V53C16256SH Ver la hoja de datos (PDF) - Mosel Vitelic, Corp
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V53C16256SH Datasheet PDF : 19 Pages
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MOSEL VITELIC
V53C16256SH
Truth Table
Function
Standby
Read: Word
Read: Lower Byte
RAS LCAS UCAS WE
H
H
H
X
L
L
L
H
L
L
H
H
Read: Upper Byte
L
H
L
H
Write: Word (Early-Write)
Write: Lower Byte (Early)
L
L
L
L
L
L
H
L
Read: Upper Byte (Early)
L
H
L
L
Read-Write
L
L
L
H→L
Fast Page-Mode Read
L
H→L H→L
H
Fast Page-Mode Write
L
H→L H→L
L
Fast Page-Mode Read-Write
L
H→L H→L H→L
Hidden Refresh Read
L→H→L L
L
H
RAS-Only Refresh
L
H
H
X
CBR Refresh
H→L
L
L
X
Self Refresh
H→L
H
H
H
Notes:
1. Byte Write cycles LCAS or UCAS active.
2. Byte Read cycles LCAS or UCAS active.
3. Only one of the two CAS must be active (LCAS or UCAS).
OE
X
L
L
L
X
X
X
L→H
L
X
L→H
L
X
X
H
ADDRESS I/O
X
High-Z
ROW/COL Data Out
ROW/COL Lower Byte, Data-Out
Upper Byte, High-Z
ROW/COL Lower Byte, High-Z
Upper Byte, Data-Out
ROW/COL Data-In
ROW/COL Lower Byte, Data-In
Upper Byte, High-Z
ROW/COL Lower Byte, High-Z
Upper Byte, Data-In
ROW/COL Data-Out, Data-In
COL
Data-Out
COL
Data-In
COL
Data-Out, Data-In
ROW/COL Data-Out
ROW
High-Z
High-Z
High-Z
Notes
1, 2
2
2
1, 2
2
3
V53C16256SH Rev. 0.1 December 1998
8
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