PJRC · NXP i.MX RT
Teensy 4.1
A Teensy 4.0 with more of everything: 8 MB flash, microSD, Ethernet-ready, USB host and room for extra PSRAM.
No wireless3.3 V logicBreadboard
Typical price
$31.50
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Specifications
| Maker | PJRC |
|---|---|
| Chip | NXP i.MX RT1062 |
| CPU | Arm Cortex-M7 |
| Clock speed | 600 MHz |
| Wi-Fi | None |
| Bluetooth | None |
| Zigbee / Thread radio | No |
| GPIO pins | 55 usable |
| ADC | 18 channels, 12-bit |
| DAC | None |
| Flash | 8 MB |
| RAM | 1 MB |
| Logic level | 3.3 V |
| Power input | 5V USB / VIN |
| Deep sleep (typ.) | ~15 mA |
| Active current (typ.) | ~100 mA |
| Form factor | Breadboard |
| USB | Micro-USB (native) + USB host |
| Programming | Arduino C++ (Teensyduino), CircuitPython |
| Released | 2020 |
Typical values. Sleep current is approximate; whole-board numbers are higher than the bare chip's datasheet figure.
Pros
- microSD slot and Ethernet PHY pads
- 8 MB flash, optional PSRAM
- 55 I/O pins and USB host port
Cons
- No built-in wireless
- Needs extra parts for Ethernet
- Expensive for casual use
Best use cases
- 01Ethernet-connected data loggers
- 02Audio workstations and samplers
- 03High-speed acquisition
- 04Complex real-time systems
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