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  • 48MHz Cortex-M0+ 32-bit CPU

  • Supports single-cycle multiply instructions

  • Up to 256KB Flash and 28KB SRAM

  • 1KB OTP

  • Flexible power management mode

    – Auto switching of VBAT backup power

    – 0.9μA VBAT mode + RTC + backup register

    – 1μA Stop mode, CPU + SRAM hold mode

    – 1.3μA Stop mode + RTC

  • Power monitoring: supports BOR and PVD

  • Clock source

    – External high-speed clock: 4~32MHz, supports oscillation stop detection

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

    – Internal high-speed clock: 16MHz, full temperature change ≤ ±2%

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

    – PLL: 6MHz ~ 48MHz

  • Up to 73 IOs, anti-backflow and compatible with 5V communications; up to 20mA for IO with high drive capability

  • 2-channel DMA controller with flexible mapping

  • RTC supports alarm clock and cycle timer,with calibration accuracy of ±0.477ppm

  • 9x timers

    – 3x 16-bit 4-channel general timers

    – 1x 16-bit basic timer

    – 2x 16-bit low-power timers, one of which supports orthogonal encoding

    – 1x 24-bit SysTick

    – 2x watchdogs: IWDG and WWDG

  • IRTIM supports timers and U(S)ART interconnection for infrared control

  • Communication interface

    – 2x LPUART interfaces, supports wakeup from Stop mode

    – 4x U(S)ART interfaces, one of which supports ISO7816 and SPI master mode; 3x UART interfaces

    – 2x SPI interfaces, with maximum speed of 20Mbps in master mode and 16Mbps in slave mode

    – 1x I2C, supports master and slave modes, 1Mbps Fm+ and wakeup from Stop mode

  • Information security

    – AES algorithm coprocessor

    – TRNG, CRC

    – TAMP anti-tamper and backup registers

  • LCD supports up to 8COM x 40SEG

    – Charge pump mode: strong drive capability; VLCD boost voltage can be higher than VDD and does not varies with VDD; VLCD can be configured in multiple levels up to 5.25V

    – On-chip resistor voltage dividing mode: Contrast is adjustable in 16 levels, high and low drive capacity can be switched dynamically, and no external capacitor is required

  • 12-bit 1Msps high-precision SAR ADC, capable of measuring signals with high output impedance

  • 2x ultra-low power comparators with 6-bit DAC comparison reference and rail-to-rail input supported

  • Built-in reference voltage source VREFBUF: 3.0V, 2.5V, 2.048V, supports output through IO

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

  • 96-bit unique ID

  • Built-in Bootloader: supports UART

  • SWD debugging

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

  • Package: LQFP80/64/48

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