LM80CIMT-3 National Semiconductor, LM80CIMT-3 Datasheet - Page 23

• Manufacturer Part Number: LM80CIMT-3
• Manufacturer: National Semiconductor

Specifications of LM80CIMT-3

• Watchdog Timer: Yes
• Chip Enable Signals: No
• Package Type: TSSOP
• Operating Supply Voltage (min): 2.8V
• Operating Supply Voltage (max): 5.75V
• Operating Temp Range: -25C to 125C
• Operating Temperature Classification: Commercial
• Power Fail Detection: No
• Mounting: Surface Mount
• Pin Count: 24
• Battery Backup Switching: No
• Manual Reset: No
• Lead Free Status / RoHS Status: Not Compliant

Bit
Bit
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
12.4 Interrupt Status Register 1—Address 01h
Power on default <7:0> = 0000 0000 binary
12.5 Interrupt Status Register 2—Address 02h
Power on default <7:0> = 0000 0000 binary
12.6 Interrupt Mask Register 1—Address 03h
Power on default <7:0> = 0000 0000 binary
IN0
IN1
IN2
IN3
IN4
IN5
IN6
INT_IN
Hot Temperature
BTI
FAN1
FAN2
CI (Chassis
Intrusion)
OS bit
Reserved
Reserved
IN0
IN1
IN2
IN3
IN4
IN5
IN6
INT_IN
Name
Name
Name
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Read/Write
Read/Write
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read/Write
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates a High or Low limit has been exceeded.
A one indicates that a Low has been detected on the INT_IN.
A one indicates a High or Low limit has been exceeded. Only “One-Time Interrupt” and
“Default Interrupt” modes are supported. The mode is set by bit-6 of the Interrupt Mask
Register 2.
A one indicates that an interrupt has occurred from the Board Temperature Interrupt (BTI)
input pin. BTI can be tied to the OS output of multiple LM75 chips.
A one indicates that a fan count limit has been exceeded.
A one indicates that a fan count limit has been exceeded.
A one indicates CI (Chassis Intrusion) has gone high.
A one indicates a High or a Low OS Temperature limit has been exceed. Only “One-Time
Interrupt” and “Default Interrupt” modes are supported (see Sections 7.2 and 8.2). The mode
is set by bit-7 of the Interrupt Mask Register 2.
23
Description
Description
Description
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