(China (Mainland))
Product Summary
The UPD4991AGS-E2-A is a CMOS integrated circuit that has the ability to input/output 4-bit parallel time data and calendar data to/from a microcomputer and includes an alarm function. Its reference oscillation frequency is 32.768 kHz. Hour, minute, second, year, month, day, and date data is stored internally. The UPD4991AGS-E2-A consumes 30 % less power than the mPD4991.
Parametrics
UPD4991AGS-E2-A absolute maximum ratings: (1)Supply Voltage VPP: –0.3 ~ 7.0 V; (2)Input Voltage Range VIN: –0.3 ~ VPP + 0.3 V; (3)Output Pin Breakdown Voltage VOUT: 7.0 V; (4)Low-Level Output Current IOUT: 30 mA; (5)(N-ch open-drain)Operating Ambient Temperature Topt: –40 ~ +85 ℃; (6)Storage Temperature Tstg: –65 ~ +125 ℃.
Features
UPD4991AGS-E2-A features: (1)Time (hour, minute, and second)and calendar (leap year, year, month, day, and date)counters; (2)Leap year can be automatically identified or set; (3)12- and 24-hour modes selectable; (4)4-bit parallel input/output in BCD data format; (5)Alarm function (hour, minute, second, month, day, date); (6)One of 0.1, 1.0, 10, 30, and 60-s interval timer outputs selectable; (7)One of 2048, 1024, 64, 16, 1 Hz, 1-pulse output, and HL output selectable as alarm coincidence output; (8)Upward compatible with mPD4991; (9)Low power consumption: 2 mA typ. (VDD = 2.4 V).
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