Data Manual

Electrical Characteristics

Characteristic	Description
Input Voltage	5V DC
Input Current	2A
Output Voltage	5V DC
Output Current	MAX 2.5A
Power Interface	TYPE-C USB
Power Source	Built-in 18650 Li-ion battery / external 5V via USB
Battery Protection	Reverse-polarity, over-charge, and over-discharge protection
PIN Voltage	TTL level 3.3V

GPIO	Function
GPIO0	5-way joystick RIGHT
GPIO1	SCL (microphone / accelerometer & magnetometer / PMU)
GPIO2	SDA (microphone / accelerometer & magnetometer / PMU)
GPIO3	INT (microphone / accelerometer & magnetometer)
GPIO6	LCD SDA
GPIO7	LCD SCL
GPIO8	LCD RS
GPIO9	LCD RES
GPIO10	LCD CS
GPIO11	LCD BL
GPIO12	Buzzer IN
GPIO18	5-way joystick UP
GPIO40	PMU SCK
GPIO41	PMU SD
GPIO44	5-way joystick CENTRE
GPIO45	5-way joystick DOWN
GPIO46	5-way joystick LEFT

Peripheral mapping overview:

Peripheral	Model	Description
Microphone	SPM1423HM4H-B	Digital microphone
Display	ST7789	1.14-inch color TFT LCD
Accelerometer & Magnetometer	BMI270 & BMM150	9-axis inertial measurement
Power Management	SW6106	PMU power management
Buzzer	Passive SMD	Passive buzzer

Pin	Function	Control Port
PIN1	VCC output (5V)	GPIO43 (high-impedance off, low-level on)
PIN2	GPIO	GPIO14
PIN3	GND	Direct GND
PIN4	-	-
PIN5	GPIO	GPIO13

note

The display side is the "front". The 5P-PIN order is "from left to right" when viewed from the front.

Pin	Function	Control Port
PIN1	VCC output (5V)	GPIO43 (high-impedance off, low-level on)
PIN2	GND	Direct GND
PIN3	GPIO	GPIO42
PIN4	GPIO	GPIO15
PIN5	GPIO	GPIO16

note

The display side is the "front". The 5P-PIN order is "from top to bottom" when viewed from the front.

Please contact us for the schematic diagram.

Chip manuals, reference materials, and other development resources: