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HT7M2136 датащи(PDF) 23 Page - Holtek Semiconductor Inc

номер детали HT7M2136
подробное описание детали  PIR Detector Miniaturized Module
PDF  25 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT7M2136 датащи(HTML) 23 Page - Holtek Semiconductor Inc

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Rev. 1.20
23
June 17, 2016
HT7M2126/27/36/56/76
if (ack)
i2c_ack();
//send ACK
else
i2c_nack();
//send ACK
return receive;
}
/********************************************************************
* Function Name: i2c_wait_ack
* Return Value: 1:get ack success ,0:get ack failed
* Parameters:
* Description: wait ack from i2c bus
********************************************************************/
unsigned char i2c_wait_ack ()
{
uint8 ucErrTime=0;
SDA_IN();
IIC_SDA=1;_delay(1);
IIC_SCL_H();//IIC_SCL=1;
_delay(1);
while(READ_SDA)
{
ucErrTime++;
if(ucErrTime>50)
{
IIC_Stop();
return 1;
}
_delay(1);
}
IIC_SCL_L();
//IIC_SCL=0;
return 0;
}
/********************************************************************
* Function Name: i2c_ack
* Return Value:
* Parameters:
* Description: generate ack to i2c bus
********************************************************************/
void i2c_ack()
{
IIC_SCL_L();
//IIC_SCL=0;
SDA_OUT();
IIC_SDA=0;
_delay(2);
IIC_SCL_H();
//IIC_SCL=1;
_delay(2);
IIC_SCL_L();
//IIC_SCL=0;
}
/********************************************************************
* Function Name: i2c_ nack
* Return Value:
* Parameters:
* Description: generate nack to i2c bus
********************************************************************/



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