ADT7301ARTZ-500RL7 Analog Devices Inc, ADT7301ARTZ-500RL7 Datasheet - Page 13

• Manufacturer Part Number: ADT7301ARTZ-500RL7
• Description: IC SENSOR TEMP 13BIT DGT SOT23-6
• Manufacturer: Analog Devices Inc

Specifications of ADT7301ARTZ-500RL7

• Function: Temp Monitoring System (Sensor)
• Topology: ADC, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 150°C
• Output Type: MICROWIRE™, QSPI™, SPI™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.25 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 0.5°C
• Supply Current: 1.6mA
• Supply Voltage Range: 2.7V To 5.25V
• Resolution (bits): 13bit
• Sensor Case Style: SOT-23
• No. Of Pins: 6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADT7301EB - BOARD EVALUATION FOR ADT7301
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: Q2494841C

The following software program shows how to program a
PIC16F873 to communicate with the ADT7301. The
PIC16F873 is configured as an SPI master with the Port A.1 pin
used as CS . Any microchip microcontroller can use this
program by simply exchanging the include file for the device
that is being used.
#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;
do{
}
delay_ms(10);
Output_low(CS);
delay_us(10);
MSByte = SPI_Read(0);
Output_High(CS);
ADC_Temp_Code = make16(MSByte,LSByte);
ADC_Temp_Code_dec = (float)ADC_Temp_Code;
if ((0x2000 & ADC_Temp_Code) == 0x2000)
else
}while(True);
LSByte = SPI_Read(0);
delay_us(10);
{
TempVal = (ADC_Temp_Code_dec - 16384)/32;
}
{
TempVal = (ADC_Temp_Code_dec/32);
}
Rev. A | Page 13 of 16
//Pic is set up as master device.
//Idle state of clock is high.
//Allow time for conversions.
//Pull CS low.
//CS to SCLK set-up time.
//The first byte is clocked in.
//The second byte is clocked in.
//SCLK to CS set-up time.
//Bring CS high.
//16 bit ADC code is stored ADC_Temp_Code.
//Convert to float for division.
//Check sign bit for negative value.
//Conversion formula if negative temperature.
//Conversion formula if positive temperature.
//Temperature value stored in TempVal.
ADT7301