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Teensy 4.1 Lockable with Copy Protection
The Teensy 4.1 Lockable with Copy Protection is a high-speed microcontroller board for advanced embedded projects, secure products, robotics, data logging, audio, controls, and connected devices. It runs on a 600MHz ARM Cortex-M7 processor and includes large memory, many I/O pins, Ethernet support, USB host support, and a built-in microSD card socket.
This lockable version is made for developers who want to protect finished firmware in production. When properly set up, the board can be locked into secure mode so only encrypted code made with your private key can run.
Why Choose Teensy 4.1 Lockable?
- Fast 600MHz ARM Cortex-M7 processor for demanding projects.
- Lockable version for production code security.
- 8MB flash and 1024K RAM for larger programs and buffers.
- Built-in microSD socket for data logging and file storage.
- 10/100 Ethernet PHY for wired network projects.
- USB host support for selected USB devices.
- 55 total I/O pins with 35 PWM-capable pins.
- Good for robotics, audio, logging, control, and secure products.
What You Can Build
- Secure embedded product prototype
- High-speed robotics controller
- Ethernet-connected sensor system
- MicroSD data logger
- Audio processing project
- USB host device project
- LED and pixel controller
- CAN bus test project
- Motor and motion control system
- Advanced Arduino IDE-compatible project
What’s Included?
- Teensy 4.1 Lockable with Copy Protection board - 1 pc
Note: Headers are not included. USB cable, Ethernet cable, microSD card, sensors, and other accessories are sold separately unless stated in the package.
Technical Specifications
| Product Type | High-performance lockable microcontroller development board |
|---|---|
| Model | Teensy 4.1 Lockable with Copy Protection |
| SKU | DEV-28369 |
| Processor | ARM Cortex-M7 at 600MHz |
| Main Chip | NXP MIMXRT1062DVJ6B |
| Flash Memory | 8MB flash |
| RAM | 1024K RAM, with 512K tightly coupled memory |
| Total I/O Pins | 55 total I/O pins |
| Breadboard-Friendly I/O | 42 pins |
| PWM Pins | 35 PWM pins |
| Analog Inputs | 18 analog input pins |
| Communication | 8 serial ports, 3 SPI ports, 3 I2C ports, and 3 CAN bus ports |
| Audio Support | 2 I2S digital audio ports and 1 S/PDIF digital audio port |
| Storage | Built-in microSD card socket |
| USB | USB device and USB host support |
| Ethernet | 10/100 Mbit Ethernet PHY |
| Security Feature | Lockable copy protection with programmable security fuse |
| Software Support | Arduino IDE with Teensy boards add-on |
| Logic Level | 3.3V logic. Pins are not 5V tolerant. |
| Best For | Secure products, robotics, audio, data logging, Ethernet projects, controls, and high-speed embedded systems |
Copy Protection Notes
This lockable board is best for final products where firmware protection is needed. It allows secure mode to be enabled using a private encryption key.
Locking the board is a serious step. Wrong fuse settings can permanently damage the board. Losing your key can also prevent future programming. For early testing and normal prototyping, use a standard Teensy board first.
Power and Wiring Notes
Teensy 4.1 uses 3.3V logic. Do not connect 5V signals directly to its pins. Using 5V input signals may damage the board.
The board can be powered through USB for basic testing. When using external power through VIN, follow Teensy power guidelines carefully.
Important Notes
- This is the lockable copy protection version.
- Headers are not included.
- Use 3.3V-safe sensors and modules.
- Use a compatible USB cable for programming.
- Install Teensy support in Arduino IDE before uploading code.
- Use the standard Teensy board first for early prototyping.
Recommended Add-ons
- Teensy boards and accessories
- Pins and headers
- Sensors and modules
- MicroSD cards and storage
- USB cables
FAQ
What is Teensy 4.1 Lockable used for?
It is used for high-speed embedded projects and final products that need firmware copy protection.
Is this good for beginners?
This board is best for advanced users. For basic learning, a standard Teensy or Arduino-compatible board is easier to start with.
Does this version have Ethernet?
Yes. This version includes a 10/100 Mbit Ethernet PHY.
Are headers included?
No. Headers are not included.
Are the pins 5V tolerant?
No. The pins use 3.3V logic and are not 5V tolerant.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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