ESP32-S3-WROOM-1-N8R8

ESP32-S3-WROOM-1-N8R8 is an Espressif Wi-Fi + Bluetooth 5 (LE) module built around the ESP32-S3R8V system-in-package, with 8 MB of quad-SPI flash and 8 MB of octal-SPI PSRAM in a 25.5 x 18 mm SMD footprint with an on-board PCB antenna. Its advantage is memory headroom without an external RAM chip: the octal PSRAM absorbs frame buffers, LVGL display assets and TensorFlow Lite Micro model weights that stall on 2 MB-class modules, while the dual-core Xtensa LX7 at up to 240 MHz keeps Wi-Fi, BLE and application threads on separate cores. Designers gain a drop-in upgrade path — footprint and pinout match the rest of the ESP32-S3-WROOM-1 family, so a board laid out for any N8R2/N16R8 variant accepts this one without re-spin. Selection advice: note the ambient rating is -40 to +65 C on the R8 variants (not the -40 to +85 C of non-R8 modules); Espressif qualifies 85 C operation only with PSRAM ECC enabled and other stated conditions, so confirm your thermal enclosure against the datasheet note before committing to industrial use; the 1U twin (ESP32-S3-WROOM-1U-N8R8) is identical except for the external-antenna connector.