ESP Chips
José Antonio Jiménez Campos edited this page Apr 25, 2024
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| Chip | CPU | Speed | Cores | RAM | Pins | GPIOs | WiFi |
|---|---|---|---|---|---|---|---|
| ESP8266 | Tensilica L106 | 80MHz | 1 | 160KB | 32 | 13 | 802.11n 20MHz |
| ESP32 | Tensilica Xtensa LX6 | 160MHz | 1 / 2 | 520KB | 48 | 30 | 802.11n 40MHz |
| ESP32-S2 | Tensilica Xtensa LX7 | 160MHz | 1 | 320KB | 56 | 39 | 802.11n 40MHz |
| ESP32-S3 | Tensilica Xtensa LX7 | 160MHz | 2 | 512KB | 56 | 41 | 802.11n 40MHz |
| ESP32-C2 | RISC-V | 120MHz | 1 | 272KB | 24 | 17 | 802.11n 40MHz |
| ESP32-C3 | RISC-V | 160MHz | 1 | 400KB | 32 | 18 | 802.11n 40MHz |
| ESP32-C6 | RISC-V | 160MHz | 1 | 512KB | 32 / 40 | 18 / 26 | 802.11ax 40MHz |
Official Espressif Technical Documents
These GPIOs are normally connected in development boards:
| Chip | Boot | UART0 TX | UART0 RX | USB- | USB+ |
|---|---|---|---|---|---|
| ESP8266 | 0 | 1 | 3 | ||
| ESP32 | 0 | 1 | 3 | ||
| ESP32-S2 | 0 | 43 | 44 | 19 | 20 |
| ESP32-S3 | 0 | 43 | 44 | 19 | 20 |
| ESP32-C2 | 9 | 20 | 19 | ||
| ESP32-C3 | 9 | 21 | 20 | 18 | 19 |
| ESP32-C6 | 9 | 16 | 17 | 12 | 13 |
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