ADT7411ARQZ10 데이터 시트보기 (PDF) - Analog Devices

부품명

상세내역

제조사

ADT7411ARQZ10

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

Analog Devices 

ADT7411

Internal THIGH Limit Register (Read/Write) [Address = 25h]

This limit register is an 8-bit read/write register that stores the

twos complement of the internal temperature upper limit that

will cause an interrupt and activate the INT/INT output (if

enabled). For this to happen, the measured internal temperature

value has to be greater than the value in this register. Because it

is an 8-bit register, the temperature resolution is 1°C. The

default value is +100°C.

Table 42. Internal THIGH Limit

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

0* 1* 1* 0* 0* 1* 0* 0*

*Default settings at power-up.

Internal TLOW Limit Register (Read/Write) [Address = 26h]

This limit register is an 8-bit read/write register that stores the

twos complement of the internal temperature lower limit that

will cause an interrupt and activate the INT/INT output (if

enabled). For this to happen, the measured internal temperature

value has to be more negative than or equal to the value in this

register. Because it is an 8-bit register, the temperature resolu-

tion is 1°C. The default value is −55°C.

Table 43. Internal TLOW Limit

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

1* 1* 0* 0* 1* 0* 0* 1*

*Default settings at power-up.

External THIGH/AIN1 VHIGH Limit Register (Read/Write)

[Address = 27h]

If Pins 7 and 8 are configured for the external temperature

sensor, this limit register is an 8-bit read/write register that

stores the twos complement of the external temperature upper

limit that will cause an interrupt and activate the INT/INT

output (if enabled). For this to happen, the measured external

temperature value has to be greater than the value in this

register. Because it is an 8-bit register, the temperature

resolution is 1°C. The default value is −1°C.

If Pins 7 and 8 are configured for AIN1 and AIN2 single-ended

inputs, this limit register is an 8-bit read/write register that

stores the AIN1 input upper limit that will cause an interrupt

and activate the INT/INT output (if enabled). For this to hap-

pen, the measured AIN1 value has to be greater than the value

in this register. Because it is an 8-bit register, the resolution is

four times less than the resolution of the 10-bit ADC. Since the

power-up default settings for Pins 7 and 8 are AIN1 and AIN2

single-ended inputs, the default value for this limit register is

full-scale voltage.

Table 44. AIN1 VHIGH Limit

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

1* 1* 1* 1* 1* 1* 1* 1*

*Default settings at power-up.

External TLOW/AIN1 VLOW Limit Register (Read/Write)

[Address = 28h]

If Pins 7 and 8 are configured for the external temperature

sensor, this limit register is an 8-bit read/write register that

stores the twos complement of the external temperature lower

limit that will cause an interrupt and activate the INT/INT

output (if enabled). For this to happen, the measured external

temperature value has to be more negative than or equal to the

value in this register. Since it is an 8-bit register, the temperature

resolution is 1°C. The default value is 0°C.

If Pins 7 and 8 are configured for AIN1 and AIN2 single-ended

inputs, this limit register is an 8-bit read/write register that

stores the AIN1 input lower limit that will cause an interrupt

and activate the INT/INT output (if enabled). For this to hap-

pen, the measured AIN1 value has to be less than or equal to the

value in this register. Because it is an 8-bit register the resolution

is four times less than the resolution of the 10-Bit ADC. Since

the power-up default settings for Pins 7 and 8 are AIN1 and

AIN2 single-ended inputs, the default value for this limit

register is 0 V.

Table 45. AIN1 VLOW Limit

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

0* 0* 0* 0* 0* 0* 0* 0*

*Default settings at power-up.

AIN2 VHIGH Limit Register (Read/Write) [Address = 2Bh]

This limit register is an 8-bit read/write register that stores the

AIN2 input upper limit that will cause an interrupt and activate

the INT/INT output (if enabled). For this to happen, the mea-

sured AIN2 value has to be greater than the value in this reg-

ister. Because it is an 8-bit register, the resolution is four times

less than the resolution of the 10-bit ADC. The default value is

full-scale voltage.

Table 46. AIN2 VHIGH Limit

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

1* 1* 1* 1* 1* 1* 1* 1*

*Default settings at power-up.

AIN2 VLOW Limit Register (Read/Write) [Address = 2Ch]

This limit register is an 8-bit read/write register that stores the

AIN2 input lower limit that will cause an interrupt and activate

the INT/INT output (if enabled). For this to happen, the mea-

sured AIN2 value has to be less than or equal to the value in this

register. Because it is an 8-bit register, the resolution is four

times less than the resolution of the 10-bit ADC. The default

value is 0 V.

Table 47. AIN2 VLOW Limit

D7 D6 D5 D4 D3 D2 D1 D0

D7 D6 D5 D4 D3 D2 D1 D0

0* 0* 0* 0* 0* 0* 0* 0*

*Default settings at power-up.

Rev. A | Page 25 of 36

Share Link: