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参数资料
| 型号： | PM49FL002T-33JC |
| 厂商： | PMC-Sierra, Inc. |
| 英文描述： | 2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| 中文描述： | 2兆位/ 4兆位3.3伏，只固件集线器/ LPC快闪记忆体 |
| 文件页数： | 26/46页 |
| 文件大小： | 208K |
| 代理商： | PM49FL002T-33JC |
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Programmable Microelectronics Corp.
Issue Date: December, 2003 Rev: 1.4
26
PMC
Pm49FL002 / 004
A/A MUX MODE OPERATION
A/A MUX MODE READ/WRITE OPERATION
The Pm49FL002/004 offers a Address/Address Multi-
plexed (A/A Mux) mode for off-system operation, typi-
cally on an EPROM Programmer, similar to a traditional
Flash memory except the address input is multiplexed.
In the A/A Mux mode, the programmer must drive the
OE# pin to low (V
IL
) for read or WE# pins to low for write
operation. The devices have no Chip Enable (CE#) pin
for chip selection and activation as traditional Flash
memory. The R/C#, OE# and WE# pins are used to ac-
tivate the device and control the power. The 11 multiplex
address pins - A[10:0] and a R/C# pin are used to load
the row and column addresses for the target memory
location. The row addresses (internal address A10 - A0)
Notes:
1. X can be V
IL
or V
IH
.
2. Refer to Table 1 for the Manufacturer ID and Device ID of devices.
Table 10. A/A Mux Mode Bus Operation Modes
e
d
o
M
#
T
S
R
#
E
O
#
E
W
s
s
e
r
d
d
A
O
/
d
a
e
R
V
H
V
L
V
H
X
)
D
T
U
O
e
W
V
H
V
H
V
L
X
D
N
y
b
d
n
a
S
V
H
V
H
V
H
X
Z
h
g
H
e
a
s
D
t
p
O
V
H
V
H
X
X
Z
h
g
H
t
s
e
R
V
L
X
X
X
Z
h
g
H
n
o
c
e
d
u
d
o
P
V
H
V
L
V
H
=
V
1
=
d
=
2
0
n
0
A
A
a
A
-
,
2
A
,
X
V
=
1
A
L
L
V
=
1
A
H
I
V
,
H
I
D
I
a
n
a
M
)
,
X
=
=
1
A
2
,
A
-
V
2
=
A
1
A
L
V
0
H
I
D
I
e
c
e
D
)
are latched on the falling edge of R/C# pin. The column
addresses (internal address A21 - A11) are latched on
the rising edge of R/C# pin. The Pm49FL002 uses A17
- A0 internally to decode and access the 256 Kbytes
memory space. The Pm49FL004 use A18 - A0 respec-
tively.
During a read operation, the OE# signal is used to con-
trol the output of data to the 8 I/O pins - I/O[7:0]. During
a write operation, the WE# signal is used to latch the
input data from I/O[7:0]. See Table 10 for Bus Operation
Modes.
相关PDF资料 |
PDF描述 |
|---|---|
| PM49FL002T-33VC | 2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL004 | 2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL004T-33JC | 2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL004T-33JCE | 2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL004T-33VC | 2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PM49FL002T-33JCE | 制造商:PMC 制造商全称:PMC 功能描述:2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL002T-33VC | 制造商:PMC 制造商全称:PMC 功能描述:2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL002T-33VCE | 制造商:PMC 制造商全称:PMC 功能描述:2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL004 | 制造商:PMC 制造商全称:PMC 功能描述:2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
| PM49FL004T-33JC | 制造商:PMC 制造商全称:PMC 功能描述:2 Mbit / 4 Mbit 3.3 Volt-only Firmware Hub/LPC Flash Memory |
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