GMS81C2112 Datasheet, PDF (88/107 Pages) Hynix Semiconductor – HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C2112/GMS81C2120
RESET VECTOR
PFS =1
YES
NO
RAM CLEAR
INITIALIZE RAM DATA
INITIALIZE ALL PORTS
INITIALIZE REGISTERS
PFS = 0
Skip the
initial routine
FUNTION
EXECUTION
Figure 20-2 Example S/W of RESET flow by Power fail
When PFR = 1
V_DD
Internal
RESET
V_DD
Internal
RESET
V_DD
Internal
RESET
64mS
t <64mS
64mS
64mS
Figure 20-3 Power Fail Processor Situations
V_PFDMAX
V_PFDMIN
V_PFDMAX
V_PFDMIN
V_PFDMAX
V_PFDMIN
82
JUNE. 2001 Ver 1.00