WE512K16-XG4X
White Electronic Designs
DATA POLLING
The module offers a data polling feature which allows a
faster method of writing to the device. Figure 6 shows the
timing diagram for this function. During a word or page
write cycle, an attempted read of the last word written will
result in the complement of the written data on I/O7 and
I/O15. 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.
DATA POLLING CHARACTERISTICS
VCC = 5.0V, VSS = 0V, -55°C ≤ TA ≤ +125°C
Parameter
Symbol
tDH
Min
10
Max
Unit
ns
Data Hold Time
OE# Hold Time
OE# To Output Valid
Write Recovery Time
tOEH
tOE
10
ns
55
ns
tWR
0
ns
FIGURE 6 – DATA POLLING WAVEFORM
WE1-4
CS1-4
#
#
OE#
I/O7
ADDRESS
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
April 1999
Rev. 2
6
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
