54 lines
2.3 KiB
Markdown
54 lines
2.3 KiB
Markdown
# ESP32-S3 Specifications
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> **芯片：esp32-s3** | **类别：specs** | **信源：** [Espressif 官方文档](https://docs.espressif.com)
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## 1. Core Architecture
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- **CPU:** Dual-core Xtensa® LX7, 240 MHz.
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- **Wireless:** 802.11 b/g/n (Wi-Fi 4), BLE 5.0 (Mesh support).
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- **Acceleration:** AI Vector instructions for accelerated ML and complex GUI rendering.
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- **协处理器:** ULP-RISC-V 协处理器.
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- **Application:** High-performance IoT, AI on the edge, and multimedia GUIs.
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## 2. Memory & Storage
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- **SRAM:** 512 KB internal.
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- **RTC SRAM:** 16 KB（Deep-sleep 可保持）.
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- **ROM:** 384 KB.
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- **PSRAM:** Support for Octal SPI PSRAM (max 8 MB) — GPIO33–37 占用.
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- **外部 Flash:** max 16 MB QSPI/OPI.
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## 3. Peripheral Mapping
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- **GPIO Count:** 45（GPIO0–21, GPIO26–48）.
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- **ADC:** 20 channels, 12-bit SAR（ADC1: GPIO1–10, ADC2: GPIO11–20）.
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- **DAC:** **None.**（注意：S3 无 DAC！）
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- **Touch:** 14 capacitive touch channels.
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- **USB:** Native USB OTG (GPIO19/20) + USB Serial/JTAG（双 USB 控制器）.
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- **Hardware PWM:** LEDC 8ch and MCPWM ×2.
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- **UART:** 3 controllers.
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- **I2C:** 2 controllers.
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- **SPI:** 4 controllers.
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- **I2S:** 2 controllers.
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- **CAN (TWAI):** 2 controllers.
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- **LCD Interface:** Supports RGB, 8080, and I80 interfaces.
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- **DVP Camera:** 8–16 bit.
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## 4. Hardware Safety & Constraints
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- **ADC2/WiFi Conflict:** ADC2 readings are invalid when Wi-Fi is active. Use ADC1 (GPIO1–10).
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- **Flash Pins:** GPIO26–32.
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- **Strapping Pins:** 0, 3, 45, 46.
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- **Octal PSRAM:** May reserve GPIO33–37（SPIIO4–SPIIO7, SPIDQS）. S3R8/S3R8V 模组这些引脚不可用。
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- **JTAG:** GPIO39–42，不与 Strapping 冲突。
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- **供电:** 2.7–3.6V, 推荐 3.3V, 纹波 <75mVpp.
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- **峰值电流:** ~500 mA (WiFi TX).
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- **Deep-sleep:** ~7 µA.
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- **工作温度:** −40°C ~ +85°C.
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- **封装:** QFN56 (7×7mm).
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## 5. 与 ESP32/S2 的关键差异
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- 核心数：ESP32=双核, ESP32-S2=单核, ESP32-S3=双核
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- 蓝牙：ESP32=BR/EDR+BLE, ESP32-S2=❌, ESP32-S3=BLE 5.0
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- USB OTG：ESP32=❌, ESP32-S2=✅, ESP32-S3=✅
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- USB Serial/JTAG：ESP32=❌, ESP32-S2=❌, ESP32-S3=✅
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- AI 加速：ESP32=❌, ESP32-S2=❌, ESP32-S3=✅
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- Octal PSRAM：ESP32=❌, ESP32-S2=❌, ESP32-S3=✅
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- DAC：ESP32=✅, ESP32-S2=✅, ESP32-S3=❌
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- GPIO：ESP32=34, ESP32-S2=43, ESP32-S3=45
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