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参数资料
| 型号： | MM58167 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | Microprocessor Real Time Clock |
| 中文描述： | 微处理器实时时钟 |
| 文件页数： | 1/10页 |
| 文件大小： | 173K |
| 代理商： | MM58167 |
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.
相关PDF资料 |
PDF描述 |
|---|---|
| MM58167B | Microprocessor Real Time Clock |
| MM58167BN | Microprocessor Real Time Clock |
| MM58167BV | Microprocessor Real Time Clock |
| MM58174 | Microprocessor-Compatible Real-Time Clock |
| MM58174A | Microprocessor-Compatible Real-Time Clock |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MM58167AN | 制造商:Texas Instruments 功能描述: |
| MM58167B | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Microprocessor Real Time Clock |
| MM58167BN | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Microprocessor Real Time Clock |
| MM58167BV | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Microprocessor Real Time Clock |
| MM58174 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Microprocessor-Compatible Real-Time Clock |
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