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參數(shù)資料
| 型號： | M5M5W816WG-10HI |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 8388608-BIT (524288-WORD BY 16-BIT) CMOS STATIC RAM |
| 中文描述： | 8388608位（524288字由16位）的CMOS靜態(tài)RAM |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 87K |
| 代理商： | M5M5W816WG-10HI |
MITSUBISHI ELECTRIC
M5M5W816WG -85L, 10L, 85H, 10H
-85LI, 10LI, 85HI, 10HI
1999.1.15
Ver. 0.1
8388608-BIT (524288-WORD BY 16-BIT) CMOS STATIC RAM
MITSUBISHI LSIs
PRELIMINARY
Some parametric limits are subject to change
2
FUNCTION
The M5M5W816WG is organized as 524288-words by 16-
bit. These devices operate on a single +1.8~2.7V power
supply, and are directly TTL compatible to both input and
output. Its fully static circuit needs no clocks and no refresh,
and makes it useful.
The operation mode are determined by a combination of
the device control inputs BC1 , BC2 , S1, S2 , W and OE.
Each mode is summarized in the function table.
A write operation is executed whenever the low level W
overlaps with the low level BC1 and/or BC2 and the low level
S1 and the high level S2. The address(A0~A18) must be set
up before the write cycle and must be stable during the entire
cycle.
A read operation is executed by setting W at a high level
and OE at a low level while BC1 and/or BC2 and S1 and S2
are in an active state(S1=L,S2=H).
When setting BC1 at the high level and other pins are in an
active stage , upper-byte are in a selectable mode in which
both reading and writing are enabled, and lower-byte are in a
non-selectable mode. And when setting BC2 at a high level
and other pins are in an active stage, lower-byte are in a
selectable mode and upper-byte are in a non-selectable
mode.
When setting BC1 and BC2 at a high level or S1 at a high level
or S2 at a low level, the chips are in a non-selectable mode in
which both reading and writing are disabled. In this mode, the
output stage is in a high-impedance state, allowing OR-tie with
other chips and memory expansion by BC1, BC2 and S1, S2.
The power supply current is reduced as low as 0.1μA(25°C,
typical), and the memory data can be held at +1V power supply,
enabling battery back-up operation during power failure or
power-down operation in the non-selected mode.
BLOCK DIAGRAM
MEMORY ARRAY
524288 WORDS
x 16 BITS
CLOCK
GENERATOR
A
0
A
1
A
17
A
18
S2
BC1
BC2
W
OE
DQ
8
DQ
1
DQ
16
DQ
9
-
Vcc
GND
S1
FUNCTION TABLE
Mode
Non selection
S2
L
W
X
H
X
X
H
X
H
High-Z
High-Z High-Z
Din
Dout
High-Z High-Z
High-Z
High-Z
BC1 BC2
X
OE
X
DQ1~8
High-Z
X
X
X
X
Non selection
Non selection
Write
DQ9~16
High-Z Standby
Icc
High-Z Standby
Standby
H
H
H
H
H
X
L
H
X
L
L
H
H
L
H
L
L
L
H
H
H
H
H
L
L
High-Z
High-Z
Active
Active
Active
Active
Active
Read
H
H
H
L
L
L
Active
Active
H
L
High-Z
Din
High-Z
Active
H
L
H
X
H
High-Z
H
L
Dout
H
L
L
Read
Dout
Active
L
Write
Din
H
High-Z
Write
Read
Din
Dout
S1
H
H
X
L
L
L
L
L
L
L
L
L
L
X
X
High-Z
X
X
Non selection
High-Z Standby
L
X
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