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.