ZH
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
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