The Teensy 4.1 is the newest iteration of the astoundingly popular development platform that features an ARM Cortex-M7 processor at 600MHz, with an NXP iMXRT1062 chip, four times larger flash memory than the 4.0, and two new locations to optionally add more memory. The Teensy 4.1 is the same size and shape as the Teensy 3.6 (2.4in by 0.7in) and provides greater I/O capability, including an ethernet PHY, SD card socket, and USB host port.

When running at 600 MHz, the Teensy 4.1 consumes approximately 100mA current and provides support for dynamic clock scaling. Unlike traditional microcontrollers, where changing the clock speed causes wrong baud rates and other issues, Teensy 4.1 hardware and Teensyduinos software support for Arduino timing functions are designed to allow dynamically speed changes. Serial baud rates, audio streaming sample rates, and Arduino functions like delay() and millis(), and Teensyduinos extensions like IntervalTimer and elapsedMillis, continue to work properly while the CPU changes speed. Teensy 4.1 also provides a power shut off feature. By connecting a pushbutton to the On/Off pin, the 3.3V power supply can be completely disabled by holding the button for five seconds and turned back on by a brief button press. If a coin cell is connected to VBAT, Teensy 4.1s RTC also continues to keep track of date & time while the power is off. Teensy 4.1 also can also be overclocked, well beyond 600MHz!

Teensy 4.1s Cortex-M7 processor includes a floating-point unit (FPU) that supports both 64 bit double and 32-bit float. With M4s FPU on Teensy 3.5 & 3.6, and also Atmel SAMD51 chips, only 32-bit float is hardware accelerated. Any use of double, double functions like log(), sin(), cos() means slow software implemented math. Teensy 4.1 executes all of these with FPU hardware.


  1. 10 / 100 Mbit DP83825 PHY (6 pins)
  2. ARM Cortex-M7 at 600MHz
  3. 1024K RAM (512K is tightly coupled)
  4. CAN Bus (1 with CAN FD)
  5. 2 I2S Digital Audio
  6. 1 S/PDIF Digital Audio
  7. 3 SPI, all with 16 word FIFO
  8. 7 Bottom SMT Pad Signals
  9. 8 Serial ports
  10. 32 general-purpose DMA channels
  11. Cryptographic Acceleration
  12. Random Number Generator
  13. RTC for date/time
  14. Programmable FlexIO
  15. Pixel Processing Pipeline
  16. Peripheral cross triggering
  17. microSD Card Socket
  18. Power On/Off management

Package includes:

1 x Teensy 4.1 Development Board







10 / 100 Mbit DP83825 PHY (6 pins)

USB Host

5 Pins with power management

SDIO (4 bit data)

Micro SD Socket

PWM Pins


Analog Inputs


Serial Ports


Flash Memory

8 Mbyte

QSPI Memory

2 chips Plus Program Memory

Breadboard Friendly I/O


Bottom SMT Pad Signals               


SD Card Signals


Total I/O Pins






Brand/Manufacturer Generic
Country Of Origin China
Packer / Importer Address Constflick Technologies Limited, Building No 13 and 14, 3rd Floor, 2nd Main, Siddaiah Road, Bangalore, Karnataka - 560027 India.
MRP Rs. 3302.82 (Inclusive of all Taxes)
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* Product Images are shown for illustrative purposes only and may differ from actual product.

Teensy 4.1 Development Board

  • Product Code: EC-5702
  • Availability: Out Of Stock
  • Rs.2799.00
  • (Excluding 18% GST)