Daewoo 20T1, 21Q2, 21Q1, 14T2, 21Q4, 14Q2, 20Q1, 14Q1, 21T2, 20Q3, 14T1 Features, PIN Symbol Description

24LC08B (EEPROM)

(1) Features
• Single supply with operation down to 2.5V	• Page-write buffer for up to 16 bytes
• Low power CMOS technology	• 2ms typical write cycle time for page-write
- 1mA active current typical	• Hardware write protect for entire memory
- 10 A standby current typical at 5.5V	• Can be operated as a serial ROM
- 5 A standby current typical at 3.0V	• Factory programming(QTP) available
• Organized as two or four blocks of 256 bytes	• ESD protection > 4,000V
(2x256x8) and (4x256x8)	• 1,000,000 ERASE/WRITE cycles(typical)
• Two wire serial interface bus, I2CTM compatible	• Data retention > 40 years
• Schmitt trigger, filtered inputs for noise suppression	• 8-pin DIP, 8-lead or 14-lead SOIC packages
• Output slope control to eliminate ground bounce	• Available for extended temperature ranges
• 100KHz(2.5V) and 400KHz(5V) compatibility	- Commercial : 0 C to +70 C
• Self-timed write cycle(including auto-erase)	-Industrial : -40 C to +85 C

(2)General Description

The Microchip Technology Inc. 24LC08B is a 8K-bit Electrically Erasable PROM.

The device is organized as four blocks of 256x9bit memory with a two wire serial interface. Low voltage

design permits operation down to 2.5 volts with standby and active currents of only 5A and 1mA respectively. The 24LC08B also has a page-write capability for up to 16 bytes of data.

The 24L08B is available in the standard 8-pin DIP surface mount 80IC packages.

(3)Block Diagram

	WP
I/O	MEMORY
CONTROL	CONTROL		XDEC
LOGIC		LOGIC
SDA SCL
VCC
VSS

HV GENERATOR

EEPROM ARRAY

(4X256X8)

PAGE LATCHES

YDEC

SENSE AMP

R/W CONTROL

(4) Pin Description

PIN	SYMBOL	DESCRIPTION
1-3	A0, A1, A2	Device Address lnputs
4	Vss	Ground
5	SDA	Serial Data/Address
6	SCL	Serial Clock
7	WP
8	Vcc	+5V Power supply

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