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.

System on Chip and Peripherals¶

Customer grade i.MX 8M Quad [datasheet] and [reference manual]

Four ARM Cortex-A53 cores.

One Cortex-M4.

Vivante GC7000Lite graphics

1 ⨉ Gigabit Ethernet

32 GB eMMC

3GB RAM

SPI NOR Flash

Real Time Clock (RTC)

Micro SD Card¶

ALPS SCHA4B0419 MicroSD card slot [datasheet]

Micro SIM Card¶

JAE SF56 micro SIM card slot [datasheet]

Smart Card¶

Microchip SEC1110 smart card reader [datasheet]

Amphenol 1010027182 smart card slot [datasheet]

Battery¶

Texas Instruments BQ25896 battery charge controller [datasheet]

COMF BHC-18650-1P 18650 battery holder [datasheet]

Display¶

HDMI output via Mini-HDMI

Rocktech JH057N00900 MIPI DSI LCD panel: 720x1440 pixels and touch controller

Camera¶

Omnivision OV5640 MIPI CSI Camera [datasheet]

Push Buttons¶

Power

Reset

Volume up

Volume down

Hardware Kill Switches¶

WWAN (Modem)

Wifi/Bluetooth

Microphone and Camera

Audio¶

NXP SGTL5000 audio codec [datasheet]

CUI CMC-2242PBL-A electret condenser microphone [datasheet]

PUI Audio AS01508MS-SP11-WP-R speaker [datasheet]

Headphones and external microphone via CTIA-configured 3.5mm jack

Bluetooth, Wi-Fi, WWAN¶

Bluetooth I2S interface

Bluetooth (SDIO)

RedPine WiFi/BT M.2 module on SDIO

SIMCom SIM7100E or SIM7100A WWAN module

GNSS¶

ublox MAX-M8Q GNSS (UART3 interface and antenna)

Sensors and Motors¶

Haptic motor

ST LSM9D1 accelerometer, gyro, magnetometer

Proximity / ambient light sensor [datasheet]

USB¶

Serial Downloader support (loading u-boot via USB)

USB-C port including USB-C role switching

USB Hub and SD controller

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

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.

LEDs¶

Power indicator

The three power LED indicators are located next to the battery holder on the board.

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

If solid-on, the battery is being charged.
If solid-off, then no battery is being charged.
If blinking at ~9Hz or more, then no battery is
inserted.
If blinking at 1Hz then there is some fault
condition.

User controllable LED

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	If solid-on, the battery is being charged. If solid-off, then no battery is being charged. If blinking at ~9Hz or more, then no battery is inserted. If blinking at 1Hz then there is some fault condition.

For more details have a look at the schematics.