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參數(shù)資料
| 型號(hào)： | DS1603 |
| 元件分類： | 通用總線功能 |
| 英文描述： | Elapsed Time Counter Module |
| 中文描述： | 歷時(shí)計(jì)數(shù)器模塊 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 104K |
| 代理商： | DS1603 |
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FEATURES
§
Two 32–bit counters keep track of real time
and elapsed time
§
Counters keep track of seconds for over 125
years
§
Battery powered counter counts seconds from
the time battery is attached until V
BAT
is less
than 2.5 volts
§
V
CC
powered counter counts seconds while
V
CC
is above 4.25 volts and retains the count
in the absence of V
CC
under battery backup
power
§
Clear function resets selected counter to 0
§
Read/Write serial port affords low pin count
§
Powered internally by a lithium energy cell
that provides over 10 years of operation
§
1-byte protocol defines read/write, counter
address and software clear function
§
Self-contained crystal provides an accuracy of
±2 min per month
§
Operating temperature range of 0°C to 70°C
§
Low profile SIP module
PIN ASSIGNMENT
PIN DESCRIPTION
RST
CLK
DQ
GND
V
CC
OSC
NC
- Reset
- Clock
- Data Input/Output
- Ground
- +5 Volts
- 1 Hz Oscillator Output
- No Connect
DESCRIPTION
The DS1603 is a real time clock/elapsed time counter designed to count seconds when V
CC
power is
applied and continually count seconds under battery backup power with an additional counter regardless
of the condition of V
CC
. The continuous counter can be used to derive time of day, week, month, and year
by using a software algorithm. The V
CC
powered counter will automatically record the amount of time
that V
CC
power is applied. This function is particularly useful in determining the operational time of
equipment in which the DS1603 is used. Alternatively, this counter can also be used under software
control to record real time events. Communication to and from the DS1603 takes place via a 3–wire
serial port. A 1-byte protocol selects read/ write functions, counter clear functions and oscillator trim. The
device contains a 32.768 kHz crystal which will keep track of time to within
±
2 min/mo. An internal
lithium energy source contains enough energy to power the continuous seconds counter for over 10 years.
OPERATION
The main elements of the DS1603 are shown in Figure 1. As shown, communications to and from the
elapsed time counter occur over a 3–wire serial port. The port is activated by driving
RST
to a high state.
With
RST
at high level 8 bits are loaded into the protocol shift register providing read/write, register
select, register clear, and oscillator trim information. Each bit is serially input on the rising edge of the
DS1603
Elapsed Time Counter Module
www.dalsemi.com
1
2
3
4
5
6
7
V
CC
RST
DQ
NC
CLK
OSC
GND
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1603+ | 功能描述:實(shí)時(shí)時(shí)鐘 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1603J | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TRI-STATE Dual Receiver |
| DS1603J/883 | 制造商:National Semiconductor Corporation 功能描述:Dual Receiver 14-Pin CDIP |
| DS1603N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Timer Circuit |
| DS16-03P | 制造商:Cooper Bussmann 功能描述:TOP SCREW-ON INSERTION BRIDGE, 3 POLE, F - Bulk 制造商:COOPER BUSSMANN 功能描述:TOP SCREW-ON INSERTION BRIDGE, 3 POLE, F |
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