48MHz Cortex-M0+ 32-bit CPU

Supports single-cycle multiply instructions,MPU

64KBFlash, 8KB SRAM

512Byte OTP

Flexible power management mode

– Auto switching of VBAT backup power

– 1μA VBAT mode + RTC + backup register

– 0.7μA Stop mode, CPU + SRAM hold mode

– 1.15μA Stop mode + RTC

– 4.1 μs wake up@Stop mode from flash executor

Power monitoring: supports BOR and PVD

Clock source

– External high-speed clock: 1~32MHz, supports oscillation stop detection

– External low-speed clock: 32.768KHz, supports oscillation stop detection

– Internal high-speed clock: 32MHz, full temperature change ≤ ±2%

– Internal low-power low-speed clock: 32KHz

– PLL: 5MHz ~ 48MHz

Up to 56 IOs, anti-backflow and compatible with 5V communications; up to 20mA for IO with high drive capability

2-channel DMA controller with flexible mapping

8x timers

– 1x 16-bit 4-channel general timers

– 1x 16-bit basic timer

– 1x 16-bit low-power timers, one of which supports orthogonal encoding

– 1x 24-bit SysTick

– 2x watchdogs: IWDG and WWDG

RTC calibration accuracy ± 0.477 ppm, support alarm clock, timestamp, micro-second unit wake-up timer

Communication interface

– 1x LPUART interfaces, supports wakeup from FIFO and Stop mode

– 2x U(S)ART interfaces, one of which supports SPI master mode

– 1x SPI interfaces, with maximum speed of 20Mbps in master mode

– 2x I2C, supports master and slave modes, 1Mbps Fm+

Information security 

– SM4,TRNG, CRC

– TAMP anti-tamper and backup registers

–PCROP code protection area

LCD supports up to 8COM x 32SEG

On-chip resistance voltage, high and low drive can be dynamic switching, low power consumption to enhance the display effect, no external capacitance

Built-in charge pump, VLCD voltage can be higher than VDD and does not change with VDD, even if VDD jitter still maintain good display

12-bit 1.14Msps high-precision SAR ADC, capable of measuring signals with high output impedance

2x ultra-low power comparators，rail-to-rail input supported

Built-in reference voltage source VREFBUF，2.048V, 2.5V, supports output through IO

1x temperature sensor, with maximum error of ±2°C

96-bit unique ID

Built-in Bootloader: supports UART and SPI

SWD debugging

Operating conditions: 1.8V~5.5V, -40°C~85°C

Package: LQFP64/48, QFN32