pca8565 NXP Semiconductors, pca8565 Datasheet
pca8565
Manufacturer Part Number
pca8565
Description
Real Time Clock/calender
Manufacturer
NXP Semiconductors
Datasheet
1.PCA8565.pdf
(26 pages)
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1. General description
2. Features
3. Applications
4. Quick reference data
Table 1:
Symbol
V
I
T
DD
amb
DD
Quick reference data
Parameter
supply voltage
supply current
ambient temperature
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
register is incremented automatically after each written or read data byte.
PCA8565
Real time clock/calender
Rev. 01 — 31 March 2003
Provides year, month, day, weekday, hours, minutes and seconds based on
32.768 kHz quartz crystal
Century flag
Clock operating voltage: 1.8 to 5.5 V
Extended operating temperature range: 40 to +125 C
Low backup current; typical 0.5 A at V
400 kHz two-wire I
Programmable clock output for peripheral devices (32.768 kHz, 1024 Hz,
32 Hz and 1 Hz)
Alarm and timer functions
Integrated oscillator capacitor
Internal power-on reset
I
Open-drain interrupt pin.
Automotive
Industrial
Other applications that require a wide operating temperature range.
2
C-bus slave address: read A3H and write A2H
Conditions
I
T
f
2
SCL
amb
C-bus active; f
2
= 400 kHz
C-bus. Maximum bus speed is 400 kbit/s. The built-in word address
= 40 to +125 C
2
C-bus interface (at V
SCL
= 400 kHz;
DD
DD
= 3.0 V and T
= 1.8 to 5.5 V)
Min
1.8
-
40
amb
Typ
-
-
-
= 25 C
Max
5.5
820
Product data
125
Unit
V
C
A
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