24LC174| Datasheet

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Obsolete Device

24LC174
16K 2.5V Cascadable I2CTM Serial EEPROM with OTP Security Page
FEATURES
Single supply with operation down to 2.5V 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 (2.5V) 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 temperature ranges: - Commercial (C): 0 C to +70 C - Industrial (I): -40 to +85

PACKAGE TYPES
PDIP A0 A1 A2 VSS 1 24LC174 2 3 4 6 7 8 9 VCC WP SCL SDA

8-lead SOIC

A0 A1 A2 VSS

1 2 3 4
24LC174

6 7 8 9

VCC WP SCL SDA

BLOCK DIAGRAM

A0

A1

A2

WP

HV GENERATOR

DESCRIPTION
The Microchip Technology Inc. 24LC174 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 2.5 volts with standby and active currents of only 5 uA and 1 mA respectively. The 24LC174 also has a page-write capability for up to 16 bytes of data. The 24LC174 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.

DS21101H-page 1

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24LC174 DATASHEET