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參數(shù)資料
| 型號： | DS1318 |
| 元件分類： | 通用總線功能 |
| 英文描述： | Parallel-Interface Elapsed Time Counter |
| 中文描述： | 并行接口歷時計數(shù)器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 158K |
| 代理商： | DS1318 |
General Description
The DS1318 parallel-interface elapsed time counter
(ETC) is a 44-bit counter that maintains the amount of
time that the device operates from main and/or backup
power or during an external event. The internal
frequency of the counter clock is 4.096kHz, which pro-
vides a 244μs resolution and a maximum count of over
136 years. A built-in power-sense circuit detects power
failures, automatically switches to the backup supply,
and controls the timer. If an external event timer is
desired, the control input EXT can control the counter
operation. An open-drain output provides an interrupt,
and a square-wave output provides a programmable
square wave. The DS1318 is accessed through a byte-
wide parallel interface, and operates over the industrial
temperature range.
Applications
Power Meters
Industrial Controls
Servers
Features
Byte-Wide Parallel Interface
44-Bit Binary Counter Provides Timer with 244μs
Resolution
Automatic Power-Fail Detect and Switch Circuitry
Selects Power Source from the Primary Power
and the Battery, and Write Protects the Internal
Registers
Internal Power-Fail Circuit Allows Timer to
Provide Primary or Battery Operation Times
Timer can Alternately Provide an Event Timer of
Either an Active-High or Active-Low Pulse
Interrupt Output Generated Periodically or When
the Upper 32 Bits of the Counter Match an Alarm
Register
Square-Wave Output with 16 Selectable
Frequencies from 32.768kHz to 0.5Hz
+3.3V Operation
Industrial Temperature Range: -40°C to +85°C
D
Parallel-Interface Elapsed Time Counter
______________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
DS1318
GND
24
23
22
21
20
19
18
17
16
15
14
13
X1
X2
TOP VIEW
V
BAT
IRQ
V
CC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
TSSOP
DQ2
DQ1
DQ0
A0
A1
A2
A3
1
2
3
4
5
6
10
11
12
9
8
7
SQW
EXT
GND
Pin Configuration
Ordering Information
DS1318
-
CPU
V
CC
SQW
V
CC
DQ–DQ7
A3–A0
GND
RPU
X1
IRQ
WE
OE
CE
X2
EXT
EXTERNAL
COUNTER
ENABLE
(EVENT TIMER)
0.1
μ
F
V
BAT
Typical Operating Circuit
Rev 0; 2/04
PART
TEMP RANGE
PIN-
PACKAGE
TOP MARK
DS1318
-40°C to +85°C
24 TSSOP,
4.4mm
DS1318
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1318_10 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Parallel-Interface Elapsed Time Counter |
| DS1318E | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Parallel-Interface Elapsed Time Counter |
| DS1318E/GG8 | 制造商:Maxim Integrated Products 功能描述:44 BIT PARALLEL INTFACE ETC 24P TSS - Rail/Tube |
| DS1318E+ | 功能描述:實時時鐘 Parallel-Interface Elapsed Time Cntr RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1318E+T&R | 制造商:Maxim Integrated Products 功能描述:44 BIT PRLLEL INTFC ETC TRL LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC COUNTER ELAPSED TIME 24TSSOP |
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