资 源 简 介
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 to 256 Kbytes of Flash memory
– 64 Kbytes of general-purpose SRAM
■ Clock， reset and supply management
– 2.0 to 3.6 V applicaTIon supply and I/Os
– POR， PDR， and programmable voltage
detector （PVD）
– 3-to-25 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
■ 2 × 12-bit， 1 µs A/D converters （16 channels）
– Conversion range： 0 to 3.6 V
– Sample and hold capability
– Temperature sensor
– up to 2 MSPS in interleaved mode
■ 2 × 12-bit D/A converters
■ DMA： 12-channel DMA controller
– Supported peripherals： timers， ADCs， DAC，
I
2Ss， SPIs， I2Cs and USARTs
■ Debug mode
– Serial wire debug （SWD） & JTAG interfaces
– Cortex-M3 Embedded Trace Macrocell™
■ Up to 80 fast I/O ports
– 51/80 I/Os， all mappable on 16 external
interrupt vectors and almost all 5 V-tolerant
■ CRC calculation unit， 96-bit unique ID
■ Up to 10 timers with pinout remap capability
– Up to four 16-bit timers， each with up to 4
IC/OC/PWM or pulse counter and
quadrature （incremental） encoder input
– 1 × 16-bit motor control PWM timer 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 14 communication interfaces with pinout
remap capability
– 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 a
multiplexed I2S interface that offers audio
class accuracy via advanced PLL schemes
– 2 × CAN interfaces （2.0B Active） with
512 bytes of dedicated SRAM
– USB 2.0 full-speed device/host/OTG
controller with on-chip PHY that supports
HNP/SRP/ID with 1.25 Kbytes of dedicated
SRAM
– 10/100 Ethernet MAC with dedicated DMA
and SRAM （4 Kbytes）： IEEE1588 hardware
support， MII/RMII available on all packages
