PJRC · structured pinout

Teensy 4.1 pinout

Name: Teensy 4.1 pinout with per-pin electrical limits
Creator: Xirkit

All 80 pins of the Teensy 4.1, each mapped to the MIMXRT1062DVJ6B pad it routes to, with its functions and — for 55 pins — the electrical limits from the chip datasheet. Every number cites its page and table.

80 pins documented55 with electrical limits3 power in8 ground5 power out18 analog37 gpio3 control2 usb4 othercomplete pinout

Pin table

Teensy 4.1 pins, functions and electrical limits

Markdown · JSON

VIH/VIL: input thresholds · VOH/VOL: output levels · IOH/IOL: output current. Values apply to the chip pad each pin routes to, under the conditions cited in the source.
Pin	Position	Kind	Chip pad	Functions	VIH	VIL	VOH	VOL	IOH	IOL	5 V tolerant	Abs max	Source
VIN	header_top · T1	power in		power_in									p.21
GND	header_top · T2	ground		ground
3.3V	header_top · T3	power out		power_out									p.14
23	header_top · T4	analog	GPIO_AD_B1_09	D23, interrupt, A9 (12-bit ADC, 0–3.3 V), PWM (FlexPWM4 Module1), CRX1, MCLK1, CAN1, GPIO1.IO[25]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
22	header_top · T5	analog	GPIO_AD_B1_08	D22, interrupt, A8 (12-bit ADC, 0–3.3 V), PWM (FlexPWM4 Module0), CTX1, CAN1, GPIO1.IO[24]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
21	header_top · T6	analog	GPIO_AD_B1_11	D21, interrupt, A7 (12-bit ADC, 0–3.3 V), RX5, BCLK1, GPIO1.IO[27]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
20	header_top · T7	analog	GPIO_AD_B1_10	D20, interrupt, A6 (12-bit ADC, 0–3.3 V), TX5, LRCLK1, GPIO1.IO[26]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
19	header_top · T8	analog	GPIO_AD_B1_00	D19, interrupt, A5 (12-bit ADC, 0–3.3 V), PWM (QuadTimer3 Module0), SCL, GPIO1.IO[16]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
18	header_top · T9	analog	GPIO_AD_B1_01	D18, interrupt, A4 (12-bit ADC, 0–3.3 V), PWM (QuadTimer3 Module1), SDA, GPIO1.IO[17]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
17	header_top · T10	analog	GPIO_AD_B1_06	D17, interrupt, A3 (12-bit ADC, 0–3.3 V), TX4, SDA1, GPIO1.IO[22]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
16	header_top · T11	analog	GPIO_AD_B1_07	D16, interrupt, A2 (12-bit ADC, 0–3.3 V), RX4, SCL1, GPIO1.IO[23]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
15	header_top · T12	analog	GPIO_AD_B1_03	D15, interrupt, A1 (12-bit ADC, 0–3.3 V), PWM (QuadTimer3 Module3), RX3, S/PDIF IN, GPIO1.IO[19]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
14	header_top · T13	analog	GPIO_AD_B1_02	D14, interrupt, A0 (12-bit ADC, 0–3.3 V), PWM (QuadTimer3 Module2), TX3, S/PDIF OUT, GPIO1.IO[18]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
13	header_top · T14	gpio	GPIO_B0_03	D13, interrupt, PWM (QuadTimer2 Module0), SCK, LED_BUILTIN (orange), GPIO2.IO[3]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
GND	header_top · T15	ground		ground
41	header_top · T16	analog	GPIO_AD_B1_05	D41, interrupt, A17 (12-bit ADC, 0–3.3 V), GPIO1.IO[21]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
40	header_top · T17	analog	GPIO_AD_B1_04	D40, interrupt, A16 (12-bit ADC, 0–3.3 V), GPIO1.IO[20]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
39	header_top · T18	analog	GPIO_AD_B1_13	D39, interrupt, A15 (12-bit ADC, 0–3.3 V), MISO1, OUT1A, GPIO1.IO[29]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
38	header_top · T19	analog	GPIO_AD_B1_12	D38, interrupt, A14 (12-bit ADC, 0–3.3 V), CS1, IN1, GPIO1.IO[28]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
37	header_top · T20	gpio	GPIO_B1_03	D37, interrupt, PWM (FlexPWM2 Module3), CS, GPIO2.IO[19]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
36	header_top · T21	gpio	GPIO_B1_02	D36, interrupt, PWM (FlexPWM2 Module3), CS, GPIO2.IO[18]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
35	header_top · T22	gpio	GPIO_B1_12	D35, interrupt, TX8, GPIO2.IO[28]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
34	header_top · T23	gpio	GPIO_B1_13	D34, interrupt, RX8, GPIO2.IO[29]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
33	header_top · T24	gpio	GPIO_EMC_07	D33, interrupt, PWM (FlexPWM2 Module0), MCLK2, GPIO4.IO[7]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
GND	header_bottom · B1	ground		ground
0	header_bottom · B2	gpio	GPIO_AD_B0_03	D0, interrupt, PWM (FlexPWM1 Module1), RX1, CS1, CRX2, CAN2, GPIO1.IO[3]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
1	header_bottom · B3	gpio	GPIO_AD_B0_02	D1, interrupt, PWM (FlexPWM1 Module0), TX1, MISO1, CTX2, CAN2, GPIO1.IO[2]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
2	header_bottom · B4	gpio	GPIO_EMC_04	D2, interrupt, PWM (FlexPWM4 Module2), OUT2, GPIO4.IO[4]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
3	header_bottom · B5	gpio	GPIO_EMC_05	D3, interrupt, PWM (FlexPWM4 Module2), LRCLK2, GPIO4.IO[5]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
4	header_bottom · B6	gpio	GPIO_EMC_06	D4, interrupt, PWM (FlexPWM2 Module0), BCLK2, GPIO4.IO[6]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
5	header_bottom · B7	gpio	GPIO_EMC_08	D5, interrupt, PWM (FlexPWM2 Module1), IN2, GPIO4.IO[8]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
6	header_bottom · B8	gpio	GPIO_B0_10	D6, interrupt, PWM (FlexPWM2 Module2), OUT1D, GPIO2.IO[10]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
7	header_bottom · B9	gpio	GPIO_B1_01	D7, interrupt, PWM (FlexPWM1 Module3), RX2, OUT1A, GPIO2.IO[17]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
8	header_bottom · B10	gpio	GPIO_B1_00	D8, interrupt, PWM (FlexPWM1 Module3), TX2, IN1, GPIO2.IO[16]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
9	header_bottom · B11	gpio	GPIO_B0_11	D9, interrupt, PWM (FlexPWM2 Module2), OUT1C, GPIO2.IO[11]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
10	header_bottom · B12	gpio	GPIO_B0_00	D10, interrupt, PWM (QuadTimer1 Module0), CS, MQSR, GPIO2.IO[0]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
11	header_bottom · B13	gpio	GPIO_B0_02	D11, interrupt, PWM (QuadTimer1 Module2), MOSI, CTX1, GPIO2.IO[2]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
12	header_bottom · B14	gpio	GPIO_B0_01	D12, interrupt, PWM (QuadTimer1 Module1), MISO, MQSL, GPIO2.IO[1]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
3.3V	header_bottom · B15	power out		power_out									p.14
24	header_bottom · B16	analog	GPIO_AD_B0_12	D24, interrupt, A10 (12-bit ADC, 0–3.3 V), PWM (FlexPWM1 Module2), TX6, SCL2, GPIO1.IO[12]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
25	header_bottom · B17	analog	GPIO_AD_B0_13	D25, interrupt, A11 (12-bit ADC, 0–3.3 V), PWM (FlexPWM1 Module3), RX6, SDA2, GPIO1.IO[13]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
26	header_bottom · B18	analog	GPIO_AD_B1_14	D26, interrupt, A12 (12-bit ADC, 0–3.3 V), MOSI1, GPIO1.IO[30]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
27	header_bottom · B19	analog	GPIO_AD_B1_15	D27, interrupt, A13 (12-bit ADC, 0–3.3 V), SCK1, GPIO1.IO[31]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
28	header_bottom · B20	gpio	GPIO_EMC_32	D28, interrupt, PWM (FlexPWM3 Module1), RX7, GPIO3.IO[18]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
29	header_bottom · B21	gpio	GPIO_EMC_31	D29, interrupt, PWM (FlexPWM3 Module1), TX7, GPIO4.IO[31]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
30	header_bottom · B22	gpio	GPIO_EMC_37	D30, interrupt, CRX3, CAN3 (CAN FD), GPIO3.IO[23]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
31	header_bottom · B23	gpio	GPIO_EMC_36	D31, interrupt, CTX3, CAN3 (CAN FD), GPIO3.IO[22]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
32	header_bottom · B24	gpio	GPIO_B0_12	D32, interrupt, OUT1B, GPIO2.IO[12]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
42	microsd_socket · SD1	gpio	GPIO_SD_B0_03	D42, interrupt, PWM (FlexPWM1 Module1), DAT1, MISO2, GPIO3.IO[15]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
43	microsd_socket · SD2	gpio	GPIO_SD_B0_02	D43, interrupt, PWM (FlexPWM1 Module1), DAT0, MOSI2, GPIO3.IO[14]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
44	microsd_socket · SD3	gpio	GPIO_SD_B0_01	D44, interrupt, PWM (FlexPWM1 Module0), CLK, CS2, SDA1, GPIO3.IO[13]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
45	microsd_socket · SD4	gpio	GPIO_SD_B0_00	D45, interrupt, PWM (FlexPWM1 Module0), CMD, SCK2, SCL1, GPIO3.IO[12]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
46	microsd_socket · SD5	gpio	GPIO_SD_B0_05	D46, interrupt, PWM (FlexPWM1 Module2), DAT3, RX5, GPIO3.IO[17]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
47	microsd_socket · SD6	gpio	GPIO_SD_B0_04	D47, interrupt, PWM (FlexPWM1 Module2), DAT2, TX5, GPIO3.IO[16]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
48	bottom_smt_pads · Q1	gpio	GPIO_EMC_24	D48, interrupt, CS0, RX8, GPIO4.IO[24]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
49	bottom_smt_pads · Q2	gpio	GPIO_EMC_27	D49, interrupt, D1, SCK2, GPIO4.IO[27]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
50	bottom_smt_pads · Q3	gpio	GPIO_EMC_28	D50, interrupt, D2, MOSI2, GPIO4.IO[28]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
51	bottom_smt_pads · Q4	gpio	GPIO_EMC_22	D51, interrupt, PWM, CS1, SCL1, GPIO4.IO[22]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
52	bottom_smt_pads · Q5	gpio	GPIO_EMC_26	D52, interrupt, D0, RX1, GPIO4.IO[26]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
53	bottom_smt_pads · Q6	gpio	GPIO_EMC_25	D53, interrupt, CLK, TX1, GPIO4.IO[25]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
54	bottom_smt_pads · Q7	gpio	GPIO_EMC_29	D54, interrupt, PWM, D3, MISO2, GPIO4.IO[29]	2.31–3.3 V	0–0.99 V	≥ 3.15 V	≤ 0.15 V	≤ 4 mA	4 mA typ	no	≤ 3.3 V	p.7
On/Off	inner_power_row · ONOFF	control	ONOFF	On/Off pushbutton (hold 4 s = off, 0.5 s = on), ONOFF
Program	inner_power_row · PROGRAM	control		Program (bootloader) button input
GND	inner_power_row · GND_I	ground		ground
3.3V	inner_power_row · 3V3_I	power out		power_out									p.14
VBAT	inner_power_row · VBAT	power in		power_in									p.14
USB Host +5V	usb_host_header · UH_5V	power out		power_out
USB Host D−	usb_host_header · UH_DM	usb		USB host D−
USB Host D+	usb_host_header · UH_DP	usb		USB host D+
GND	usb_host_header · UH_GND1	ground		ground
GND	usb_host_header · UH_GND2	ground		ground
Ethernet RX+	ethernet_header · ETH_RXP	other		Ethernet RX+
Ethernet RX−	ethernet_header · ETH_RXN	other		Ethernet RX−
Ethernet LED	ethernet_header · ETH_LED	control		Ethernet link LED
GND	ethernet_header · ETH_GND	ground		ground
Ethernet TX−	ethernet_header · ETH_TXN	other		Ethernet TX−
Ethernet TX+	ethernet_header · ETH_TXP	other		Ethernet TX+
VUSB	bottom_pads · VUSB	power in		power_in									p.14
3.3V	bottom_smt_pads · Q_3V3_1	power out		power_out									p.14
GND	bottom_smt_pads · Q_GND	ground		ground

Answers from the record

Teensy 4.1 pinout FAQ

What microcontroller does the Teensy 4.1 use?

The Teensy 4.1 is built around the MIMXRT1062DVJ6B, alongside W25Q64JV-DTR (8 MB), DP83825I, GD32E230F8 (after June 2022), TLV75533P (after March 2023; earlier TLV75733P / NCV8186AMN330TAG).

How many GPIO pins does the Teensy 4.1 have?

55 GPIO pins are exposed. Xirkit documents 80 board pins, 55 of them with pin-level electrical limits.

Are the Teensy 4.1 I/O pins 5 V tolerant?

No. The I/O pins are not 5 V tolerant — they run at 3.3 V logic; use a level shifter for 5 V signals. Input-high threshold: 2.31–3.3 V.

How much current can a Teensy 4.1 GPIO pin source?

Documented output-high current per pin: ≤ 4 mA. Values are traced to the chip datasheet; see the pinout table for per-pin limits and conditions.

What voltage powers the Teensy 4.1?

Supply range 3–5.5 V. Power inputs: VIN (3.6–5.5 V), VBAT, VUSB.

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