PRELIMINARY DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4992
8-Bit Parallel I/O Calendar Clock
The µPD4992 is a CMOS integrated circuit which outputs 8-bit parallel time and calendar data in a system in which a microprocessor is employed.
The µPD4992 operates at 32.
768 kHz and provides year, month, day of month, day of week, hour, minute, and second data to a system.
The µPD4992 internally contains a voltage
regulator so that low power consumption operation and high accuracy are realized even if the supply voltage varies.
The µPD4992 uses the 8-bit bus to facilitate interfacing with a microprocessor.
FEATURES:
• Internal counter for time (hour, minute, second), and calendar (leap year, year, mo...