arduino › microcontroller board
pjrc PJRC Teensy 4.1
Teensy 4.0 + onboard Ethernet PHY pads, SD slot, and PSRAM/flash footprints. Pick 4.1 over 4.0 when you need Ethernet or microSD without a shield.
Specifications
- mcu chip
- imxrt1062
- clock mhz
- 600
- flash kb
- 8192
- sram kb
- 1024
- wifi
- no
- wifi band
- none
- bluetooth
- none
- usb
- micro_b
- gpio count
- 55
- analog inputs
- 18
- pwm pins
- 35
- i2c
- yes
- spi
- yes
- uart count
- 8
- operating voltage v
- 3.3
- input voltage range v
- 5
- power pins
- 3v3, vin
- firmware compat
- arduino_ide, platformio
- ai accelerator
- none
- form factor
- teensy
Sources
- SparkFun open product catalog · ingest 2026-05-06
- Adafruit open product catalog · ingest 2026-05-06