(China (Mainland))
Product Summary
The MM58274CN is fabricated using low threshold metal gate CMOS technology and is designed to operate in bus oriented microprocessor systems where a real time clock and calendar function are required. The on-chip 32.768 kHz crystal controlled oscillator of the MM58274CN will maintain timekeeping down to 2.2V to allow low power standby battery operation. This device is pin compatible with the MM58274CN but continues timekeeping up to tens of years. The MM58274C is a direct replacement for the MM58274CN offering improved Bus access cycle times.
Parametrics
MM58274CN absolute maximum ratings: (1)DC Input or Output Voltage: -0.3V to VDD a 0.3V; (2)DC Input or Output Diode Current: ±5.0 mA; (3)Storage Temperature, TSTG: -65℃ to a150℃; (4)Supply Voltage, VDD: 6.5V; (5)Power Dissipation, PD: 500 mW; (6)Lead Temperature (Soldering, 10 seconds): 260°.
Features
MM58274CN features: (1)Timekeeping from tenths of seconds to tens of years in independently accessible registers; (2)Leap year register; (3)Hours counter programmable for 12 or 24-hour operation; (4)Buffered crystal frequency output in test mode for easy oscillator setting; (5)Data-changed flag allows simple testing for time rollover; (6)Independent interrupting time with open drain output; (7)Fully TTL compatible; (8)Low power standby operation (10 mA at 2.2V); (9)Low cost 16-pin DIP and 20-pin PCC.
Diagrams
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 MM58274CN |
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MM58167B |
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MM58241 |
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MM58242 |
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MM58274C |
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Negotiable |
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MM58274CN |
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