W19B320STT9B
| Model | W19B320STT9B |
| Description | Flash, 2MX16, 90ns, PDSO48, TSOP-48 |
| PDF file | Total 52 pages (File size: 2M) |
| Chip Manufacturer | WINBOND |
W19B(L)320ST/B
7. TABLE OF OPERATION MODES
7.1 Device Bus Operations
MODE
Read
Write
Accelerated Program
Standby
Output Disable
Reset
Sector Protect (note2)
Sector Unprotect (note2)
Temporary Sector
Unprotect
#CE
L
L
L
V
DD
±
0.3V
L
X
L
L
X
#OE
L
H
H
X
H
X
H
H
X
#WE #RESET #WP/ACC
H
L
L
X
H
X
L
L
X
H
H
H
V
DD
±
0.3V
H
L
V
ID
V
ID
V
ID
L/H
(Note3)
V
HH
H
L/H
L/H
L/H
(Note3)
(Note3)
ADDRESSES
(Note2)
A
IN
A
IN
A
IN
X
X
X
SA, A6 = L,
A1 = H, A0 = L
SA, A6 = H,
A1 = H, A0 = L
A
IN
DQ0-DQ7
D
OUT
(Note 4)
(Note 4)
High-Z
High-Z
High-Z
(Note 4)
(Note 4)
(Note 4)
DQ8-DQ15
#BYTE =V
IH
#BYTE =V
IL
D
OUT
(Note 4)
(Note 4)
High-Z
High-Z
High-Z
X
X
(Note 4)
DQ8-DQ14
= High-Z,
DQ15=A-1
High-Z
High-Z
High-Z
X
X
High-Z
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, V
ID
= 8.5-12.5V, V
HH
= 9.0
±
0.5V, X = Don’t Care, SA = Sector Address, A
IN
= Address In, D
IN
= Data In, D
OUT
= Data Out
Notes
:
1.
2.
3.
Addresses are A20:A0 in word mode (#BYTE = V
IH
), A20: A-1 in byte mode (#BYTE = V
IL
).
The sector protect and sector unprotect functions may also be implemented via programming equipment. See the”
Sector/Sector Block Protection and Unprotect ion” section.
If #WP/ACC = V
IL
, the two outermost boot sectors remain protected. If #WP/ACC = V
IH
, the two outermost boot sector
protection depends on whether they were last protected or unprotected using the method described in “Sector/Sector
Block Protection and Unprotect ion”. If #WP/ACC = V
HH
, all sectors will be unprotected.
D
IN
or D
OUT
as required by command sequence, data polling, or sector protection algorithm.
4.
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