n

n+1

n+2

n+3

n+4

n+5

SAMPLE NUMBER

RDTS Measurement

Status Register: RTDS High

LM86

SNIS114E – DECEMBER 2001 – REVISED MARCH 2013

www.ti.com

Fault Queue

In order to suppress erroneous ALERT or T_CRIT triggering the LM86 incorporates a Fault Queue. The Fault

Queue acts to insure a remote temperature measurement is genuinely beyond a HIGH, LOW or T_CRIT setpoint

by not triggering until three consecutive out of limit measurements have been made, see Figure 14. The fault

queue defaults off upon power-up and may be activated by setting bit D0 in the Configuration register (09h) to

“1”.

Figure 14. Fault Queue Temperature Response Diagram

One-Shot Register

The One-Shot register is used to initiate a single conversion and comparison cycle when the device is in standby

mode, after which the device returns to standby. This is not a data register and it is the write operation that

causes the one-shot conversion. The data written to this address is irrelevant and is not stored. A zero will

always be read from this register.

16

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