音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

DS1318 Datasheet

  • DS1318

  • Parallel-Interface Elapsed Time Counter

  • 14頁

  • DALLAS   DALLAS

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

Rev 0; 2/04
Parallel-Interface Elapsed Time Counter
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 244碌s 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.
鈾?/div>
Byte-Wide Parallel Interface
鈾?/div>
44-Bit Binary Counter Provides Timer with 244碌s
Resolution
鈾?/div>
Automatic Power-Fail Detect and Switch Circuitry
Selects Power Source from the Primary Power
and the Battery, and Write Protects the Internal
Registers
鈾?/div>
Internal Power-Fail Circuit Allows Timer to
Provide Primary or Battery Operation Times
鈾?/div>
Timer can Alternately Provide an Event Timer of
Either an Active-High or Active-Low Pulse
鈾?/div>
Interrupt Output Generated Periodically or When
the Upper 32 Bits of the Counter Match an Alarm
Register
鈾?/div>
Square-Wave Output with 16 Selectable
Frequencies from 32.768kHz to 0.5Hz
鈾?/div>
+3.3V Operation
鈾?/div>
Industrial Temperature Range: -40擄C to +85擄C
Features
DS1318
Applications
Power Meters
Industrial Controls
Servers
Ordering Information
PART
DS1318
TEMP RANGE
-40擄C to +85擄C
PIN-
PACKAGE
24 TSSOP,
4.4mm
TOP MARK
DS1318
Typical Operating Circuit
V
CC
RPU
X1
0.1碌F
V
CC
SQW
EXT
X2
GND
EXT
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
Pin Configuration
IRQ
WE
CPU
OE
CE
A3鈥揂0
DQ鈥揇Q7
GND
DS1318
V
BAT
X1
-
EXTERNAL
COUNTER
ENABLE
(EVENT TIMER)
DS1318
X2
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
V
BAT
IRQ
SQW
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
TSSOP
______________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

DS1318 產(chǎn)品屬性

  • Maxim Integrated Products

  • Tube

DS1318相關(guān)型號(hào)PDF文件下載

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動(dòng)力！意見一經(jīng)采納，將有感恩紅包奉上哦！