Datasheet BM78 (Microchip) - 2

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BM78 General Description
The BM78 module is a fully-certified Bluetooth module for customers to easily add dual-mode Bluetooth wire- less capability to their products. The BM78 module is built around Microchip’s IS1678 Bluetooth dual-mode SoC, and it is available in ROM-based (BM78SPPx- 5NC2) and Flash-based (BM78SPPx5MC2) versions. Refer to
9.0 “Ordering Information”
for additional information on the BM78 Stock Keeping Units (SKUs). The BM78 module bridges the customer products to smart phones or tablets for convenient data transfer, control, access to cloud applications and delivering the local connectivity for IoT. The BM78 module supports GAP, SDP, SPP, and GATT profiles. Data transfer is achieved through the Bluetooth link by sending or receiving data through Transparent UART mode, mak- ing it easy to integrate with any microprocessor or microcontroller with the UART interface. It also enables an easy configuration by using a UI tool, a Windows- based utility, or directly through UART by MCUs.  2016-2020 Microchip Technology Inc. DS60001380C-Page 2 Document Outline BM78 Features RF/Analog Data Throughput FIGURE 1: BM78 MODULE MAC/Baseband/Higher Layer Operating Conditions Applications General Description Table of Contents Most Current Data Sheet Errata Customer Notification System 1.0 System Overview FIGURE 1-1: Internal Block Diagram of BM78 module TABLE 1-1: Pin Description FIGURE 1-2: BM78SPPS5MC2/NC2 Pin Diagram FIGURE 1-3: BM78SPP05MC2/NC2 Pin Diagram 2.0 Application Information 2.1 System Configuration TABLE 2-1: System Configuration Settings 2.2 Control and Indication I/O Pins TABLE 2-2: CONTROL AND INDICATION I/O PIN ASSIGNMENTS TABLE 2-3: CONFIGURABLE FUNCTIONS AND DESCRIPTIONS 2.3 Status Indication I/O Pins TABLE 2-4: Status Indication 2.4 Power Tree FIGURE 2-1: Power Tree Diagram 2.5 Software Power Button (SW_BTN) FIGURE 2-2: SW_BTN TIMING (HIGH) at Application MODE FIGURE 2-3: SW_BTN TIMING at Access States FIGURE 2-4: SW_BTN TIMING (Low) at Link States 2.6 WAKE-UP FIGURE 2-5: Wake-up Time 2.7 External Reset FIGURE 2-6: Timing waveforms on Reset 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 BM78 module 2.10 Reference Circuit FIGURE 2-9: BM78SPP05MC2/NC2 Reference Circuit FIGURE 2-10: BM78SPP05MC2/NC2 Reference Circuit FIGURE 2-11: BM78SPPS5MC2/NC2 Reference Circuit FIGURE 2-12: BM78SPPS5MC2/NC2 Reference Circuit 3.0 Operating Modes FIGURE 3-1: Operating Mode Configuration 3.1 Auto Pattern Mode FIGURE 3-2: Auto Pattern Mode 3.2 Manual Pattern FIGURE 3-3: State Changes by MCU in Manual Pattern 4.0 Electrical Characteristics Absolute Maximum Ratings TABLE 4-1: Recommended Operating Conditions TABLE 4-2: 3.3V LDO Electrical Parameters TABLE 4-3: PMU LDO TABLE 4-4: SAR-ADC AND Battery Voltage Detector TABLE 4-5: Intensity Controllable LED Driver TABLE 4-6: Power Consumption-Classic TABLE 4-7: Power Consumption-Low Energy 5.0 Radio Characteristics TABLE 5-1: Transmitter Performance TABLE 5-2: Receiver Performance 6.0 Physical Dimensions FIGURE 6-1: BM78SPPS5MC2/NC2 Module Dimensions FIGURE 6-2: BM78SPPS5MC2/NC2 Recommended PCB Footprint FIGURE 6-3: BM78SPPS5MC2/NC2 Host PCB Mounting Suggestion FIGURE 6-4: BM78SPP05MC2/NC2 Module Dimensions FIGURE 6-5: BM78SPP05MC2/NC2 Recommended PCB Footprint FIGURE 6-6: BM78SPP05MC2/NC2 Host PCB Mounting Suggestion 7.0 Reflow Profile Module FIGURE 7-1: Reflow Profile 8.0 Module Placement Guidelines FIGURE 8-1: Module Placement Examples TABLE 8-1: Recommended Antenna FIGURE 8-2: Keep Out Area Recommended for Antenna 8.1 BM78SPPS5MC2/NC2 Ceramic Chip Antenna FIGURE 8-3: BM78SPPS5MC2/NC2 Antenna Radiation Pattern TABLE 8-2: Antenna Radiation Pattern Details 9.0 Ordering Information TABLE 9-1: BM78 Module SKUs Appendix A: Certification Notices TABLE A-1: EUROPEAN COMPLIANCE TESTING Appendix B: Revision History The Microchip WebSite Trademarks Worldwide Sales