⚖ Comparatif : ESP32-S2 vs ESP32-S3
Comparatif des caractéristiques techniques déclarées : ESP32-S2 et ESP32-S3 (8 caractéristiques). Voir la fiche complète : ESP32-S2 · ESP32-S3.
| Caractéristiques | ESP32-S2 | ESP32-S3 |
|---|---|---|
cpu | single-core Tensilica Xtensa LX7 @ up to 240 MHz (160 MHz default in many configs); no GPU ( ESP32-S2 datasheet URL above). | dual-core Xtensa LX7 @ up to 240 MHz with added vector instructions for NN/signal-processing acceleration (ESP-DSP, ESP-NN, ESP-WHO, ESP-Skainet) ( |
memory | 320 KB internal SRAM, ~1.5 KB low-power SRAM, 448 KB ROM; external SPI flash up to 16 MB (4/8 MB typical); optional quad PSRAM (module-dependent) (ESP32-S2 datasheet: | 512 KB internal SRAM, 384 KB (or 448 KB) ROM, 16 KB low-power SRAM; external flash up to 16 MB incl. high-speed octal SPI flash; PSRAM up to 8 MB octal, with configurable data/instruction cache ( datasheet |
connectivity | Wi-Fi 802.11 b/g/n 2.4 GHz (HT40, ESP-WIFI-MESH). No Bluetooth at all — a defining cut vs the ESP32 ( | Wi-Fi 802.11 b/g/n 2.4 GHz (40 MHz bandwidth) + Bluetooth 5 (LE) with Coded PHY long range and 2 Mbps PHY; no Bluetooth Classic ( |
usb | native USB-OTG (device + host) on GPIO19 (D−)/GPIO20 (D+) — flash/debug over USB without any bridge chip; basis of the QT-Py form factor ( | native USB-OTG (GPIO19/20) plus a USB-Serial/JTAG peripheral — one chip, two USB personalities (datasheet URL above). |
gpio | 43 programmable GPIOs, freely matrix-routed to USB-OTG, LCD (8080/SPI), 8-bit parallel camera interface, SPI, I2S, UART, ADC, DAC, touch (14 capacitive-touch GPIOs) ( - ADC: 12-bit SAR, up to 20 channels (ADC1 GPIO1–14 + ADC2); ADC2 blocked while Wi-Fi runs (datasheet URL above). - DAC: one 8-bit channel (GPIO17) (datasheet URL above). - LEDC PWM, RMT, motor-control PWM, SDIO master (datasheet URL above). | 45 programmable GPIOs; SPI, I2S (audio AEC support), I2C, LEDC PWM, RMT, ADC, UART, SD/MMC host, TWAI (CAN), 14 capacitive-touch GPIOs, ultra-low-power (ULP) FSM coprocessor ( - ADC: two 12-bit SAR units; ADC1 channels on GPIO1–GPIO10 (datasheet URL above). No DAC (unlike ESP32/S2) — use PWM/I2S for analog out. |
logic_level | 3.3 v | 3.3 v |
power | deep sleep in the single-digit µA class with RTC wake; multiple low-power modes (datasheet URL above). > | multiple low-power modes driven by the ULP core; deep sleep in the ~µA class (datasheet power tables). > |
temperature | −40 °C to +105 °C ( | commercial/industrial grades; module datasheets list up to 65 °C ambient for WROOM variants, extended grades exist. > |