The STM32F103xx medium-density performance line family incorporates the high-performance ARM?Cortex?-M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 128 Kbytes and SRAM up to 20 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer two 12-bit ADCs, three general purpose 16-bit timers plus one PWM timer, as well as standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs, an USB and a CAN. The devices operate from a 2.0 to 3.6 V power supply. They are available in both the –40 to +85 °C temperature range and the –40 to +105 °C extended temperature range. A comprehensive set of power-saving mode allows the design of low-power applications. The STM32F103xx medium-density performance line family includes devices in six different package types: from 36 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included, the description below gives an overview of the complete range of peripherals proposed in this family. These features make the STM32F103xx medium-density performance line microcontroller family suitable for a wide range of applications such as motor drives, application control, medical and handheld equipment, PC and gaming peripherals, GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, and HVACs.
All features
ARM?32-bit Cortex?-M3 CPU Core
72 MHz maximum frequency,1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access
Single-cycle multiplication and hardware division
Memories
64 or 128 Kbytes of Flash memory
20 Kbytes of SRAM
Clock, reset and supply management
2.0 to 3.6 V application supply and I/Os
POR, PDR, and programmable voltage detector (PVD)
4-to-16 MHz crystal oscillator
Internal 8 MHz factory-trimmed RC
Internal 40 kHz RC
PLL for CPU clock
32 kHz oscillator for RTC with calibration
Low-power
Sleep, Stop and Standby modes
VBAT supply for RTC and backup registers
2 x 12-bit, 1 μs A/D converters (up to 16 channels)
Conversion range: 0 to 3.6 V
Dual-sample and hold capability
Temperature sensor
DMA
7-channel DMA controller
Peripherals supported: timers, ADC, SPIs, I2Cs and USARTs
Up to 80 fast I/O ports
26/37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant
Debug mode
Serial wire debug (SWD) & JTAG interfaces
7 timers
Three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
16-bit, motor control PWM timer with dead-time generation and emergency stop
2 watchdog timers (Independent and Window)
SysTick timer 24-bit downcounter
Up to 9 communication interfaces
Up to 2 x I2C interfaces (SMBus/PMBus)
Up to 3 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)
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