* Built-in counters for time (hour, minute, and second) and date (year, month, day, and week) Leap years are adjusted automatically. Data is represented in BCD notation (except months in hexadecimal notation) and input/output serially. Commands can b
UPD4990A Datasheet (129.98 KB)
UPD4990A
NEC
129.98 KB
Serial i/o calendar & clock cmos lsi.
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD4990A
SERIAL I/O CALENDAR & CLOCK CMOS LSI
The µPD4990A is a CMOS LSI developed to input/output calendar & clo.
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