Hardware

AN2799

4/14

2.1

STM32F103xx microcontroller

The following list is a brief description of the features of the STM32F103xx microcontroller.

Please refer to the STM32F103xx datasheet for a more detailed description of the device.

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Core: ARM 32-bit Cortex™-M3 CPU

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72 MHz, 90 DMIPS with 1.25 DMIPS/MHz

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Single-cycle multiplication and hardware division

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Memory

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32-to-128 Kbytes of Flash memory

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6-to-20 Kbytes of SRAM

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Clock, reset and supply management

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2.0 to 3.6 V application supply and I/Os

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POR, PDR, and programmable voltage detector (PVD)

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4-to-16 MHz quartz oscillator

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Internal 8 MHz factory-trimmed RC

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Internal 40 kHz RC

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PLL for CPU clock

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32 kHz oscillator for RTC with calibration

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Low power

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Sleep, stop and standby modes

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VBAT supply for RTC and backup registers

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2 x 12-bit, 1 µs A/D converters (16-channel)

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Conversion range: 0 to 3.6 V

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Dual-sample and hold capability

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Temperature sensor

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DMA

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7-channel DMA controller

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Debug mode

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Serial wire debug (SWD) & JTAG interfaces

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Up to 80 fast I/O ports

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26/36/51/80 I/Os, all mappable on 16 external interrupt vectors, all 5 V-tolerant

except for analog inputs

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Up to 7 timers

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Up to three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter

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16-bit, 6-channel advanced control timer: up to 6 channels for PWM output dead

time generation and emergency stop

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2 watchdog timers (independent and window)

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SysTick timer: a 24-bit down counter

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Up to 9 communication interfaces

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