esp32-dev/components/esp32-s3_specs.md

ESP32-S3 Specifications

芯片：esp32-s3 | 类别：specs | 信源： Espressif 官方文档

1. Core Architecture

• CPU: Dual-core Xtensa® LX7, 240 MHz.
• Wireless: 802.11 b/g/n (Wi-Fi 4), BLE 5.0 (Mesh support).
• Acceleration: AI Vector instructions for accelerated ML and complex GUI rendering.
• 协处理器: ULP-RISC-V 协处理器.
• Application: High-performance IoT, AI on the edge, and multimedia GUIs.

2. Memory & Storage

• SRAM: 512 KB internal.
• RTC SRAM: 16 KB（Deep-sleep 可保持）.
• ROM: 384 KB.
• PSRAM: Support for Octal SPI PSRAM (max 8 MB) — GPIO33–37 占用.
• 外部 Flash: max 16 MB QSPI/OPI.

3. Peripheral Mapping

• GPIO Count: 45（GPIO0–21, GPIO26–48）.
• ADC: 20 channels, 12-bit SAR（ADC1: GPIO1–10, ADC2: GPIO11–20）.
• DAC: None.（注意：S3 无 DAC！）
• Touch: 14 capacitive touch channels.
• USB: Native USB OTG (GPIO19/20) + USB Serial/JTAG（双 USB 控制器）.
• Hardware PWM: LEDC 8ch and MCPWM ×2.
• UART: 3 controllers.
• I2C: 2 controllers.
• SPI: 4 controllers.
• I2S: 2 controllers.
• CAN (TWAI): 2 controllers.
• LCD Interface: Supports RGB, 8080, and I80 interfaces.
• DVP Camera: 8–16 bit.

4. Hardware Safety & Constraints

• ADC2/WiFi Conflict: ADC2 readings are invalid when Wi-Fi is active. Use ADC1 (GPIO1–10).
• Flash Pins: GPIO26–32.
• Strapping Pins: 0, 3, 45, 46.
• Octal PSRAM: May reserve GPIO33–37（SPIIO4–SPIIO7, SPIDQS）. S3R8/S3R8V 模组这些引脚不可用。
• JTAG: GPIO39–42，不与 Strapping 冲突。
• 供电: 2.7–3.6V, 推荐 3.3V, 纹波 <75mVpp.
• 峰值电流: ~500 mA (WiFi TX).
• Deep-sleep: ~7 µA.
• 工作温度: −40°C ~ +85°C.
• 封装: QFN56 (7×7mm).

5. 与 ESP32/S2 的关键差异

• 核心数：ESP32=双核, ESP32-S2=单核, ESP32-S3=双核
• 蓝牙：ESP32=BR/EDR+BLE, ESP32-S2=❌, ESP32-S3=BLE 5.0
• USB OTG：ESP32=❌, ESP32-S2=✅, ESP32-S3=✅
• USB Serial/JTAG：ESP32=❌, ESP32-S2=❌, ESP32-S3=✅
• AI 加速：ESP32=❌, ESP32-S2=❌, ESP32-S3=✅
• Octal PSRAM：ESP32=❌, ESP32-S2=❌, ESP32-S3=✅
• DAC：ESP32=✅, ESP32-S2=✅, ESP32-S3=❌
• GPIO：ESP32=34, ESP32-S2=43, ESP32-S3=45