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 2014 Microchip Technology Inc. DSXXXXXXXXA-page 1

RN4020

Features

• Fully qualified Bluetooth

version 4.1 module

• Onboard Bluetooth Low Energy 4.1 stack

• ASCII command interface API over UART

• Multiple IOs for control and status

• Secure AES128 encryption

• GAP, GATT, SM, L2CAP and integrated public

profiles

• Create custom services using command API

• Microchip Low Energy Data Protocol (MLDP) for

streaming data applications

• Software configurable role as peripheral or cen-

tral, client or server

• Compact form factor 11.5 x 19.5 mm

• Low-power consumption

• UART interface, GPIO, ADC

• 64 KB internal serial flash

• Castellated SMT pads for easy and reliable PCB

mounting

• Environmentally friendly, RoHS compliant

• Certifications: FCC, IC, CE, QDID

• Device Firmware Upgrade (DFU)

Description

Microchip’s RN4020 Bluetooth Low Energy Module

provides a highly integrated solution for delivering low

power Bluetooth 4.1 solu tions. The advanced com-

mand interface offers rapid time to market.

The RN-4020 module complies with Bluetooth specifi-

cation version 4.1. It integrates RF, a baseband control-

ler, command API processor, making it a compl ete

Bluetooth Low Energy Solution.

The RN4020 can be used with either low cost micro-

controller for intelligent Bluetooth Low Energy applica-

tions. For simpl e sensor ap plications, the RN4020

internal scripting capabilities enable basic functions to

be implemented without the need for external host

MCU or software development tools.

Applications

• Health/Medical Devices

- Glucose Meters

- Heart rate

-Scale

• Sports Activity and Fitness

- Pedometer

- Cycling computer

- Heart rate

• Retail

-POS

- Asset tagging and tracking

- Proximity Advertising

• Beacon applications

• Internet of Things Sensor tag

• Remote Control

- Keyboard Mice

- AV consoles, game controllers

• Wearable smart devices and accessories

• Industrial Control

- Private (custom) services

- Low bandwidth cable replacement

• Smart Energy/Smart Home

Bluetooth

Low Energy Module

DRAFT

Summary of content (28 pages)

PAGE 1
RN4020 Bluetooth® Low Energy Module • • • • • • • • • • • Fully qualified Bluetooth® version 4.1 module Onboard Bluetooth Low Energy 4.1 stack ASCII command interface API over UART Multiple IOs for control and status Secure AES128 encryption GAP, GATT, SM, L2CAP and integrated public profiles Create custom services using command API Microchip Low Energy Data Protocol (MLDP) for streaming data applications Software configurable role as peripheral or central, client or server Compact form factor 11.5 x 19.
PAGE 2
RN4020 Table of Contents AF T 1.0 Device Overview........................................................................................................................................................................... 3 2.0 General Specifications.................................................................................................................................................................. 5 3.0 Microcontroller to RN4020 Interface .......................................................
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RN4020 DEVICE OVERVIEW FIGURE 1-1: RN4020 TOP VIEW RN4020 PIN DIAGRAM D R FIGURE 1-2: AF Figure 1-2 shows the module’s pinout and Table 1-1 describes the pins. T 1.0  2014 Microchip Technology Inc.
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RN4020 TABLE 1-1: Pin PIN DESCRIPTION Symbol Description Function GND Ground Ground 2 AIO2 Bi-directional with programmable analog IO 1.65V input, 1.35V out, and 30mA max out 3 AIO1 Bi-directional with programmable analog IO 1.65V input, 1.35V out, and 30mA max out 4 AIO0 Bi-directional with programmable analog IO 1.65V input, 1.
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RN4020 TABLE 1-1: Pin PIN DESCRIPTION (CONTINUED) Symbol Description Function 21 RSVD Do not connect. Factory diagnostics 22 RSVD Do not connect. Factory diagnostics NC 23 VDD Supply voltage: 2.0 to 4.2V Supply Voltage, 2.0 to 4.2 24 GND Ground Ground GENERAL SPECIFICATIONS Table 2-1 provides the general specifications for the module. Table 2-2, Table 2-3, and Table 2-4 provide the module’s weight, dimensions, electrical characteristics, and current consumption.
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RN4020 3.0 MICROCONTROLLER TO RN4020 INTERFACE INTERFACE DESCRIPTION AF T FIGURE 3-1: D R Figure 3-1 illustrates the interface between PIC microcontroller and RN4020 module. The minimum interface consists of UART and WAKE HW line. This enables the microcontroller to communi cate with RN 4020 module using ASCII comman d API. T he command API is described in Sec XX. 3.
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RN4020 4.0 PHYSICAL DIMENSIONS Figure 4-1 shows the physical dimensions for RN4020 module. Figure 4-2 shows the recommended PCB layout. PHYSICAL DIMENSIONS FOR RN4020 RECOMMENDED PCB FOOTPRINT D R FIGURE 4-2: AF T FIGURE 4-1:  2014 Microchip Technology Inc.
PAGE 8
RN4020 5.0 TYPICAL APPLICATION SCHEMATIC Figure 5-1 shows schematic for the RN4 020 PICtail™/PICtail Plus Daughter Board development tool, PNXXXXXXXXXX. RN4020 TYPICAL APPLICATION SCHEMATIC D R AF T FIGURE 5-1: DSXXXXXXXXA-page 8  2014 Microchip Technology Inc.
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RN4020 6.
PAGE 10
RN4020 SUPPORTED SERVICES The RN4020 firmware support the following built-in profiles listed in Table 7-1 below. The services are enabled via Command API and serviced in the same manner. Each service manages “Characteristics” which as data values are declared and defined by Bluetooth. The values for ea ch characteristic are ca ched in modules memory and can be read by another Bluetooth device, such Smartphone acting in Central role. The values of every Characteristic are updated via Command API over UART.
PAGE 11
RN4020 FIGURE 7-3: 3D RADIATION PATTERN AND ANTENNA ORIENTATION The lead-free solder reflow temperature and times are: • Temperature — 230°C, 60 seconds maximum, peak 245° C maximum • Preheat temperature — 165° ± 15°C, 90 to 120 seconds • Time — Single pass, one time The solder reflow temperature must not exceed 220°C. To reflow solder the module onto a PCB, Roving Networks recommends a RoHS-compli ant solder paste equivalent to NIHON ALMIT paste or OMNIX OM-310 solder paste from Alpha metals.
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RN4020 SOLDER REFLOW CURVE D R AF T FIGURE 7-5: DSXXXXXXXXA-page 12  2014 Microchip Technology Inc.
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RN4020 REGULATORY APPROVAL This section outlines the regulatory information for the RN4020 module for the following countries: • • • • • United States Canada Europe Australia New Zealand 8.
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RN4020 8.1.2 RF EXPOSURE 8.2 Canada The RN4020 module has been approved for mixed mobile and portable exposure hosts; co-location with other transmitters may need additional evaluation in accordance with FCC multi-transmitter guidelines. The RN4020 module has been certified for use in Canada under Industry Canada (IC) Ra dio Standards Specification (RSS) RSS-210 and RSSGen. Modular approval permits the installation of a modu le in a host device without the need to recertify the device.
PAGE 15
RN4020 Industry Canada: http://www.ic.gc.ca/ 8.3 Europe The RN4020 module is an R&TTE Directive assessed radio module that is CE marked and has been manufactured and tested with the intention of be ing integrated into a final product. The RN4020 module has been tested to R&TTE Directive 1999/5/EC Essential Requirements for Health and Safety (Article (3.1(a)), Electromagnetic Compatibility (EMC) (Article 3.1(b)), and Radio (Article 3.2) and are summarized in Table 3-1: European Compliance Testing.
PAGE 16
RN4020 8.3.2 ANTENNA REQUIREMENTS From R&TTE Compliance Association document Technical Guidance Note 01: Provided the integrator installing an assessed radio module with an integral or specific antenna and installed in conformance with the radio module manufacturer’s installation instructions requires no further evaluation under Article 3.2 of the R&TTE Directive and does not require further involvement of an R&TTE Directive Notified Body for the final product. [Section 2.2.
PAGE 17
RN4020 TABLE 8-1: RN4020 EUROPEAN COMPLIANCE TESTING Certification Standards Article Laboratory Report Number Date 8.4 Australia 8.5 New Zealand The New Z ealand radio regulations do not provid e a modular approval policy similar to the United States (FCC) and Canada (IC). However, RN4020 module RF transmitter test reports can be used in part to demonstrate compliance against the New Z ealand “General User Radio License for Short Ra nge Devices”.
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D R AF T RN4020 DSXXXXXXXXA-page 18  2014 Microchip Technology Inc.
PAGE 19
RN4020 9.0 ORDERING INFORMATION Table 9-1 provides ordering information for the RN4020 module. TABLE 9-1: ORDERING INFORMATION Part Number RN4020RM Note: Description Standard firmware (GATT, GAP, L2CAP) peripheral and Central mode For custom applications, contact Microchip representative. D R AF T Go to http://www.microchip.com for current pricing and a list of distributors carrying Microchip products.  2014 Microchip Technology Inc.
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RN4020 D R AF T NOTES: DSXXXXXXXXA-page 20  2014 Microchip Technology Inc.
PAGE 21
RN4020 APPENDIX A: REVISION HISTORY Revision A (May 2014) D R AF T This is the in itial released version of the document in the Microchip format.  2014 Microchip Technology Inc.
PAGE 22
RN4020 D R AF T NOTES: DS00000000A-page 22  2014 Microchip Technology Inc.
PAGE 23
RN4020 THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers.
PAGE 24
RN4020 D R AF T NOTES: DS00000000A-page 24  2014 Microchip Technology Inc.
PAGE 25
RN4020 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. I PART NO. Device Temperature Range RM XXX Package Firmware Revision Number RN4020: UART, PCB Antenna Temperature Range: I = -40°C to +85°C Package: RM = T Device: D R AF Radio Module  2014 Microchip Technology Inc.
PAGE 26
RN4020 D R AF T NOTES: DSXXXXXXXXA-page 26  2014 Microchip Technology Inc.
PAGE 27
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 28
Worldwide Sales and Service Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://www.microchip.com/ support Web Address: www.microchip.