7411(2017) 데이터 시트보기 (PDF) - Analog Devices

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7411
(Rev.:2017)

SPI-/I2C-Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC

Analog Devices 

Data Sheet

ADT7411

Table 9.

Bit Function

D0 1 when internal temperature value exceeds THIGH limit.

Any internal temperature reading greater than the set

limit causes an out-of-limit event.

D1 1 when internal temperature value exceeds TLOW limit.

Any internal temperature reading less than or equal to

the set limit causes an out-of-limit event.

D2 This status bit is linked to the configuration of Pin 7 and

Pin 8. If configured for external temperature sensor, this bit

is 1 when external temperature value exceeds THIGH limit.

The default value for this limit register is –1°C, so any external

temperature reading greater than the limit set causes an

out-of-limit event. If configured for AIN1 and AIN2, this bit is

1 when the AIN1 input voltage exceeds VHIGH or VLOW limits.

D3 1 when external temperature value exceeds TLOW limit.

The default value for this limit register is 0°C, so any

external temperature reading less than or equal to the

limit set causes an out-of-limit event.

D4 1 indicates a fault (open or short) for the external temp sensor.

D5 1 when AIN2 voltage is greater than corresponding VHIGH

limit. 1 when AIN2 voltage is less than or equal to

corresponding VLOW limit.

D6 1 when AIN3 voltage is greater than corresponding VHIGH

limit. 1 when AIN3 voltage is less than or equal to

corresponding VLOW limit.

D7 1 when AIN4 voltage is greater than corresponding VHIGH

limit. 1 when AIN4 voltage is less than or equal to

corresponding VLOW limit.

Interrupt Status 2 Register (Read-Only) [Address = 01h]

This 8-bit read-only register reflects the status of the VDD and

AIN5 to AIN8 interrupts that can cause the INT/INT pin to go

active. This register is reset by a read operation provided that any

out-of-limit event is corrected. It is also reset by a software reset.

Table 10. Interrupt Status 2 Register

D7

D6

D5

D4 D3 D2 D1 D0

N/A N/A N/A 01

01

01

01

01

1 Default settings at power-up.

Table 11.

Bit Function

D0

1 when AIN5 voltage is greater than the corresponding

VHIGH limit. 1 when AIN5 voltage is less than or equal to

the corresponding VLOW limit.

D1

1 when AIN6 voltage is greater than the corresponding

VHIGH limit. 1 when AIN6 voltage is less than or equal to

the corresponding VLOW limit.

D2

1 when AIN7 voltage is greater than the corresponding

VHIGH limit. 1 when AIN7 voltage is less than or equal to

the corresponding VLOW limit.

D3

1 when AIN8 voltage is greater than the corresponding

VHIGH limit. 1 when AIN8 voltage is less than or equal to

the corresponding VLOW limit.

D4

1 when VDD value is greater than the corresponding

VHIGH limit. 1 when VDD is less than or equal to the

corresponding VLOW limit.

D5:D7 Reserved

Internal Temperature Value/VDD Value Register LSBs

(Read-Only) [Address = 03h]

This internal temperature value and VDD value register is an

8-bit read-only register. It stores the two LSBs of the 10-bit

temperature reading from the internal temperature sensor and

also the two LSBs of the 10-bit supply voltage reading.

Table 12. 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 01 01

01

01

1 Default settings at power-up.

Table 13.

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 AIN1 to AIN4 Register

LSBs (Read-Only) [Address = 04h]

This is an 8-bit read-only register. Bit D2 to Bit D7 store the two

LSBs of the analog inputs AIN2 to AIN4. Bit D0 and Bit D1 are

used to 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 Bit 1 and Bit 2 of the Control Configuration 1 register.

Table 14. External Temperature and AIN1to AIN4 LSBs

D7 D6

D5 D4

D3 D2

D1 D0

A4 A4LSB A3 A3LSB A2 A2LSB T/A T/ALSB

01

01

01

01

01

01

01

01

1 Default settings at power-up.

Table 15.

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

Rev. C | Page 21 of 36

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