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參數(shù)資料
| 型號： | S29AL016D70TAN013 |
| 廠商： | SPANSION LLC |
| 元件分類： | PROM |
| 英文描述： | 1M X 16 FLASH 3V PROM, 70 ns, PDSO48 |
| 封裝： | MO-142DDD, TSOP-48 |
| 文件頁數(shù)： | 6/55頁 |
| 文件大小： | 1809K |
| 代理商： | S29AL016D70TAN013 |
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14
S29AL016D
S29AL016D_00_A7 November 27, 2007
Da ta
Sh e e t
7.
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. Table 7.1 lists the device bus operations, the
inputs and control levels they require, and the resulting output. The following subsections describe each of
these operations in further detail.
Legend
L = Logic Low = VIL
H = Logic High = VIH
VID = 12.0 ± 0.5 V
X = Don’t Care
AIN = Address In
DIN = Data In
DOUT = Data Out
Notes
1. Addresses are A19:A0 in word mode (BYTE# = VIH), A19:A-1 in byte mode (BYTE# = VIL).
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See Sector Protection/
7.1
Word/Byte Configuration
The BYTE# pin controls whether the device data I/O pins DQ15–DQ0 operate in the byte or word
configuration. If the BYTE# pin is set at logic 1, the device is in word configuration, DQ15–DQ0 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.
Table 7.1 S29AL016D Device Bus Operations
Operation
CE#
OE#
WE#
RESET#
Addresses
DQ0–
DQ7
DQ8–DQ15
BYTE#
= VIH
BYTE#
= VIL
Read
L
H
AIN
DOUT
DQ8–DQ14 = High-Z,
DQ15 = A-1
Write
L
H
L
H
AIN
DIN
Standby
VCC ±
0.3 V
XX
VCC ±
0.3 V
X
High-Z
Output Disable
L
H
X
High-Z
Reset
X
L
X
High-Z
Sector Protect (Note 2)
LH
L
VID
Sector Address,
A6 = L, A1 = H,
A0 = L
DIN
XX
Sector Unprotect (Note 2)
LH
L
VID
Sector Address,
A6 = H, A1 = H,
A0 = L
DIN
XX
Temporary Sector
Unprotect
XX
X
VID
AIN
DIN
High-Z
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