WMF128K8-XXX5
White Electronic Designs
AC CHARACTERISTICS – WRITE/ERASE/PROGRAM OPERATIONS, WE# CONTROLLED
VCC = 5.0V, VSS = 0V, -55°C ≤ TA ≤ +125°C
-50
-60
-70
-90
-120
-150
Parameter
Symbol
Unit
Min Max Min Max Min Max Min Max Min Max Min Max
Write Cycle Time
tAVAV tWC
tELWL tCS
tWLWH tWP
tAVWH tAS
tDVWH tDS
tWHDX tDH
tWHAX tAH
tWHEH tCH
tWHWL tWPH
50
0
25
0
25
0
40
0
20
14
2.2
0
60
0
30
0
30
0
45
0
20
14
2.2
0
70
0
35
0
30
0
45
0
20
14
2.2
0
90
0
45
0
45
0
45
0
20
14
2.2
0
120
0
50
0
50
0
50
0
20
14
2.2
0
150
0
50
0
50
0
50
0
20
14
2.2
0
ns
ns
ns
ns
ns
ns
ns
ns
Chip Select Setup Time
Write Enable Pulse Width
Address Setup Time
Data Setup Time
Data Hold Time
Address Hold Time
Chip Select Hold Time
Write Enable Pulse Width High
Duration of Byte Programming Operation (min) tWHWH1
Sector Erase Time
Read Recovery Time before Write
ns
µs
tWHWH2
tGHWL
60
60
60
60
60
60 sec
ms
VCC Set-up Time
tVCS
50
50
50
50
50
50
µs
Chip Programming Time
Output Enable Setup Time
Output Enable Hold Time (1)
12.5
12.5
12.5
12.5
12.5
12.5 sec
ns
tOES
tOEH
0
10
0
10
0
10
0
10
0
10
0
10
ns
NOTES:
1. For Toggle and Data# Polling.
AC CHARACTERISTICS – READ ONLY OPERATIONS
VCC = 5.0V, VSS = 0V, -55°C ≤ TA ≤ +125°C
-50
-60
-70
-90
-120
-150
Unit
Parameter
Symbol
Min Max Min Max Min Max Min Max Min Max Min Max
Read Cycle Time
Address Access Time
Chip Select Access Time
OE# to Output Valid
Chip Select to Output High Z (1)
OE# High to Output High Z (1)
tAVAV tRC
tAVQV tACC
tELQV tCE
tGLQV tOE
tEHQZ tDF
tGHQZ tDF
tAXQX tOH
50
60
70
90
120
150
ns
150 ns
150 ns
55 ns
35 ns
35 ns
ns
50
50
25
20
20
60
60
30
20
20
70
70
35
20
20
90
90
40
25
25
120
120
50
30
30
Output Hold from Address, CS# or OE#
Change, whichever is First
0
0
0
0
0
0
NOTES:
1. Guaranteed by design, but not tested
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
April 2001
Rev. 5
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
