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Teensy 4.1 Development Board

Teensy 4.1 Development Board

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  • ARM Cortex-M7 at 600MHz
  • 1024K RAM (512K is tightly coupled)
  • 8 Mbyte Flash (64K reserved for recovery & EEPROM emulation)
  • USB Host Port
  • 2 chips Plus Program Memory
  • 55 Total I/O Pins
  • Cryptographic Acceleration
  • Random Number Generator
  • RTC for date/time
  • Programmable FlexIO
  • Pixel Processing Pipeline
  • Peripheral cross triggering
  • Power On/Off management

Teensy 4.1 Development Board

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 Teensyduino’s software support for Arduino timing functions are designed to allow dynamic speed changes.

Serial baud rates, audio streaming sample rates, and Arduino functions like delay() and millis(), and Teensyduino’s 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 being turned back on by a brief button press.

If a coin cell is connected to VBAT, Teensy 4.1’s 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 4.1’s Cortex-M7 processor includes a floating-point unit (FPU) that supports both 64 bit “double” and 32-bit “float”. With M4’s FPU on Teensy 3.5 & 3.6, and also Atmel SAMD51 chips, the 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.

Pin diagramTeensy 4.1 Development Board


  • Ideal for robotics, automation, and motor control systems.
  • Suitable for audio processing, DSP, and real-time audio manipulation applications.
  • Best for data logging and acquisition systems.
  • Enables IoT devices, web servers, and networked sensors.
  • Suitable for secure communication and data encryption applications.
  • Ideal for image processing, computer vision, and display systems.
  • Provides versatility for interfacing with sensors, actuators, and peripherals.
  • Allows for the development of tailored embedded systems and prototypes.

All about Teensy 4.1 Development Board

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


Dimensions(L x W)

60.96 x 17.78 mm



Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

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1. Can it support 2 mpbs buad rate on USART? 

Yes, the Teensy 4.1's serial ports which support USART (Universal Synchronous/Asynchronous Receiver/Transmitter) can handle baud rates of up to 2 Mbps (megabits per second). The Teensy 4.1 is appropriate for applications that need quick and dependable serial connection because of its high-performance ARM Cortex-M7 processor and adaptable hardware, which enable it to achieve high-speed communication rates.

2. It comes with ethernet shield? 

No, an Ethernet shield is not included with the Teensy 4.1 development board. But it has an Ethernet PHY (Physical Layer) port that enables you to attach an external Ethernet shield or module to use networking features. 

3. What programming language is supported by the Teensy 4.1?

Using the Arduino IDE, C and C++ programming is supported on the Teensy 4.1. Because it works with the Arduino ecosystem, users can incorporate pre-existing libraries and resources into their projects.

4. Can I interface external sensors and devices with the Teensy 4.1?

Yes, you may easily interact with a variety of sensors, actuators, and communication modules for your projects due to the Teensy 4.1's many GPIO pins, PWM pins, analog inputs, and serial ports.

5. Does the Teensy 4.1 support real-time processing and multitasking?

Yes, the Teensy 4.1 is suited for applications needing exact timing and responsiveness because of its potent Cortex-M7 processor and cutting-edge hardware capabilities, which enable it to handle real-time operations and multitasking efficiently.

6. Is the Teensy 4.1 compatible with third-party development tools and IDEs?

Yes, in addition to the Arduino IDE, the Teensy 4.1 is compatible with a number of other third-party development tools and IDEs. Platforms such as PlatformIO and embedXcode enable users to build with flexibility, selecting the development environment of their choice.