MC33989PEG Freescale Semiconductor, MC33989PEG Datasheet - Page 60
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MC33989PEG
Manufacturer Part Number
MC33989PEG
Description
SBC-HS
Manufacturer
Freescale Semiconductor
Datasheet
1.MC33989PEG.pdf
(70 pages)
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TYPICAL APPLICATIONS
SUPPLEMENTAL APPLICATION NOTES
How to Recognize and Distinguish the Wake-up Source
60
33989
SBC was in
stop mode
SBC wake-up
Figure 59. Recognize and Distinguish the Wake-up Source
• Idd1_stop over current (>10 mA)
Read WUR ($80)
Read MCR ($00)
Read CAN ($40)
Read IOR ($60)
command sent?
Batfail in MCR
CANWU in CAN
Vsuplow in IOR
Was any SPI
register =»1»?
WUR =XX?
register =»1»?
register=»1»?
Was FWU
enabled?
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
• Power-up
• Wake-up from CAN
• Wake-up from LX
• CS wake-up
• Force wake-up
•
VBAT undervoltage (<6.1 V) leading
a VDD1 undervoltage reset
Analog Integrated Circuit Device Data
Freescale Semiconductor