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.. _specs:

.. _specs-Technical-Specifications:

================================
Maple's Technical Specifications
================================
	
	* STM32 F103RB: a **32-bit** ARM Cortex M3 microprocessor
	* Clock Speed: **72 MHz**
	* Operating Voltage: 3.3V
	* Input Voltage (recommended): 3.0V-12V
	* 39 Digital I/O Pins (:ref:`GPIO <gpio>`)
	* 16 Analog Input Pins 
	* 12-bit **ADC** resolution (:ref:`ADC <adc>`)
	* 15 **PWM** pins at 16-bit resolution (:ref:`PWM <pwm>`)
	* Dedicated **USB** port for programming and communications (:ref:`USB<usb>`)
	* External **JTAG** interface (:ref:`USB <jtag>`)
	* **128 Flash** and **20KB SRAM**
	* 64 Channel nested vector interrupt handler (including external interrupt on GPIO’s)
	* Integrated **SPI** (:ref:`SPI<spi>`)
	* Integrated **I2C** (:ref:`I2C<i2c>`)
	* 7 Channels of Direct Memory Access (DMA)
	* 3 **USART** divices (:ref:`USART <usart>`)
	* Four 4-channel Timers (:ref:`Timers <timers>`)
	* Supplies up to 800mA @ 3.3v
	* Support for low power and sleep modes (<500uA)
	* Dimensions are 2.05″x2.1″