Philips PCF8593 Low Power Clock Calendar Data Sheet
Summary
Product specification datasheet (March 1997) for the Philips PCF8593 low-power CMOS clock/calendar IC with I2C-bus interface. Features: I2C operating supply 2.5-6.0V, clock operating voltage 1.0-6.0V (0 to 70°C), data retention voltage down to 1.0V, 8 bytes scratchpad RAM (when alarm not used), selectable 32.768 kHz or 50 Hz time base, 24-hour or 12-hour format, programmable alarm/timer/interrupt functions, and event counter mode. Functional description covers counter function modes (clock/calen
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INTEGRATED CIRCUITS
DATA SHEET
PCF8593 Low power clock/calendar
Product specification Mar
Supersedes data of July 1994 File under Integrated Circuits, IC12
Page Summary Contents For Philips PCF8593 Low Power Clock Calendar Data Sheet
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INTEGRATED CIRCUITS DATA SHEET PCF8593 Low power clock/calendar Product specification Mar Supersedes data of July 1994 File under Integrated Circuits, IC12
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 CONTENTS LIMITING VALUES HANDLING FEATURES DC CHARACTERISTICS GENERAL DESCRIPTION AC CHARACTERISTICS QUICK REFERENCE DATA ...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 FEATURES GENERAL DESCRIPTION I2C-bus interface operating supply voltage: 2.5 to 6.0 The PCF8593 is a CMOS clock/calendar c...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 5 BLOCK DIAGRAM handbook, full pagewidth OSCI DIVIDER 100 Hz OSCILLATOR 32.768 k Hz OSCO 100 : 128 control/status INT hund...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 FUNCTIONAL DESCRIPTION a second, seconds, minutes, hours or days. Days are counted when an alarm is not programmed. The PC...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth MSB LSB memory location 00 timer flag (50% duty factor seconds flag if alarm enable bit is 0) ala...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth control/status control/status hundredths of a second 1/10 s 1/100 s seconds 10 s 1 s minutes 10 m...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth MSB LSB memory location 04 (hours counter) unit hours BCD ten hours (0 to 12 binary) AM/PM flag: ...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 Table 1 Cycle length of the time counters, clock modes. CONTENTS OF THE UNIT COUNTING CYCLE CARRY TO NEXT UNIT MONTH COUNT...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth MSB LSB memory location 08 timer function : 000 no timer 001 hundredths of a second 010 seconds 0...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth MSB LSB memory location 0E (alarm weekday/month) weekday 0 enabled when set weekday 1 enabled whe...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth MSB LSB memory location 08 timer function : 000 no timer 001 units 010 100 011 10 000 100 1 000 0...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth oscillator mode select counter CLOCK/CALENDAR control ALARM TIMER clock alarm timer timer alarm c...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 7.10 Oscillator and divider A 32.768 k Hz quartz crystal has to be connected to OSCI (pin 1) and OSCO (pin 2). A trimmer c...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 CHARACTERISTICS OF THE I2C-BUS The I2C-bus is for bidirectional, two-line communication between different ICs or modules. ...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 8.3 System configuration (see Fig.15) A device generating a message is a ‘transmitter’, a device receiving a message is th...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 I2C-BUS PROTOCOL 9.1 Addressing Before any data is transmitted on the I2C-bus, the device which should respond is addresse...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth acknowledgement acknowledgement acknowledgement acknowledgement from slave from slave from slave ...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 10 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT VDD su...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 SYMBOL PARAMETER CONDITIONS MIN. TYP.(1) MAX. UNIT Ci input capacitance note p F OSCI and RESET ILI input leakage current ...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 13 AC CHARACTERISTICS VDD 2.5 to 6.0 V; VSS V; Tamb −40 to +85 °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 handbook, full pagewidth START BIT 7 BIT 6 BIT 0 ACKNOWLEDGE STOP PROTOCOL CONDITION MSB (A6) LSB (A) CONDITION SU;STA LOW...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 APPLICATION INFORMATION Procedure: Power-on 14.1 Quartz frequency adjustment Apply RESET 14.1.1 METHOD 1: FIXED OSCI CAPAC...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 se at in pl an PACKAGE OUTLINES DIP8: plastic dual in-line package; 8 leads (300 mil) SOT97-1 pin 1 index 10 mm scale DIME...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 SO8: plastic small outline package; 8 leads; body width 3.9 mm SOT96-1 (A )3 AA1 pin 1 index detail X 2.5 5 mm scale DIMEN...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 SOLDERING Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary 16.1 In...
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Philips Semiconductors Product specification Low power clock/calendar PCF8593 17 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for produc...
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Philips Semiconductors – a worldwide company Argentina: see South America Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB, Tel. +31 82785, Fax. +31 Australia: 34 Waterloo Road, NORTH RYDE, NSW...
Manual Details
| Brand | Philips |
|---|---|
| Pages | 28 |
| File Size | 139.79 KB |
| Published | June 15, 2026 |
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Frequently Asked Questions
What is the operating voltage for the I²C-bus interface?
The supply voltage must be between 2.5 to 6.0 V when active on the I²C-bus.
Does this chip have internal memory or registers?
Yes, it features sixteen 8-bit registers with an automatically incrementing word address register (00 to FF).
What kind of oscillator frequency can the PCF8593 support?
It supports a 32.768 kHz time base or 50 Hz operation.
How is mechanical reset handled?
There is an external RESET input (Pin 3) which is active LOW to reset the I²C interface.