Datasheet BM20, BM23 (Microchip) - 9

link to page 9 link to page 9 link to page 9 link to page 9
BM20/23 Device Overview ...continued Pin Name Pin type Description No.
29 P2_4 I I/O pin, default pull-high input System Configuration L: Boot Mode with P2_0 low combination 30 P0_2 I I/O pin, default pull-high input (Note 1) Play/Pause key (default), active-low 31 P0_3 I/O I/O pin, default pull-high input (Note 1) • REV key (default), active low • Buzzer Signal Output • Out_Ind_1 • Class1 Rx control signal of external RF T/R switch, active-high 32 HCI_TXD O HCI-UART data output 33 HCI_RXD I HCI-UART data input 34 P0_5 I I/O pin, default pull-high input (Note 1) Volume down (default), active-low 35 P2_7 I I/O pin, default pull-high input (Note 1) Volume up key (default), active-low 36 P2_4 I I/O pin, default pull-high input System Configuration, L: Boot Mode with P2_0 low combination 37 GND P Ground pin 38 NC - No Connection 39 NC - No Connection 40 NC - No Connection • I: Input pin • O: Output pin • I/O: Input/Output pin • P: Power pin
Note: 
All I/O pins can be configured using the IS20XXS_UI tool. The following figure illustrates the pin diagram of the BM23 module. © 2019 Microchip Technology Inc.
Datasheet
DS70005406B-page 9 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