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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206

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ESP8285H16

Espressif Systems · RF Transceiver ICs · QFN-32-EP(5x5)

ESP8285H16 from Espressif Systems, in a QFN-32-EP(5x5). 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	VDDA	power_in	Analog power supply, 2.5 V to 3.6 V.
2	LNA	bidirectional	RF antenna interface with chip output impedance of 39 + j6 Ω; a π-type matching network is suggested to match the antenna.
3	VDD3P3	power_in	Amplifier power supply, 2.5 V to 3.6 V.
4	VDD3P3	power_in	Amplifier power supply, 2.5 V to 3.6 V.
5	VDD_RTC	unconnected	Listed as NC (1.1 V) in Table 2-1.
6	TOUT	input	ADC pin that measures either the VDD3P3 supply or the external TOUT input voltage (0 to 1.0 V), but not both at the same time.
7	CHIP_EN	input	Chip enable: high turns the chip on so it works properly, low turns it off with small current consumed.
8	XPD_DCDC	bidirectional	Deep-sleep wakeup pin that needs to be connected to EXT_RSTB; also GPIO16.
9	MTMS	bidirectional	GPIO14, also used for HSPI_CLK, I2C_SCL, PWM2 and IR TX.
10	MTDI	bidirectional	GPIO12, also used for HSPI_MISO and PWM0.
11	VDDPST	power_in	Digital/IO power supply, 2.7 V to 3.6 V.
12	MTCK	bidirectional	GPIO13, also used for HSPI_MOSI and UART0_CTS.
13	MTDO	bidirectional	GPIO15, also used for boot mode selection, HSPI_CS and UART0_RTS.
14	GPIO2	bidirectional	UART TX during flash programming and used for boot mode selection; also GPIO2 and I2C_SDA.
15	GPIO0	bidirectional	GPIO0, used for boot mode selection, also SPI_CS2.
16	GPIO4	bidirectional	GPIO4, also used for PWM3.
17	VDDPST	power_in	Digital/IO power supply, 2.7 V to 3.6 V.
18	SDIO_DATA_2	bidirectional	Connect to SD_D2 through a 200 Ω series resistor; also GPIO9 and SPIHD.
19	SDIO_DATA_3	bidirectional	Connect to SD_D3 through a 200 Ω series resistor; also GPIO10 and SPIWP.
20	SDIO_CMD	bidirectional	Connect to SD_CMD through a 200 Ω series resistor; used for the embedded flash and not recommended for other uses.
21	SDIO_CLK	bidirectional	Connect to SD_CLK through a 200 Ω series resistor; used for the embedded flash and not recommended for other uses.
22	SDIO_DATA_0	bidirectional	Connect to SD_D0 through a 200 Ω series resistor; used for the embedded flash and not recommended for other uses.
23	SDIO_DATA_1	bidirectional	Connect to SD_D1 through a 200 Ω series resistor; used for the embedded flash and not recommended for other uses.
24	GPIO5	bidirectional	GPIO5, also used for IR Rx.
25	U0RXD	bidirectional	UART Rx during flash programming; also GPIO3.
26	U0TXD	bidirectional	UART TX during flash programming; should not be pulled externally to a low logic level during power-up; also GPIO1 and SPI_CS1.
27	XTAL_OUT	bidirectional	Crystal oscillator output, which can also provide a BT clock input.
28	XTAL_IN	bidirectional	Crystal oscillator input.
29	VDDD	power_in	Analog power supply, 2.5 V to 3.6 V.
30	VDDA	power_in	Analog power supply, 2.5 V to 3.6 V.
31	RES12K	input	Connect in series with a 12 kΩ resistor to ground.
32	EXT_RSTB	input	External reset signal, active at low voltage level.
33	GND	power_in	Ground (exposed pad), shown as pin 33 in the pin layout figure.

Key specifications

Parameter	Value
Manufacturer	Espressif Systems
Package	QFN-32-EP(5x5)
Category	RF And Wireless
Pins	33

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Working Voltage		2.7	3.3	3.6	V		23
Operating Temperature (ESP8285H16 model)		-40		105	°C	ESP8285H16 model, Table 1-1	6
Input low voltage	VIL	-0.3		0.25	V		23
Input high voltage	VIH	0.75		3.6	V		23
Output low voltage	VOL			0.1	V		23
Output high voltage	VOH	0.8			V		23
Maximum I/O current	IMAX			12	mA		23
Maximum Soldering Temperature				260	℃	IPC/JEDEC J-STD-020	23
Electrostatic Discharge (HBM)				2	KV	TAMB = 25 ℃	23
Electrostatic Discharge (CDM)				0.5	KV	TAMB = 25 ℃	23
Input frequency		2412		2483.5	MHz		24
Output power of PA for 72.2 Mbps		13	14	15	dBm		24
Output power of PA for 11b mode		18	19	20	dBm		24
Rise-time of VDD33	t1	10		2000	μs		24
Rise-time of EXT_RSTB	t2	0		2	ms		24
EXT_RSTB goes high after VDD33	t3	0.1			ms		24
Rise-time of CHIP_EN	t4	0		2	ms		24
CHIP_EN goes high after EXT_RSTB	t5	0.1			ms		24

CAD (KiCad official)

Symbol: ESP8285H16
Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm
3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
3D model files: esp8285h16-etched.step / esp8285h16-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp8285h16.step / esp8285h16.glb are the bare package body.

Provenance

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

Datasheet: Espressif Systems datasheet (30 pp, sha256 dce7d19cb67c8ef9, retrieved 2026-10-27, 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