28F008/800B3, 28F016/160B3, 28F320B3, 28F640B3
8.2
AC Write Characteristics
Table 19.
Write Operations—8-Mbit Density
Density
Product
3.0 V – 3.6 V
2.7 V – 3.6 V
Note
4,5
8 Mbit
90 ns
110 ns
100
#
Sym
Parameter
80
Unit
VCC
90
110
Min
Min
Min
Min
tPHWL
/
W1
W2
W3
W4
W5
W6
W7
W8
W9
RP# High Recovery to WE# (CE#) Going Low
CE# (WE#) Setup to WE# (CE#) Going Low
WE# (CE#) Pulse Width
150
150
0
150
150
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
tPHEL
tELWL
tWLEL
/
4,5
4,5
0
50
50
50
0
0
70
60
70
0
tWLWH
tELEH
/
60
50
60
0
70
60
70
0
tDVWH
tDVEH
/
/
/
/
/
Data Setup to WE# (CE#) Going High
Address Setup to WE# (CE#) Going High
CE# (WE#) Hold Time from WE# (CE#) High
Data Hold Time from WE# (CE#) High
Address Hold Time from WE# (CE#) High
WE# (CE#) Pulse Width High
2,4,5
2,4,5
4,5
tAVWH
tAVEH
tWHEH
tEHWH
tWHDX
tEHDX
2,4,5
2,4,5
2,4,5
0
0
0
0
tWHAX
tEHAX
0
0
0
0
tWHWL /
tEHEL
30
30
30
30
tVPWH
tVPEH
/
W10
W11
W12
VPP Setup to WE# (CE#) Going High
VPP Hold from Valid SRD
3,4,5
3,4
200
0
200
0
200
0
200
0
ns
ns
ns
tQVVL
tBHWH
tBHEH
/
WP# Setup to WE# (CE#) Going High
3,4
0
0
0
0
W13
tQVBL
WP# Hold from Valid SRD
3,4
3,4
0
0
0
0
ns
ns
W14
tWHGL
WE# High to OE# Going Low
30
30
30
30
Notes:
1.
Write pulse width (tWP) is defined from CE# or WE# going low (whichever goes low last) to CE# or WE# going high
(whichever goes high first). So tWP = tWLWH = tELEH = tWLEH = tELWH
.
Similarly, write pulse width high (tWPH) is defined from CE# or WE# going high (whichever goes high first) to CE# or WE#
going low (whichever goes low last). So tWPH = tWHWL = tEHEL = tWHEL = tEHWL
.
2.
3.
4.
Refer to Table 27 “Bus Operations(1)” on page 51 for valid AIN or DIN
Sampled, but not 100% tested.
.
See Figure 12 “AC Input/Output Reference Waveform” on page 46 for timing measurements and maximum allowable
input slew rate.
5.
See Figure 11 “Write Operations Waveform” on page 45.
Datasheet
Intel® Advanced Boot Block Flash Memory (B3)
Order Number: 290580, Revision: 020
18 Aug 2005
41
NUMONYX [ NUMONYX B.V ]
