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July 23, 2024 22:44
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ESP Table
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| Series | Announcement Date | Main Processor | Clock Freq (up to) | Co-processor | Cache | BT | WiFi | GPIO | SRAM | ROM | Flash encryption | RTC memory | SPI | UART | USB | Touch Sensor | Timers | RMT | | |
|--------- |------------------- |----------------------------- |-------------------- |-------------- |-------- |--------------------- |------------------------- |-------------------------- |-------- |-------- |------------------ |------------ |----- |------ |------------- |-------------- |----------------------- |--------------- | | |
| S2 | 2019, September | Xtensa single-core LX7 | 240 MHz | ULP (RISC-V) | 8/16KB | No | 4 | 43 | 320KB | 128 KB | XTS-AES-128/256 | 16KB | 4 | 2 | USB OTG 1.1 | 14 | 4x 64-bit | 4x TX/RX | | |
| S3 | 2020, December | Xtensa LX7 dual-core | 240 MHz | ULP (RISC-V) | | BLE 5.0 + LE | 4 | 45 | 512 KB | 384KB | | 16KB | | | | | | | | |
| C2 | | RISC-V single-core | 120 MHz | | | BLE 5.0 + LE | | 14 | 272 KB | 576 KB | | | | | | | | | | |
| C3 | 2020, November | RISC-V single-core | 160 MHz | | 16KB | BLE 5.0 + LE | 4 | 22 | 400KB | 384 KB | XTS-AES-128 | 8KB | 3 | 2 | Serial/JTAG | | 2x 54-bit + 1x 52-bit | 2x TX + 2x RX | | |
| C6 | 2021, April | RISC-V single-core | 160 MHz | | | BLE 5.0 + LE | 6 | 30 (QFN40) or 22 (QFN32) | 512KB | 320KB | XTS-AES-128 | | | | | | | | | |
| ESP32 | 2016, September | Xtensa LX6 single/dual-core | 160/240 MHz | ULP | 64KB | BT 4.2 BR/EDR & BLE | 4 | 34 | 520KB | | | 16KB | 4 | 3 | No | 10 | 4x 64b | 8x TX/RX | | |
| ESP8266 | 2014, August | Tensilica L106 | 160MHz | No | | No | 4 (only up to 72.2Mbps) | 17 | 160KB | No | No | 768B | 2 | 2 | No | | 2x 32b (*) | 1x TX 1x RX | |
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