Product Info
DRAFT 8-1-2019 Technical Brief
A c l a r a R a d i o M o d u l e I m p l e m e n t a t i o n R e q u i r e m e n t s 2
Introduction
The information in this document will provide guidance on proper
implementation of the Model 101-2017-025 Aclara Radio Module (ARM). The
ARM is a limited single modular transmitter that can be used on Aclara’s
proprietary end point devices to support Aclara’s RF network. Proper RF
performance, within Aclara’s licensed operating frequency band of 450 MHz to
470 MHz, can be achieved by following a few design guidelines. With the
module implemented properly, there is no need for repeating FCC transmitter
tests, saving both time and cost of final device certifications.
Aclara Radio Module (ARM) Pin Diagram
ARM Pin Signal Descriptions
Radio Pin # Signal Name Function I/O Type Level
V1
GND
V2
GND
V3
GND
V4
GPIO1
TXRX GPIO 1
Digital I/O
3.6 V
V5
GPIO0
TXRX GPIO 0
Digital I/O
3.6 V
V6
GND
V7
VCC_TXRX
Transceiver Supply Voltage
Power
3.6 V
V8
TXRX_nIRQ
TXRX Interrupt
Digital
Output
3.6 V
V9
SPI1_SCK
TXRX Serial Clock
Digital Input
3.6 V
V10
SPI1_MISO
TXRX Serial Data Out
Digital
Output
3.6 V
V11
SPI1_MOSI
TXRX Serial Data In
Digital Input
3.6 V
V12
SPI1_nCS
TXRX Chip Select
Digital Input
3.6 V