一、 上海锐星微电子推出国产内部集成数字温补TCXO 32.768K RTC RS4TC8025兼容替代RX8025 EPSON,
软硬件完全pin to pin兼容EPSON，不需要更改硬件，性价比超高国产高精度实时时钟RTC替代 EPSON RX8025。
二、 RS4TC8025是一款I2C总线的实时时钟，包括32.768 kHz DTCXO，广泛应用于水表、气表、电表集中器、Tbox、交换机。
RS4TC8025 Temperature Compensated Real Time Clock
Features
• Built-in 32.768 kHz DTCXO
• High Stability: < ±5ppm
• Supports I2C-Bus's high-speed mode (Up to
400 kHz)
• Alarm interrupt function for day, date, hour,
and minute settings
• Wakeup timer interruption
• Time update interrupt function for Seconds,
minutes
• Temperature compensated 32.768 kHz output
with OE function (FOE and FOUT pins)
• Auto correction of leap years (from 2000 to
2099)
• Wide interface voltage range: 2.5 V ~ 5.5 V
• Wide time-keeping voltage range:1.6 V~5.5 V
• Low current consumption: 0.90 uA / 3 V (Typ.)
• Industry Temperature (- 40℃ ~ +85 ℃)
