Datasheet BM20, BM23 (Microchip) - 7

link to page 9 link to page 9
BM20/23 Device Overview Figure 1-3. BM20 Module Pin Diagram
The following table provides the pin description of the BM20 module.
Table 1-1. BM20 Module Pin Description Pin Name Pin type Description No.
1 P0_0 I/O I/O pin, default pull-high input (Note 1) • Slide switch detector, active-low • UART TX_IND, active-low 2 EAN I Embedded ROM/External Flash enable H: Embedded; L: External Flash 3 P3_0 I I/O pin, default pull-high input (Note 1) Line-in Detector (default), active-low 4 P2_0 I I/O pin, default pull-high input System Configuration, H: Application L: Base band (Test Mode) © 2019 Microchip Technology Inc.
Datasheet
DS70005406B-page 7 Document Outline Introduction Features RF/Analog Audio processor Audio Codec Peripherals Antenna Compliance Operating Conditions Applications Table of Contents 1. Device Overview 1.1. Interface Description 2. Application Information 2.1. Operation with External MCU 2.2. I2S Mode Application 2.3. RESET (RST_N) 2.4. Status LED (LED1, LED2) 2.5. External Configuration 3. Electrical Characteristics 4. Printed Antenna Information 4.1. Module Radiation Pattern 4.2. Module Placement Rules 5. Reference Circuit 5.1. BM20 Reference Circuit 5.2. BM23 Reference circuit 6. Physical Dimensions 7. Reflow Profile 7.1. Soldering Recommendations 7.2. Packing and Storage Information 8. Ordering Information 9. Certification Notices 9.1. United States 9.1.1. Labeling and User Information Requirements 9.1.2. RF Exposure 9.1.3. Helpful Websites 9.2. Canada 9.2.1. Labeling and User Information Requirements 9.2.2. RF Exposure 9.2.3. Helpful Websites 9.3. Europe 9.3.1. Labeling and User Information Requirements 9.3.2. Conformity Assessment 9.3.3. Simplified EU Declaration of Conformity 9.3.4. Helpful Websites 9.4. Japan 9.4.1. Labeling and User Information Requirements 9.4.2. Helpful Websites 9.5. Korea 9.5.1. Labeling and User Information Requirements 9.5.2. Helpful Websites 9.6. Taiwan 9.6.1. Labeling and User information Requirements 9.6.2. Helpful Websites 9.7. China 9.7.1. Labeling and User Information Requirements 9.8. Brazil 9.9. Mexico 9.9.1. Labeling and User Information Requirements 9.10. Argentina 9.10.1. Labeling and User Information Requirements 9.11. Other Regulatory Jurisdictions 10. Document Revision History The Microchip Website Product Change Notification Service Customer Support Microchip Devices Code Protection Feature Legal Notice Trademarks Quality Management System Worldwide Sales and Service