Description

The STM32F103x8 and STM32F103xB performance line family incorporates the highperformance ARM Cortex™-M3 32-bit RISC core operating at a 72 MHz frequency, highspeed 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 STM32F103xx medium-density performance line family operates from a 2.0 to 3.6 V power supply. It is 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.

Features

■ Core: ARM 32-bit Cortex™-M3 CPU
– 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 deadtime generation and emergency stop
– 2 watchdog timers (Independent and Window)
– SysTick timer: a 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)
– Up to 2 SPIs (18 Mbit/s)
– CAN interface (2.0B Active)
– USB 2.0 full-speed interface
■ CRC calculation unit, 96-bit unique ID
■ Packages are ECOPACK®

Applications

● Motor drive and application control
● Medical and handheld equipment
● PC peripherals gaming and GPS platforms
● Industrial applications: PLC, inverters, printers, and scanners
● Alarm systems, Video intercom, and HVAC