Rev. A - Mar. 19, 1999
37
Preliminary
TS80C31X2
Table 24. AC Parameters for a Variable Clock
7.4.8 Shift Register Timing Waveforms
Figure 16. Shift Register Timing Waveforms
Symbol
Type
Standard
Clock
X2 Clock
-M
-V
-L
Units
T
XLXL
Min
12 T
6 T
ns
T
QVHX
Min
10 T - x
5 T - x
50
50
133
ns
T
XHQX
Min
2 T - x
T - x
30
20
50
ns
T
XHDX
Min
x
x
0
0
0
ns
T
XHDV
Max
10 T - x
5 T- x
50
50
133
ns
INPUT DATA
VALID
VALID
VALID
VALID
0
1
2
3
4
5
6
8
7
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
CLEAR RI
T
XLXL
T
QVXH
T
XHQX
T
XHDV
T
XHDX
SET TI
SET RI
INSTRUCTION
0
1
2
3
4
5
6
7
VALID
VALID
VALID
VALID