ADT7518
 
Rev. A | Page 27 of 40 
Table 13. Interrupt Status 2 Register 
D7  
D6  
D5  
D4      D3  
D2  
D1  
D0  
N/A  
N/A  
N/A  
0* 
N/A  
N/A  
N/A  
N/A  
*Default settings at power-up. 
Table 14. 
Bit    Function  
D4  
1 when VDD value is greater than its corresponding VHIGH 
limit. 1 when VDD is less than or equal to its corresponding 
VLOW limit. 
 
Internal Temperature Value/V
DD
 Value Register LSBs (Read-
Only) [Address = 03h] 
This 8-bit read-only register stores the two LSBs of the 10-bit 
temperature reading from the internal temperature sensor and 
the two LSBs of the 10-bit supply voltage reading.  
Table 15. Internal Temperature/VDD LSBs 
D7  
D6  
D5  
D4  
D3      D2  
D1      D0  
N/A  
N/A  
N/A  
N/A  
V1  
LSB  
T1  
LSB  
N/A  
N/A  
N/A  
N/A  
0* 
0* 
0* 
0* 
*Default settings at power-up 
Table 16. 
Bit  
Function  
D0  
LSB of Internal Temperature Value 
D1  
B1 of Internal Temperature Value 
D2  
LSB of VDD Value  
D3  
B1 of VDD Value  
 
External Temperature Value and Analog Inputs 1 to 4 
Register LSBs (Read-Only) [Address = 04h]  
This is an 8-bit read-only register. Bits D2:D7 store the two LSBs 
of the analog inputs AIN2 to AIN4. Bits D0:D1 store the two 
LSBs of either the external temperature value or AIN1 input 
value. The type of input for D0 and D1 is selected by Bits C1:C2 
of the Control Configuration Register 1. 
Table 17. External Temperature and AIN1 to AIN4 LSBs 
D7      D6  
D5      D4  
D3      D2  
D1  
D0  
A4      A4LSB      A3      A3LSB      A2      A2LSB      T/A      T/ALSB  
0* 
0* 
0* 
0* 
0* 
0* 
0* 
0* 
*Default settings at power-up 
Table 18. 
Bit      Function  
D0      LSB of External Temperature Value or AIN1 Value 
D1      Bit 1 of External Temperature Value or AIN1 Value 
D2      LSB of AIN2 Value 
D3      Bit 1 of AIN2 Value 
D4      LSB of AIN3 Value 
D5      Bit 1 of AIN3 Value 
D6      LSB of AIN4 Value 
D7      Bit 1 of AIN4 Value  
 
V
DD
 Value Register MSBs (Read-Only) [Address = 6h] 
This 8-bit read-only register stores the supply voltage value. The 
eight MSBs of the 10-bit value are stored in this register. 
Table 19. VDD Value MSBs 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
V9  
V8  
V7  
V6  
V5  
V4  
V3  
V2  
x* 
x* 
x* 
x* 
x* 
x* 
x* 
x* 
*Loaded with V
DD
 value after power-up. 
Internal Temperature Value Register MSBs (Read-Only) 
[Address = 07h] 
This 8-bit read-only register stores the internal temperature 
value from the internal temperature sensor in twos complement 
format. The eight MSBs of the 10-bit value are stored in this 
register. 
Table 20. Internal Temperature Value MSBs 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
T9  
T8  
T7  
T6  
T5  
T4  
T3  
T2  
0* 
0*  
0*  
0*  
0*  
0*  
0*  
0*  
*Default settings at power-up 
External Temperature Value or Analog Input AIN1 Register 
MSBs (Read-Only) [Address = 08h] 
This 8-bit read-only register stores, if selected, the external 
temperature value or the analog input AIN1 value. Selection is 
done in the Control Configuration 1 register. The external 
temperature value is stored in twos complement format. The 
eight MSBs of the 10-bit value are stored in this register. 
Table 21. External Temperature Value/Analog Inputs MSBs 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
T/A9     T/A8     T/A7     T/A6     T/A5     T/A4     T/A3     T/A2  
0*  
0*  
0*  
0*  
0*  
0*  
0*  
0*  
*Default settings at power-up 
AIN2 Register MSBs (Read) [Address = 09h] 
This 8-bit read register contains the eight MSBs of the AIN2 
analog input voltage word. The value in this register is com-
bined with Bits D2:3 of the external temperature value and 
Analog Inputs 1 to 4 register LSBs, Address 04h, to give the full 
10-bit conversion result of the analog value on the AIN2 pin. 
Table 22. AIN2 MSBs 
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
MSB  
A8  
A7  
A6  
A5  
A4  
A3  
A2  
0*  
0*  
0*  
0*  
0*  
0*  
0*  
0*  
*Default settings at power-up 
AIN3 Register MSBs (Read) [Address = 0Ah] 
This 8-bit read register contains the eight MSBs of the AIN3 
analog input voltage word. The value in this register is com-
bined with Bits D4:5 of the external temperature value and 
Analog Inputs 1 to 4 register LSBs, Address 04h, to give the full 
10-bit conversion result of the analog value on the AIN3 pin.