BTM41 datasheet(9/18 Pages) BUDDIES

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BTM41 DATASHEET

3.1 Pin Description

Pin#

Pin Name

Pad Type

Description

GND

Ground

Digital Ground

SPI_CSB

Input with weak internal pull-up

Chip select for Serial Peripheral Interface

(SPI),active low

PIO_2

Bi-directional with programmable

strength internal pull-up/down

Programmable input/output line

PIO_3

Bi-directional with programmable

strength internal pull-up/down

Programmable input/output line

RESETB

CMOS input with weak internal

pull-up

Active LOW reset

SPI_CLK Input with weak internal pull-down

SPI clock

PCM_CLK

Bi-directional with weak internal

pull-down

Synchronous data clock

PCM_SYNC

Bi-directional with weak internal

pull-down

Synchronous data sync

PCM_IN

CMOS input, with weak internal

pull-down

Synchronous data input

PCM_OUT

CMOS output, tri-state, with weak

internal pull-down

Synchronous data output

+3V3

Power Supply

Positive supply for BT Module(3.0V~3.6V)

GND

Ground

Digital Ground

AIO_0

Bi-directional

VDD/Low-voltage regulator output

Analogue programmable input/ output line

circuitry and 1.5V regulated output (from

internal low-voltage regulator)

GND

Ground

Digital Ground

PIO_11

Bi-directional with programmable

strength internal pull-up/down

Programmable input/output line

PIO_5

Bi-directional with programmable

strength internal pull-up/down

Programmable input/output line

PIO_4

Bi-directional with programmable

strength internal pull-up/down

Programmable input/output line

PIO_6

Bi-directional with programmable

strength internal pull-up/down

Programmable input/output line

GND

Ground

Digital Ground

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