Datasheet

ManualsBrandsMicrochip ManualsBluetooth ModulesBluetooth Module V4.1 7.5dBm

 2015 Microchip Technology Inc. DS50002279B-page 1

RN4020

Features

• Fully certified Bluetooth

version 4.1 module

• On-board Bluetooth Low Energy 4.1 stack

• ASCII command interface API over UART

• Device Firmware Upgrade (DFU) over UART or Over

the Air (OTA)

• Microchip Low-energy Data Profile (MLDP) for serial

data applications

• Remote commands over-the-air

• 64 KB internal flash

• Compact form factor: 11.5 x 19.5 x 2.5 mm

• Castellated SMT pads for easy and reliable PCB

mounting

• Environmentally friendly, RoHS compliant

• Certifications: FCC, IC, CE, QDID, VCCI, KCC, and

NCC

Operational

• Single operating voltage: 1.8V to 3.6V (3.3V typical)

• Temperature range: -30°C to 85°C

• Low-power consumption

• Simple, UART interface

• Integrated Crystal, I

C Interface, Internal Voltage

Regulator, Matching Circuitry, and PCB Antenna

• Multiple IOs for control and status

•GPIO, ADC

• Three Pulse Width Modulation (PWM) outputs

RF/Analog Features

• ISM Band 2.402 to 2.480 GHz operation

• Channels 0-39

• RX Sensitivity: -92.5 dBm at 0.1% BER

• TX Power: -19.0 dBm to +7.5 dBm

• RSSI Monitor

MAC/Baseband/Higher Layer Features

• Secure AES128 encryption

• GAP, GATT, SM, L2CAP, and integrated public

profiles

• Create custom services using command API

• Keyboard I/O Authentication

• Software configurable role as peripheral or central

and client or server

• Built-in scripting capabilities for hostless operation

Applications

• Health/Medical Devices

- Glucose meters

- Heart rate

-Scale

• Sports Activity and Fitness

- Pedometer

- Cycling computer

- Heart rate

• Retail

- Point of Sale (POS)

- Asset tagging and tracking

- Proximity advertising

• Beacon Applications

• Internet of Things (IoT) Sensor tag

• Remote Control

- Embedded Device Control

- AV consoles and game controllers

• Wearable Smart Devices and Accessories

• Industrial Control

- Private (custom) services

- Low bandwidth cable replacement

• Smart Energy/Smart Home

Description

Microchip’s RN4020 Bluetooth Low Energy Module pro-

vides a highly integrated solution for delivering low-power

Bluetooth 4.1 solutions. The advanced command inter-

face offers rapid time to market. The RN4020 module

complies with Bluetooth specification version 4.1. The

module integrates RF, a baseband controller, and a com-

mand API processor, making it a complete Bluetooth Low

Energy solution. The RN4020 can be used with ultra-low

cost microcontroller for intelligent Bluetooth Low Energy

applications. For simple sensor applications, the RN4020

internal scripting capabilities enable basic functions to be

implemented without the need for external host MCU or

software development tools.

Bluetooth

Low Energy Module

Summary of content (28 pages)

PAGE 1
RN4020 Bluetooth® Low Energy Module Features • • • • • • • • • • • Fully certified Bluetooth® version 4.1 module On-board Bluetooth Low Energy 4.1 stack ASCII command interface API over UART Device Firmware Upgrade (DFU) over UART or Over the Air (OTA) Microchip Low-energy Data Profile (MLDP) for serial data applications Remote commands over-the-air 64 KB internal flash Compact form factor: 11.5 x 19.5 x 2.
PAGE 2
RN4020 Table of Contents 1.0 Device Overview........................................................................................................................................................................... 3 2.0 General Specifications .................................................................................................................................................................. 6 3.0 Microcontroller to RN4020 Interface ..............................................................
PAGE 3
RN4020 FIGURE 1-2: 8$57B7; 569' 8$57B5; 3:0 3,2 576 3,2 &0' 0/'3 63, 3,2 *1' :$.(B+: :$.(B6: FIGURE 1-3: *1' 6'$ 3,2 /CTS $,2 6&/ 3,2 0,62 $,2 9'' 3,2 026, 3:0 RN4020 TOP VIEW $,2 *1' 3,2 &6 3:0 *1' 3,2 6&. 3:0 FIGURE 1-1: The RN4020 Bluetooth Low Energy RF module integrates Bluetooth 4.
PAGE 4
RN4020 TABLE 1-1: Pin PIN DESCRIPTION Name Description Function 1 GND Ground Ground 2 AIO2 Bi-directional with programmable analog I/O 1.35V and 30 mA max out 3 AIO1 Bi-directional with programmable analog I/O 1.35V and 30 mA max out 4 AIO0 Bi-directional with programmable analog I/O 1.35V and 30 mA max out 5 UART TX UART Transmit (TX) Output 6 UART RX UART Receive (RX) Input WAKE_SW Deep Sleep Wake; active-high to wake module from Deep Sleep.
PAGE 5
RN4020 TABLE 1-1: Pin 15 PIN DESCRIPTION (CONTINUED) Name WAKE_HW Description Function Hardware wake from Dormant state. Setting the WAKE_HW (pin15) high wakes the module from Dormant mode. During the module power up, if WAKE_HW pin is flipped high and low for three cycles (putting the WAKE_HW pin into high, low, and then high again is considered as one flip cycle) in the first five seconds, then the module performs a factory Reset.
PAGE 6
RN4020 2.0 GENERAL SPECIFICATIONS Table 2-1 provides the general specifications of the module. Table 2-2 and Table 2-3 shows the weight and dimensions, and electrical characteristics of the module. Table 2-4 and Table 2-5 specify the current consumption of the module. TABLE 2-1: TABLE 2-3: ELECTRICAL CHARACTERISTICS Specification Supply Voltage 1.8 to 3.
PAGE 7
RN4020 3.0 MICROCONTROLLER TO RN4020 INTERFACE Figure 3-1 illustrates the interface between PIC microcontroller and the RN4020 module. The minimum interface consists of UART and WAKE_HW lines. This enables the microcontroller to communicate with the RN4020 module using ASCII command API. The command API is described in Section 6.0 “ASCII Command API”. 3.1 CTS/RTS Hardware Flow Control 3.
PAGE 8
RN4020 4.0 PHYSICAL DIMENSIONS Figure 4-1 shows the physical dimensions for RN4020 module. Figure 4-2 illustrates the recommended PCB layout. It is recommended that when laying out the carrier board for the RN4020 module, the areas under the antenna, RF test point (semi-circular pad), and shielding connections do not contain surface traces, ground planes, or exposed vias. FIGURE 4-1: DS50002279B-page 8 Figure 4-3 specifies the recommended mounting details.
PAGE 9
RN4020 RN4020 RECOMMENDED PCB FOOTPRINT FIGURE 4-2: .HHS 2XW $UHDV .HHS RXW KRVW 3&% WRS FRSSHU OD\HU WUDFHV WR SUHYHQW SRVVLEOH VKRUW FLUFXLWV PP PP 6KLHOG 3DGV &RUQHUV [ PP PP PP ([WUD JURXQG SDG DUHD RSWLRQDO .
PAGE 10
RN4020 FIGURE 4-4: DS50002279B-page 10 RN4020 HOST PCB EXAMPLE LAYOUT  2015 Microchip Technology Inc.
PAGE 11
TYPICAL APPLICATION SCHEMATIC Figure 5-1 shows the schematics for the RN4020 Bluetooth Low Energy PICtail™/PICtail Plus development tool (P/N: RN-4020-PICtail). RN4020 TYPICAL APPLICATION SCHEMATICS 9'' 9 569' 3,2 %7B8$57B576 63,B3,2 *1' :$.(B+: & X) 3,2 &76 %7B:$.( 3,2 0,62 3,2 026, 3:0 569' 9'' 9 $,2 $,2 $,2 %7B8$57B7; %7B8$57B5; 6:$.
PAGE 12
RN4020 6.0 ASCII COMMAND API The RN4020 command API is documented in RN4020 Bluetooth Low Energy Module User’s Guide (DS70005191).
PAGE 13
RN4020 7.0 SUPPORTED SERVICES The RN4020 firmware support the built-in public services listed in Table 7-1. The services are enabled via Command API and serviced in the same manner. Each service manages “Characteristics” which are declared and defined by Bluetooth as data values. The values for each characteristic are cached in modules memory and can be read by another Bluetooth device such as smartphone acting in Central role. The values of every Characteristic are updated via Command API over UART.
PAGE 14
RN4020 FIGURE 7-2: ANTENNA PLOT 7.3 Soldering Recommendations The RN4020 wireless module is assembled using standard lead-free reflow profile IPC/JEDEC J-STD-020. The module can be soldered to the host PCB using standard leaded and lead-free solder reflow profiles.
PAGE 15
RN4020 8.0 REGULATORY APPROVAL This section outlines the regulatory information for the RN4020 module for the following countries: • • • • • • • • United States Canada Europe Australia New Zealand Japan Korea Taiwan 8.1 United States The RN4020 module has received Federal Communications Commission (FCC) CFR47 Telecommunications, Part 15 Subpart C “Intentional Radiators” modular approval in accordance with Part 15.212 Modular Transmitter approval.
PAGE 16
RN4020 8.1.2 RF EXPOSURE All transmitters regulated by FCC must comply with RF exposure requirements. KDB 447498 General RF Exposure Guidance provides guidance in determining whether proposed or existing transmitting facilities, operations or devices comply with limits for human exposure to Radio Frequency (RF) fields adopted by the Federal Communications Commission (FCC).
PAGE 17
RN4020 8.2.3 APPROVED EXTERNAL ANTENNA TYPES Transmitter Antenna (from Section 7.1.2 RSS-Gen, Issue 3, December 2010): The RN4020 module can only be sold or operated with antennas with which it was approved. Transmitter may be approved with multiple antenna types. An antenna type comprises antennas having similar in-band and out-of-band radiation patterns.
PAGE 18
RN4020 • European Radio Communications Office (ERO): http://www.ero.dk/ • The Radio and Telecommunications Terminal Equipment Compliance Association (R&TTE CA): http://www.rtteca.com/ TABLE 8-1: RN4020 EUROPEAN COMPLIANCE TESTING Certification Standards Safety EN 60950-1:2006+A11:2009+A1:2010 +A12:2011 Health EN 62479:2010 EMC EN 301 489-1 V1.9.2 (2011-09) Radio EN 300 328 V1.8.1 (2006-06) Article Laboratory Report Number [3.1(a)] Pending [3.1(b)] Pending (3.
PAGE 19
RN4020 8.6 Japan The RN4020 module has received type certification and is labeled with its own technical conformity mark and certification number as required to conform to the technical standards regulated by the Ministry of Internal Affairs and Communications (MIC) of Japan pursuant to the Radio Act of Japan. Integration of this module into a final product does not require additional radio certification provided installation instructions are followed and no modifications of the module are allowed.
PAGE 20
RN4020 8.8 Taiwan The RN4020 module has received compliance approval in accordance with the Telecommunications Act. Customers seeking to use the compliance approval in their product should contact Microchip Technology sales or distribution partners to obtain a Letter of Authority. 8.8.2 HELPFUL WEB SITE National Communications Commission (NCC): http://www.ncc.gov.
PAGE 21
RN4020 9.0 ORDERING INFORMATION Table 9-1 provides ordering information for the RN4020 module. TABLE 9-1: ORDERING INFORMATION Part Number RN4020-V/RM Note: Description Standard firmware (GATT, GAP, L2CAP) peripheral and Central mode For custom applications, contact Microchip representative. Go to http://www.microchip.com for current pricing and a list of distributors carrying Microchip products. Go to http://www.microchip.com/RN4020 for latest RN4020 firmware update.
PAGE 22
RN4020 NOTES: DS50002279B-page 22  2015 Microchip Technology Inc.
PAGE 23
RN4020 APPENDIX A: REVISION HISTORY Revision A (June 2014) This is the initial released version of the document in the Microchip format. Revision B (September 2015) This revision includes the following updates: • Updated information for single operating voltage from 3.0V to 3.6V to show 1.8V to 3.6V on page 1. • Updated Figure 1-2 to change pin names for pin numbers 10, 11, 12, 19, 21 and 22. • Updated Figure 1-3 to include current inputs and outputs.
PAGE 24
RN4020 NOTES: DS50002279B-page 24  2015 Microchip Technology Inc.
PAGE 25
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 26
RN4020 NOTES: DS50002279B-page 26  2015 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
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