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參數(shù)資料
| 型號(hào)： | MM58274CV |
| 廠(chǎng)商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | XO, clock |
| 英文描述： | Microprocessor Compatible Real Time Clock |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PQCC20 |
| 封裝： | PLASTIC, LCC-20 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 228K |
| 代理商： | MM58274CV |
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TL/F/11219
M
April 1991
MM58274C
Microprocessor Compatible Real Time Clock
General Description
The MM58274C is fabricated using low threshold metal gate
CMOS technology and is designed to operate in bus orient-
ed microprocessor systems where a real time clock and cal-
endar function are required. The on-chip 32.768 kHz crystal
controlled oscillator will maintain timekeeping down to 2.2V
to allow low power standby battery operation. This device is
pin compatible with the MM58174A but continues timekeep-
ing up to tens of years. The MM58274C is a direct replace-
ment for the MM58274 offering improved Bus access cycle
times.
Applications
Y
Point of sale terminals
Y
Teller terminals
Y
Word processors
Y
Data logging
Y
Industrial process control
Features
Y
Same
MM58274
pin-out
as
MM58174A,
MM58274B,
and
Y
Timekeeping from tenths of seconds to tens of years in
independently accessible registers
Y
Leap year register
Y
Hours counter programmable for 12 or 24-hour
operation
Y
Buffered crystal frequency output in test mode for easy
oscillator setting
Y
Data-changed flag allows simple testing for time
rollover
Y
Independent interrupting time with open drain output
Y
Fully TTL compatible
Y
Low power standby operation (10
m
A at 2.2V)
Y
Low cost 16-pin DIP and 20-pin PCC
Block Diagram
TL/F/11219–1
FIGURE 1
TRI-STATE
é
is a registered trademark of National Semiconductor Corp.
Microbus
TM
is a trademark of National Semiconductor Corp.
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM58274CV-12 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:MICROPROCESSOR COMPATIBLE REAL TIME CLOCK |
| MM5829-2600RB8 | 制造商:MURATA-PS 制造商全稱(chēng):Murata Power Solutions Inc. 功能描述:Coaxial Connectors (Chip Type Receptacle) |
| MM5829-2700RJ4 | 功能描述:RF 連接器 12GHz 0.035ohm JSC Type Connector RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點(diǎn)電鍍:Gold 阻抗: 端接類(lèi)型:Solder 主體類(lèi)型:Straight Bulkhead 電纜類(lèi)型: |
| MM5829-2700RK0 | 功能描述:RF 連接器 12GHz 0.035ohm JSC Type Connector RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點(diǎn)電鍍:Gold 阻抗: 端接類(lèi)型:Solder 主體類(lèi)型:Straight Bulkhead 電纜類(lèi)型: |
| MM58341 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:High Voltage Display Driver |
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