PJRC Teensy 4.0 -- 600MHz ARM Cortex-M7 Microcontroller Development Board with USB Host, CAN Bus & Audio
Standard and Lockable Versions

The Teensy 4.0 packs one of the fastest microcontrollers available -- a 600 MHz ARM Cortex-M7 with 2MB flash and 1MB RAM -- into the same compact, breadboard-friendly footprint as the Teensy 3.2 (just 1.4 × 0.7 inches). With 40 I/O pins, hardware 32 & 64-bit floating point, 7 serial ports, 3 CAN Bus, versatile USB device emulation, and full Arduino IDE compatibility, it's the ideal board when you need maximum performance in the smallest possible package.

⚡ Key Features

• 600 MHz ARM Cortex-M7 Processor -- Dual-issue superscalar architecture executes two instructions per clock cycle, delivering performance many times faster than typical 32-bit microcontrollers
• 2MB Flash + 1MB RAM -- Plenty of room for complex programs, with 512K of tightly coupled RAM for single-cycle access at full speed
• Hardware Floating Point (32 & 64-bit) -- Full hardware acceleration for both single and double precision math at native speed
• Compact Teensy 3.2 Footprint -- Same size and breadboard-friendly layout (1.4 × 0.7 in), making it a powerful drop-in upgrade for existing projects
• 40 Digital I/O Pins -- 24 breadboard-friendly, plus 16 bottom SMT pads for USB host, SDIO, and extra I/O
• 31 PWM Outputs & 14 Analog Inputs -- Extensive control and sensing capability
• USB Device (480 Mbit/s) + USB Host -- Main port supports Serial, Keyboard, Mouse, MIDI, Joystick, Audio, and more; host port via bottom SMT pads
• Extensive Communication -- 7 serial ports (all with FIFOs), 3 SPI, 3 I2C, 3 CAN Bus (1 with CAN-FD)
• Digital Audio -- 2× I2S/TDM + 1× S/PDIF in/out + MQS output
• Real-Time Clock (RTC) -- Dedicated 32.768 kHz crystal; add a CR2032 coin cell to maintain time while powered off
• Overclockable to 912 MHz -- Push beyond the rated speed for maximum performance
• 32 DMA Channels -- Hardware-accelerated data transfer for audio, LEDs, displays, and more
• Cryptographic Acceleration & Random Number Generator -- Built-in hardware security features

📐 Specifications

📦 What's in the Box

• 1x Teensy 4.0 Development Board (variant as selected)
• 1x Pinout Reference Card

Header pins, USB cable, and other accessories are not included.

🛒 What You'll Need

• USB Micro-B Cable -- For programming and power (must be a data cable, not charge-only)
• Header Pins (2x 14-pin) -- For breadboard use (soldering required)
• Soldering Iron -- For attaching header pins and optional accessories

🔌 Compatible With

• Arduino IDE (with Teensyduino boards add-on)
• PlatformIO (Windows, Mac, Linux)
• Visual Micro for Visual Studio (Windows)
• CircuitPython (partial hardware support)
• PJRC Audio Shield (Rev D)
• SmartLED Shield v5 for HUB75 RGB LED panels
• Standard solderless breadboards (same footprint as Teensy 3.2)

🎯 Typical Applications

• Multi-channel audio processing and synthesis
• Large-scale addressable LED installations (WS2812B / NeoPixel)
• Custom USB HID devices -- keyboards, MIDI controllers, joysticks, flight sim panels
• CAN Bus automotive and industrial control
• Real-time signal processing and DSP
• Robotics and multi-axis motor control
• DMX lighting control
• Drop-in performance upgrade from Teensy 3.2
• Commercial embedded products (Lockable variant available)

⚠️ Important Notes

• All I/O pins are 3.3V only -- do not apply more than 3.3V to any pin
• Header pins are not pre-soldered -- soldering is required for breadboard use
• The USB host port is accessed via two small SMT pads on the bottom of the board (soldering required) and has no power management -- do not hot-plug USB devices
• SD card access is available via SPI (using a breakout board) or via bottom SMT pads (SDIO) -- there is no built-in SD card socket
• Two variants are available: Standard or Lockable -- check the listing variation before purchasing
• The Lockable variant supports encrypted firmware updates and code security for commercial applications

🏪 About Envistia Mall

Envistia Mall is a US-based electronics retailer specializing in development boards, sensors, modules, and components for makers, engineers, and educators. We ship from the United States with fast handling times. Product documentation and technical support are available at our dedicated support site.

📦 Fast Free US Shipping  |  🔄 Hassle-Free Returns  |  📧 Responsive Customer Support

Visit our eBay Store for compatible Teensy accessories, including header pins, USB cables, Audio Shields, and more. We also carry the Teensy 4.1 with built-in Ethernet and SD card.