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GMS81032 Datasheet(PDF) 89 Page - Hynix Semiconductor |
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GMS81032 Datasheet(HTML) 89 Page - Hynix Semiconductor |
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89 / 101 page  7 - 5 Chapter7. Reset Function * SRAM BACK-UP after Low Voltage Detection. 3.0V 1.8V(TYP) ( 20¡É) * SRAM Data Backup User Removes Batteries User Replace Batteries Interrupt : disable Stop release : disable All I/O port : input Mode Remout port : Low Level OSC : STOP All I/O port pull-up ON (Mask Option ) SRAM Data retention * The operation after Low voltage detection about hours depend on Vcc-Gnd Capacitor 0V Low Voltage Detection point MCU OPR. Voltage Power On Reset ( SRAM unstable ) Power On Reset ( SRAM retention) 0.7V(VRET) * S/W flow chart example after Reset using SRAM Back-up RESET Stack Pointer initialize SRAM DATA IS VALID? Check the SRAM value (RAM Pattern, Check sum..) N Y Clear All Ram area Use saved SRAM value |
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