Characteristics

PCF8523

PCF2123

PCF85(1)63

PCA21125

PCA8565

Interface

SPI

SPI

Temperature range

-40º to +85 °C

-40º to +85 ºC

-40 to +85 °C

-40 to +125 °C

-40 to +125 °C

Supply voltage V

1.2 to 5.5 V

1.1 V to 5.5 V

1.0 to 5.5 V

1.3 to 5.5 V

1.0 to 5.5 V

Supply voltage V

1.6 to 5.5 V

1.6 V to 5.5 V

1.8 to 5.5 V

1.6 to 5.5 V

1.8 to 5.5 V

Supply current at V

100 nA

100 nA

270 nA

640 nA

600 nA

Electronic tuning

yes

yes

no

no

no

Type

Package tape and reel

Type

Version

PCF8523T/1

SO8, plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

1

PCF8523TS/1

TSSOP14, plastic thin shrink small outline package; 14 leads; body width 4.4 mm

SOT402-1

1

PCF8523TK/1

HVSON8, plastic thermal enhanced very thin small outline package; no leads; 8 terminals; 4 x

4 x 0.85 mm

SOT909-1

1

PCF2123TS/1

TSSOP14, plastic thin shrink small outline package, 14 leads; body width 4.4 mm

SOT402-1

1

PCF2123BS/1

HVQFN16, plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body

3 x 3 x 0.85 mm

SOT758-1

1

PCF2123U/10AA/1

Bare die, die thickness 200 µm

-

1

PCF2123U/12AA/1

Bare die with gold bumps, die thickness 200 µm

-

1

PCF2123U/12HA/1

Bare die with gold bumps, die thickness 150 µm

-

1

PCF8523U/12AA/1

Bare die with gold bumps, die thickness 200 µm

-

1

PCF8523 block diagram

PCF2123 block diagram

Selection guide

Ordering Information

The calendar functions track year, month, weekday, and day

with built-in Leap Year correction. The programmable alarm and

timer function gives the option of generating a wake-up signal

on an interrupt pin.

In the PCF2123, the Watchdog timer can be used to wake

a microcontroller from hibernation mode or monitor

microcontroller tasks independently.

www.nxp.com

Date of release: March 2011

Document order number : 9397 750 17076

Printed in the Netherlands

© 2011 NXP Semiconductors N.V.

All rights 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.