Datasheet > X25020DG

X25020DG

更新时间： 2024-10-03 03:15:27

品牌	Logo	应用领域
ICMIC		可编程只读存储器
页数	文件大小	规格书
14页	120K
描述
SPI Serial E2PROM with Block LockTM Protection

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中文翻译

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数据手册

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X25020DG 数据手册

ICmic

256 x 8 Bit

This X25020 device has been acquired by

IC MICROSYSTEMS from Xicor, Inc.

IC MICROSYSTEMS

X25020

SPI Serial E²PROM with Block Lock^TMProtection

FEATURES

DESCRIPTION

The X25020 is a CMOS 2048-bit serial E²PROM, internally

organized as 256 x 8. The X25020 features a serial

•1MHz Clock Rate

•SPI Modes (0,0 & 1,1)

•256 X 8 Bits

—4 Byte Page Mode

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

•Low Power CMOS

—10µA Standby Current

—3mA Active Write Current

•2.7V To 5.5V Power Supply

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

same bus.

•Block Lock Protection

—Protect 1/4, 1/2 or all of E²PROM Array

•Built-in Inadvertent Write Protection

The X25020 also features two additional inputs that

provide the end user with added flexibility. By asserting

the HOLD input, the X25020 will ignore transitions on its

inputs, thus allowing the host to service higher priority

—Power-Up/Power-Down protection circuitry

—Write Latch

interrupts. The WP input can be used as a hardwire input to

the X25020 disabling all write attempts, thus providing a

mechanism for limiting end user capability of altering the

memory.

—Write Protect Pin

•Self-Timed Write Cycle

—5ms Write Cycle Time (Typical)

•High Reliability

—Endurance: 100,000 cycles per byte

—Data Retention: 100 Years

The X25020 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.

—ESD protection: 2000V on all pins

•8-Lead PDlP Package

•8-Lead SOIC Package

FUNCTIONAL DIAGRAM

WRITE

PROTECT

LOGIC

STATUS

X DECODE

LOGIC

256 BYTE

ARRAY

16 X 32

32 X 32

SCK

COMMAND

DECODE

AND

CONTROL

LOGIC

HOLD

WRITE

CONTROL

AND

TIMING

LOGIC

Y DECODE

DATA REGISTER

3834 FHD F01

™ ™

Direct Write and Block Lock Protection is a trademark of Xicor, Inc.

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

3834-1.8 6/10/96 T3/C1/D0 NS

Characteristics subject to change without notice

12 3 4 5 6 7...14

中文翻译

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