ADT7320

Preliminary Technical Data

Rev. PrA | Page 14 of 24

REGISTERS

The ADT7320 contains eight registers:

•

A status register

•

A configuration register

•

Five temperature registers

•

An ID register

The status register, temperature value register, and the ID

register are read-only.

Table 6. ADT7320 Registers

Register Address

Description

Power-On Default

0x00

Status

0x80

0x01

Configuration

0x00

0x02

Temperature value

0x0000

0x03

ID

0xCX

0x04

0x4980 (147°C)

0x05

0x05 (5°C)

0x06

0x2000 (64°C)

0x07

0x0500 (10°C)

STATUS REGISTER

This 8-bit read-only register (Register Address 0x00) reflects the

status of the overtemperature and undertemperature interrupts

that can cause the CT and INT pins to go active. It also reflects

the status of a temperature conversion operation. The interrupt

flags in this register are reset by a read operation to the status

register and/or when the temperature value returns within the

temperature limits including hysteresis. The RDY bit is reset after a

read from the temperature value register. In one-shot and 1 SPS

modes, the RDY bit is reset after a write to the one-shot bits.

Table 7. Status Register (Register Address 0x00)

Bit(s)

Default Value

Type

Name

Description

[0:3]

0000

R

Unused

Reads back 0.

[4]

0

R

clears to 0 when the status register is read and/or when the temperature measured goes

[5]

0

R

clears to 0 when the status register is read and/or when the temperature measured goes

[6]

0

R

clears to 0 when the status register is read and/or when the temperature measured goes

[7]

1

R

RDY

This bit goes low when the temperature conversion result is written into the temperature

value register. It is reset to 1 when the temperature value register is read. In one-shot and

1 SPS modes, this bit is reset after a write to the one-shot bits.