Teensy 4.0

The Teensy 4.0 is the fastest microcontroller development board available, featuring an ARM Cortex-M7 processor running at 600MHz. Built around the NXP iMXRT1062 chip, it delivers exceptional performance in the compact Teensy form factor (35.6 × 17.8mm) while maintaining pin compatibility with Teensy 3.2.

Fully compatible with Arduino IDE through Teensyduino, with support for dynamic clock scaling, real-time clock with battery backup, and hardware floating-point for both 32-bit and 64-bit operations.

Key Features

• 600MHz ARM Cortex-M7 – Dual-issue superscalar processor with branch prediction
• 1024K Flash / 512K RAM – Tightly Coupled Memory for single-cycle access
• Hardware FPU – Accelerates both 32-bit float and 64-bit double calculations
• Dynamic Clock Scaling – Change CPU speed without affecting timing functions
• Real-Time Clock – Battery backup support via VBAT pin
• Power Control – On/Off pin for complete 3.3V shutdown with button hold
• Overclockable – Can run well beyond 600MHz
• USB Device – High-speed USB with multiple device types

Specifications

• Processor – NXP iMXRT1062 (ARM Cortex-M7)
• Clock Speed – 600MHz (overclockable)
• Flash Memory – 1024KB (plus 64KB recovery)
• RAM – 512KB tightly coupled + 512KB general
• Current Draw – ~100mA at 600MHz
• Operating Voltage – 3.3V (5V tolerant digital inputs)
• Dimensions – 35.6 × 17.8mm (same as Teensy 3.2)

Ideal For

• Audio processing and synthesis projects
• High-speed data acquisition
• Real-time signal processing
• USB MIDI and HID devices
• Performance-critical embedded applications

Resources

• PJRC Product Page
• Teensyduino Download