Datasheet

ADT7310 Data Sheet
Rev. A | Page 14 of 24
REGISTERS
The ADT7310 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. ADT7310 Registers
Register
Address Description
Power-On
Default
0x00 Status 0x80
0x01
Configuration
0x00
0x02 Temperature value 0x0000
0x03 ID 0xCX
0x04 T
CRIT
setpoint 0x4980 (147°C)
0x05 T
HYST
setpoint 0x05 (5°C)
0x06 T
HIGH
setpoint 0x2000 (64°C)
0x07 T
LOW
setpoint 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 tempera-
ture 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
Default
Value Type Name Description
[3:0] 0000 R Unused Reads back 0.
4 0 R T
LOW
This bit is set to 1 when the temperature goes below the T
LOW
temperature limit. The bit clears to 0
when the status register is read and/or when the temperature measured goes back above the limit
set in the T
LOW
+ T
HYST
setpoint registers.
5 0 R T
HIGH
This bit is set to 1 when the temperature goes above the T
HIGH
temperature limit. The bit clears to 0
when the status register is read and/or when the temperature measured goes back below the limit
set in the T
HIGH
− T
HYST
setpoint registers.
6 0 R T
CRIT
This bit is set to 1 when the temperature goes above the T
CRIT
temperature limit. This bit clears to 0
when the status register is read and/or when the temperature measured goes back below the limit
set in the T
CRIT
− T
HYST
setpoint registers.
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.