MIC284_05 Datasheet, PDF (13/20 Pages) Micrel Semiconductor – Two-Zone Thermal Supervisor

MIC284
Micrel, Inc.
Event
Condition* *
MIC284 response *
high temperature, remote
TEMP1 > T_SET1
set S1 in CONFIG, assert /IN T
high temperature, local
TEMP0 > T_SET0
set S0 in CONFIG, assert /IN T
low temperature, remote
TEMP1 > T_HYST1
set S1 in CONFIG, assert /IN T
low temperature, local
TEMP0 > T_HYST0
set S0 in CONFIG, assert /IN T
over-temperatue, remote
TEMP1 > CRIT1
set CRIT in CONFIG, assert /CRIT
NOT over-temperature,
remote
TEMP1 > nCRIT1
clear CRIT in CONFIG, de-assert /CRIT
diode fault
T1 open or T1 shorted to VDD or GND
set CRIT and S1 in CONFIG, assert /INT
and /CRIT***
* Assumes interrupts enabled
** Condition must be true for FAULT_QUEUE conversion to be recognized
*** Assumes the T_SET1 and CRIT1 are set yo any value less then +127° C = 7f_h = 0111 1111_b
Table 5. MIC284 Temperature Events
September 2005
13
MIC284