參數(shù)資料
型號(hào): MSM5416258A
廠商: OKI SEMICONDUCTOR CO., LTD.
英文描述: 262,144-Word×16-Bit DYNAMIC RAM(256K字×16位動(dòng)態(tài)RAM)
中文描述: 262,144字× 16位動(dòng)態(tài)隨機(jī)存儲(chǔ)器(256K字× 16位動(dòng)態(tài)內(nèi)存)
文件頁(yè)數(shù): 3/21頁(yè)
文件大小: 263K
代理商: MSM5416258A
3/21
Semiconductor
MSM5416258A
BLOCK DIAGRAM
Function Mode
RAS
H
L
L
L
L
L
L
L
L
Input Pin
UCAS
*
H
LCAS
*
H
L
H
L
L
H
L
L
H
L
L
H
L
L
L
WE
*
H
H
H
L
L
L
H
OE
*
L
L
L
H
H
H
H
*
*
Lower Byte Read
Upper Byte Read
Word Read
Lower Byte Write
Upper Byte Write
Word Write
Refresh
Standby
DQ Pin
DQ0 - DQ7
High-Z
High-Z
D
OUT
High-Z
D
OUT
DQ8 - DQ15
High-Z
High-Z
High-Z
D
OUT
D
OUT
Don't Care
D
IN
D
IN
High-Z
D
IN
Don't Care
D
IN
High-Z
FUNCTION TABLE
* : "H" or "L"
Timing
Generator
RAS
UCAS
LCAS
Refresh
Control Clock
Column
Address
Buffers
Internal
Address
Counter
Row
Address
Buffers
Row
Deco-
ders
Word
Drivers
Memory
Cells
Sense Amplifiers
Column Decoders
9
9
A0 - A8
I/O
Controller
I/O
Controller
WE
16
I/O
Selector
Input
Buffers
Output
Buffers
Output
Buffers
Input
Buffers
16
8
8
8
8
8
8
8
8
DQ0 - DQ7
DQ8 - DQ15
On-chip
V
BB
Generator
V
CC
V
SS
OE
9
9
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