BM78_V01 datasheet(6/60 Pages) MICROCHIP

部品番号	BM78

部品情報	Bluetooth® Dual-Mode Module

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BM78

DS60001380B-Page 6

 2016-2019 Microchip Technology Inc.

Table 1-1

provides

various

pins

of

the

BM78SPPx5MC2/NC2 module.

TABLE 1-1:

PIN DESCRIPTION

S5 Pin

05 Pin

Symbol

Type

Description

1

—

GND

Power

Ground reference

2

—

GND

Power

Ground reference

3

1

GND

Power

Ground reference

4

2

BAT_IN

Power

Battery input (3.3V to 4.2V)

Main positive supply input

Connect to 10 μF (X5R/X7R) capacitor

5

3

SW_BTN

DI

Software Power Button H: Power On



L: Power Off

6

4

LDO33_O

Power

Internal 3.3V LDO output, cannot source more than



50 mA

7

5

VDD_IO

Power

I/O positive supply input. Internal use only, do not con-

nect to other devices

8

6

LDO18_O

Power

Internal 1.8V LDO output. Internal use only, do not con-

nect to other devices

9

7

WAKE_UP

DI

Wake up from Sleep mode (active-low) (internal pull up)

10

8

PMULDO_O

Power

Power Management Unit (PMU) output. Internal use

only, do not connect to other devices

11

9

P0_4

DO

Status Indication pin, refer to Table 2-4

12

10

P1_5

DO

Status Indication pin, refer to Table 2-4

13

11

P1_2/SCL

DO

I2C SCL

14

12

P1_3/SDA

DIO

I2C SDA

15

13

P1_7

DIO

Configurable control or Indication pin or

UART CTS (input)

16

14

P0_5

DIO

Configurable control or Indication pin

17

15

P0_0

DIO

Configurable control or Indication pin or

UART RTS (output)

18

16

P2_0

DI

System configuration pin along with P2_4 and EAN

pins, used to set the BM78 module in any one of the fol-

lowing three modes:

• Application mode (for normal operation),

• Test mode (to change EEPROM values), and

• Write Flash mode (to download the firmware into

the module), refer to Table 2-1

19

17

P2_4

DI

System configuration pin along with P2_0 and EAN

pins, used to set the BM78 module in any one of the fol-

lowing three modes:

• Application mode (for normal operation),

• Test mode (to change EEPROM values), and

• Write Flash mode (to download the firmware into

the module), refer to Table 2-1

Legend:

A = Analog

D = Digital

I = Input

O = Output

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