ADT7317ARQZ-REEL71 查看數據表（PDF） - Analog Devices

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ADT7317ARQZ-REEL71

±0.5°C Accurate Digital Temperature Sensor and Quad Voltage Output 12-/10-/8-Bit DACs

Analog Devices 

ADT7316/ADT7317/ADT7318

INTERRUPTS

The measured results from the internal temperature sensor,

external temperature sensor, and the VDD pin are compared with

the THIGH/VHIGH (greater than comparison) and TLOW/VLOW (less

than or equal to comparison) limits. An interrupt occurs if the

measurement exceeds or equals the limit registers. These limits

are stored in on-chip registers. Note that the limit registers are

8 bits long, while the conversion results are 10 bits long. If the

limits are not masked out, then any out-of-limit comparisons

generate flags that are stored in the Interrupt Status 1 register

S/W RESET

INTERRUPT

STATUS

REGISTER 1

(TEMP AND EXT.

DIODE CHECK)

(Address 0x00) and the Interrupt Status 2 register (Address

0x01). One or more out-of-limit results cause the INT/INT output

to pull either high or low depending on the output polarity

setting. It is good design practice to mask out interrupts for

channels that are of no concern to the application.

Figure 45 shows the interrupt structure for the ADT7316/

ADT7317/ADT7318. It shows a block diagram of how the

various measurement channels affect the INT/INT pin.

INTERNAL

TEMP

EXTERNAL

TEMP

WATCHDOG

LIMIT

COMPARISONS

INTERRUPT

STATUS

REGISTER 2

(VDD)

INTERRUPT

MASK

REGISTERS

VDD

DIODE

FAULT

INT/INT

(LATCHED OUTPUT)

READ RESET

CONTROL

CONFIGURATION

REGISTER 1

INT/INT

ENABLE BIT

Figure 45. ADT7316/ADT7317/ADT7318 Interrupt Structure

Rev. B | Page 26 of 44

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