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

• 256 to 512 Kbytes of Flash memory
• up to 64 Kbytes of SRAM
• Flexible static memory controller with 4 Chip Select. Supports Compact Flash, SRAM, PSRAM, NOR and NAND memories
• LCD parallel interface, 8080/6800 modes

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 with calibration
• 32 kHz oscillator for RTC with calibration

Low power

• Sleep, Stop and Standby modes
• VBAT supply for RTC and backup registers

3 × 12-bit, 1 μs A/D converters (up to 21 channels)

• Conversion range: 0 to 3.6 V
• Triple-sample and hold capability
• Temperature sensor

DMA: 12-channel DMA controller

• Supported peripherals: timers, ADCs, DAC, SDIO, I2Ss, SPIs, I2Cs and USARTs

Debug mode

• Serial wire debug (SWD) & JTAG interfaces
• Cortex®-M3 Embedded Trace Macrocell™

Up to 112 fast I/O ports

• 51/80/112 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant

Up to 11 timers

• Up to four 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
• 2 × 16-bit motor control PWM timers with dead-time generation and emergency stop
• 2 × watchdog timers (Independent and Window)
• SysTick timer: a 24-bit downcounter
• 2 × 16-bit basic timers to drive the DAC

Up to 13 communication interfaces

• Up to 2 × I2C interfaces (SMBus/PMBus)
• Up to 5 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)
• Up to 3 SPIs (18 Mbit/s), 2 with I2S interface multiplexed
• CAN interface (2.0B Active)
• USB 2.0 full speed interface
• SDIO interface