LM93CIMT National Semiconductor, LM93CIMT Datasheet - Page 66

• Manufacturer Part Number: LM93CIMT
• Description: Microprocessor Support IC
• Manufacturer: National Semiconductor

Specifications of LM93CIMT

• Peak Reflow Compatible (260 C): No
• Supply Voltage Max: 3.6V
• Leaded Process Compatible: No
• Supply Voltage Min: 3V
• Operating Temperature Min: 0��C
• Package / Case: 56-TSSOP
• Operating Temperature Max: 85°C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Register
Address
Register
Address
16.0 Registers
16.8.8 Register C3h Zones 1/2 MinPWM and Hysteresis
16.8.9 Register C4h Zones 3/4 MinPWM and Hysteresis
C3h
C4h
Read/
Read/
Write
Write
R/W
R/W
3:0
7:4
3:0
7:4
Bit
Bit
MinPWM and
MinPWM and
Hysteresis
Hysteresis
Zones 1/2
Zones 3/4
Register
Register
(Continued)
Name
Name
MinPWM
MinPWM
FC_TH
FC_TH
Name
Name
Bit 7
Bit 7
R/W
R/W
R/W
R/W
R/W
R/W
Bit 6
Bit 6
This field sets the amount of hysteresis (in degrees
C) that is used by the auto-fan control for zones 1
and 2. This should be set greater than 0 to avoid
unwanted oscillation between two steps in the look-up
table.
This field determines the duty cycle that the auto-fan
control requests for zones 1 and 2 if the temperature
for the given zone falls below the programmed base
temperature for that zone. This field accepts 16
possible values that are mapped to duty cycles
according the table in the Auto-Fan Control section.
This field sets the amount of hysteresis (in degrees
C) that is used by the auto-fan control for zones 3
and 4. This should be set greater than 0 to avoid
unwanted oscillation between two steps in the look-up
table.
This field determines the duty cycle that the auto-fan
control requests for zones 3 and 4 if the temperature
for the given zone falls below the programmed base
temperature for that zone. This field accepts 16
possible values that are mapped to duty cycles
according the table in the Auto-Fan Control section.
MinPWM
MinPWM
Bit 5
Bit 5
66
Bit 4
Bit 4
Description
Description
Bit 3
Bit 3
Bit 2
Bit 2
FC_TH
FC_TH
Bit 1
Bit 1
Bit 0
Bit 0
Default
Default
Value
Value
N/D
N/D