AMIS-30624 Datasheet, PDF (24/56 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30624 I²C Microstepping Motordriver
Data Sheet
15.2.5. Temperature Management
The AMIS-30624 monitors temperature by means of two thresholds and one shutdown level, as illustrated in the Figure 15. The only
condition necessary to reset flags <TW> and <TSD> (respectively thermal warning and thermal shutdown) is when the temperature is
lower than T_tw causing the occurrence of a GetFullStatus1 I²C frame.
T° < T_low
<Tinfo> = '01'
<TW> = '0'
<TSD> = '0'
PC20070219.1
LOW
TEMP
<Tinfo> = '01'
<TW> = '0'
<TSD> = '0'
T° > T_low
T° < Ttw
& I²C frame
<GetFullStatus1>
<Tinfo> = '01'
<TW> = '0'
<TSD> = '0'
POST
THERMAL
SHUTDOWN
2
<Tinfo> = '01'
<TW> = '0'
<TSD> = '0'
NORMAL
TEMP
T° < Ttw
& I²C frame
<GetFullStatus1>
POST
THERMAL
WARNING
T° > Ttw
<Tinfo> = '01'
<TW> = '0'
<TSD> = '0'
T° < T_tw
THERMAL
WARNING
T° > Ttw
T° > T_tsd
T° > Ttw
T° < T_tw
<Tinfo> = '01'
<TW> = '0'
<TSD> = '0'
POST
THERMAL
SHUTDOWN
1
T° > T_tsd
T° < Ttsd
Figure 15: State Diagram Temperature Management
THERMAL
SHUTDOWN
Tinfo> = '01'
TW> = '0'
TSD> = '0'
AMI Semiconductor – Apr. 2007, Rev 3.1, M-20664-003
24
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