X25C02PI datasheet(1/14 Pages) XICOR

Part #	X25C02PI

Description	SPI Serial E2PROM

PDF	14 Pages

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Manufacturer	XICOR [Xicor Inc.]

Direct Link	http://www.xicor.com

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X25C02

1

2K

X25C02

256 x 8 Bit

FEATURES

• 1MHz Clock Rate

• 256 X 8 Bits

—4 Byte Page Mode

• Low Power CMOS

—150

µA Standby Current

—2mA Active Current

• 5V Power Supply

• Built-in Inadvertent Write Protection

—Power-Up/Power-Down protection circuitry

—Write Latch

—Write Protect Pin

• Self-Timed Write Cycle

—5ms Write Cycle Time (Typical)

• High Reliability

—Endurance: 100,000 cycles per byte

—Data Retention: 100 Years

—ESD protection: 2000V on all pins

• Available Packages

—8-Lead MSOP

—8-Lead PDlP

—8-Lead SOIC

©Xicor, Inc. 1994, 1995, 1996 Patents Pending

Characteristics subject to change without notice

3843-1.6 6/10/96 T5/C1/D1 NS

DESCRIPTION

The X25C02 is a CMOS 2048-bit serial E2PROM, inter-

nally organized as 256 x 8. The X25C02 features a serial

interface and software protocol allowing operation on a

simple three-wire bus. The bus signals are a clock input

(SCK) plus separate data in (SI) and data out (SO) lines.

Access to the device is controlled through a chip select

(

CS) input, allowing any number of devices to share the

same bus.

The X25C02 also features two additional inputs that

provide the end user with added flexibility. By asserting

the

HOLD input, the X25C02 will ignore transitions on its

inputs, thus allowing the host to service higher priority

interrupts. The

WP input can be used as a hardwire input

to the X25C02 disabling all write attempts, thus provid-

ing a mechanism for limiting end user capability of

altering the memory.

The X25C02 utilizes Xicor’s proprietary Direct Write™

cell, providing a minimum endurance of 100,000 cycles

per byte and a minimum data retention of 100 years.

SPI Serial E2PROM

Direct Write™ is a trademark of Xicor, Inc.

FUNCTIONAL DIAGRAM

COMMAND

DECODE

AND

CONTROL

LOGIC

WRITE

CONTROL

AND

TIMING

LOGIC

SO

SI

SCK

CS

HOLD

WP

256 BYTE ARRAY

(64 X 32)

Y DECODE

DATA REGISTER

X

DECODE

LOGIC

64

48

3843 FHD F01

APPLICATION NOTES

A V AILABLE

AN9 • AN18 • AN31 • AN37 • AN40

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