GS840E18/32/36AT/B-190/180/166/150/100
Byte Write Truth Table
Function
Read
Read
Write byte
A
Write byte
B
Write byte
C
Write byte
D
Write all bytes
GW
H
H
H
H
H
H
H
BW
H
L
L
L
L
L
L
B
A
X
H
L
H
H
H
L
B
B
X
H
H
L
H
H
L
B
C
X
H
H
H
L
H
L
B
D
X
H
H
H
H
L
L
Notes
1
1
2, 3
2, 3
2, 3, 4
2, 3, 4
2, 3, 4
Write all bytes
L
X
X
X
X
X
Notes:
1. All byte outputs are active in read cycles regardless of the state of Byte Write Enable inputs.
2. Byte Write Enable inputs B
A
, B
B
, B
C
and/or B
D
may be used in any combination with BW to write single or multiple bytes.
3. All byte I/Os remain High-Z during all write operations regardless of the state of Byte Write Enable inputs.
4. Bytes “
C
” and “
D
” are only available on the x32 and x36 versions.
Rev: 1.12 10/2004
12/31
© 1999, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GSI [ GSI TECHNOLOGY ]
