BW15

by Ai-Thinker Co., Ltd.

Product page

• General info
• Vendor datasheet

Parameter	Value
Board code	bw15
MCU	RTL8720CF
Manufacturer	Realtek
Series	AmebaZ2
Frequency	100 MHz
Flash size	2 MiB
RAM size	256 KiB
Voltage	3.0V - 3.6V
I/O	13x GPIO, 8x PWM, 3x UART
Wi-Fi	802.11 b/g/n
BLE	v4.2
FCC ID	2AXVG-BW15

Usage

Board code: bw15

In platformio.ini:

[env:bw15]
platform = libretiny
board = bw15
framework = arduino

In ESPHome YAML:

rtl87xx:
  board: bw15

Pinout

Pin functions

Name(s)	UART	I²C	SPI	PWM	Other
PA00	RX1			PWM0	SWCLK, TCK
PA01	TX1			PWM1	SWDIO, TMS
PA02	RX1	SCL0	CS0	PWM2	TDO
PA03	TX1	SDA0	SCK0	PWM3	TDI
PA04			MOSI0	PWM4	tRST
PA13	RX0			PWM7
PA14	TX0			PWM2
PA15	RX2	SCL0	CS0	PWM3
PA16	TX2	SDA0	SCK0	PWM4
PA17				PWM5
PA18				PWM6
PA19		SCL0	MOSI0	PWM7
PA20		SDA0	MISO0	PWM0

Flash memory map

Flash size: 2 MiB / 2,097,152 B / 0x200000

Hex values are in bytes.

Name	Start	Length	End
Partition Table	0x000000	4 KiB / 0x1000	0x001000
System Data	0x001000	4 KiB / 0x1000	0x002000
Calibration	0x002000	4 KiB / 0x1000	0x003000
(reserved)	0x003000	4 KiB / 0x1000	0x004000
Boot Image	0x004000	32 KiB / 0x8000	0x00C000
OTA1 Image	0x00C000	992 KiB / 0xF8000	0x104000
OTA2 Image	0x104000	992 KiB / 0xF8000	0x1FC000
Key-Value Store	0x1FC000	16 KiB / 0x4000	0x200000