UPD4991AGS中文资料瑞萨数据手册PDF规格书

FEATURES:

• Time (hour, minute, and second) and calendar (leap year, year, month, day, and date) counters

• Leap year can be automatically identified or set

• 12- and 24-hour modes selectable

• 4-bit parallel input/output in BCD data format

• Alarm function (hour, minute, second, month, day, date)

• One of 0.1, 1.0, 10, 30, and 60-s interval timer outputs selectable

• One of 2048, 1024, 64, 16, 1 Hz, 1-pulse output, and H®L output selectable as alarm coincidence output

• Upward compatible with mPD4991

• Low power consumption: 2 mA typ. (VDD = 2.4 V)