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W19B320AT/B
7. TABLE OF OPERATION MODES
7.1 Device Bus Operations
MODE
#CE
#OE
#WE
#RESET
#WP/ACC ADDRESSES DQ0-DQ7
DQ8-DQ15
#BYTE=V IH
#BYTE =V IL
Read
Write
Standby
Output Disable
Reset
Sector Protect
Sector Unprotect
Temporary
Sector Unprotect
L
L
V DD
± 0.3V
L
X
L
L
X
L
H
X
H
X
H
H
X
H
L
X
H
X
L
L
X
H
H
V DD ± 0.3V
H
L
V ID
V ID
V ID
L/H
(Note2)
H
L/H
L/H
L/H
(Note2)
(Note2)
A IN
A IN
X
X
X
SA, A6=L,
A1=H, A0=L
SA, A6=H,
A1=H, A0=L
A IN
D OUT
D IN
High-Z
High-Z
High-Z
D IN
D IN
D IN
D OUT
D IN
High-Z
High-Z
High-Z
X
X
D IN
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 ~ 12.5 V, V HH = 9.0 ± 0.5 V, X = Don’t Care, SA = Sector
Address, A IN = Address In, D IN = Data In, D OUT = Data Out.
Notes:
1.
2.
Addresses are A20:A0 in word mode (#BYTE = V IH ), A20: A-1 in byte mode (#BYTE = V IL ).
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.
7.2 AUTOSELECT Codes (High Voltage Method)
DESCRIPTION
A20 A11
#CE #OE #WE TO TO
A12 A10
A9
A8
TO
A7
A6
A5
TO
A4
A3
A2
A1
A0
DQ8 TO
DQ15
#BYTE #BYTE
DQ7
TO DQ0
= V IH = V IL
Manufacturer ID:
Winbond
V IL
V IL
V IH
BA
X
V ID
X
V IL
X
X
X
V IL
V IL
DDh
X
DAh
Read Cycle1 V IL
Read Cycle2 V IL
Read Cycle3 V IL
V IL
V IL
V IL
V IH
V IH
V IH
BA
BA
BA
X
X
X
V ID
V ID
V ID
X
X
X
V IL
V IL
V IL
X
X
X
V IL
V IH
V IH
V IL
V IH
V IH
V IL
V IH
V IH
V IH
V IL
V IH
22h
22h
22h
X
X
X
7Eh
0Ah
01h(Top)
00h(Bottom)
Sector Protection
Verification
V IL
V IL
V IH
SA
X
V ID
X
V IL
X
X
V IL
V IH
V IL
X
X
01h (protected)
00h
(unprotected)
82h
Security Indicator
Bit (DQ7)
V IL
V IL
V IH
BA
X
V ID
X
V IL
X
X
V IL
V IH
V IH
X
X
(factory locked)
02h
(not factory
locked)
Legend : BA= Bank Address, SA= Sector Address, X= Don't Care.
Publication Release Date: December 27, 2005
- 19 -
Revision A4
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