UPD4992CX中文資料瑞薩數(shù)據(jù)手冊PDF規(guī)格書

8-Bit Parallel I/O Calendar Clock

FEATURES:

? Internal counter for time (hour, minute, second), and calendar (leap year, year, month, day of month, day of week)

? Super low power consumption (IDD = 2 mA MAX. at VDD = 2.4 V)

? Automatic determination of leap year, manual setting possible

? 12 hour/24 hour mode selectable

? 8-bit parallel input/output in BCD data format

? 12 kinds of interval timer output (can be used as watchdog timer)

? Internal voltage detection circuit for automatic determination of battery run-down

? High accuracy