Datasheet RN4677 (Microchip) - 8

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RN4677
Figure 1-4 and Figure 1-5 show the recommended bypass capacitor location and values. Capacitors can be low ESR ceramic and must be placed closely to the RN4677 module.
FIGURE 1-4: RN4677 TO MCU INTERFACE EXAMPLE - LDO
(3.3V) VIN LDO RN4677 Module MCU BAT_IN P15/STATUS_IND_1 I/O VDD (3.2 P04/STATUS_IND_2 I/O Note 1 10uF – 4.3V) SW_BTN I/O NC LDO33_O WAKEUP I/O RST_N I/O P37 I/O VDD_IO (Note 1) P34 I/O (2.8 – 3.63V) P33 I/O P32 I/O NC LDO18_O Note 2 P31 I/O P05 I/O P00/RTS CTS P17/CTS RTS NC PMULDO_O TXD RX RXD TX P12/SCL NC LED1 P13/SDA NC P36 NC P20 P24 EAN Note: 1. Ensure VDD_IO and MCU VDD voltages are compatible. System Configuration 2. Control and indication ports are configurable.
FIGURE 1-5: RN4677 TO MCU INTERFACE EXAMPLE - BATTERY
Li-ion Battery (3.7V) (3.3V) LDO RN4677 Module MCU BAT_IN P15/STATUS_IND_1 I/O VDD (3.2 10uF – 4.3V) P04/STATUS_IND_2 I/O Note 1 SW_BTN I/O LDO33_O WAKEUP I/O RST_N I/O 10uF P37 I/O VDD_IO (Note 1) P34 I/O (2.8 – 3.63V) P33 I/O P32 I/O NC LDO18_O Note 2 P31 I/O P05 I/O P00/RTS CTS P17/CTS RTS NC PMULDO_O TXD RX RXD TX P12/SCL NC LED1 P13/SDA NC P36 NC P20 P24 EAN Note: 1. Ensure VDD_IO and MCU VDD voltages are compatible. System Configuration 2. Control and indication ports are configurable. DS50002370A-page 8
Advance Information
 2015 Microchip Technology Inc. Document Outline Bluetooth® 4.0 Dual Mode Module Features Operational RF/Analog Data Throughput MAC/Baseband/Higher Layer Antenna Compliance General Description Applications Table of Contents Most Current Data Sheet Errata Customer Notification System 1.0 Device Overview TABLE 1-1: RN4677 Module Family Types FIGURE 1-1: RN4677 Block Diagram 1.1 Interface Description FIGURE 1-2: RN4677 PIN Diagram FIGURE 1-3: RN4677U PIN Diagram TABLE 1-2: PIN Description 1.2 Configuring the RN4677 1.3 UART Interface 1.4 Control and Indication I/O Pins TABLE 1-3: Configuration And Indication I/O Assignments 1.5 Status Indication I/O Pins TABLE 1-4: Status Indication 1.6 Software Button (SW_BTN) 1.7 WAKE UP (WAKEUP) 1.8 RESET (RST_N) 1.9 Status LED (LED1) 1.10 System Configuration 1.11 Power TABLE 1-5: system configuration settings FIGURE 1-4: RN4677 To MCU Interface Example - LDO FIGURE 1-5: RN4677 To MCU Interface Example - Battery 1.12 Mounting Details 1.13 Soldering Recommendations FIGURE 1-6: RN4677 Module Dimensions FIGURE 1-7: RN4677 Recommended PCB Footprint FIGURE 1-8: RN4677 Host PCB Mounting Suggestion 2.0 Application Information 2.1 RN4677 Ceramic Chip Antenna FIGURE 2-1: RN4677 Antenna Radiation Pattern 2.2 External Configuration and Programming FIGURE 2-2: External Programming Header Connections 3.0 Regulatory Approval 3.1 United States 3.1.1 LABELING AND USER INFORMATION REQUIREMENTS 3.1.2 RF EXPOSURE 3.1.3 HELPFUL WEB SITES 3.2 Canada 3.2.1 LABELING AND USER INFORMATION REQUIREMENTS 3.2.2 RF EXPOSURE 3.2.3 APPROVED EXTERNAL ANTENNA TYPES 3.2.4 HELPFUL WEB SITES 3.3 Europe 3.3.1 LABELING AND USER INFORMATION REQUIREMENTS 3.3.2 EXTERNAL ANTENNA REQUIREMENTS 3.3.3 HELPFUL WEB SITES TABLE 3-1: European Compliance Testing 4.0 Electrical Characteristics TABLE 4-1: Environmental Conditions TABLE 4-2: Electrical Characteristics TABLE 4-3: Supply Consumption-Classic(1) TABLE 4-4: Supply Consumption-low Energy(1) TABLE 4-5: UART Baud 5.0 Ordering Information TABLE 5-1: Ordering Information Appendix A: Revision History Revision A (May 2015) The Microchip Web Site Customer Change Notification Service Customer Support Product Identification System Worldwide Sales and Service