MicroRidge MICRO-RM2.4 User manual

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Version: 1.3.9
Printed: Wednesday, December 12, 2018 at 1:22 PM in Sunriver, Oregon.
MicroRidge 2.4 GHz Radio Module
Copyright © 2014-2018 MicroRidge Systems, Inc.

IContents
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
Table of Contents
Chapter 1 1 ...................................................................................................................................Introduction
Chapter 2 3 ...................................................................................................................................Features
Chapter 3 4 ...................................................................................................................................Related Documents
Chapter 4 5 ...................................................................................................................................Specifications
...................................................................................................................................
Atmel Documentation 5
...................................................................................................................................
Dimensions 7
...................................................................................................................................
Solder Paste Mask 10
...................................................................................................................................
Pin Configuration 11
...................................................................................................................................
Soldering 13
Chapter 5 14 ...................................................................................................................................Serial Number
Chapter 6 15 ...................................................................................................................................Wireless Library
Chapter 7 16 ...................................................................................................................................Application Board Design
Chapter 8 18 ...................................................................................................................................Ordering Information
Chapter 9 19 ...................................................................................................................................Radio Certification
Chapter 10 22 ...................................................................................................................................Contact MicroRidge
Chapter 11 23 ...................................................................................................................................Revision History

Introduction 1
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
1 Introduction
The MICRO-RM2.4 Radio Module from MicroRidge Systems is a small wireless module based
on the Atmel ATmega2564RFR2 microcontroller. The ATmega2564RFR2 is a low-powered
CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture combined with a high
data rate transceiver for the 2.4 GHz ISM (industrial, scientific and medical) band.
The MICRO-RM2.4 contains an on-board chip antenna. The module contains radio certifications
for FCC, IC and EU (CE). No additional RF testing is required as long as the application of the
MICRO-RM2.4 follows the approved certifications.
The small size of the MICRO-RM2.4 module allows it to be used in small and compact products.
The module measures 12 x 20.75 x 3 mm (.472 x .817 x .118 inches). The module requires a
power supply of 1.8 to 3.6 volts DC. This voltage range allows the module to be powered by a
single 3 volt coin cell or two 1.5 volt batteries.
Radio Module Images
The photos below show the top and bottom views of the radio module. The 2 large gold pads
shown in the bottom view are the ground pads discussed in the Dimensions section .
Isometric View
Top View
Bottom View
7

Introduction 2
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
Basic Block Diagram
A basic block diagram of the MICRO-RM2.4 Radio Module is shown below. Refer to the Atmel
ATmega644/1284/2564RFR2 documentation for block diagrams with greater detail.
4

Features 3
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
2 Features
The features of the MICRO-RM2.4 Radio Module are numerous and allow the module to be used
in many low powered short range applications. The primary features of this module are as
follows:
§ Ultra compact size: 12 x 20.75 x 3 mm (.472 x .817 x .118 inches)
§ Built-in 32.768 kHz crystal for low power and deep sleep modes
§ Built-in 16 MHz crystal for 2.4 GHz transceiver and AVR microcontroller
§ Power supply voltage of 1.8 to 3.6 VDC
§ Typical power consumption:
o0.75 m A in sleep mode (transceiver in Sleep and AVR in Power Save/Down mode)
o14.5 ma in TX mode at 3.5 dBm
o12.5 ma in RX mode
§ Memory resources:
o256K bytes In-System Self-Programmable Flash
o8K bytes EEPROM
o32K bytes SRAM
§ High performance RF-CMOS 2.4 GHz radio transceiver targeted for IEEE®802.15.4™,
ZigBee™, IPv6, 6LoWPAN, RF4CE, SP100, WirelessHART™ and ISM applications.
§ TX/RX 128 byte frame buffer
§ TX output power from -17 dBm to 3.5 dBm
§ Receiver sensitivity = -100 dBm
§ 14 RF Channels (11 to 25, channel 14 is reserved for internal use)
§ Serial bootloader
§ Interface connections:
o30 I/O ports
o2 RS-232 serial ports
oJTAG programming connection
oI2C
§ High performance low power AVR®8-bit microcontroller
§ ROHS complainant
§ Extensive documentation and software resources available on the Atmel web site

Related Documents 4
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
3 Related Documents
Additional information is available about the MICRO-RM2.4 Radio Module components and
supporting software from the following sources:
§ A complete description of the ATmega2564RFR2 microcontroller used in the module is
available on the Atmel web site (www.atmel.com). The document describing this
microcontroller is ATmega644/1284/2564RFR2 42073B-MCU Wireless. The document
number (42073B-MCU) is updated by Atmel when changes are made to the document.
§ Atmel also has additional documentation available that may be helpful in developing
wireless applications for the MICRO-RM2.4 module.
§ The MicroRidge MICRO-RM2.4 Wireless Communication Library (RM2.4 Library) is
available to assist in the development of firmware for the MICRO-RM2.4 Radio Module. In
order to use the RM2.4 Library, you must purchase Radio Modules that have the library
support enabled. This library is only supported on specific versions of the IAR Embedded
Workbench for the AVR microcontroller. Refer to the Wireless Library section in this
manual for more information.
§ Additional documentation and information dealing with the MICRO-RM2.4 Radio Module
will be available at www.MicroRidge-RM.com during the 3rd quarter of 2015.
15

Specifications 5
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
4 Specifications
The specifications section consists of 4 areas:
Atmel Documentation This section contains 3 of the tables from the Atmel
ATmega644/1284/2564RFR2 documentation. The
complete Atmel document is over 600 pages in length. In
order to fully understand the radio module and how to work
with it, you must become familiar with this Atmel document.
Dimensions The dimensions for the MICRO-RM2.4 Radio Module, pad
locations and bottom side ground pads are presented in
this section.
Pin Configuration The pin connections available on the MICRO-RM2.4 Radio
Module are listed in this section.
Soldering A soldering profile is shown in this section.
4.1 Atmel Documentation
For the complete specifications for the Atmel ATmega2564RFR2 radio transceiver refer to
ATmega644/1284/2564RFR2 documentation . The information shown below is only a few of
the multiple tables from the Atmel documentation. Refer to the Atmel documentation for the test
conditions and references shown in the tables.
General RF Specifications
4

Specifications 6
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
Transmitter characteristics
Current Consumptions Specifications

Specifications 7
Copyright © 2014-2018 MicroRidge Systems, Inc.
MicroRidge 2.4 GHz Radio Module
Version 1.3.9
4.2 Dimensions
Board Dimensions
The dimensions for the MICRO-RM2.4 Radio Module are given below. All of the dimensions are
in mm. The thickness of the module from the bottom of the module to the top of the RF shield is
3 mm. The pad spacing is 1 mm and the pad width is 0.7 mm.
Board Dimensions (mm) and Solder Pad Placement