Seeed Studio XIAO ESP32C5

Specifications

Notes

• 8 MB flash + 8 MB PSRAM
• dual-band Wi-Fi 6 (2.4 + 5 GHz): Specifications table states "2.4 GHz & 5 GHz dual-band Wi-Fi 6 and Bluetooth 5 (LE)"
• flash_mb/psram_mb QUOTED: Specifications table Memory row states "8 MB PSRAM & 8 MB Flash"
• dimensions_mm QUOTED: vendor states "As small as a thumb(21x17.8mm)"
• usb.connector=usb-c: vendor states input via "USB Type-C" ("Input voltage (Type-C)" on sibling XIAO docs; package "1 x USB Type-C cable") and "Seeed USB Type-C support USB 3.1"
• U.FL external antenna included (Pin Map "U.FL-R-SMT1 ... UFL antenna"; "External RF antenna included")
• onboard Li-ion charge management + charge LED: Specifications table "Battery Charge Chip SGM40567" and "Onboard LEDs Charge / USER LED"; vendor states "Supports lithium battery charge and discharge management"
• io.gpio_exposed=11 QUOTED: vendor Specifications table states "PWM/Analog Pins" = "11 / 5" (11 PWM-capable pins), matching the Pin Map's D0-D10 = 11 user pads
• io.gpio_free=9 DERIVED, not quoted (SPEC-io-power.md §5.3). Pin Map table breaks out D0-D10 = 11 pads total (quoted: D0=GPIO1, D1=GPIO0, D2=GPIO25, D3=GPIO7, D4=GPIO23, D5=GPIO24, D6=GPIO11, D7=GPIO12, D8=GPIO8, D9=GPIO9, D10=GPIO10). Subtracting esp32-c5's soc.reserved_pins that are exposed -- strapping {2,3,7,25,26,27,28} (2 exposed: GPIO25=D2, GPIO7=D3) and usb_flash_tied {13,14} (0 exposed) -- gives 11 - 2 - 0 = 9. Math not vendor-stated; verify before treating as exact.
• io.power_out OMITTED: the C5 page states no 3V3 output-current figure (no Specifications power row and no "you can draw NmA" narrative).