Mainstream Performance line, Arm Cortex-M3 MCU with 128 Kbytes of Flash memory, 72 MHz CPU, motor control, USB and CAN



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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


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


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


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)

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®

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