RN4020-V/RM123

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 mm x 19.5 mm x 2.5 mm Castellated SMT pads for easy and reliable PCB mounting Environmentally friendly, RoHS compliant Certifications: FCC, ISED, 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, I2C 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  2014-2022 Microchip Technology Inc. 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 provides a highly integrated solution for delivering low-power Bluetooth 4.1 solutions. The advanced command interface offers rapid time to market. The RN4020 module complies with Bluetooth specification version 4.1. The module integrates RF, a baseband controller, and a command 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. DS50002279D-page 1 RN4020 Table of Contents 1.0 Device Overview........................................................................................................................................................................... 3 2.0 General Specifications.................................................................................................................................................................. 6 3.0 Microcontroller to RN4020 Interface ............................................................................................................................................. 7 4.0 Physical Dimensions .................................................................................................................................................................... 8 5.0 Typical Application Schematic .................................................................................................................................................... 11 6.0 ASCII Command API .................................................................................................................................................................. 12 7.0 Supported Services .................................................................................................................................................................... 13 8.0 Regulatory Approval ................................................................................................................................................................... 15 9.0 Ordering Information................................................................................................................................................................... 21 Appendix A: Revision History ............................................................................................................................................................... 23 The Microchip Web Site ....................................................................................................................................................................... 25 Customer Change Notification Service ................................................................................................................................................ 25 Customer Support ................................................................................................................................................................................ 25 TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors@microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: http://www.microchip.com You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000). Errata An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision of silicon and revision of document to which it applies. To determine if an errata sheet exists for a particular device, please check with one of the following: • Microchip’s Worldwide Web site; http://www.microchip.com • Your local Microchip sales office (see last page) When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products. DS50002279D-page 2  2014-2022 Microchip Technology Inc. RN4020 FIGURE 1-2: 8$57B7; 569' 8$57B5; 3:03,2 5763,2 &0'0/'3 63,3,2      *1' :$.(B+: :$.(B6:  FIGURE 1-3:   *1'  6'$ 3,2/CTS  $,2     6&/ 3,20,62  $,2   9'' 3,2026,3:0 RN4020 TOP VIEW $,2   *1' 3,2&63:0  *1' 3,26&.3:0 FIGURE 1-1:   The RN4020 Bluetooth Low Energy RF module integrates Bluetooth 4.1 radio baseband, MCU, digital analog I/O, on-board stack, and ASCII command API. Figure 1-1 shows the top view of the module. The pinout of the module is shown in Figure 1-2, and the description is presented in Table 1-1. Figure 1-3 lists all the key components of the module. RN4020 PIN DIAGRAM  DEVICE OVERVIEW  1.0 RN4020 BLOCK DIAGRAM RN4020 Bluetooth© 4.1 Low Energy Module High-Performance Integrated Antenna UART Interface UART Radio 3x Analog I/O 4 PWM I/O, I2C Comm. 10-bit ADC GPIO 128b AES Encryption 64KB serial Flash for User profiles and scripts Modem BTLE v 4.1 Core with BT SIG Certified Firmware GATT/GAP 1.8 – 3.6V VReg Crystal  2014-2022 Microchip Technology Inc. DS50002279D-page 3 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. If the module runs without a host microInput; weak pull down controller, connect the UART_RX pin to VDD via a 10K resistor to conserve power in Deep Sleep. 8 CMD/MLDP Command or MLDP mode – In Command mode, UART traffic is sent to the command interpreter. In MLDP mode, UART traffic is routed to the MLDP Bluetooth® LED connection, if active. Input; Edge triggered; Change from High to Low to enter CMD mode from MLDP mode 9 GND Ground Ground 10 CONNECTION LED PIO[1] SCK PWM1 Default state is output. Active-high indicates the module is connected to a remote device. Active-low indicates a disconnected state. Configurable as PIO[1] via software command. SCK for Diagnostics and Factory Calibration if pin 17 is asserted. • Connection Status Indicator (Green LED) • PIO[1] • SCK • PWM1 11 MLDP_EV PIO[2] CS PWM2 Default function is output used for MLDP data event indicator (Red LED). Active-high indicates MLDP data received or UART console data pending. Low level indicates no events. Event is only triggered in MLDP mode, when CMD/MLDP (pin 8) is high. Configurable as PIO[2] via “|I” and “|O” commands. CS for Diagnostics and Factory Calibration if pin 17 is asserted. • MLDP Data Indicator (Red LED) • PIO[2] • CS • PWM2 12 WS PIO[3] MOSI PWM3 Default function is an output used for Activity Indicator (Blue LED). High level indicates module is awake and active. Low level indicates module is in a Sleep state. Accessible as PIO[3] via “|>” and “| Certifications) at: • https://www.microchip.com/en-us/product/ RN4020 DS50002279D-page 20  2014-2022 Microchip Technology Inc. RN4020 9.0 ORDERING INFORMATION The following table 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.  2014-2022 Microchip Technology Inc. DS50002279D-page 21 RN4020 NOTES: DS50002279D-page 22  2014-2022 Microchip Technology Inc. RN4020 APPENDIX A: REVISION HISTORY • Updated Figure 5-1. • Updated Section 6.0 “ASCII Command API” to add information for GAP Role, MLDP, IO, and Scripting functions. • Added a Note in Table 7-1. • Updated Section 8.0 “Regulatory Approval” to add the regulatory information for Japan, Korea, and Taiwan. • Minor updates to text and formatting have been incorporated throughout the document. 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. Revision C (March 2021) • Updated Figure 1-2 to change pin names for pin numbers 10, 11, 12, 19, 21 and 22. This revision includes the following updates: • Updated Figure 1-3 to include current inputs and • Changed Master to Host in Section 1.0 “Device outputs. Overview” and Section 6.0 “ASCII Command • Updated Table 1-1 for changes in pin names, API” description, and functions. • Added Section 8.1.3 “Approved Antenna” • Added a Note in Table 2-1. • Updated Section 8.2.1 “Labeling and User • Added Table 2-5. Information Requirements” • Added a Note in Figure 3-1. • Updated Section 8.2.3 “Approved External Antenna Types” • Updated Figure 4-2. • Updated Section 8.3 “Europe” • Updated Figure 4-4. Note 1: Microchip is aware that some terminologies used in the technical documents and existing software codes of this product are outdated and unsuitable. This document may use these new terminologies, which may or may not reflect on the source codes, software GUIs, and the documents referenced within this document. The following table shows the relevant terminology changes made in this document TABLE 0-1: TERMINOLOGY RELATED CHANGES Old Terminology Master New Terminology Host Description • Section 1.0 “Device Overview” was updated with the new terminology. • Section 6.0 “ASCII Command API” was updated with the new terminology. Revision D (June 2022) This revision includes the following changes: TABLE D-1: MAJOR SECTION UPDATES Section Update Description Section 8.9 “UKCA (UK Conformity Assessed)” Added UKCA regulatory approval information. Section 8.10 “China” Added SRRC regulatory approval information.  2014-2022 Microchip Technology Inc. DS50002279D-page 23 RN4020 NOTES: DS50002279D-page 24  2014-2022 Microchip Technology Inc. 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. 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