Leaf Maple Mini ARM Board

Technical Specifications

• MCU: STM32F103RCBT6, a 32-bit ARM Cortex M3 microprocessor
• Clock Speed: 72 MHz
• 128 KB Flash and 20 KB SRAM
• 34 digital I/ pins (GPIOs)
• 12 PWM pins at 16 bit resolution
• 9 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
• 1 advanced and 3 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 μA)
• Operating Voltage: 3.3 V
• Input Voltage (recommended): 3 V — 12V
• for more data and wiki to use here