AT80C51RA2-3CSCV View Datasheet(PDF) - International Rectifier
Part Name
Description
MFG CO.
'AT80C51RA2-3CSCV' PDF : 85 Pages View PDF
AT/TS8xC51Rx2
Table 11-11. AC Parameters for a Variable Clock: derating formula
Standard
Symbol
Type
Clock
X2 Clock
-M
-V
-L
TXLXL
TQVHX
TXHQX
TXHDX
TXHDV
Min
12 T
6T
Min
10 T - x
5T-x
50
50
50
Min
2T-x
T-x
20
20
20
Min
x
x
0
0
0
Max
10 T - x
5 T- x
133
133
133
Units
ns
ns
ns
ns
ns
11.5.8 Shift Register Timing Waveforms
Figure 11-9. Shift Register Timing Waveforms
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
INPUT DATA
CLEAR RI
0
1
2
3
4
5
6
7
8
TXLXL
TQVXH
TXHQX
0
1
2
3
4
5
6
7
TXHDV
VALID
TXHDX
VALID VALID
VALID
VALID
VALID
SET TI
VALID VALID
SET RI
69
4188E–8051–08/06
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