參數(shù)資料
型號: L320MH11NI
廠商: Advanced Micro Devices, Inc.
英文描述: 32 Megabit (2 M x 16-Bit/4 M x 8-Bit) MirrorBit⑩ 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control
中文描述: 32兆位(2米× 16位/ 4米× 8位)的MirrorBit⑩3.0伏特,只有統(tǒng)一閃存部門與VersatileI /輸出⑩控制
文件頁數(shù): 12/59頁
文件大?。?/td> 657K
代理商: L320MH11NI
10
Am29LV320MH/L
26517B4 January31,2007
D A T A S H E E T
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 loca-
tion. The register is a latch used to store the com-
mands, 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.
Table 1
lists the device bus operations, the in-
puts and control levels they require, and the resulting
output. The following subsections describe each of
these operations in further detail.
Table 1.
Device Bus Operations
Legend:
L = Logic Low = V
IL
, H = Logic High = V
IH
, V
ID
= 11.5–12.5
V, V
HH
= 11.5–12.5
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; A20:A-1 in byte mode. Sector addresses are A20:A15 in both modes.
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the
“Sector Group
Protection and Unprotection”
section.
3. If WP# = V
IL
, the first or last sector remains protected. If WP# = V
IH
, the first or last sector will be protected or unprotected as
determined by the method described in
“Sector Group Protection and Unprotection”
. All sectors are unprotected when shipped
from the factory (The Secured Silicon Sector may be factory protected depending on version ordered.)
4. D
IN
or D
OUT
as required by command sequence, data polling, or sector protect algorithm (see Figure 2).
Word/Byte Configuration
The BYTE# pin controls whether the device data I/O
pins operate in the byte or word configuration. If the
BYTE# pin is set at logic ‘1’, the device is in word con-
figuration, DQ0–DQ15 are active and controlled by
CE# and OE#.
If the BYTE# pin is set at logic ‘0’, the device is in byte
configuration, and only data I/O pins DQ0–DQ7 are
active and controlled by CE# and OE#. The data I/O
pins DQ8–DQ14 are tri-stated, and the DQ15 pin is
used as an input for the LSB (A-1) address function.
VersatileIO
(V
IO
) Control
The VersatileIO (V
IO
) control allows the host system
to set the voltage levels that the device generates and
tolerates on CE# and DQ I/Os to the same voltage
level that is asserted on V
IO
. See
“Ordering Informa-
tion” on page 9
for V
IO
options on this device.
Operation
CE#
OE#
WE#
RESET#
WP#
ACC
Addresses
(Note 2)
DQ0–
DQ7
DQ8–DQ15
BYTE#
= V
IH
BYTE#
= V
IL
Read
L
L
H
H
X
X
A
IN
D
OUT
D
OUT
DQ8–DQ14
= High-Z,
DQ15 = A-1
Write (Program/Erase)
L
H
L
H
(Note 3)
X
A
IN
(Note 4) (Note 4)
Accelerated Program
L
H
L
H
(Note 3)
V
HH
A
IN
(Note 4) (Note 4)
Standby
V
CC
±
0.3 V
X
X
V
CC
±
0.3 V
X
H
X
High-Z
High-Z
High-Z
Output Disable
L
H
H
H
X
X
X
High-Z
High-Z
High-Z
Reset
X
X
X
L
X
X
X
High-Z
High-Z
High-Z
Sector Group Protect
(Note 2)
L
H
L
V
ID
H
X
SA, A6 =L,
A3=L, A2=L,
A1=H, A0=L
(Note 4)
X
X
Sector Group Unprotect
(Note 2)
L
H
L
V
ID
H
X
SA, A6=H,
A3=L, A2=L,
A1=H, A0=L
(Note 4)
X
X
Temporary Sector Group
Unprotect
X
X
X
V
ID
H
X
A
IN
(Note 4) (Note 4)
High-Z
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