ADT7420
THYST SETPOINT REGISTER
This 8-bit read/write register stores the temperature hysteresis
value for the THIGH, TLOW, and TCRIT temperature limits. The
temperature hysteresis value is stored in straight binary format
using four LSBs. Increments are possible in steps of 1°C from
0°C to 15°C. The value in this register is subtracted from the
THIGH and TCRIT values and added to the TLOW value to imple-
ment hysteresis.
Preliminary Technical Data
ID REGISTER
This 8-bit read-only register stores the manufacturer ID in Bit 3
to Bit 7 and the silicon revision in Bit 0 to Bit 2.
Table 18. THYST Setpoint Register (Register Address 0x0A)
Bit
Default Value Type Name Description
[3:0]
0101
R/W THYST Hysteresis value, from 0°C to 15°C. Stored in straight binary format. The default setting is 5°C.
[7:4]
0000
R/W N/A Not used.
Table 19. ID Register (Register Address 0x0B)
Bit
Default Value Type Name
[2:0]
XXX
R
Revision ID
[7:3]
11001
R
Manufacture ID
Description
Contains the silicon revision identification number
Contains the manufacture identification number
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