HY29F400 Hynix Semiconductor, HY29F400 Datasheet - Page 31

• Manufacturer Part Number: HY29F400
• Description: 4 Megabit (512Kx8/256Kx16) 5 Volt-only Flash Memory
• Manufacturer: Hynix Semiconductor

AC CHARACTERISTICS
Notes:
1. The system may use CE# or OE# to toggle DQ[2] and DQ[6]. DQ[2] toggles only when read at an address within an
Sector Protect and Unprotect, Temporary Sector Unprotect
Rev. 5.2/May 01
Notes:
1. Not 100% tested.
DQ[6]
DQ[2]
J
RESET#
W E #
E
erase-suspended sector.
RY/BY#
P
D
a
E
0 or 5V
W E #
a r
C E #
C
m
V
ID
t e
Enter Automatic
t
t
t
t
t
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t
t
r e
W
W
O
t
V
t
t
t
V
R
C
VIDR
S
C
O
L
E
D I
d t
P
P
S
S
T
H
E
E
S
P
P
P
P
R
T
P
2
1
Erase
R
C
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T
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W
V
V
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h
E
D I
D I
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E
i r
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t
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#
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R S P
u
u
a
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Figure 22. Temporary Sector Unprotect Timings
s l
s l
y r
n
b
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o i t
o i t
p
p
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a
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W
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Erase
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p
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T
p
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d i
Figure 21. DQ[2] and DQ[6] Operation
T
o t
m i
m i
e
O
e
T
r o
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h t
h t
m i
o t
u
e
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o t
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p t
e
f
f
U
f
f
e
u
r o
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Suspend
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p t
Erase
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e T
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e t
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t c
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Suspend
p
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t c
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i t c
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t p
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Erase
R e a d
o
a l
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e v
y
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U
P
n
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n
o r
1
1
p
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e t
t c
e
e t
Enter Erase
t c
t c
Suspend
Program
a
t c
r o
d n
U
U
p n
p n
o r
o r
e t
e t
t c
t c
Suspend
Program
1
Erase
1
M
M
M
M
M
M
M
M
M
M
a
a
n i
n i
n i
n i
n i
n i
n i
n i
x
x
Suspend
-
Erase
R e a d
4
2
4
5
5
5
R e s u m e
S
Erase
p
-
t
VIDR
5
2
e
5
5
5
e
5
d
5
5
1
1
4
4
0
0
4
4
0
0
Erase
O
0
0
0
0
-
7
3
t p
7
0
0
0
o i
n
-
0 or 5V
HY29F400
9
3
9
0
5
Complete
0
Erase
U
m
µ
µ
µ
µ
µ
s n
s n
s n
s n
n
s
s
s
s
s
s
t i
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