Microchip 34AA02 Handleiding

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 2007-2022

Microchip Technology Inc. and its subsidiaries

DS20002029G-page 1

34AA02/34LC02

Features

•Permanent and Resettable Software Write-Protect

for Lower Half of the Array (00h-7Fh)

•Single Supply with Operation Down to 1.7V

•Low-Power CMOS Technology:

-Read current: 1mA, typical

-Standby current: 100 nA, typical

•Two-Wire Serial Interface Bus, I2C Compatible

•Cascadable Up to Eight Devices

•Schmitt Trigger Inputs for Noise Suppression

•Output Slope Control to Eliminate Ground Bounce

•100 kHz and 400 kHz Compatibility

•1 MHz Clock for LC Versions

•Page Write Time: 5 ms, Maximum

•Self-Timed Erase/Write Cycle

•16-Byte Page Write Buffer

•ESD Protection > 4,000V

•Software Write Protection for Lower 128 Bytes

•Hardware Write Protection for Entire Array

•More than 1 Million Erase/Write Cycles

•Data Retention > 200 Years

•RoHS Compliant

•Available for Extended Temperature Ranges:

-Industrial (I): -40°C to +85°C

-Extended (E): -40°C to +125°C

•Automotive AEC-Q100 Qualified

Packages

•8-Lead MSOP, 8-Lead PDIP, 8-Lead SOIC,

6-Lead SOT-23, 8-Lead TDFN and 8-Lead

TSSOP

Description

The Microchip Technology Inc. 34XX02( )1is a 2-Kbit

Electrically Erasable PROM (EEPROM). This device

has two software write-protect features for the lower

half of the array, as well as an external pin that can be

used to write-protect the entire array. This allows the

system designer to protect none, half or all of the array,

depending on the application. The device is organized

as one block of 256 x 8-bit memory with a two-wire

serial interface. Its low-voltage design permits

operation down to 1.7V, with standby and active

currents of only 100 nA and 1 mA, respectively. The

34XX02 also has a page write capability for up to

16 bytes of data.

Package Types

Device Selection Table

Part NumberVCCRangeMax. Clock FrequencyTemp. RangesPackages

34AA021.7V-5.5V400 kHz( )1I, EMS, P. SN, OT, MNY, ST

34LC022.2V-5.5V1 MHzI, EMS, P. SN, OT, MNY, ST

Note 1:100 kHz for VCC <1.8V.

Note 1:34XX02 is used in this document as a

generic part number for the

34AA02/34LC02 devices.

A0

A1

A2

VSS

1

2

3

4

8

7

6

5

VCC

WP

SCL

SDA

MSOP/PDIP/SOIC/TSSOP

A0

A1

A2

V

SS

WP

SCL

SDA

V

CC

SOT-23

6

2

4 SDA

VCC

VSSA0

A1

5

3

1 SCL

TDFN

1

2

3

4

8

7

6

5

2-Kbit I2C Serial EEPROM Software Write-Protect

Product specificaties