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PCA8565

Description
Real-time clock/calendar
File Size373KB,47 Pages
ManufacturerNXP
Websitehttps://www.nxp.com
Download Datasheet Download user manual Compare View All

PCA8565 Overview

Real-time clock/calendar

PCA8565A
Real-time clock/calendar
Rev. 3 — 1 September 2014
Product data sheet
1. General description
The PCA8565A is a CMOS
1
Real-Time Clock (RTC) and calendar optimized for low
power consumption. A programmable clock output, interrupt output, and voltage-low
detector are also provided. All addresses 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.
For a selection of NXP Real-Time Clocks, see
Table 37 on page 39
2. Features and benefits
AEC-Q100 compliant for automotive applications
Provides year, month, day, weekday, hours, minutes, and seconds based on
32.768 kHz quartz crystal
Clock operating voltage: 1.8 V to 5.5 V
Extended operating temperature range:
40 C
to +125
C
Low backup current: typical 0.65
A
at V
DD
= 3.0 V and T
amb
= 25
C
400 kHz two-line I
2
C-bus interface (at V
DD
= 1.8 V to 5.5 V)
Programmable clock output for peripheral devices (32.768 kHz, 1.024 kHz, 32 Hz, and
1 Hz)
Alarm and timer functions
Two integrated oscillator capacitors
Internal Power-On Reset (POR)
I
2
C-bus slave address: read A3h; write A2h
Open-drain interrupt pin
3. Applications
Automotive
Industrial
Applications that require a wide operating temperature range
1.
The definition of the abbreviations and acronyms used in this data sheet can be found in
Section 21.

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