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24AA174| Datasheet

By datasheet - June 10th, 2008

24AA174| Datasheet

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Obsolete Device

24AA174
16K 1.8V Cascadable I2CTM Serial EEPROM with OTP Security Page
PACKAGE TYPES FEATURES
Single supply with operation down to 1.8V 16 bytes OTP Secure Memory Low power CMOS technology - 1 mA active current typical - 10 uA standby current typical at 5.5V - 5 uA standby current typical at 3.0V Organized as eight blocks of 256 bytes (8 x 256 x 8) 2-wire serial interface bus, I2C compatible Functional address inputs for cascading up to 8 devices Schmitt trigger, filtered inputs for noise suppression Output slope control to eliminate ground bounce 100 kHz (1.8V) and 400 kHz (5V) compatibility Self-timed write cycle (including auto-erase) Page-write buffer for up to 16 bytes 2 ms typical write cycle time for page-write Hardware write protect for entire memory Can be operated as a serial ROM Factory programming (QTP) available ESD protection > 4,000V 1,000,000 Erase/Write cycles guaranteed Data retention > 200 years 8 pin DIP, 8-lead SOIC packages Available for commercial temperature range - Commercial (C): 0 C to +70 C PDIP A0 A1 A2 VSS 1 24AA174 2 3 4 8 7 6 5 V
CC WP SCL SDA

8-lead SOIC

A0 A1 A2 VSS

1 24AA174 2 3 4

8 7 6 5

VCC WP SCL SDA

BLOCK DIAGRAM

A0

A1

A2

WP

HV GENERATOR

DESCRIPTION
The Microchip Technology Inc. 24AA174 is a cascadable 16K bit Electrically Erasable PROM. The device is organized as eight blocks of 256 x 8-bit memory with a 2-wire serial interface and provides a specially addressed OTP (one-time programmable) 16 byte security block. Low voltage design permits operation down to 1.8 volts (end-of-life voltage for most popular battery technologies) with standby and active currents of only 5 uA and 1 mA respectively. The 24AA174 also has a page-write capability for up to 16 bytes of data. The 24AA174 is available in the standard 8-pin DIP and 8-lead surface mount SOIC packages. The three select pins, A0, A1, and A2, function as chip select inputs and allow up to eight devices to share a common bus, for up to 128K bits total system EEPROM.

I/O CONTROL LOGIC

MEMORY CONTROL LOGIC

XDEC

EEPROM ARRAY (8 x 256 x 8) PAGE LATCHES

SDA

SCL YDEC

V CC V SS

SENSE AMP R/W CONTROL

I2C is a trademark of Philips Corporation.

2004 Microchip Technology Inc.

DS21102G-page 1


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