Iteadmaple STM32F103RB Leaf Maple

Iteadmaple is a microcontroller board based on Leaf Maple. The Iteadmaple can achieve the maximum 72 MHz, it has 39 digital input/output pins, 16 analog inputs, native full speed USB, 3 USARTs (hardware serial ports), integrated SPI/I2C support, with power jack, and reset button. Iteadmaple is programmable over USB via a provided DFU bootloader, no extra hardware required! Users can also program the onboard program flash via external X-link/X-linkEx JTAG interface. Iteadmaple offers security support for read/write protected addresses, as well as User and Handler processor modes.Iteadmaple can be powered by USB or external power supply.

Features

• 72MHz ARM Cortex M3 core
• 20KB SRAM and 128KB Flash
• 64 channel nested vector interrupt handle
• 7 channels of Direct Memory Access(DMA)
• Wide range external input from and USB supply adaptive
• X-link/X-linkEx full compatible
• Pins map full compatible for Arduino shield

https://github.com/leaflabs/maple

Spec