Features:
- Built-in high precision RTC with temperature compensation function (RTCH) (comes with a 32.768 kHz crystal resonator stacked into the package)
- 128KB Flash ROM with read/write protection function, 8KB RAM
- Equipped with a 30-segment × 8-common LCD driver
- Achieve ultra-low current consumption, 2.25 μA when RTCH is running
- Built-in smart card interface conforming to ISO7816-3 specification
- Supports various serial interfaces (UART, SPI, I2C)
- Built-in power supply switching circuit
