RFM50 V1.0

3

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4.

8B

Pin Definition

definition

Type

Function

ANT

AI/ AO

RF signal input/output port, Connect 50 OHM antenna

GND

G

Power ground

GPIO2

DI/DO or AI/AO

General Purpose I/O controlled by the RF22 periph-eral. May be configured

through the RF22 registers to perform various functions including: Clock Output,

FIFO status, POR, Wake-Up Timer, Low Battery Detect, TRSW, AntDiversity

control, etc. See the RF22 GPIO Con-figuration Registers for more information.

P0.7

IREF0

D I/O or A I

AO

Port 0.7. See RF50 Port I/O section for a complete description.

IREF0 Output. See RF50 IREF section for complete description.

P0.6

CNVSTR

D I/O or A I

DI

Port 0.6. See RF50 Port I/O section for a complete description.

External Convert Start Input for ADC0. See RF50 ADC0 section for a complete

description.

P0.5

RX

D I/O or A I

DI

Port 0.5. See RF50 Port I/O section for a complete description.

UART RX Pin. See RF50 Port I/O section.

P0.4

TX

D I/O or A I

DO

Port 0.4. See RF50 Port I/O section for a complete description.

UART TX Pin. See RF50 Port I/O section.

P0.1

AGND

D I/O or A I

G

Port 0.1. See Port I/O Section for a complete description. Optional Analog

Ground. See VREF chapter.

P0.3

D I/O or A In

Port 0.3. See RF50 Port I/O Section for a complete description.