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ESP32-C6-WROOM-1U-N4

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Espressif Systems RF and Wireless, 37-SMD Module. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ESP32-C6-WROOM-1U-N4

Espressif Systems · RF and Wireless · 37-SMD Module

ESP32-C6-WROOM-1U-N4 from Espressif Systems, in a 37-SMD Module. 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 connection for the module.
2 3V3 power_in Module power supply input; the datasheet gives a recommended operating voltage of 3.0 to 3.6 V (typical 3.3 V).
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; the pin is also an SDIO sampling-edge strapping pin (MTMS).
5 IO5 bidirectional GPIO5 with alternate functions MTDI, LP_GPIO5, LP_UART_TXD, ADC1_CH5 and FSPIWP; the pin is also an SDIO sampling-edge strapping pin (MTDI).
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, which is also a boot-mode and ROM-message strapping pin.
11 IO10 bidirectional GPIO10 general-purpose I/O.
12 IO11 bidirectional GPIO11 general-purpose I/O.
13 IO12 bidirectional GPIO12 with alternate function USB_D- (USB Serial/JTAG).
14 IO13 bidirectional GPIO13 with alternate function USB_D+ (USB Serial/JTAG).
15 IO9 bidirectional GPIO9, which is also a boot-mode strapping pin (weak pull-up by default).
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; no internal connection is specified for this pin.
23 IO15 bidirectional GPIO15, which is also the JTAG signal-source strapping pin (no internal pull resistors; must be driven by an external circuit that is not high-impedance).
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 connection for the module.
29 EPAD power_in Exposed thermal pad connected to ground; soldering it to the base-board ground is optional and improves thermal performance.

Key specifications

Parameter Value
Manufacturer Espressif Systems
Package 37-SMD Module
Category RF and Wireless
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 3 3.3 3.6 V 26
Power supply voltage VDD33 -0.3 3.6 V 26
Storage temperature TSTORE -40 105 °C 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
High-level input current IIH 50 nA 26
Low-level input current IIL 50 nA 26
Chip reset voltage VIL_nRST -0.3 V CHIP_PU voltage is within the specified range 27
Power supply voltage (3.3 V) VCC 2.7 3.3 3.6 V Flash, 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 29
Block erase time (32 KB) TBE1 0.2 2 s 29
Block erase time (64 KB) TBE2 0.3 3 s 29
Chip erase time TCE 20 60 s Chip erase time (32 Mb) 29
RF transmit power range (Bluetooth LE) -16 19 dBm Bluetooth LE RF transmit power range 33
Sensitivity -98 dBm Bluetooth LE 1 Mbps, @30.8% PER 34
Maximum received signal 8 dBm Bluetooth LE 1 Mbps, @30.8% PER 34
Sensitivity -95 dBm Bluetooth LE 2 Mbps, @30.8% PER 35
Maximum received signal 8 dBm Bluetooth LE 2 Mbps, @30.8% PER 35
Sensitivity -105.5 dBm Bluetooth LE 125 Kbps, @30.8% PER 36
Maximum received signal 8 dBm Bluetooth LE 125 Kbps, @30.8% PER 36
Sensitivity -101.5 dBm Bluetooth LE 500 Kbps, @30.8% PER 36
RF transmit power range (802.15.4) -16 19 dBm 802.15.4 250 Kbps 37
Sensitivity -104 dBm 802.15.4 250 Kbps, @1% PER 37
Maximum received signal 8 dBm 802.15.4 250 Kbps, @1% PER 37

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-1U-N4
  • Footprint: PCM_Espressif:ESP32-C6-WROOM-1U
  • 3D model: 37-SMD Module (KiCad packages3D, STEP)
  • 3D model files: esp32-c6-wroom-1u-n4-etched.step / esp32-c6-wroom-1u-n4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp32-c6-wroom-1u-n4.step / esp32-c6-wroom-1u-n4.glb are the bare package body.

Provenance

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

  • Datasheet: Espressif Systems 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