Kernel: ARM 32-bit Cortex ™ - M3 CPU
- up to 72MHz operating frequency
- single cycle multiplication and hardware division
Memory
- 64K or 128K bytes of Flash program memory
- up to 20K bytes of SRAM
Clock, reset and power management
- 2.0 to 3.6 V power supply and I / O pins
- power-on / Power-down Reset (POR / PDR), Programmable Voltage Monitor (PVD)
- 4 ~ 16MHz crystal oscillator
- built-in factory adjusted 8MHz RC oscillator
- 40 kHz RC oscillator with internal calibration
- the PLL that generates the CPU clock
- 32kHz RTC oscillator with calibration function
Low power consumption
- sleep, stop and standby modes
- V BAT powers the RTC and back-up registers
2 12-bit analog-to-digital converters, 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: timers, 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 signals
Debug mode
- Serial single wire debug (SWD) and JTAG interface
Up to 7 timers
- 3 16-bit timers, each timer has up to 4 channels and incremental encoder inputs, which are used for input capture / output compare / PWM or pulse count
- 1 16-bit PWM control with advanced control and emergency brake for motor control
- 2 watchdog timers (standalone and window type)
- System time timer: 24-bit self-decrement counter
Up to 9 communication interfaces
- Up to 2 I 2 C interfaces (SMBus / PMBus support)
- Up to 3 USART interfaces (support ISO7816 interface, LIN, IrDA interface and modem control)
- Up to 2 SPI interfaces (18Mbit / s)
- CAN interface (2.0B active)
- USB 2.0 full speed interface
CRC calculation unit, 96 bit chip unique code
