ESP32-S3-WROOM-1U
Variant of ESP32-S3-WROOM-1 with an external antenna connector instead of the PCB antenna.
The external-antenna-connector variant of the ESP32-S3-WROOM-1 module family — same SoC and storage variants, RF interface through a connector instead of the PCB antenna. In MCUID’s hardware chain — chip → module → board — this page holds the module facts: variants, module-level pin conditions and board compatibility. Chip capabilities live on the ESP32-S3 chip page; headers, revisions and connectors on the board page.
Start from the board: ESP32-S3-DevKitC-1 — see the first-flash guide for the bring-up path.
What the module decides
- Same variant suffixes (N/R) and the same module-dependent GPIO 35–37 condition as the WROOM-1; the antenna difference affects RF wiring, not GPIO availability.
- Storage variants — the table below lists the official variants with their official source; flash/PSRAM capacity is this module’s fact, not the chip’s.
- Compatible boards — the list below is generated from the same data as the board pages.
Variants
| Variant | Summary | Source |
|---|---|---|
| N8 | 8 MB SPI flash, no PSRAM | DevKitC-1 guide v1.1 |
| N8R2 | 8 MB SPI flash, 2 MB PSRAM | DevKitC-1 guide v1.1 |
| N8R8 | 8 MB quad SPI flash, 8 MB octal SPI PSRAM (interface types per the v1.0 guide ordering table) | DevKitC-1 guide v1.0 |
| N16R8 | 16 MB SPI flash, 8 MB PSRAM | DevKitC-1 guide v1.1 |
Published fields
| Field | Value | Applies to | Status | Source | Notes |
|---|---|---|---|---|---|
gpio.occupied_by_internal_storage | 35, 36, 37 | Condition: variants with Octal SPI flash or PSRAM | verified · cc40 · 2026-11-08 | DevKitC-1 guide v1.1 | Same official restriction scope as WROOM-1, quoted jointly in the guide note. |