MSM514260E Ver la hoja de datos (PDF) - Oki Electric Industry
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MSM514260E Datasheet PDF : 14 Pages
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BLOCK DIAGRAM
PEDD514260ESL-01
MSM514260E/ESL
RAS
LCAS
UCAS
A0 - A8
Timing
Generator
Column
9 Address
Buffers
WE
OE
I/O
Controller
I/O
Controller
9 Column Decoders
8
Output
Buffers
8
Input
8 Buffers 8
Internal
Address
Counter
Refresh
Control Clock
Row
9 Address 9 Row
Buffers
Deco-
ders
Word
Drivers
Sense Amplifiers
I/O
16 Selector 16
Memory
Cells
Input
8 Buffers 8
8
Output
Buffers
8
VCC
On Chip
VBB Generator
VSS
DQ1 - DQ8
DQ9 - DQ16
FUNCTION TABLE
RAS
H
L
L
L
L
L
L
L
L
Input Pin
LCAS UCAS WE
*
*
*
H
H
*
L
H
H
H
L
H
L
L
H
L
H
L
H
L
L
L
L
L
L
L
H
* : “H” or “L”
DQ Pin
OE
DQ1-DQ8 DQ9-DQ16
*
High-Z
High-Z
*
High-Z
High-Z
L
DOUT
High-Z
L
High-Z
DOUT
L
DOUT
DOUT
H
DIN
Don’t Care
H
Don’t Care
DIN
H
DIN
DIN
H
High-Z
High-Z
Function Mode
Standby
Refresh
Lower Byte Read
Upper Byte Read
Word Read
Lower Byte Write
Upper Byte Write
Word Write
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