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參數(shù)資料
| 型號： | DS1678SR |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Real-Time Event Recorder |
| 中文描述： | 實時事件記錄 |
| 文件頁數(shù)： | 1/25頁 |
| 文件大?。?/td> | 819K |
| 代理商： | DS1678SR |
DS1678
Real-Time Event Recorder
www.maxim-ic.com
GENERAL DESCRIPTION
The DS1678 real-time clock (RTC) event recorder
records the time and date of a nonperiodic,
asynchronous event each time the
INT
pin is
activated. The device records the seconds, minutes,
hours, date, day of the week, month, year, and
century when the first event occurs, and starts the 16-
bit elapsed time counter (ETC). Subsequent events
trigger the recording of the ETC into the event-log
memory. This allows for up to 1025 events to be
logged. Events can be logged while the device is
operating from either V
CC
or V
BAT
.
PIN CONFIGURATION
X1
FEATURES
Real-Time Clock/Calendar in Binary-Coded
Decimal (BCD) Format Counts Seconds,
Minutes, Hours, Date, Month, Day of the
Week, and Year with Leap Year
Compensation and is Year 2000 Compliant
Logs Up to 1025 Consecutive Events in Read-
Only Battery-Backed Memory
User-Programmable Event Trigger can be
Triggered by the Falling Edge, Rising Edge,
or Rising and Falling Edges of the
Event Counter Register Provides Data on the
Number of Events that Have Been Logged in
the Current Event-Logging Mission
Programmable RTC Alarm
32-Byte, Battery-Backed, General-Purpose
NV RAM
I
2
C*
Serial Interface
Three Resolution Options for Trade-Off
Accuracy vs. Maximum Time Between Events
-40
°
C to +85
°
C Industrial Temperature
Range
Underwriters Laboratory (UL) Recognized
INT
Pin
TYPICAL OPERATING CIRCUIT
ORDERING INFORMATION
PART
PIN-PACKAGE TOP MARK
DS1678
8 Plastic DIP
DS1678+
8 Plastic DIP
DS1678S
8 SO
DS1678S+
8 SO
8 SO (Tape and
Reel)
8 SO (Tape and
Reel)
DS1678
DS1678
DS1678S
DS1678S
DS1678S/T&R
DS1678S
DS1678S+T&R
DS1678S
TOP VIEW
All devices are specified over the -40°C to +85°C operating
range.
A “‘+” anywhere on the top mark denotes a lead-free device.
+
Denotes a lead-free/RoHS-compliant device.
*
I
2
C is a trademark of Philips Corp. Purchase of I
2
C components
from Maxim Integrated Products, Inc., or one of its sublicensed
Associated Companies, conveys a license under the Philips I
C
Patent Rights to use these components in an I
C system, provided
that the system conforms to the I
C Standard Specification as
defined by Philips.
V
CC
INT
SCL
1
8
2
7
DS1678
X2
V
BAT
GND
3
6
4
5
SDA
PDIP (300 mils)
SO (208 mils)
1 of 25
REV: 100405
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
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