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PC8374L Datasheet(PDF) 183 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC8374L
Description  SensorPathTM SuperI/O with Glue Functions
PDF  239 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC8374L Datasheet(HTML) 183 Page - National Semiconductor (TI)

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8.0 Health Management (HM) (Continued)
Revision 1.1
183
www.national.com
8.5.68 Zone3 Absolute Temperature Limit
Location: 6Ch
Type:
R/W or RO (Becomes read-only when LOCK bit in the Configuration register is set.)
8.5.69 Zone1, Zone2 Hysteresis
Location: 6Dh
Type:
R/W or RO (Becomes read-only when LOCK bit in the Configuration register is set.)
8.5.70 Zone3 Hysteresis
Location: 6Eh
Type:
R/W or RO (Becomes read-only when LOCK bit in the Configuration register is set.)
8.5.71 Zone1 Auto Speed Range and FANPWM1 Frequency
Location: 5Fh
Type:
R/W or RO (Becomes read-only when LOCK bit in the Configuration register is set.)
Bit
76543210
Name
ZTEMP_ABS
Reset
01100100
Bit
Description
7-0
ZTEMP_ABS. Same as ZTEMP_ABS in Zone1 Absolute Temperature Limit register, but for Zone3.
Bit
76543210
Name
HYST1
HYST2
Reset
0
1
0
0
0
1
0
0
Bit
Description
7-4
HYST1. Selects the temperature value of the hysteresis used to process the associated zone temperature when
the temperature is lower than the low limit set in Zone1 Temperature Limit register.
If the temperature falls from above the Limit to below it, the fan remains at the minimum FANPWM duty cycle
until the temperature has fallen an hysteresis amount below the Limit.
Value
Description
0d:
No hysteresis
1d-15d:
Hysteresis of 1
°Cto15°C (default = 4°C)
3-0
HYST2. Same as HYST1, but for Zone2.
Bit
76543210
Name
HYST3
Reserved
Reset
01000100
Bit
Description
7-4
HYST3. Same as HYST1 in Zone1, Zone2 Hysteresis register, but for Zone3.
3-0
Reserved.
Bit
76543210
Name
RANGE
FREQ
Reset
11000100
Winbond Electronics Corp. Advanced PC Product Center



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