1.

General description

consumption. Addresses and data are transferred serially via the two-line bidirectional

or read data byte. The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM

are used for the clock, calendar, and counter functions. The next 8 bytes can be

programmed as alarm registers or used as free RAM space.

2.

Features and benefits

Clock operating supply voltage 1.0 V to 6.0 V at 0

°Cto+70 °C

8 bytes scratchpad RAM (when alarm not used)

Data retention voltage: 1.0 V to 6.0 V

Clock function with four year calendar

Universal timer with alarm and overflow indication

24 hour or 12 hour format

32.768 kHz or 50 Hz time base

Automatic word address incrementing

Programmable alarm, timer, and interrupt function

Space-saving SO8 package available

Slave addresses: A3h for reading, A2h for writing

3.

Ordering information

PCF8593

Low power clock and calendar

Rev. 04 — 6 October 2010

Product data sheet

1.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 14.

Table 1.

Ordering information

Type number

Package

Name

Description

Version

PCF8593P

DIP8

plastic dual in-line package; 8 leads (300 mil)

SOT97-1

PCF8593T

SO8

plastic small outline package; 8 leads;

body width 3.9 mm

SOT96-1