Intel 530 LF80537NE0301M Data Sheet

22

Datasheet

The processor supports the THERMTRIP# signal for catastrophic thermal protection. An 

external thermal sensor should also be used to protect the processor and the system 

against excessive temperatures. Even with the activation of THERMTRIP#, which halts 

all processor internal clocks and activity, leakage current can be high enough that the 

processor cannot be protected in all conditions without power removal to the processor. 

If the external thermal sensor detects a catastrophic processor temperature of 125 °C 

(maximum), or if the THERMTRIP# signal is asserted, the V

CC

 supply to the processor 

must be turned off within 500 ms to prevent permanent silicon damage due to thermal 

runaway of the processor. THERMTRIP# functionality is not guaranteed if the 

PWRGOOD signal is not asserted.

All RESERVED (RSVD) pins must remain unconnected. Connection of these pins to V

CC

, 

V

SS

, or to any other signal (including each other) may result in component malfunction 

or incompatibility with future processors. See 

 for a pin listing of the 

processor and the location of all RSVD pins.

For reliable operation, always connect unused inputs or bidirectional signals to an 

appropriate signal level. Unused active low AGTL+ inputs may be left as no connects if 

AGTL+ termination is provided on the processor silicon. Unused active high inputs 

should be connected through a resistor to ground (V

SS

). Unused outputs can be left 

unconnected. 

The TEST1 and TEST2 pins must have a stuffing option of separate pull-down resistors 

to V

SS

. 

For the purpose of testability, route the TEST3 and TEST5 signals through a ground-

referenced Zo = 55-Ω trace that ends in a via that is near a GND via and is accessible 

through an oscilloscope connection.

1

1

1

0

1

0

0

0.0500

1

1

1

0

1

0

1

0.0375

1

1

1

0

1

1

0

0.0250

1

1

1

0

1

1

1

0.0125

1

1

1

1

0

0

0

0.0000

1

1

1

1

0

0

1

0.0000

1

1

1

1

0

1

0

0.0000

1

1

1

1

0

1

1

0.0000

1

1

1

1

1

0

0

0.0000

1

1

1

1

1

0

1

0.0000

1

1

1

1

1

1

0

0.0000

1

1

1

1

1

1

1

0.0000