8

FN8177.2

September 9, 2005

Power-Up and -Down Requirements

first, then the potentiometer voltages. During power-up, the

data sheet parameters for the DCP do not fully apply until 1

spec is always in effect. In order to prevent unwanted tap

position changes, or an inadvertent store, bring the CS and

up.

AC Timing

SYMBOL

PARAMETER

LIMITS

UNIT

MIN

TYP

(Note 6)

MAX

CS to INC setup

100

ns

INC HIGH to U/D change

100

ns

U/D to INC setup

2.9

µs

INC LOW period

1

µs

INC HIGH period

1

µs

INC inactive to CS inactive

1

µs

CS deselect time (STORE)

20

ms

CS deselect time (NO STORE)

100

ns

1

5

µs

INC cycle time

4

µs

INC input rise and fall time

500

µs

Power-up to wiper stable

5µs

0.2

50

V/ms

Store cycle

510

ms

NOTES:

7. This parameter is not 100% tested.

CS

INC

U/D

MI

(SEE NOTE)

10%

90%

90%

NOTE:

X9313