Main features

－  Arm® Cortex®-M4F @72MHz, 90DMIPS, built-in 1KB instruction cache, supports Flash acceleration unit execution program 0 waiting

－  Encrypted memory

•  64KByte on-chip Flash, supports encrypted storage, 10,000 erases, and 10 years of data maintenance

•  8KByte on-chip SRAM, Stop2 mode hold, Standby can be configured to hold

－  Power consumption mode

•  Support Run, Sleep, Stop0, Stop2, Standby modes

－  High-performance analog interface

•  1 12bit 4.2Msps ADC, 12/10/8/6bits configurable, up to 16 external single-ended input channels, 3 internal single-ended input channels, support differential mode

－  Supports internal RC or external crystal clock inputs 

－  Reset

•  Supports power-on/power-down/external pin reset

•  Support watchdog reset and software reset

•  Supports programmable voltage detection

－  Supports up to 39+1 GPIO

－  Communication interface

•  4 U(S)ART interfaces, including 2 USART interfaces (support 1xISO7816, 1xIrDA, LIN), and 2 UART interfaces,

•  2 SPI interfaces, master mode speed up to 28Mbps (non-CRC mode)/20Mbps (CRC mode), slave mode speed up to 32Mbps, supports I2S communication

•  2 I2C interfaces, speed up to 1MHz, can be matched by master and slave mode, and supports dual address response in slave mode

－  1 high-speed DMA controller, supports 8 channels, and can be used for any channel source and destination address.

－  RTC real-time clock, supports leap year perpetual calendar, alarm clock events, periodic wake-up, and supports internal and external clock calibration

－  1 buzzer, supports complementary output, 12mA output driving capability

－  Timer counter

•  2 16bit advanced timing counters, up to 7.8nS control accuracy, support 14 complementary PWM outputs

•  4 16bit universal timing counters, support input capture/output comparison/PWM output

•  1 16bit basic timing counter

•  1 16bit low-power timing counter, supports dual pulse counting function, can work in STOP2 mode

•  1 24bit SysTick

•  1 14-bit window watchdog (WWDG)

•  1 12bit independent watchdog (IWDG)

－  Safety features

•  Flash storage encryption, multi-user partition management (MMU)

•  CRC16/32 operation

•  Support write protection (WRP), multiple read protection (RDP) levels (L0/L1/L2)

•  Supports secure startup, program encryption download, and secure updates

•  Support external clock failure monitoring and anti-tamping monitoring

－  96-bit UID and 128-bit UCID

－  Highly reliable working environment

•  2.4V ～ 3.6V/-40 ℃ ～ 105 ℃

•  ESD: ±4kV (HBM model)