© Koninklijke Philips Electronics N.V. 2003.

Printed in The Netherlands

All rights are reserved. Reproduction in whole or in part is prohibited without the prior

written consent of the copyright owner.

The information presented in this document does not form part of any quotation or

contract, is believed to be accurate and reliable and may be changed without notice. No

liability will be accepted by the publisher for any consequence of its use. Publication

thereof does not convey nor imply any license under patent- or other industrial or

intellectual property rights.

Date of release: 31 March 2003

Document order number: 9397 750 10695

Contents

Philips Semiconductors

PCA8565

Real time clock/calender

1

General description . . . . . . . . . . . . . . . . . . . . . . 1

2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

4

Quick reference data . . . . . . . . . . . . . . . . . . . . . 1

5

Ordering information . . . . . . . . . . . . . . . . . . . . . 2

6

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2

7

Pinning information . . . . . . . . . . . . . . . . . . . . . . 2

7.1

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

7.2

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3

8

Functional description . . . . . . . . . . . . . . . . . . . 3

8.1

Alarm function modes . . . . . . . . . . . . . . . . . . . . 4

8.2

Timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

8.3

CLKOUT output . . . . . . . . . . . . . . . . . . . . . . . . 4

8.4

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

8.5

Voltage-low detector . . . . . . . . . . . . . . . . . . . . . 4

8.6

Register organization . . . . . . . . . . . . . . . . . . . . 5

8.6.1

Control/status 1 register . . . . . . . . . . . . . . . . . . 6

8.6.2

Control/status 2 register . . . . . . . . . . . . . . . . . . 6

8.6.3

Time and date registers . . . . . . . . . . . . . . . . . . 7

8.6.4

Alarm registers . . . . . . . . . . . . . . . . . . . . . . . . . 8

8.6.5

CLOCKOUT control register . . . . . . . . . . . . . . . 9

8.6.6

Countdown timer. . . . . . . . . . . . . . . . . . . . . . . . 9

8.7

EXT_CLK test mode . . . . . . . . . . . . . . . . . . . . 10

8.8

Power-On Reset (POR) override . . . . . . . . . . 11

9

Characteristics of the I2C-bus. . . . . . . . . . . . . 11

9.1

Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

9.2

Start and stop conditions . . . . . . . . . . . . . . . . 12

9.3

System configuration . . . . . . . . . . . . . . . . . . . 12

9.4

Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 12

9.5

I2C-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 13

9.5.1

Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

9.5.2

Clock/calendar read/write cycles . . . . . . . . . . 14

10

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 15

11

Static characteristics. . . . . . . . . . . . . . . . . . . . 15

12

Dynamic characteristics . . . . . . . . . . . . . . . . . 17

13

Application information. . . . . . . . . . . . . . . . . . 19

13.1

Quartz frequency adjustment . . . . . . . . . . . . . 20

13.1.1

Method 1: fixed OSCI capacitor . . . . . . . . . . . 20

13.1.2

Method 2: OSCI trimmer. . . . . . . . . . . . . . . . . 20

13.1.3

Method 3: OSCO output . . . . . . . . . . . . . . . . . 20

14

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 21

15

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

15.1

Introduction to soldering surface mount

packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

15.2

Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 22

15.3

Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 22

15.4

Manual soldering . . . . . . . . . . . . . . . . . . . . . . 23

15.5

Package related soldering information . . . . . . 23

16

Revision history . . . . . . . . . . . . . . . . . . . . . . . 24

17

Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 25

18

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

19

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

20

Licenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25