MOSEL VITELIC
Truth Table
Function
Standby
Read: Word
Read: Lower Byte
V53C16126H
RAS
H
L
L
LCAS
H
L
L
UCAS
H
L
H
WE
X
H
H
OE
X
L
L
ADDRESS
X
ROW/COL
ROW/COL
High-Z
Data Out
I/O
Notes
Lower Byte, Data-Out
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, Data-Out
Data-In
Lower Byte, Data-In
Upper Byte, High-Z
Lower Byte, High-Z
Upper Byte, Data-In
Data-Out, Data-In
Data-Out
Data-In
Data-Out, Data-In
Data-Out
High-Z
High-Z
3
1,2
2
2
1,2
2
Read: Upper Byte
L
H
L
H
L
ROW/COL
Write: Word (Early-Write)
Write: Lower Byte (Early)
L
L
L
L
L
H
L
L
X
X
ROW/COL
ROW/COL
Read: Upper Byte (Early)
L
H
L
L
X
ROW/COL
Read-Write
Page-Mode Read
Page-Mode Write
Page-Mode Read-Write
Hidden Refresh Read
RAS-Only Refresh
CBR Refresh
L
L
L
L
L→H→L
L
H→L
L
H→L
H→L
H→L
L
H
L
L
H→L
H→L
H→L
L
H
L
H→L
H
L
H→L
H
X
X
L→H
L
X
L→H
L
X
X
ROW/COL
COL
COL
COL
ROW/COL
ROW
X
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).
V53C16126H Rev. 1.3 February 1998
8
MOSEL [ MOSEL VITELIC, CORP ]
