Micrel, Inc.

MICRF302

October 2008

3

M9999-100908-A

Pin Configuration

10-Pin MLF

Pin Description

Pin Number

Pin Name

Pin Function

D3

1

Switch Input 3

D2

2

Switch Input 2

D1

3

Switch Input 1

D0

4

Switch Input 0

Typical applications connect D0-D3 to ground with a push-button switch. Unused

switch inputs can just be left unconnected.

D0-D3 are deglitched by the MICRF302; pulses shorter than 8 ms are rejected.

VSS

5

Negative Supply (Ground)

SEL0

6

Data rate select 0

SEL1

7

Data rate select 1

The data rate select pins must be connected to VDD or VSS, and select the data rate

as follows:

00: 600 bps

01: 1 kpbs

10: 3 kbps

11: 4.8 kbps

TXEN

8

Transmitter Enable

The active-high enable turns on a companion transmitter 40 ms before baseband data

transmission starts. This delay allows the Transmitter’s PLLs to lock.

DOUT

9

RF Baseband Data Output

Data from the MICRF302 is Manchester-coded.

VDD

10

Positive Supply