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Revision as of 17:29, 2 March 2022
Contents
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 | 支持 |
| 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 | |
