ADT7516 datasheet(30/44 Pages) AD

30 / 44 page

ADT7516/ADT7517/ADT7519

Rev. B | Page 30 of 44

Table 13.

Bit

Function

LSB of internal temperature value.

Bit 1 of internal temperature value.

LSB of VDD value.

Bit 1 of VDD value.

External Temperature Value and Analog Input 1 to

Analog Input 4 Register LSBs (Read-Only) [Address = 0x04]

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.

A4LSB

A3LSB

A2LSB

T/A

T/ALSB

1 Default settings at power-up.

Table 14.

Bit

Function

LSB of external temperature value or AIN1 value.

Bit 1 of external temperature value or AIN1 value.

LSB of AIN2 value.

Bit 1 of AIN2 value.

LSB of AIN3 value.

Bit 1 of AIN3 value.

LSB of AIN4 value.

Bit 1 of AIN4 value.

VDD Value Register MSBs (Read-Only) [Address = 0x06]

This 8-bit read-only register stores the supply voltage value. The

eight MSBs of the 10-bit value are stored in this register.

1 Loaded with VDD value after power-up.

Internal Temperature Value Register MSBs (Read-Only)

[Address = 0x07]

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.

1 Default settings at power-up.

External Temperature Value or Analog Input AIN1

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.

T/A9

T/A8

T/A7

T/A6

T/A5

T/A4

T/A3

T/A2

1 Default settings at power-up.

AIN2 Register MSBs (Read) [Address = 0x09]

This 8-bit read register contains the eight MSBs of the AIN2

analog input voltage word. The value in this register is combined

with Bits[D2:D3] of the external temperature value and Analog

Input 1 to Analog Input 4 register LSBs, Address 0x04, to give the

full 10-bit conversion result of the analog value on the AIN2 pin.

MSB

1 Default settings at power-up.

AIN3 Register MSBs (Read) [Address = 0x0A]

This 8-bit read register contains the eight MSBs of the AIN3

analog input voltage word. The value in this register is combined

with Bits[D4:D5] of the external temperature value and Analog

Input 1 to Analog Input 4 register LSBs, Address 0x04, to give the

full 10-bit conversion result of the analog value on the AIN3 pin.

MSB

1 Default settings at power-up.

AIN4 Register MSBs (Read) [Address = 0x0B]

This 8-bit read register contains the eight MSBs of the AIN4

analog input voltage word. The value in this register is combined

with Bits[D6:D7] of the external temperature value and Analog

Input 1 to Analog Input 4 register LSBs, Address 0x04, to give the

full 10-bit conversion result of the analog value on the AIN4 pin.

MSB

1 Default settings at power-up.

DAC A Register LSBs (Read/Write) [Address = 0x10]

This 8-bit read/write register contains the 4/2 LSBs of the

ADT7516/ADT7517 DAC A word, respectively. The value in

this register is combined with the value in the DAC A register

MSBs and converted to an analog voltage on the VOUT-A pin.

On power-up, the voltage output on the VOUT-A pin is 0 V.

ADT7516

LSB

N/A

1 Default settings at power-up.

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