BPI-Leaf-S3

Introduction

The Banana Pi Leaf series are low-power microcontrollers designed for the Internet of Things.

The Leaf-S3's onboard ESP32-S3 chip is powered by an Xtensa® 32-bit LX7 dual-core processor with a main frequency of up to 240 MHz.

It supports 2.4 GHz Wi-Fi and Bluetooth® LE dual-mode wireless communication, the peripheral is compatible with low-power hardware design, and the power consumption is only 10uA in deep sleep mode.

The main controller supports two power supply modes: USB and external 3.7V lithium battery, which can realize the function of automatic power switching under dual power supply, and supports USB charging mode. Small size, convenient interface, easy to use, and can be directly applied to low-power IoT projects.

In terms of programming, Leaf-S3 motherboard supports ESP-IDF, Arduino, micropython and other methods for programming and development.

All IO pins corresponding to the chip are marked on the Leaf-S3 motherboard, which lowers the threshold for use.

Key Features

• ESP32-S3，Xtensa® 32 bit LX7
• External PSRAM , FLASH
• Ultra-low power 10uA
• 2.4G WIFI ，Bluetooth 5 ，Bluetooth mesh
• GPIO , ADC , TOUCH , PWM , I2C , SPI , RMT , I2S , UART , LCD，CAMERA ，USB , JTAG
• 1* 4pin I2C connector
• 1 * USB Type-C
• 1 * 2pin battery connector，support charging
• 1 * Neopixel LED

Hardware

Hardware sketch map

Hardware Spec

BPI-Leaf-S3 Spec
SoC	ESP32-S3，Xtensa® dual-core 32-bit LX7 microprocessor
Clock Frequency	240MHz MAX
Ambient Temperature	-40℃~+85℃
Internal ROM	384 KB
Internal SRAM	320 KB
External FLASH ROM	8MB
External PSRAM	8MB
WIFI	IEEE 802.11 b/g/n ，2.4Ghz，150Mbps
Bluetooth	Bluetooth 5 ，Bluetooth mesh
GPIO	BPI-Leaf-S3 has led out 36 available gpios
ADC	2 × 12-bit SAR ADCs, up to 20 channels
Touch Sensor	14
SPI	4
I2C	2
I2S	2
LCD	1 × LCD interface (8-bit ~16-bit parallel RGB, I8080 and MOTO6800)
CAMERA	1 × DVP 8-bit ~16-bit camera interface
UART	3
PWM	8 channels 14 bits
MCPWM	2
USB	1 × full-speed USB OTG，female Type-C socket
USB Serial/JTAG controller	1，CDC-ACM ，JTAG
Temperature sensor	1，range of –20 °C to 110 °C
SD/MMC	1 × SDIO host controller with 2 slots,SD 3.0,SD 3.01,SDIO 3.0,CE-ATA 1.1,MMC 4.41,eMMC 4.5,eMMC 4.51
TWAI® controller	1 ，compatible with ISO 11898-1 (CAN Specification 2.0)
General DMA controller (GDMA)	5 transmit channels and 5 receive channels
RMT	4 TX channels,4RX channels.Eight channels share a 384 x 32-bit RAM
Pulse Count Controller	4 independent pulse counters (units).Each unit consists of two independent channels
Timers	4 × 54-bit general-purpose timers.1 × 52-bit system timer.3 × watchdog timers
External crystal oscillator	40Mhz
RTC and Low­Power Management	Power Management Unit (PMU) + Ultra-­Low-­Power Coprocessor(ULP)
Deep-sleep consumption current	10uA
Operating Voltage	3.3V
Input Voltage	3.3V~5.5V
Maximum discharge current	[email protected] LDO
USB charge	Support
Maximum charging current	500mA
Neopixel LED	1

Hardware Dimensions

BPI-Leaf-S3 Dimensions
管脚间距	2.54mm
安装孔间距	23mm/ 62.25mm
安装孔尺寸	内径2mm/外径3mm
主板尺寸	26 × 65.25(mm)/1.02 x 2.57(inches)
板厚	1.2mm

管脚间距兼容万能板（洞洞板、点阵板），面包板，便于调试应用。

GPIO Pin define

BPI-Leaf-S3 GPIO Pin define
外设接口	信号	管脚
ADC	ADC1_CH0~9	GPIO 1~10
	ADC2_CH0~9	GPIO 11~20
触摸传感器	TOUCH1~14	GPIO 1~14
JTAG	MTCK	GPIO 39
	MTDO	GPIO 40
	MTDI	GPIO 41
	MTMS	GPIO 42
UART	默认分配管脚，可重定义为任意GPIO
	U0RXD_in	GPIO 44
	U0CTS_in	GPIO 16
	U0DSR_in	任意GPIO
	U0TXD_out	GPIO43
	U0RTS_out	GPIO 15
	U0DTR_out	任意GPIO
	U1RXD_in	GPIO 18
	U1CTS_in	GPIO 20
	U1DSR_in	任意GPIO
	U1TXD_out	GPIO 17
	U1RTS_out	GPIO 19
	U1DTR_out	任意GPIO
	U2	任意GPIO
I2C	任意GPIO
PWM	任意GPIO
I2S	任意GPIO
LCD	任意GPIO
CAMERA	任意GPIO
RMT	任意GPIO
SPI0/1	已用于FLASH与PSRAM
SPI2/3	任意GPIO
脉冲计数器	任意GPIO
USB OTG	D-	GPIO 19（内部 PHY）
	D+	GPIO 20（内部 PHY）
	VP	GPIO 42（外部 PHY）
	VM	GPIO 41（外部 PHY）
	RCV	GPIO21（外部 PHY）
	OEN	GPIO 40（外部 PHY）
	VPO	GPIO 39（外部 PHY）
	VMO	GPIO38（外部 PHY）
USB Serial/JTAG	D-	GPIO 19（内部 PHY）
	D+	GPIO 20（内部 PHY）
	VP	GPIO 42（外部 PHY）
	VM	GPIO 41（外部 PHY）
	OEN	GPIO 40（外部 PHY）
	VPO	GPIO 39（外部 PHY）
	VMO	GPIO38（外部 PHY）
	SD/MMC	任意GPIO
MCPWM	任意GPIO
TWAI	任意GPIO
彩色LED	GPIO 48