PCA8565 Просмотр технического описания (PDF) - Philips Electronics

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производитель

PCA8565

Real time clock/calender

Philips Electronics 

PCA8565

Real time clock/calender

Rev. 01 — 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 I2C-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 flag

s Clock operating voltage: 1.8 to 5.5 V

s Extended operating temperature range: −40 to +125 °C

s Low backup current; typical 0.5 µA at VDD = 3.0 V and Tamb = 25 °C

s 400 kHz two-wire I2C-bus interface (at VDD = 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 I2C-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

VDD

Quick reference data

Parameter

supply voltage

IDD

Tamb

supply current

ambient temperature

Conditions

I2C-bus active; fSCL = 400 kHz;

Tamb = −40 to +125 °C

fSCL = 400 kHz

Min Typ Max Unit

1.8 -

5.5 V

-

-

−40 -

820 µA

+125 °C

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