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 2.5 mm Castellated SMT pads for easy and reliable PCB mounting Environmentally friendly, RoHS compliant Applications Certifications: FCC, ISED, CE, QDID, VCCI, KCC and NCC Health/Medical Devices - Glucose meters - Heart rate Operational -Scale Single operating voltage: 1.8V to 3.6V (3.3V typical) Sports Activity and Fitness Temperature range: -30C to 85C - Pedometer Low-power consumption - Cycling computer Simple, UART interface - Heart rate 2 Integrated Crystal, I C Interface, Internal Voltage Retail Regulator, Matching Circuitry, and PCB Antenna - Point of Sale (POS) Multiple IOs for control and status - Asset tagging and tracking GPIO, ADC - Proximity advertising Three Pulse Width Modulation (PWM) outputs Beacon Applications Internet of Things (IoT) Sensor tag RF/Analog Features Remote Control - Embedded Device Control ISM Band 2.402 to 2.480 GHz operation Channels 0-39 - AV consoles and game controllers Wearable Smart Devices and Accessories RX Sensitivity: -92.5 dBm at 0.1% BER TX Power: -19.0 dBm to +7.5 dBm Industrial Control - Private (custom) services RSSI Monitor - Low bandwidth cable replacement Smart Energy/Smart Home MAC/Baseband/Higher Layer Features Secure AES128 encryption Description GAP, GATT, SM, L2CAP, and integrated public Microchips RN4020 Bluetooth Low Energy Module pro- profiles vides a highly integrated solution for delivering low-power Create custom services using command API Bluetooth 4.1 solutions. The advanced command inter- Keyboard I/O Authentication face offers rapid time to market. The RN4020 module Software configurable role as peripheral or central and client or server complies with Bluetooth specification version 4.1. The Built-in scripting capabilities for hostless operation 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. 2021 Microchip Technology Inc. DS50002279C-page 1RN4020 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................................................................................................................................................................... 22 Appendix A: Revision History ............................................................................................................................................................... 25 The Microchip Web Site ....................................................................................................................................................................... 27 Customer Change Notification Service ................................................................................................................................................ 27 Customer Support ................................................................................................................................................................................ 27 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. 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