| Pin | Symbol | Type | Function (EN) |
|---|---|---|---|
| 1 | GND | GND | Ground Reference Pin (GND) |
| 2 | 3V3 | Power | Power Supply Input (3V3 — 3.3V / 5.0V Standard Logic) |
| 3 | EN | I | System Enable & Hardware Reset (EN) |
| 4 | IO4 | I/O | Multiplexed I/O & Peripheral Pin IO4 (General) |
| 5 | IO5 | I/O | Multiplexed I/O & Peripheral Pin IO5 (General) |
| 6 | IO6 | I/O | Multiplexed I/O & Peripheral Pin IO6 (General) |
| 7 | IO7 | I/O | Multiplexed I/O & Peripheral Pin IO7 (General) |
| 8 | IO15 | I/O | Multiplexed I/O & Peripheral Pin IO15 (General) |
| 9 | IO16 | I/O | Multiplexed I/O & Peripheral Pin IO16 (General) |
| 10 | IO17 | I/O | Multiplexed I/O & Peripheral Pin IO17 (General) |
| 11 | IO18 | I/O | Multiplexed I/O & Peripheral Pin IO18 (General) |
| 12 | IO8 | I/O | Multiplexed I/O & Peripheral Pin IO8 (General) |
| 13 | IO19 | I/O | Multiplexed I/O & Peripheral Pin IO19 (General) |
| 14 | IO20 | I/O | Multiplexed I/O & Peripheral Pin IO20 (General) |
| 15 | IO3 | I/O | Multiplexed I/O & Peripheral Pin IO3 (General) |
| 16 | IO46 | I/O | Multiplexed I/O & Peripheral Pin IO46 (General) |
| 17 | IO9 | I/O | Multiplexed I/O & Peripheral Pin IO9 (General) |
| 18 | IO10 | I/O | Multiplexed I/O & Peripheral Pin IO10 (General) |
| 19 | IO11 | I/O | Multiplexed I/O & Peripheral Pin IO11 (General) |
| 20 | IO12 | I/O | Multiplexed I/O & Peripheral Pin IO12 (General) |
| 21 | IO13 | I/O | Multiplexed I/O & Peripheral Pin IO13 (General) |
| 22 | IO14 | I/O | Multiplexed I/O & Peripheral Pin IO14 (General) |
| 23 | IO21 | I/O | Multiplexed I/O & Peripheral Pin IO21 (General) |
| 24 | IO33 | I/O | Multiplexed I/O & Peripheral Pin IO33 (General) |
| 25 | IO34 | I | Input-Only Pin IO34 (General) |
| 26 | IO45 | I/O | Multiplexed I/O & Peripheral Pin IO45 (General) |
| 27 | IO0 | I/O | Multiplexed I/O & Peripheral Pin IO0 (General) |
| 28 | IO35 | I | Input-Only Pin IO35 (General) |
| 29 | IO36 | I | Input-Only Pin IO36 (General) |
| 30 | IO37 | I | Input-Only Pin IO37 (General) |
| 31 | IO38 | I | Input-Only Pin IO38 (General) |
| 32 | IO39 | I | Input-Only Pin IO39 (General) |
| 33 | IO40 | I/O | Multiplexed I/O & Peripheral Pin IO40 (General) |
| 34 | IO41 | I/O | Multiplexed I/O & Peripheral Pin IO41 (General) |
| 35 | IO42 | I/O | Multiplexed I/O & Peripheral Pin IO42 (General) |
| 36 | RXD0 | I/O | Multiplexed I/O & Peripheral Pin RXD0 (UART) |
| 37 | TXD0 | I/O | Multiplexed I/O & Peripheral Pin TXD0 (UART) |
| 38 | IO2 | I/O | Multiplexed I/O & Peripheral Pin IO2 (General) |
| 39 | P39 | I/O | Multiplexed I/O & Peripheral Pin P39 (General) |
| 40 | P40 | I/O | Multiplexed I/O & Peripheral Pin P40 (General) |
| 41 | P41 | I/O | Multiplexed I/O & Peripheral Pin P41 (General) |
| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit BULETM-SMD_ESPRESSIF_ESP32-S2-SOLO | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Manufactured by Semiconductor, the C2922575 is housed in a BULETM-SMD_ESPRESSIF_ESP32-S2-SOLO package with 41 pins and a 1.27 mm lead pitch. Key pins include: 1 (GND: Ground Reference Pin (GND)), 2 (3V3: Power Supply Input (3V3 — 3.3V / 5.0V Standard Logic)), 3 (EN: System Enable & Hardware Reset (EN)), 4 (IO4: Multiplexed I/O & Peripheral Pin IO4 (General)), 5 (IO5: Multiplexed I/O & Peripheral Pin IO5 (General)), 6 (IO6: Multiplexed I/O & Peripheral Pin IO6 (General)).
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), C2922575 (BULETM-SMD_ESPRESSIF_ESP32-S2-SOLO) has a nominal body envelope of 18.00 × 25.50 mm, pitch e = 1.27 mm, and 49 copper pads plus a central exposed thermal pad (EPAD) of 3.70 × 3.70 mm with a 60% IPC-7525 windowed solder paste grid.
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for C2922575 (Semiconductor, BULETM-SMD_ESPRESSIF_ESP32-S2-SOLO) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 2 | 3V3 | Power_In | Primary positive power supply input (3V3) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |
| 3 | EN | Digital_IO | Chip enable and power-on reset control input (EN): High enables the SoC; Low powers down the chip into reset. |
| 4 | IO4 | Digital_IO | Signal terminal IO4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO4. Supported peripheral buses: General. |
| 5 | IO5 | Digital_IO | Signal terminal IO5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO5. Supported peripheral buses: General. |
| 6 | IO6 | Digital_IO | Signal terminal IO6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO6. Supported peripheral buses: General. |
| 7 | IO7 | Digital_IO | Signal terminal IO7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO7. Supported peripheral buses: General. |
| 8 | IO15 | Digital_IO | Signal terminal IO15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO15. Supported peripheral buses: General. |
| 9 | IO16 | Digital_IO | Signal terminal IO16 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO16. Supported peripheral buses: General. |
| 10 | IO17 | Digital_IO | Signal terminal IO17 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO17. Supported peripheral buses: General. |
| 11 | IO18 | Digital_IO | Signal terminal IO18 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO18. Supported peripheral buses: General. |
| 12 | IO8 | Digital_IO | Signal terminal IO8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO8. Supported peripheral buses: General. |
| 13 | IO19 | Digital_IO | Signal terminal IO19 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO19. Supported peripheral buses: General. |
| 14 | IO20 | Digital_IO | Signal terminal IO20 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO20. Supported peripheral buses: General. |
| 15 | IO3 | Digital_IO | Signal terminal IO3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO3. Supported peripheral buses: General. |
| 16 | IO46 | Digital_IO | Signal terminal IO46 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO46. Supported peripheral buses: General. |
| 17 | IO9 | Digital_IO | Signal terminal IO9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO9. Supported peripheral buses: General. |
| 18 | IO10 | Digital_IO | Signal terminal IO10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO10. Supported peripheral buses: General. |
| 19 | IO11 | Digital_IO | Signal terminal IO11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO11. Supported peripheral buses: General. |
| 20 | IO12 | Digital_IO | Signal terminal IO12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO12. Supported peripheral buses: General. |
| 21 | IO13 | Digital_IO | Signal terminal IO13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO13. Supported peripheral buses: General. |
| 22 | IO14 | Digital_IO | Signal terminal IO14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO14. Supported peripheral buses: General. |
| 23 | IO21 | Digital_IO | Signal terminal IO21 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO21. Supported peripheral buses: General. |
| 24 | IO33 | Digital_IO | Signal terminal IO33 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO33. Supported peripheral buses: General. |
| 25 | IO34 | Digital_IO | Signal terminal IO34 (I, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO34. Supported peripheral buses: General. |
| 26 | IO45 | Digital_IO | Signal terminal IO45 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO45. Supported peripheral buses: General. |
| 27 | IO0 | Digital_IO | Signal terminal IO0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO0. Supported peripheral buses: General. |
| 28 | IO35 | Digital_IO | Signal terminal IO35 (I, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO35. Supported peripheral buses: General. |
| 29 | IO36 | Digital_IO | Signal terminal IO36 (I, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO36. Supported peripheral buses: General. |
| 30 | IO37 | Digital_IO | Signal terminal IO37 (I, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO37. Supported peripheral buses: General. |
| 31 | IO38 | Digital_IO | Signal terminal IO38 (I, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO38. Supported peripheral buses: General. |
| 32 | IO39 | Digital_IO | Signal terminal IO39 (I, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO39. Supported peripheral buses: General. |
| 33 | IO40 | Digital_IO | Signal terminal IO40 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO40. Supported peripheral buses: General. |
| 34 | IO41 | Digital_IO | Signal terminal IO41 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO41. Supported peripheral buses: General. |
| 35 | IO42 | Digital_IO | Signal terminal IO42 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO42. Supported peripheral buses: General. |
| 36 | RXD0 | Digital_IO | Signal terminal RXD0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RXD0. Supported peripheral buses: UART. |
| 37 | TXD0 | Digital_IO | Signal terminal TXD0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: TXD0. Supported peripheral buses: UART. |
| 38 | IO2 | Digital_IO | Signal terminal IO2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO2. Supported peripheral buses: General. |
| 39 | P39 | Digital_IO | Signal terminal P39 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: P39. Supported peripheral buses: General. |
| 40 | P40 | Digital_IO | Signal terminal P40 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: P40. Supported peripheral buses: General. |
| 41 | P41 | Digital_IO | Signal terminal P41 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: P41. Supported peripheral buses: General. |