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ESP32-C6-WROOM-1-N4

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ESPRESSIF INC WiFi Modules, SMD-28P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ESP32-C6-WROOM-1-N4

ESPRESSIF INC · WiFi Modules · SMD-28P

ESP32-C6-WROOM-1-N4 from ESPRESSIF INC, in a SMD-28P. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground pin of the module.
2 3V3 power_in Power supply pin; the datasheet's recommended operating range for the module supply (VDD33) is 3.0 V to 3.6 V with a 3.3 V typical value.
3 EN input Chip enable: high turns the chip on and low powers it off, and the pin must not be left floating.
4 IO4 bidirectional GPIO4 with alternate functions MTMS, LP_GPIO4, LP_UART_RXD, ADC1_CH4 and FSPIHD; MTMS is a strapping pin.
5 IO5 bidirectional GPIO5 with alternate functions MTDI, LP_GPIO5, LP_UART_TXD, ADC1_CH5 and FSPIWP; MTDI is a strapping pin.
6 IO6 bidirectional GPIO6 with alternate functions MTCK, LP_GPIO6, LP_I2C_SDA, ADC1_CH6 and FSPICLK.
7 IO7 bidirectional GPIO7 with alternate functions MTDO, LP_GPIO7, LP_I2C_SCL and FSPID.
8 IO0 bidirectional GPIO0 with alternate functions XTAL_32K_P, LP_GPIO0, LP_UART_DTRN and ADC1_CH0.
9 IO1 bidirectional GPIO1 with alternate functions XTAL_32K_N, LP_GPIO1, LP_UART_DSRN and ADC1_CH1.
10 IO8 bidirectional GPIO8; strapping pin used for chip boot mode and ROM message printing control.
11 IO10 bidirectional GPIO10 general-purpose I/O.
12 IO11 bidirectional GPIO11 general-purpose I/O.
13 IO12 bidirectional GPIO12 with USB D- function (USB_D-), as printed in the pin table.
14 IO13 bidirectional GPIO13 with USB D+ function (USB_D+).
15 IO9 bidirectional GPIO9; strapping pin used for chip boot mode selection (default weak pull-up).
16 IO18 bidirectional GPIO18 with alternate functions SDIO_CMD and FSPICS2.
17 IO19 bidirectional GPIO19 with alternate functions SDIO_CLK and FSPICS3.
18 IO20 bidirectional GPIO20 with alternate functions SDIO_DATA0 and FSPICS4.
19 IO21 bidirectional GPIO21 with alternate functions SDIO_DATA1 and FSPICS5.
20 IO22 bidirectional GPIO22 with alternate function SDIO_DATA2.
21 IO23 bidirectional GPIO23 with alternate function SDIO_DATA3.
22 NC unconnected Not connected (NC) pin.
23 IO15 bidirectional GPIO15; strapping pin used for JTAG signal source control.
24 RXD0 bidirectional UART0 receive (U0RXD) with alternate functions GPIO17 and FSPICS1.
25 TXD0 bidirectional UART0 transmit (U0TXD) with alternate functions GPIO16 and FSPICS0.
26 IO3 bidirectional GPIO3 with alternate functions LP_GPIO3, LP_UART_CTSN and ADC1_CH3.
27 IO2 bidirectional GPIO2 with alternate functions LP_GPIO2, LP_UART_RTSN, ADC1_CH2 and FSPIQ.
28 GND power_in Ground pin of the module.
29 EPAD power_in Exposed thermal pad that is ground; soldering it to the base board ground is optional and improves thermal performance, but excess solder paste can degrade adhesion of the other pins.

Key specifications

Parameter Value
Manufacturer ESPRESSIF INC
Package SMD-28P
Category IoT/Communication Modules
Pins 29

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power supply voltage VDD33 -0.3 3.6 V 26
Storage temperature TSTORE -40 105 °C 26
Power supply voltage VDD33 3 3.3 3.6 V 26
Current delivered by external power supply IVDD 0.5 A 26
Operating ambient temperature TA -40 85 °C 85 °C version 26
Low-level input voltage VIL -0.3 V 26
Low-level input current IIL 50 nA 26
High-level input current IIH 50 nA 26
Chip reset voltage VIL_nRST -0.3 V CHIP_PU voltage is within the specified range 27
RF transmit power range -16 19 dBm 802.15.4 Transmitter Characteristics - 250 Kbps 37
Power supply voltage (1.8 V) VCC 1.65 1.8 2 V Power supply voltage (1.8 V) 28
Power supply voltage (3.3 V) VCC 2.7 3.3 3.6 V Power supply voltage (3.3 V) 28
Maximum clock frequency FC 80 MHz 28
Program/erase cycles 100000 cycles 28
Data retention time TRET 20 years 28
Page program time TPP 0.8 5 ms 28
Sector erase time (4 KB) TSE 70 500 ms Sector erase time (4 KB) 29
Block erase time (32 KB) TBE1 0.2 2 s Block erase time (32 KB) 29
Block erase time (64 KB) TBE2 0.3 3 s Block erase time (64 KB) 29
Chip erase time (16 Mb) TCE 7 20 s Chip erase time (16 Mb) 29
Chip erase time (32 Mb) TCE 20 60 s Chip erase time (32 Mb) 29
Chip erase time (64 Mb) TCE 25 100 s Chip erase time (64 Mb) 29
Chip erase time (128 Mb) TCE 60 200 s Chip erase time (128 Mb) 29
Chip erase time (256 Mb) TCE 70 300 s Chip erase time (256 Mb) 29

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin Solder: Sn-Ag-Cu (SAC305) lead-free solder Temperature (°C) 46

CAD (KiCad official)

  • Symbol: ESP32-C6-WROOM-1-N4
  • Footprint: PCM_Espressif:ESP32-C6-WROOM-1
  • 3D model: SMD-28P (KiCad packages3D, STEP)
  • 3D model files: esp32-c6-wroom-1-n4-etched.step / esp32-c6-wroom-1-n4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp32-c6-wroom-1-n4.step / esp32-c6-wroom-1-n4.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: ESPRESSIF INC datasheet (52 pp, sha256 163020762fa6d499, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF