(Hong Kong)
Product Summary
The MC146818P is a real-time clock plus RAM. The device includes the unique MOTEL concept for use with various microprocessors, microcomputers, and larger computers. The MC146818P combines three unique features, a complete time-of-day clock with alarm and one hundred year calendar, a programmable periodic interrupt and square-wave generator, and 50 bytes of low-power static RAM. The MC146818P uses high-speed CMOS technology to interface with 1MHz processor buses.
Parametrics
MC146818P absolute maximum ratings: (1)supply voltage, VDD: -0.3 to 8.0V; (2)all input voltages except OSC1, Vin: VSS-0.5 to VDD+0.5V; (3)current drain per pin excluding VDD and VSS, I: 10mA; (4)operating temperature range, TA: 0 to 70℃; (5)storage temperature range, Tstg: -55 to 150℃.
Features
MC146818P features: (1)low power, high speed, high density CMOS; (2)internal time base and oscillator; (3)counts seconds, minutes, and hours of the Day; (4)counts days of the weeki, data, month, and year; (5)3V to 6V operation; (6)daylight saving time option; (7)automatic end of month recognition; (8)automatic leap year compensation; (9)microprocessor bus compatible; (10)MOTEL circuit for bus univrsality; (11)multiplexed bus for pin efficiency; (12)interfaced with software as 64 RAM locations; (13)14 bytes of general purpose RAM; (14)status bit indicates data integrity.
Diagrams
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 MC14000UB |
Other |
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Negotiable |
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MC14001B |
Other |
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Negotiable |
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MC14001BCP |
ON Semiconductor |
IC GATE NOR QUAD CMOS 14DIP |
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MC14001BCPG |
ON Semiconductor |
Gates (AND / NAND / OR / NOR) 3-18V Quad 2-Input NOR |
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MC14001BDG |
ON Semiconductor |
Gates (AND / NAND / OR / NOR) 3-18V Quad 2-Input NOR |
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MC14001BDR2 |
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IC GATE NOR QUAD CMOS 14SOIC |
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