ADM1031ARQZ-R7 ON Semiconductor, ADM1031ARQZ-R7 Datasheet - Page 28

• Manufacturer Part Number: ADM1031ARQZ-R7
• Description: IC SENSOR 2TEMP/FAN CTRL 16QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1031ARQZ-R7

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 100°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 24. Register 0y25 Remote 1 Temp T
Table 25. Register 0y26 Remote 2 Temp T
Table 26. Register 0y3F THERM Behavior/Revision Power−On Default = 80H
<7:3>
<2:0>
<7:3>
<2:0>
<3:0>
<7>
Bit
Bit
Bit
Remote 1 Temp T
Remote 2 Temp T
THERM−to−Fan En
Remote 1 Temp
Remote 2 Temp
Revision
T
T
Name
Name
Name
RANGE
RANGE
MIN
MIN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
MIN
MIN
Contains the minimum temperature value for automatic fan speed control based on
local temperature readings. T
increments. Default is 32°C.
This nibble contains the temperature range value for automatic fan speed control
based on the Remote 1 Temp Readings.
Contains the minimum temperature value for automatic fan speed control based on
Remote 2 Temperature Readings. T
4°C increments. Default is 32°C.
This nibble contains the temperature range value for automatic fan speed control
based on the Remote 2 Temp Readings.
Setting this bit to 1, enables the fan to run full−speed when THERM is asserted low.
This allows the system to be run in performance mode. Clearing this bit to 0 disables
the fan from running full−speed whenever THERM is asserted low. This allows the
system to run in silent mode. (Power−On Default = 1).
This nibble contains the revision number for the ADM1031.
00000 = 0°C
00001 = 4°C
00010 = 8°C
00011 = 12°C
01100 = 48°C
11110 = 120°C
11111 = 124°C
000 = 5°C
001 = 10°C (Default)
010 = 20°C
011 = 40°C
100 = 80°C
00000 = 0°C
00001 = 4°C
00010 = 8°C
00011 = 12°C
01100 = 48°C (Default)
11110 = 120°C
11111 = 124°C
000 = 5°C
001 = 10°C (Default)
010 = 20°C
011 = 40°C
100 = 80°C
/T
/T
RANGE
RANGE
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http://onsemi.com
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Power−On Default = 61H
Power−On Default = 61H
28
MIN
can be programmed to positive values only in 4°C
MIN
Description
Description
Description
can be programmed to positive values only in