Leaf Maple (leaf labs)

ARM Cortex-M3 microcontroller module with 72MHz PCB design and pinout compatible with Arduino. In addition, the software also provided a compiler that has the look and format of writing that is compatible with the arduino.

Specifications

• MCU: STM32F103RBT6, a 32-bit ARM Cortex M3 microprocessor
• Clock Speed: 72 MHz
• 128 KB Flash and 20 KB SRAM
• 43 digital I/O pins (GPIOs)
• 15 PWM pins at 16 bit resolution
• 15 analog input (ADC) pins at 12-bit resolution
• 2 SPI peripherals
• 2 I2C peripherals
• 7 Channels of Direct Memory Access (DMA) (dma.h)
• 3 USART (serial port) peripherals
• One advanced and three general-purpose timers
• Dedicated USB port for programming and communications
• JTAG
• Nested Vectored Interrupt Controller (NVIC) (including external interrupt on GPIOs)
• Supplies up to 500 mA at 3.3 V, with separate 250 mA digital and analog regulators for low-noise analog performance
• Open source, four layer design
• Support for low power, sleep, and standby modes (<500 br="br"> Operating Voltage: 3.3 V
• Input Voltage (recommended): 4 V — 12 V
• Dimensions: 2.05″ × 2.1″