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參數(shù)資料
| 型號： | MM58167MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, UUC24 |
| 封裝： | WAFER-24 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 195K |
| 代理商： | MM58167MWC |
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Products > Microprocessor Support > Real Time Clocks > MM58167B
MM58167B
Microprocessor Real Time Clock
Generic P/N 58167B
Contents
General Description
Features
Datasheet
Package Availability, Models, Samples & Pricing
Application Notes
General Description
The MM58167B is a low threshold metal gate CMOS circuit that functions as a real time
clock in bus oriented microprocessor 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
Microprocessor compatible (8-bit data bus)
Milliseconds through month counters
56 bits of RAM with comparator to compare the real time counter to the RAM data
2 INTERRUPT OUTPUTS with 8 possible interrupt signals
POWER DOWN# input that disables all inputs and outputs except for one of the
interrupts
Status bit to indicate rollover during a read
32.768 kHz crystal oscillator
Four-year calendar (no leap year)
24-hour clock
Datasheet
Product Folder
1 of 3
05-Aug-2000 11:44 AM
National P/N MM58167B - Microprocessor Real Time Clock
file:////roarer/root/data13/imaging/BIT...04/08032000/NATL/08012000/MM58167B.html
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