AFW121T

by 99iot(Shenzhen)co.,ltd

Product page

• Info & flashing guide
• Debugging
• Vendor datasheet

Parameter	Value
Board code	afw121t
MCU	RTL8710BX
Manufacturer	Realtek
Series	AmebaZ
Frequency	62.5 MHz
Flash size	1 MiB
RAM size	256 KiB
Voltage	3.0V - 3.6V
I/O	11x GPIO, 6x PWM, 2x UART, 1x ADC
Wi-Fi	802.11 b/g/n

Usage

Board code: afw121t

In platformio.ini:

[env:afw121t]
platform = libretiny
board = afw121t
framework = arduino

In ESPHome YAML:

rtl87xx:
  board: afw121t

Pinout

Pin functions

Name(s)	UART	I²C	SPI	PWM	Other
PA00				PWM2
PA05				PWM4
PA12				PWM3
PA14				PWM0	SWCLK
PA15				PWM1	SWDIO
PA18	RX0	SCL1	SCK0, SCK1
PA19, ADC1		SDA0	CS0, CS1
PA22		SCL0	MISO0, MISO1	PWM5
PA23	TX0	SDA1	MOSI0, MOSI1	PWM0
PA29	RX2	SCL0		PWM4
PA30	TX2	SDA0		PWM4

Flash memory map

Flash size: 1 MiB / 1,048,576 B / 0x100000

Hex values are in bytes.

Name	Start	Length	End
Boot XIP	0x000000	16 KiB / 0x4000	0x004000
Boot RAM	0x004000	16 KiB / 0x4000	0x008000
(reserved)	0x008000	4 KiB / 0x1000	0x009000
System Data	0x009000	4 KiB / 0x1000	0x00A000
Calibration	0x00A000	4 KiB / 0x1000	0x00B000
OTA1 Image	0x00B000	468 KiB / 0x75000	0x080000
OTA2 Image	0x080000	468 KiB / 0x75000	0x0F5000
Key-Value Store	0x0F5000	16 KiB / 0x4000	0x0F9000
User Data	0x0F9000	28 KiB / 0x7000	0x100000
(reserved)	0x100000	1020 KiB / 0xFF000	0x1FF000
RDP	0x1FF000	4 KiB / 0x1000	0x200000