What Is It?

Toasty is a humongously-powerful Cortex-M7 ARM-based microcontroller USB development board in a small form-factor with tons of external IO.

Featuring a core clock speed of 480MHz and combining 2MB of flash memory with 1MB of SRAM, for its size, Toasty is one of the most powerful Cortex-M development boards on the planet!

Features

• 480MHz Cortex-M7 ARM microcontroller
• Small form factor: 76.2x25.4mm (3"x1")
• Two user-programmable LEDs
• USB OTG for host/device development
• microSD card socket
• Bootloader and reset buttons
• JTAG accessible via dedicated header
• Breadboard-friendly 0.1" pitch external IO connections

Microcontroller (STM32H743VIT6)

• ARM Cortex-M7 running at 480MHz
• 2MB flash memory and 1MB of SRAM
• 3x 16-bit ADCs, upto 36 channels
• 2x 12-bit DACs
• 2x comparators
• 12x 16-bit timers
• 2x PWM timers
• 1x RNG (random number generator)

Power

Toasty is a 3.3V system and is NOT compatible with other 5V modules or subsystems without using suitable level translators or logic shifters.

• Input voltage of 6V max (via micro-USB or VIN pin)
• 3.3V output-only rail available (max 150mA when USB powered, 1A when VIN powered)

Dimensions

Toasty is 76.2x25.4mm (3"x1") in size and is fully breadboard-compatible with GPIO pins sat on a 2.54mm (0.1") pitch.

Pinout

Toasty features a total of 60 general purpose IO pins, each of which can be multiplexed as part of an additional peripheral.

The full peripheral set available on Toasty is as follows:

• 4x USART, 4x UART, 1x LPUART ports
• 6x SPI, 3x I2S ports
• 4x I2C ports
• 1x USB OTG FS interface
• Ethernet MAC interface
• LCD-TFT interface
• CANbus port
• Random number generator
• Cryptographic accelerator
• 3x 8 to 16bit ADCs over 20 channels
• 2x 12bit DAC channels
• 2x comparators
• 2x operational amplifiers
• Real-time clock

Arduino Compatibility

Toasty sketches can be uploaded via USB from the Arduino IDE via a custom uploader utility. Toasty uses the default STM32 bootloader pre-programmed into every STM32 device - no additional bootloader is required to program Toasty.

Arduino API and low-level peripheral access is provided by the STM32duino core GitHub repo with included Toasty support:

Toasty STM32duino GitHub Repo

What Makes Toasty Special

Toasty enables you to take your projects to the next level with its outrageous performance and a plethora of peripherals and available IO!