ISM 433 MHz ASK Transmitter – Preliminary Data Sheet

AS3902

Rev. A7, December 2000

Page 8 of 14

2.4 Digital Pin Characteristics

Input parameters for bi-directional pins (CLK/NWUP, NRES/PD) are valid at disabled outputs.

Symbol Parameter

Conditions

Min

Typ

Max

Units

Note

CLK/NWUP (µC clock output / wake-up input)

VOH

High level output voltage IOH =-1 mA

VDD-0.5

-

V

VOL

Low level output voltage IOL =1 mA

-

0.6

V

tr

Rise time

CLoad = 10 pF

20

ns

td

Fall time

CLoad = 10 pF

20

ns

jcc

Cycle to cycle jitter

+/-5

%

1)

VIH

High level input voltage

VDD-0.5

-

V

VIL

Low level input voltage

-

0.3

V

IIH

High level input current

VIH = VDD

1

µA

IIL

Low level input current

VIL =0 V; Due to

internal pull-up

-17

µA

2)

TX (serial data input)

VIH

High level input voltage

VDD-0.5

-

V

VIL

Low level input voltage

-

0.3

V

IIH

High level input current

VIH= VDD; Due to

internal pull-down

35

µA

IIL

Low level input current

VIL =0 V

-1

µA

NRES/PD (µC reset output / transmitter power down input)

VOH

High level output voltage IOH = -1mA

VDD-0.5

-

V

VOL

Low level output voltage IOL = 1mA

-

0.6

V

VIH

High level input voltage

VDD-0.5

-

V

VIL

Low level input voltage

-

0.3

V

IIH

High level input current

VIH = VDD

1

µA

IIL

Low level input current

VIL =0 V; Due to

internal pull-up

-17

µA

2)

Note:

1)

guaranteed by design

2)

cf. Figure 6