Datasheet RN4678 (Microchip)

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RN4678 Bluetooth® Dual-Mode Module Features
• Bluetooth® Classic (BR/EDR) and Low Energy (LE) • Certified to FCC, ISED, MIC, KCC, NCC, and SRRC Radio Regulations • European Radio Equipment Directive (RED) Assessed Radio Module • Qualified for Bluetooth SIG v5.0 Core Specification • Transparent UART mode for Seamless Serial Data over Bluetooth Classic using Serial Port Profile (SPP), and Bluetooth Low Energy (BLE) using Generic Attribute (GATT) Profile • Easily Programmable through ASCII Commands and Easily Configurable with Available PIC® MCU Driver Library
MAC/Baseband/Higher Layer Features
• Firmware can be Upgraded in the Field over • Secure AES128 Encryption UART (Flash version) • Bluetooth Classic: GAP, SPP, SDP, RFCOMM and • Integral Chip Antenna (RN4678) L2CAP • Integrated Crystal, Internal Voltage Regulator, and • Bluetooth Low Energy: GAP, GATT, ATT, SMP Matching Circuitry and L2CAP • Available Configurable I/O Pins for Control or Status Indication
Applications
• Supports Apple® iPod® Accessory Protocol • Internet of Things (IoT) (iAP2) (only RN4678APL) • Secure Payment • Supports Bluetooth LE Secure Connections • Home and Security • Bluetooth LE Data Packet Length Extension • Health and Fitness • Smal and Compact Surface Mount Module • Industrial and Data Logger • Castellated SMT Pads for Easy and Reliable PCB • LED Lighting (16 configurations) Mounting
Description
• Ideal for Portable Battery-Operated Devices The RN4678 module is a fully certified, Bluetooth v5.0
RF/Analog
compliant (BR/EDR/LE) Dual-mode module available • Frequency: 2.402 GHz to 2.480 GHz for customers to easily add Dual-mode Bluetooth • RX Sensitivity: -90 dBm (BR/EDR), -92 dBm (LE) wireless capability to their products. The RN4678 is • Class 2 Output Power (+1.5 dBm typical) built around Microchip’s IS1678 Bluetooth Dual-mode chip. Refer to
Section 8.0 “Ordering Information”
.
Data Throughput
The RN4678 provides a convenient method for cable Data Throughput at 1 Mbps UART Baud Rate: replacement for smartphones or tablets for data • BR/EDR: up to 32 Kbytes/s transfer and control based on the Bluetooth protocols. • LE: up to 7 Kbytes/s Data transfer is achieved through the Bluetooth link by Data Throughput at 115200 bps UART Baud Rate sending or receiving data through SPP in Bluetooth (BT) Classic mode and through Transparent UART in • BR/EDR: up to 10 Kbytes/s the BLE mode. The ASCII interface provides an easy • LE: up to 6 Kbytes/s way to learn the operation and to integrate the module with any microprocessor or microcontroller (MCU) with
Operating Conditions
a UART interface. • Operating Voltage Range: 3.3V to 4.2V • Operating Temperature Range: -20°C to +70°C  2016-2020 Microchip Technology Inc. DS50002519E-page 1 Document Outline RN4678 Features RF/Analog Data Throughput Operating Conditions MAC/Baseband/Higher Layer Features Applications Description Table of Contents Most Current Data Sheet Errata Customer Notification System 1.0 Device Overview FIGURE 1-1: RN4678 Internal Block Diagram TABLE 1-1: PIN Description FIGURE 1-2: RN4678 PIN DIAGRAM 2.0 Application Information 2.1 Module Configuration 2.2 Flow Control 2.3 Control and Indication I/O Pins 2.4 Power Tree FIGURE 2-1: Power Tree Diagram 2.5 Software Button (SW_BTN) FIGURE 2-2: SW_BTN TIME (HIGH) AT APP MODE(1,2) FIGURE 2-3: SW_BTN TIME (LOW) AT ACCESS STATES(1) FIGURE 2-4: SW_BTN TIME (LOW) AT LINK STATES(1,2) 2.6 WAKE-UP FIGURE 2-5: WAKE-UP TIME(1) 2.7 External Reset FIGURE 2-6: TIMING WAVEFORMS ON RESET (1,2) 2.8 LED Driver FIGURE 2-7: LED Driver 2.9 Host MCU Interface over UART FIGURE 2-8: Power and MCU Interface Example for Rn4678 2.10 Reference Circuit FIGURE 2-9: RN4678 Reference Circuit 3.0 Electrical Characteristics Absolute Maximum Ratings TABLE 3-1: Recommended Operating Conditions TABLE 3-2: 3.3V LDO Electrical Parameters (1,2) TABLE 3-3: PMU LDO(1,2) TABLE 3-4: SAR-ADC AND Battery Voltage Detector TABLE 3-5: Intensity Controllable LED Driver TABLE 3-6: Power Consumption-Classic(1) TABLE 3-7: Power Consumption-Low Energy(1,2) 4.0 Radio Characteristics TABLE 4-1: Transmitter Performance (1,2) TABLE 4-2: Receiver Performance(1) 5.0 Physical Dimensions FIGURE 5-1: RN4678 Module Dimensions FIGURE 5-2: RN4678 Recommended PCB Footprint FIGURE 5-3: RN4678 Host PCB Mounting Suggestion 6.0 Reflow profile FIGURE 6-1: Reflow Profile 7.0 Module Placement FIGURE 7-1: Module Placement Examples TABLE 7-1: Recommended Antenna FIGURE 7-2: Keep Out Area Recommended for Antenna 7.1 RN4678 Ceramic Chip Antenna FIGURE 7-3: RN4678 Antenna Radiation Pattern 8.0 Ordering Information TABLE 8-1: Ordering Information 9.0 Regulatory Approval 9.1 United States 9.2 Canada 9.3 Europe TABLE 9-1: EUROPEAN COMPLIANCE TESTING 9.4 Japan 9.5 Korea 9.6 Taiwan 9.7 China 9.8 Other Regulatory Information Appendix A: Revision History The Microchip WebSite Product Identification System Trademarks Worldwide Sales