BM20 datasheet(17/46 Pages) MICROCHIP

Part #	BM20

Description	Bluetooth짰 4.1 Stereo Audio Module

PDF	46 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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17 / 46 page

Stereo Module

 2015 Microchip Technology Inc.

Page 17

Preliminary Edition

2.5 EXTERNAL CONFIGURATION

Stereo module can be configured and firmware programmed using an external configuration and

programming tool available from Microchip. Figure 2‐7 shows the configuration and firmware

programming interface on BM23. It is recommended to include a pin header on the main PCB for

development.

Configuration and firmware programming modes are entered accordingly to the system

configuration I/O pins as shown in Table 2-1. Pin P20, P24 and EAN pin have internal pull‐up.

FIGURE 2-13: EXTERNAL PROGRAMMING HEADER CONNECTIONS

(Here is the interface connect example of the BM23)

TABLE 2-1: SYSTEM CONFIGURATION SETTINGS

P20

P24

EAN

Operational Mode

High

APP mode (Normal operation)

Low

High

Test mode (Write EEPROM)

Low

High

Write Flash (Firmware programming if flash build-in in chip)

BM20 Datasheet(PDF) 17 Page - Microchip Technology