IDT70V05S/L
High-Speed 8K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Truth Table: Non-Contention Read/Write Control
Inputs
(1)
Outputs
CE
H
L
L
X
R/
W
X
L
H
X
OE
X
X
L
H
SEM
H
H
H
X
I/O
0-7
High-Z
DATA
IN
DATA
OUT
High-Z
Deselected: Power-Down
Write to Memory
Read Memory
Outputs Disabled
Mode
NOTE:
1. A
0L
— A
12L
≠
A
0R
— A
12R
2941 tbl 02
Truth Table II: Semaphore Read/Write Control
(1)
Inputs
(1)
Outputs
CE
H
H
L
R/
W
H
↑
X
OE
L
X
X
SEM
L
L
L
I/O
0-7
DATA
OUT
DATA
IN
____
Mode
Read Data in Semaphore Flag
Writ
e
I/O
0
into Semaphore Flag
Not Allowed
2941 tbl 03
NOTE:
1. There are eight semaphore flags written to via I/O
0
and read from I/O
0
-I/O
7
. These eight semaphores are addressed by A
0
-A
2
.
6.42
4
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
