Pre-scale Value

Count

Count for 1 second

Frequency

1:2

128

6400

50 Hz

1:4

64

3200

50 Hz

1:8

32

1600

50 Hz

1:16

16

800

50 Hz

1:32

8

400

50 Hz

1:64

4

200

50 Hz

1:128

2

100

50 Hz

1:256

1

50

50 Hz