- | ESP8266 | ESP32 | ESP32-S2 |
---|---|---|---|
release Year | 2014 | 2016 | 2019 |
Microcontroller | Xtensa single-core 32-bit L106 | Xtensa single/dual-core 32-bit LX6 | Xtensa single-core 32-bit LX7 |
Clock Frequency | 80 MHz | 160/240 MHz | 240 MHz |
Co-processor | No | ULP | ULP (RISC-V) |
SRAM | 160 KB | 520 KB | 320 KB |
ROM | No | 448 KB | 128 KB |
RTC Memory | No | 16 KB | 16 KB |
External SPIRAM | Up to 16MB | Up to 16MB | Up to 128MB |
External Flash | No | No | Up to 1G |
Wi-Fi (802.11 b/g/n) | HT20 | HT20 | HT20 |
ESP-MESH | Yes | Yes | Yes |
Bluetooth | No | BT 4.2 BR/EDR & BLE | No |
Ethernet | No | 10/100 Mbps | No |
CAN | No | 2.0 | No |
Time of Flight | No | No | Yes |
GPIO (total) | 16 | 34 | 43 |
Touch Sensors | No | 10 | 14 |
SPI | 2 | 4 | 4 (OSPI) |
I2C | 1 (soft) | 2 | 2 |
I2S | 2 | 2 | 1 |
UART | 2 (1 ½ actually) | 3 | 2 |
ADC | 1 (10-bit) | 18 (12-bit) | 20 (12-bit) |
DAC | No | 2 (8-bit) | 2 (8-bit) |
PWM (soft) | 8 | 16 | 8 |
SDMMC | No | Yes | No |
RMT (remote control) | No | Yes | Yes |
USB OTG | No | No | Yes |
LCD Interface | No | No | Yes |
Camera Interface | No | No | Yes |
Temperature sensor | No | Yes | Yes |
Hall sensor | No | Yes | No |
Security | No | Secure boot Flash encryption 1024-bit OTP | Secure boot Flash encryption 4096-bit OTP |
Crypto | No | AES, SHA-2, RSA, ECC, RNG | AES-128/192/256, SHA-2, RSA, RNG, HMAC, Digital Signature |
Low Power Consumption | 20uA | 10uA deep sleep | Automatic RF power management 5uA in idle mode 24uA at 1% duty cycle |
ESP8266、ESP32 和 ESP32-S2 对比
- shaoziyang
- 帖子: 3917
- 注册时间: 2019年 10月 21日 13:48
ESP8266、ESP32 和 ESP32-S2 对比
来自:https://maker.pro/esp8266/tutorial/a-co ... -the-esp32
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