•  CPU core

― 32-bit ARM Cortex-M4 + FPU, DSP instruction support

― Built-in 1KB instruction Cache, which support Flash acceleration unit to execute program 0 wait

― Run up to 72MHz, 90DMIPS

•  Encrypted memory

― Up to 64KByte of embedded Flash memory, supporting encrypted storage, multi-user partition management and data protection, 10,000 cycling and 10 years data retention.

― 8KByte of SRAM, retention in Stop2 mode, configurable in Standby mode

•  Power consumption mode

― Support Run, Sleep, Stop0, Stop2, Standby mode

•  High-performance analog interface

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

― 3x COMP (each comparator has an internal independent 6bit DAC)

•  Clock

― HSE: 4MHz~32MHz external high-speed crystal

― LSE: 32.768KHz external low-speed crystal

― HSI: Internal high-speed RC 8MHz

― LSI: Internal low speed RC 40KHz

― Built-in high speed PLL

― MCO: Support 2-way clock output, configurable SYSCLK, HSI, HSE, LSI, LSE, and PLL clock output that can be divided

•  Reset

― Supports power-on/power-off/external pin reset

― Support watchdog reset, software reset

― Support programmable voltage detection

•  Up to 39+1 GPIOs are supported

•  Communication interface

― 4x U(S)ART interfaces, including 2x USART interfaces (supporting ISO7816, IrDA, LIN) and 2x UART interfaces

― 2x SPI interfaces, master mode up to 28Mbps(without CRC), 20Mbps(with CRC), slave mode up to 32Mbps, support I2S

― 2x I2C interfaces with a rate up to 1 MHz, which can be configured in master/slave mode and support dual address response in slave mode