Datasheet > 存储 > EEPROM> X25021PI

X25021PI

更新时间： 2024-01-02 09:45:08

品牌	Logo	应用领域
XICOR		内存集成电路光电二极管可编程只读存储器电动程控只读存储器电可擦编程只读存储器时钟
页数	文件大小	规格书
14页	63K
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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X25021PI 数据手册

X25021

256 x 8 Bit

SPI Serial E²PROM with Block Lock^TMProtection

FEATURES

DESCRIPTION

The X25021 is a CMOS 2048-bit serial E²PROM, inter-

nallyorganizedas256x8. TheX25021featuresaSerial

Peripheral Interface (SPI) and software protocol allow-

ing operation on a simple three-wire bus. The bus

signalsareaclockinput(SCK)plusseparatedatain(SI)

and data out (SO) lines. Access to the device is con-

trolled through a chip select (CS) input, allowing any

number of devices to share the same bus.

• 1MHz Clock Rate

• SPI Modes (0,1 & 1,0)

• 256 X 8 Bits

—4 Byte Page Mode

• Low Power CMOS

—10µA Standby Current

—3mA Active Current

• 2.7V To 5.5V Power Supply

• Block Lock Protection

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

• Built-in Inadvertent Write Protection

—Power-Up/Power-Down protection circuitry

—Write Latch

The X25021 also features two additional inputs that

provide the end user with added flexibility. By asserting

the HOLD input, the X25021 will ignore transitions on its

inputs, thus allowing the host to service higher priority

interrupts.TheWPinputcanbeusedasahardwireinput

totheX25021disablingallwriteattempts,thusproviding

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

The X25021 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.

—Endurance: 100,000 cycles per byte

—Data Retention: 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

COMMAND

DECODE

AND

CONTROL

LOGIC

SCK

HOLD

WRITE

CONTROL

AND

TIMING

LOGIC

Y DECODE

DATA REGISTER

6615 FHD F01

Characteristics subject to change without notice

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

6615-1.5 6/10/96 T3/C1/D0 NS

12 3 4 5 6 7...14

中文翻译

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与X25021PI相关器件

型号	品牌	获取价格	描述	数据表
X25021PI-2.7	XICOR	获取价格	SPI Serial E2PROM with Block LockTM Protection
X25021PI-3	XICOR	获取价格	SPI Serial E2PROM with Block LockTM Protection
X25021PM	XICOR	获取价格	EEPROM, 256X8, Serial, CMOS, PDIP8, MINI, PLASTIC, DIP-8
X25021PM-2.7	XICOR	获取价格	EEPROM, 256X8, Serial, CMOS, PDIP8, MINI, PLASTIC, DIP-8
X25021PM-3	XICOR	获取价格	EEPROM, 256X8, Serial, CMOS, PDIP8, MINI, PLASTIC, DIP-8
X25021S	XICOR	获取价格	SPI Serial E2PROM with Block LockTM Protection
X25021S-2.7	XICOR	获取价格	SPI Serial E2PROM with Block LockTM Protection
X25021S-2.7T1	XICOR	获取价格	EEPROM, 256X8, Serial, CMOS, PDSO8, PLASTIC, SOIC-8
X25021S-3	XICOR	获取价格	SPI Serial E2PROM with Block LockTM Protection
X25021S-3T1	XICOR	获取价格	EEPROM, 256X8, Serial, CMOS, PDSO8, PLASTIC, SOIC-8

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