GMS82512/16/24
HYUNDAI MicroElectronics
RESET VECTOR
YES
PFS =1
NO
RAM CLEAR
INITIALIZE RAM DATA
PFS = 0
Skip the
initial routine
INITIALIZE ALL PORTS
INITIALIZE REGISTERS
FUNTION
EXECUTION
Figure 19-2 Example S/W of RESET flow by Power fail
V
DD
V
V
MAX
PFD
V
MIN
PFD
64mS
Internal
RESET
V
DD
MAX
PFD
V
MIN
PFD
When PFR = 1
64mS
Internal
RESET
t <64mS
V
DD
V
V
MAX
PFD
MIN
PFD
64mS
Internal
RESET
Figure 19-3 Power Fail Processor Situations
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FEB. 2000 Ver 1.00