W19B(L)320ST/B
7. TABLE OF OPERATION MODES
7.1 Device Bus Operations
ADDRESSES
DQ8-DQ15
DQ0-DQ7
MODE
#CE
#OE #WE #RESET #WP/ACC
(Note2)
AIN
#BYTE =VIH #BYTE =VIL
Read
Write
L
L
L
L
H
H
H
L
L
H
H
H
L/H
(Note3)
VHH
DOUT
DOUT
DQ8-DQ14
= High-Z,
AIN
(Note 4)
(Note 4)
(Note 4)
(Note 4)
DQ15=A-1
Accelerated Program
AIN
VDD
VDD
Standby
X
X
H
X
High-Z
High-Z
High-Z
± 0.3V
± 0.3V
Output Disable
Reset
L
H
X
H
X
H
L
L/H
L/H
X
X
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
X
SA, A6 = L,
Sector Protect (note2)
L
L
H
H
X
L
L
VID
VID
VID
L/H
(Note 4)
(Note 4)
(Note 4)
X
X
X
X
A1 = H, A0 = L
SA, A6 = H,
Sector Unprotect (note2)
(Note3)
(Note3)
A1 = H, A0 = L
Temporary Sector
Unprotect
X
X
AIN
(Note 4)
High-Z
Legend: L = Logic Low = VIL, H = Logic High = VIH, VID = 8.5-12.5V, VHH = 9.0±0.5V, X = Don’t Care, SA = Sector Address, AIN
= Address In, DIN = Data In, DOUT = Data Out
Notes:
1. Addresses are A20:A0 in word mode (#BYTE = VIH), A20: A-1 in byte mode (#BYTE = VIL).
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the”
Sector/Sector Block Protection and Unprotect ion” section.
3. If #WP/ACC = VIL, the two outermost boot sectors remain protected. If #WP/ACC = VIH, 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 = VHH, all sectors will be unprotected.
4. DIN or DOUT as required by command sequence, data polling, or sector protection algorithm.
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