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參數資料
| 型號： | MM58167BV |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | Microprocessor Real Time Clock |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 173K |
| 代理商： | MM58167BV |
TL/F/11070
M
October 1990
MM58167B
Microprocessor Real Time Clock
General Description
The MM58167B is a low threshold metal gate CMOS circuit
that functions as a real time clock in bus oriented microproc-
essor systems. The device includes an addressable real
time counter, 56 bits of RAM, and two interrupt outputs. A
POWER DOWN input allows the chip to be disabled from
the rest of the system for standby low power operation. The
time base is a 32.768 kHz crystal oscillator.
Features
Y
Microprocessor compatible (8-bit data bus)
Y
Milliseconds through month counters
Y
56 bits of RAM with comparator to compare the real
time counter to the RAM data
Y
2 INTERRUPT OUTPUTS with 8 possible interrupt
signals
Y
POWER DOWN input that disables all inputs and out-
puts except for one of the interrupts
Y
Status bit to indicate rollover during a read
Y
32.768 kHz crystal oscillator
Y
Four-year calendar (no leap year)
Y
24-hour clock
Connection Diagrams
Dual-In-Line Package
TL/F/11070–1
Top View
Order Number MM58167BN
See NS Package Number N24A
PCC Package
TL/F/11070–2
Top View
Order Number MM58167BV
See NS Package Number V28A
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
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| MM58174 | Microprocessor-Compatible Real-Time Clock |
| MM58174A | Microprocessor-Compatible Real-Time Clock |
| MM58174AN | Microprocessor-Compatible Real-Time Clock |
| MM58241 | MM58241 High Voltage Display Driver |
| MM58241N | MM58241 High Voltage Display Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MM58174 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Microprocessor-Compatible Real-Time Clock |
| MM58174A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Microprocessor-Compatible Real-Time Clock |
| MM58174AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Microprocessor-Compatible Real-Time Clock |
| MM58201 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Multiplexed LCD Driver |
| MM58241 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:MM58241 High Voltage Display Driver |
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