A42L0616 Series
Truth Table
Function
Standby
Read: Word
Read: Lower Byte
RAS
H
L
L
UCAS
H
L
H
LCAS
H
L
L
WE
X
H
H
OE
X
L
L
Address
X
Row/Col.
Row/Col.
I/Os
High-Z
Data Out
I/O
0-7
= Data Out
I/O
8-15
= High-Z
I/O
0-7
= High-Z
I/O
8-15
= Data Out
Data In
I/O
0-7
= Data In
I/O
8-15
= X
I/O
0-7
= X
I/O
8-15
= Data In
Data Out
→
Data In
Data Out
Data Out
Data In
Data In
Data Out
→
Data In
Data Out
→
Data In
Data Out
Data In
→
High-Z
High-Z
High-Z
High-Z
Notes
Read: Upper Byte
L
L
H
H
L
Row/Col.
Write: Word
Write: Lower Byte
L
L
L
H
L
L
L
L
H
H
Row/Col.
Row/Col.
Write: Upper Byte
L
L
H
L
H
Row/Col.
Read-Write
EDO-Page-Mode Read: Hi-Z
-First cycle
-Subsequent Cycles
EDO-Page-Mode Write
-First cycle
-Subsequent Cycles
EDO-Page-Mode Read-Write
-First cycle
-Subsequent Cycles
Hidden Refresh Read
Hidden Refresh Write
RAS -Only Refresh
CBR Refresh
Self Refresh
Note:
L
L
L
L
L
L
L
L→H→L
L→H→L
L
H→L
H→L
L
H→L
H→L
H→L
H→L
H→L
H→L
L
L
H
L
L
L
H→L
H→L
H→L
H→L
H→L
H→L
L
L
H
L
L
H→L
H
H
L
L
H→L
H→L
H
L
X
X
H
L→H
H→L
H→L
H
H
L→H
L→H
L
X
X
X
X
Row/Col.
Row/Col.
Col.
Row/Col.
Col.
Row/Col.
Col.
Row/Col.
Row/Col.
Row
X
X
1,2
2
2
1
1
1, 2
1, 2
2
1
3
1. Byte Write may be executed with either
UCAS
or
LCAS
active.
2. Byte Read may be executed with either
UCAS
or
LCAS
active.
3. Only one
CAS
signal (
UCAS
or
LCAS
) must be active.
PRELIMINARY
(June, 2002, Version 0.2)
4
AMIC Technology, Inc.
AMICC [ AMIC TECHNOLOGY ]
