CPU / main boards

ESP32 MCU Selection Reference

Choose by package, Flash, GPIO, and power; verify against the original page and your own measurements.

CPU / main boards esp32selectionpackageflashgpiopower

01 What this can become

Filter by package and pin count to avoid board rework later.

Flash and PSRAM size affect OTA strategy and buffering.

For low-power designs, check deep sleep current and wake sources.

Confirm that ADC, DAC, touch, and other peripherals meet your needs.

02 Hardware

  • Package: Common QFN and module types with different pin counts.
  • Power: Typically 3.3V, mind peak current draw.
  • Flash: 4MB minimum, some variants include PSRAM.
  • GPIO: Limited count, check the datasheet for pin muxing.
  • Peripherals: SPI, I2C, UART, ADC, DAC, etc.

03 When to pick it

Good as a selection reference. Verify details against the original page and your own testing.

中文

主控 / CPU

ESP32 主控选型参考

按封装、Flash、GPIO 和功耗选型，先看原页和实测。

主控 / CPU esp32selectionpackageflashgpiopower

01 能做成什么

按封装和引脚数筛选，避免选型后改板。

Flash 和 PSRAM 容量影响 OTA 和缓存策略。

低功耗场景优先看 deep sleep 电流和唤醒源。

确认 ADC、DAC、触摸等外设是否够用。

02 硬件

  • 封装: 常见 QFN 和模组，引脚数不同。
  • 供电: 典型 3.3V，注意峰值电流。
  • Flash: 4MB 起步，部分型号带 PSRAM。
  • GPIO: 数量有限，复用需查数据手册。
  • 外设: SPI、I2C、UART、ADC、DAC 等。

03 什么时候选它

适合作为选型参考。细节以原页和实测为准。