5

Timing Diagram

THREE-STATE MODE SLOWER THAN REFRESH ONE SHOT TIMER

NOTE: BOT switching not relevant.

BISTATE MODE SLOWER THAN REFRESH ONE SHOT TIMER

Typical Circuit Configuration

TRUTH TABLE

Applicable to Typical Circuit Configuration (Figure 1)

INPUTS

OUTPUTS

UP/DN

ENABLE

PHASE

UPPER

LOWER

FAULT BAR

000

X

X

100

1

11001110

1

11011100

0

110

X

0100

0

X

X

1

X

X

100

0

010

X

X

101

1

100

X

X

100

1

XXXXX

0

0

0

0

NOTE: 0 = False, 1 = True, X = Don’t Care

ENABLE

UP/DOWN

REFRESH

ONE SHOT

UPPER

LOWER

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

COM

ENABLE

UP/DOWN

REFRESH

ONE SHOT

UPPER

LOWER

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

COM

SP601