STM32F103x8
STM32F103xB
Medium-density performance line ARM-based 32-bit MCU with 64
or 128 KB Flash, USB, CAN, 7 timers, 2 ADCs, 9 com. interfaces
Datasheet − production data
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,
I
2Cs 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 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®
Table 1. Device summary
Reference Part number
STM32F103x8 STM32F103C8, STM32F103R8
STM32F103V8, STM32F103T8
STM32F103xB STM32F103RB STM32F103VB,
STM32F103CB, STM32F103T
