Datasheet > 5962-931552HYX

5962-931552HYX

更新时间： 2023-02-15 00:00:00

品牌	Logo	应用领域
玛居礼 - MERCURY		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
页数	文件大小	规格书
14页	1258K
描述
EEPROM

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5962-931552HYX 数据手册

WE512K8, WE256K8,

WE128K8-XCX

WRITE

WRITE CYCLE TIMING

Write operations are initiated when both CS# and WE# are low

and OE# is high. The EEPROM devices support both a CS# and

WE# controlled write cycle. The address is latched by the falling

edge of either CS# or WE#, whichever occurs last.

Figures 6 and 7 show the write cycle timing relationships. A write

cycle begins with address application, write enable and chip select.

Chip select is accomplished by placing the CS# line low. Write

enable consists of setting the WE line low. The write cycle begins

when the last of either CS# or WE# goes low.

The data is latched internally by the rising edge of either CS#

or WE#, whichever occurs first. A byte write operation will

automatically continue to completion.

The WE# line transition from high to low also initiates an internal

150μsec delay timer to permit page mode operation. Each

subsequent WE# transition from high to low that occurs before the

completion of the 150μsec time out will restart the timer from zero.

The operation of the timer is the same as a retriggerable one-shot.

AC WRITE CHARACTERISTICS

V_CC= 5.0V, V_SS= 0V, -55°C ≤ T_A≤ +125°C

512K x 8

256K x 8

128K x 8

Parameter

Symbol

Unit

Min

Max

Min

Max

Min

Max

Write Cycle Time, TYP = 6mS

Address Set-up Time

Write Pulse Width (WE# or CS#)

Chip Select Set-up Time

Address Hold Time (1)

Data Hold Time

t^WC

tAS

150

t^WP

t^CS

t^AH

125

t^DH

Chip Select Hold Time

Data Set-up Time

t^CH

tDS

100

Output Enable Set-up Time

Output Enable Hold Time

Write Pulse Width High

NOTES:

tOES

t^OEH

tWPH

1. A17 and A18 must remain valid through WE# and CS# low pulse, for 512K x 8.

A15, A16, and A17 must remain valid through WE# and CS# low pulse, for 256K x 8.

A15 and A16 must remain valid through WE# and CS# low pulse, for 128K x 8.

Microsemi Corporation reserves the right to change products or speciﬁcations without notice.

Rev. 4

Microsemi Corporation • (602) 437-1520 • www.microsemi.com

1...3 4 567 8 9...14

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