W83791G Nuvoton Technology Corporation of America, W83791G Datasheet - Page 33
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W83791G
Manufacturer Part Number
W83791G
Description
IC MONITOR H/W 48-LQFP
Manufacturer
Nuvoton Technology Corporation of America
Datasheet
1.W83791G.pdf
(99 pages)
Specifications of W83791G
Function
Hardware Monitor
Topology
ADC
Sensor Type
External
Sensing Temperature
External Sensor
Output Type
I²C™
Output Alarm
Yes
Output Fan
Yes
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
W83791G
Manufacturer:
NXP
Quantity:
6 000
Company:
Part Number:
W83791G
Manufacturer:
Nuvoton Technology Corporation of America
Quantity:
10 000
Part Number:
W83791G
Manufacturer:
WINBOND/华邦
Quantity:
20 000
Note. The IRQ interrupt action like SMI#, but the IRQ is level signal.
6.8.6
(1) Comparator Mode:
Temperature exceeding T
(Figure 13)
(2) Interrupt Mode:
Temperature exceeding T
temperature sensor 1 or sensor 2 or sensor 3 registers. Temperature exceeding T
and then temperature going below T
reading temperature sensor 1 or sensor 2 or sensor 3 registers. Once the OVT# is activated by
exceeding T
again. ( Figure 13)
(3) ACPI Mode
At this mode, temperature exceeding one level of temperature separation, starting from 0 degree,
causes the OVT# output activated. OVT# will be activated again once temperature exceeds the next
level. OVT# output will act the same manner when temperature goes down. (Figure 13-1)
T
SMI#
HYST
T
OI
Over-Temperature (OVT#) for W83791D/G temperature sensor 1/2/3
Figure 12-3. Comparator Interrupt Mode
O
, then reset, if the temperature remains above T
*
*
O
O
causes the OVT# output activated until the temperature is less than T
SMI#
causes the OVT# output activated indefinitely until reset by reading
T
T
HYST
*
OI
*Interrupt Reset when Interrupt Status Registers are read
Figure 12-5. One-Time Interrupt Mode
*
*Interrupt Reset when Interrupt Status Registers are read
HYST
will also cause the OVT# activated indefinitely until reset by
*
*
- 27 -
SMI#
T
T
HYST
OI
Figure 12-4. Two-Times Interrupt Mode
HYST
Publication Release Date: April 14, 2006
, the OVT# will not be activated
*
*
W83791D/G
O
, then OVT# reset,
*
Revision 1.1
*
HYST
.