Espressif Systems ESP32-S2-SOLO-2 User Manual page 16
2.4ghz wi-fi lot module built around esp32-s2 series of soc, xtensa single-core 32-bit lx7 microprocessor flash up to 16 mb, optional 2 mb psram in chip package 36 gpios, rich set of peripherals on-board pcb antenna
2.4 ghz wi-fi (802.11 b/g/n) and bluetooth 5 (le) module buit around esp32-s3r8v soc, xtensa dual-core 32-bit lx7 microprocessor flash up to 32 mb, psram up to 8 mb 33 gpios, rich set of peripherals on-board pcb antenna (21 pages)
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