PCA8581P datasheet(3/20 Pages) PHILIPS

3 / 20 page

1997 Apr 02

Philips Semiconductors

Product speciﬁcation

128

× 8-bit EEPROM with I2C-bus interface

PCA8581; PCA8581C

FEATURES

• Operating supply voltage:

– 4.5 to 5.5 V (PCA8581)

– 2.5 to 6.0 V (PCA8581C)

• Integrated voltage multiplier and timer for writing

(no external components required)

• Automatic erase before write

• Low standby current; maximum 10 µA

• 8-byte page write mode

• Serial input/output bus (I2C-bus)

• Address by 3 hardware address pins

• Automatic word address incrementing

• Designed for minimum 10000 write cycles per byte

• 10 years minimum non-volatile data retention

• Infinite number of read cycles

• Pin and address compatibility to PCF8570C and

PCF8582

• Operating ambient temperature: −25 to +85 °C.

GENERAL DESCRIPTION

The PCA8581 and PCA8581C are low power CMOS

EEPROMs with standard and wide operating voltages:

4.5 to 5.5 V (PCA8581)

2.5 to 6.0 V (PCA8581C).

In the following text, the generic term ‘PCA8581’ is used to

refer to both types in all packages except when otherwise

specified.

The PCA8581 is organized as 128 words of 8-bytes.

Addresses and data are transferred serially via a two-line

bidirectional bus (I2C-bus). The built-in word address

read data byte. All bytes can be read in a single operation.

Up to 8 bytes can be written in one operation, reducing the

total write time per byte. Three address pins, A0, A1 and

A2 are used to define the hardware address, allowing the

use of up to 8 devices connected to the bus without

additional hardware.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

VDD

supply voltage

PCA8581

4.5

5.5

PCA8581C

2.5

6.0

IDD

supply current (standby)

fSCL = 0 Hz

−

µA

Tamb

operating ambient temperature

−25

+85

°C

Tstg

storage temperature

without EEPROM retention

−65

+150

°C

with EEPROM retention

−65

+85

°C

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCA8581P

DIP8

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

SOT97-1

PCA8581CP

DIP8

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

SOT97-1

PCA8581T

SO8

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

SOT96-1

PCA8581CT

SO8

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

SOT96-1

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