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SparkFun Teensy 4.1 DEV-16771 is a development board that features an ARM® Cortex®-M7 processor at 600MHz. This 4.1 board is of the same size and shape as the Teensy 3.6 (2.4″ by 0.7″). The Teensy 4.1 development board provides greater I/O capability, including an ethernet PHY, SD card socket, and USB host port. The 4.1 board includes an NXP iMXRT1062 chip, four times larger flash memory than the 4.0, and two new locations to optionally add more memory. This development board comes with 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 turned back on by a brief button press.
The ARM Cortex-M7 brings many powerful CPU features to a true real-time microcontroller platform. This Cortex-M7 is a dual-issue superscalar processor, meaning the M7 can execute two instructions per clock cycle, at 600MHz. The Cortex-M7 processor is the first ARM microcontroller to use branch prediction. This Teensy 4.1’s Cortex-M7 processor includes a Floating Point Unit (FPU) which supports both 64-bit “double” and 32-bit “float”.
