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WE128K32N-150H1Q Datasheet(PDF) 4 Page - White Electronic Designs Corporation

Part # WE128K32N-150H1Q
Description  128Kx32 EEPROM MODULE, SMD 5962-94585
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Manufacturer  WEDC [White Electronic Designs Corporation]
Direct Link  http://www.whiteedc.com
Logo WEDC - White Electronic Designs Corporation

WE128K32N-150H1Q Datasheet(HTML) 4 Page - White Electronic Designs Corporation

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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
White Electronic Designs
WE128K32-XXX
March 2006
Rev. 10
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
WRITE
A write cycle is initiated when OE# is high and a low pulse
is on WE# or CS# with CS# or WE# low. The address
is latched on the falling edge of CS# or WE# whichever
occurs last. The data is latched by the rising edge of CS#
or WE#, whichever occurs first. A byte write operation will
automatically continue to completion.
write cycle timing
Figures 5 and 6 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 WE# line transition from high to low also initiates
an internal 150 µsec delay timer to permit page mode
operation. Each subsequent WE# transition from high to
low that occurs before the completion of the 150 µsec time
out will restart the timer from zero. The operation of the
timer is the same as a retriggerable one-shot.
AC WRITE CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Write Cycle Parameter
Symbol
Min
Max
Unit
Write Cycle Time, TYP = 6ms
tWC
10
ms
Address Set-up Time
tAS
0ns
Write Pulse Width (WE# or CS#)
tWP
100
ns
Chip Select Set-up Time
tCS
0ns
Address Hold Time
tAH
100
ns
Data Hold Time
tDH
10
ns
Chip Select Hold Time
tCSH
0ns
Data Set-up Time
tDS
50
ns
Output Enable Set-up Time
tOES
0ns
Output Enable Hold Time
tOEH
0ns
Write Pulse Width High
tWPH
50
ns


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