Datasheet > HT7M2127

HT7M2127

更新时间： 2022-02-26 11:08:45

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		/
页数	文件大小	规格书
25页	4237K
描述
PIR Detector Miniaturized Module

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中文翻译

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数据手册

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HT7M2127 数据手册

HT7M2126/27/36/56/76

Mode Selection

The MODE/ACT (MODE/DT) pin is used to select the Network or Stand�alone mode. When a pull�low resistor is

externally connected between the MODE/ACT (MODE/DT) pin to the ground, the Stand�alone mode is selected.

Otherwise, the Network mode is selected if a pull�high resistor or no resistor is externally on this pin.

Network Application Circuit – Network Mode

VDD

FTS

HT7M21xx

Photo transistor

SCL

SDA

150K

MCU

I²C Interface

VSS

MODE/ACT

Interface & Pin Assignment – Network Mode

Pin #

Function

VSS

Description

Negative power supply, GND

Positive power supply

VDD

SDA

Serial Data Input/Output for I²C interface

Serial Clock Input for I²C interface

Photo transistor signal

SCL

FTS

VSS

Negative power supply, GND

Mode Selection/Motion Detection Output

No connection (Test pin)

MODE/ACT

TP1

Note: When the HT7M21xx selects Network mode and the internal enable bit ACTEN is high, the MODE/ACT

pin will output a high pulse signal with a width of 30 seconds.

Stand-alone Application Circuit – Stand-alone Mode

VDD

VCC

VDD

FTS

Photo transistor

150K

VSS

STATUS

TRO

MODE/ACT

R^A=1.8K

R^T

HT7M21xx

CT=0.22uF

Rev. 1.20

June 17, 2016

123 4 5 6 7...25

中文翻译

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