have been updated to provide more details and links to resources.

Feature	Specification
Processor	Customer grade i.MX 8M Quad [datasheet] and [reference manual] 4 x ARM Cortex-A53 cores 1 x Cortex-M4
Graphics	Vivante GC7000Lite
Memory	3 GB (soldered)
Display	HDMI output via Mini-HDMI Rocktech JH057N00900 MIPI DSI LCD panel: 720x1440 pixels and touch controller
Internal Storage	32 GB eMMC
External Storage	ALPS SCHA4B0419 MicroSD card slot [datasheet]
Camera	Omnivision OV5640 MIPI CSI Camera [datasheet]
USB	Serial Downloader support (loading u-boot via USB) USB-C port including USB-C role switching USB Hub and SD controller
GNSS	ublox MAX-M8Q GNSS (UART3 interface and antenna)
Bluetooth	Bluetooth I2S interface RedPine WiFi/BT M.2 module on SDIO
LAN	1 ⨉ Gigabit Ethernet
WLAN	RedPine WiFi/BT M.2 module on SDIO
WWAN	SIMCom SIM7100E or SIM7100A WWAN module JAE SF56 micro SIM card slot [datasheet]
Smartcard	Microchip SEC1110 smart card reader [datasheet] Amphenol 1010027182 smart card slot [datasheet]
Audio	NXP SGTL5000 codec [datasheet] CUI CMC-2242PBL-A electret condenser microphone [datasheet] PUI Audio AS01508MS-SP11-WP-R speaker [datasheet] CTIA-configured 3.5mm combo jack
Buttons	Power Reset Volume up Volume down
Hardware Kill Switches	WWAN (Modem) Wifi/Bluetooth Microphone/Camera
Accelerometer	ST LSM9D1 accelerometer, gyro, magnetometer
Ambient light, proximity sensor	Included [datasheet]
Notification LED	3 x Power LED indicators (located next to the battery holder on the board) User controllable
Haptic motor	Included
Battery	Texas Instruments BQ25896 battery charge controller [datasheet] COMF BHC-18650-1P 18650 battery holder [datasheet]

System on Chip and Peripherals¶

SPI NOR Flash
Real Time Clock (RTC)

Headers¶

JTAG header (unpopulated)
UART Debug (unpopulated, 2.54 mm / 0.1 inch pitch):

PIN

Color

Function

1

black

GND

2

NC

3

NC

4

green

TX

5

white

RX

6

NC

Note

PIN 1 is the one closest to the volume button while PIN6 is the one closest to the power button. The pin functions are documented from the perspective of a USB to serial adapter. The devkit receives serial input on pin 4 and transmits serial output on pin 5.

PIN	Color	Function
1	black	GND
2		NC
3		NC
4	green	TX
5	white	RX
6		NC

LEDs¶

Silkscreen	Location	Function
D304	Closest to the edge of the board with the power button	Charge controller output voltage (VBAT_REG) is properly outputting its supply voltage.
D301	Between LED D304 and D302	Indicates that there is a good supply voltage from USB VBUS.
D302	Closest to the edge of the board with the reset button	Solid-on: battery is being charged.
		Solid-off: no battery is being charged.
		Blinking (> 9Hz): no battery inserted.
		Blinking (1Hz): Fault condition.