WSE128K16-35G2TC Просмотр технического описания (PDF) - White Electronic Designs => Micro Semi

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WSE128K16-35G2TC

128Kx16 SRAM/EEPROM MODULE

White Electronic Designs => Micro Semi 

White Electronic Designs

WSE128K16-XXX

PRELIMINARY

EEPROM DATA POLLING

The WSE128K16-XXX offers a data polling feature for

the EEPROM which allows a faster method of writing to

the device. Figure 11 shows the timing diagram for this

function. During a byte or page write cycle, an attempted

read of the last byte written will result in the complement

of the written data on D7 (for each chip.) Once the write

cycle has been completed, true data is valid on all outputs

and the next cycle may begin. Data polling may begin at

any time during the write cycle.

EEPROM DATA POLLING CHARACTERISTICS

VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C

Parameter

Data Hold Time

OE# Hold Time

OE# To Output Valid

Write Recovery Time

Symbol Min Max Unit

tDH

10

ns

tOEH

10

ns

tOE

55

ns

tWR

0

ns

FIGURE 10 – EEPROM DATA POLLING WAVEFORMS

EWE#1-2

ECS#1-2

OE#

tOEH

tDH

ED7

tOE

HIGH Z

tWR

ADDRESS

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

March 2005

Rev. 3

9

White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

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