Kernel: ARM 32-bit CortexTM-M3 CPU

−72MHz operating frequency

− Single cycle multiplication and hardware division

Memory

− from 64K or 128K bytes of flash program memory

− up to 20K bytes of SRAM

l clock, reset and power management

− 2.0 to 3.6 volt supply and I/O pins

− Power-on/power-off reset (POR/PDR), programmable voltage monitoring

(PVD)

− 4~16MHz crystal oscillator

− Embedded factory-tuned 8MHz RC oscillator

− Embedded 40kHz RC oscillator with calibration

− PLL that generates the CPU clock

− 32kHz RTC oscillator with calibration

Low power consumption

− Sleep, stop and standby modes

− V BAT supplies power to the RTC and the backup register

L2 12-bit analog-to-digital converters with 1us conversion time (up to 16

− Conversion range: 0 to 3.6V

− Double sampling and hold function

− Temperature sensor

DMA:

− 7-channel DMA controller

− Supported peripherals: timer, ADC, SPI, I 2 C and

USART

Up to 80 fast I/O ports

− 26/37/51/80 I/O ports, all I/O ports can be mapped to

16 external interrupts; almost all ports can tolerate 5V letters

number

Debug mode

− Serial single-wire debugging (SWD) and JTAG interface

Up to 7 timers

− 3 16-bit timers with up to 4 timers per timer

Input capture/output compare/PWM or pulse count channels

And incremental encoder input

− 1 16-bit with dead zone control and emergency brake for motor

Controlled PWM Advanced Control Timer

− 2 watchdog timers (independent and window type)

− System time timer: 24-bit self-decreasing counter

Up to 9 communication interfaces

− Up to 2 I 2 C interfaces (supports SMBus/PMBus)

− Up to 3 USART interfaces (supporting ISO7816 interface,

LIN, IrDA interface and modem control)

 Up to 2 SPI interfaces (18M bits/sec)

− CAN interface (2.0B active)

− USB 2.0 full speed interface

lCRC calculation unit, 96-bit chip unique code