ZEN2044F Zenic, ZEN2044F Datasheet - Page 9

• Manufacturer Part Number: ZEN2044F
• Description: 33MHz Up/down Counter
• Manufacturer: Zenic

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4-4. Pulse count timing(Edge evaluation)
mode. "1" means counting and "0" means no operation.
The following diagrams show how an edge of the input pulse is evaluated in each count operation
Up/down pulse input
UP
DN
Phase-shifted pulse input
A
B
Single pulse input
A
B
Note ) Both UP and DN should not be "0" at once.
Single
Double 1
Quad
Single
Double 1
Note ) B is used as the count enable signal.
1
1
1
1
1
0
1
0
0
1
1
1
0
1
1
1
0
1 0
0
0 0
0
1
0
0
0
1
0
0
0
0
1
1
1
0
1
0
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0
1
1
1
(
Z2044G00 ZENIC INC.
ZEN2044F
)