COUNT | Q0 | Q1 | Q2 | Q3 |
---|---|---|---|---|
0 | L | L | L | L |
1 | H | L | L | L |
2 | L | H | L | L |
3 | H | H | L | L |
4 | L | L | H | L |
5 | H | L | H | L |
6 | L | H | H | L |
7 | H | H | H | L |
8 | L | L | L | H |
9 | H | L | L | H |
10 | L | H | L | H |
11 | H | H | L | H |
12 | L | L | H | H |
13 | H | L | H | H |
14 | L | H | H | H |
15 | H | H | H | H |
Mode selection:
MR1 | MR2 | Q0 | Q1 | Q2 | Q3 |
---|---|---|---|---|---|
H | H | L | L | L | L |
L | H | count | count | count | count |
H | L | count | count | count | count |
L | L | count | count | count | count |
L
: low voltageH
: high voltageX
: don’t careZ
: high impedance