operation if the duty cycle is less than 25 %. On the other hand, since the clock can operate with

a 50% duty cycle the operator has additional timing flexibility if it desired.

Switching Characteristics @ 25

Figure 3. Timing Diagram of the PI3012 A Sensor

Item

Symbol

Minimum

Mean

Maximum

Units

Clock cycle time

to

200

10000

ns

Clock pulse width

(1)

tw

50

ns

Clock duty cycle

25

50

75

%

Data setup time

tds

50

ns

Data hold time

tdh

20

ns

20

ns

EOS rise delay

terdl

60

ns

EOS fall delay

tefdl

70

ns

tdl

20

ns

ts/h

90

ns

PAGE 5 OF 7 PI3012A, 6/9/99

EOS

(END OF SCAN)

CP

tprh

SP

Vout

to

tw

tdh

tds

tdl

ts/h

terdl

tefdl