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參數(shù)資料
| 型號(hào)： | DS1603 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | XO, clock |
| 英文描述： | Elapsed Time Counter Module(經(jīng)過時(shí)間計(jì)數(shù)器模塊) |
| 中文描述： | 1 TIMER(S), REAL TIME CLOCK, SIP7 |
| 封裝： | LOW PROFILE, SIP-7 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 61K |
| 代理商： | DS1603 |
DS1603
Elapsed Time Counter Module
DS1603
042298 1/8
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 zero
Read/Write serial port affords low pin count
Powered internally by a lithium energy cell that pro-
vides over 10 years of operation
One byte protocol defines read/write, counter ad-
dress 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
1
2
3
4
5
6
7
V
CC
RST
DQ
NC
CLK
OSC
GND
PIN DESCRIPTION
RST
CLK
DQ
GND
V
CC
OSC
NC
– Reset
– Clock
– Data Input/Output
– Ground
– +5 Volts
– 1 Hz Oscillator Output
– No Connection
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 con-
dition 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 auto-
matically record the amount of time that V
CC
power is
applied. This function is particularly useful in determin-
ing 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 one 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.
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參數(shù)描述 |
|---|---|
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