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| 型號： | A29DL324V |
| 廠商： | AMIC Technology Corporation |
| 英文描述： | 32 Megabit (4M x 8-Bit/2M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory |
| 中文描述： | 32兆位（4米× 8-Bit/2M x 16位），3.0伏的CMOS只，同時作業(yè)快閃記憶體 |
| 文件頁數(shù)： | 6/50頁 |
| 文件大小： | 771K |
| 代理商： | A29DL324V |
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A29DL32x Series
PRELIMINARY
(May, 2005, Version 0.0)
5
AMIC Technology, Corp.
DEVICE BUS OPERATIONS
This section describes the requirements and use of the
device bus operations, which are initiated through the
internal command register. The command register itself does
not occupy any addressable memory location. The register is
composed of latches that store the commands, along with
the address and data information needed to execute the
command. The contents of the register serve as inputs to the
internal state machine. The state machine outputs dictate the
function of the device. The appropriate device bus operations
table lists the inputs and control levels required, and the
resulting output. The following subsections describe each of
these operations in further detail.
Table 1. A29DL32x Device Bus Operations
I/O
8
- I/O
15
Operation
CE
OE
WE
RESET
WP
/ACC
A0 – A20
(Note 1)
I/O
0
- I/O
7
BYTE
=V
IH
D
OUT
BYTE
=V
IL
I/O
8
~I/O
15
=High-Z
Read
L
L
H
H
L/H
A
IN
D
OUT
Write
L
H
L
H
(Note 3)
A
IN
D
IN
D
IN
I/O
8
~I/O
14
=High-Z
I/O
15
=A-1
Standby
VCC
±
0.3 V
X
X
VCC
±
0.3 V
H
X
High-Z
High-Z
High-Z
Output Disable
L
H
H
H
L/H
X
High-Z
High-Z
High-Z
Reset
Sector Protect
(See Note 2)
X
X
X
L
L/H
X
High-Z
High-Z
High-Z
L
H
L
V
ID
L/H
SA, A6=L,
A1=H, A0=L
D
IN
X
X
Sector Unprotect
(See Note 2)
L
H
L
V
ID
(Note 3)
SA, A6=H,
A1=H, A0=L
D
IN
X
X
Temporary Sector
Unprotect
X
X
X
V
ID
(Note 3)
A
IN
D
IN
D
IN
High-Z
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, V
ID
= 8.5 -12.5V, 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. Addresses are A20:A0 in word mode (
BYTE
=V
IH
), A20: A-1 in byte mode (
BYTE
=V
IL
).
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the
“Sector/Sector Block Protection and Unprotection” section.
3. 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 Unprotection”. If
WP
/ACC = V
HH
all sectors will be unprotected.
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