BL5372 Overview
The BL5372 is a CMOS type real-time clock, which is connected to the CPU via two wires and capable of serial transmission of clock to the CPU. The BL5372 can generate various periodic interrupt clock pulses lasting for long period (one month), and alarm interrupt can be made by two incorporated systems. Since an oscillation circuit is driven at a constant voltage, it undergoes fluctuations of few voltage and...
BL5372 Key Features
- Lowest supply current: 400nA TYP. @ 5V
- Connected to the CPU via only 2-wires
- A clock counter (counting hours, minutes
- Two systems output providing interrupt to the CPU output (period of one month to one second, interrupt halt function)
- Two systems output of alarm functions
- Oscillation halt sensing to judge internal data validity
- Clock output of 32.768KHz (32KHz) (output controllable via a register)
- Second digit adjustment by ±30 seconds
- Automatic leap year recognition up to the year 2099
- 12-hour or 24-hour time display selectable