ADT7301ARM

更新时间： 2024-02-18 07:26:27

品牌	Logo	应用领域
亚德诺 - ADI		传感器温度传感器
页数	文件大小	规格书
14页	561K
描述
13-Bit, 0.5C Accurate, MicroPower Digital Temperature Sensor in 6-Lead SOT-23

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数据手册

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ADT7301ARM 数据手册

Preliminary Technical Data

ADT73±1

#include <16F873.h>

#device adc=8

#use delay(clock=4000000)

#fuses NOWDT,XT, PUT, NOPROTECT, BROWNOUT, LVP

#BIT CKP = 0x14.4

#define CS PIN_A1

void main(){

int MSByte,LSByte;

long int ADC_Temp_Code;

float TempVal,ADC_Temp_Code_dec;

setup_spi(spi_master);

CKP = 1;

//Pic is set up as Master device.

//Idle state of clock is high.

do{

delay_ms(10);

//Allow time for conversions.

Output_low(CS);

//Pull CS low.

delay_us(10);

MSByte = SPI_Read(0);

LSByte = SPI_Read(0);

//CS to SCLK setup time.

//The first byte is clocked in.

//The second byte is clocked in.

delay_us(10);

Output_High(CS);

//SCLK to CS setup time.

//Bring CS high.

MSByte = 0x03;

LSByte = 0x20;

ADC_Temp_Code = make16(MSByte,LSByte);

ADC_Temp_Code_dec = (float)ADC_Temp_Code;

//16bit ADC code is stored ADC_Temp_Code.

//Covert to float for division.

if ((0x2000 & ADC_Temp_Code) == 0x2000)

//Check sign bit for negative value.

{

TempVal = (ADC_Temp_Code_dec - 16384)/32;

//Conversion formula if negative temperature.

}

else

{

TempVal = (ADC_Temp_Code_dec/32);

}

}while(True);

//Conversion formula if positive temperature.

//Temperature value stored in TempVal.

}

Rev. PrJ | Page 11 of 14

1...8 9 101112 13 14

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