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PCA8565TS Datasheet

  • PCA8565TS

  • Real time clock/calender

  • 26頁

  • PHILIPS

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PCA8565
Real time clock/calender
Rev. 01 鈥?31 March 2003
Product data
1. General description
The PCA8565 is a CMOS real time clock/calendar optimized for low power
consumption. A programmable clock output, interrupt output and voltage-low detector
are also provided. All address and data are transferred serially via a two-line
bidirectional I
2
C-bus. Maximum bus speed is 400 kbit/s. The built-in word address
register is incremented automatically after each written or read data byte.
2. Features
s
Provides year, month, day, weekday, hours, minutes and seconds based on
32.768 kHz quartz crystal
s
Century 鏗俛g
s
Clock operating voltage: 1.8 to 5.5 V
s
Extended operating temperature range:
鈭?0
to +125
擄C
s
Low backup current; typical 0.5
碌A
at V
DD
= 3.0 V and T
amb
= 25
擄C
s
400 kHz two-wire I
2
C-bus interface (at V
DD
= 1.8 to 5.5 V)
s
Programmable clock output for peripheral devices (32.768 kHz, 1024 Hz,
32 Hz and 1 Hz)
s
Alarm and timer functions
s
Integrated oscillator capacitor
s
Internal power-on reset
s
I
2
C-bus slave address: read A3H and write A2H
s
Open-drain interrupt pin.
3. Applications
s
Automotive
s
Industrial
s
Other applications that require a wide operating temperature range.
4. Quick reference data
Table 1:
Symbol
V
DD
I
DD
T
amb
Quick reference data
Parameter
supply voltage
supply current
ambient temperature
Conditions
I
2
C-bus active; f
SCL
= 400 kHz;
T
amb
=
鈭?0
to +125
擄C
f
SCL
= 400 kHz
Min
1.8
-
鈭?0
Typ
-
-
-
Max
5.5
820
+125
Unit
V
碌A
擄C

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