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C8051F300 Datasheet(PDF) 85 Page - List of Unclassifed Manufacturers |
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C8051F300 Datasheet(HTML) 85 Page - List of Unclassifed Manufacturers |
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85 / 174 page  C8051F300/1/2/3/4/5 Rev. 2.6 85 SFR Definition 9.1. RSTSRC: Reset Source (Note: Do not use read-modify-write operations (ORL, ANL) on this register) Bit7: UNUSED. Read = 0. Write = don’t care. Bit6: FERROR: Flash Error Indicator. 0: Source of last reset was not a Flash read/write/erase error. 1: Source of last reset was a Flash read/write/erase error. Bit5: C0RSEF: Comparator0 Reset Enable and Flag. Write 0: Comparator0 is not a reset source. 1: Comparator0 is a reset source (active-low). Read 0: Source of last reset was not Comparator0. 1: Source of last reset was Comparator0. Bit4: SWRSF: Software Reset Force and Flag. Write 0: No Effect. 1: Forces a system reset. Read 0: Source of last reset was not a write to the SWRSF bit. 1: Source of last was a write to the SWRSF bit. Bit3: WDTRSF: Watchdog Timer Reset Flag. 0: Source of last reset was not a WDT timeout. 1: Source of last reset was a WDT timeout. Bit2: MCDRSF: Missing Clock Detector Flag. Write: 0: Missing Clock Detector disabled. 1: Missing Clock Detector enabled; triggers a reset if a missing clock condition is detected. Read: 0: Source of last reset was not a Missing Clock Detector timeout. 1: Source of last reset was a Missing Clock Detector timeout. Bit1: PORSF: Power-On Reset Force and Flag. This bit is set anytime a power-on reset occurs. This may be due to a true power-on reset or a VDD monitor reset. In either case, data memory should be considered indeterminate fol- lowing the reset. Writing this bit enables/disables the VDD monitor. Write: 0: VDD monitor disabled. 1: VDD monitor enabled. Read: 0: Last reset was not a power-on or VDD monitor reset. 1: Last reset was a power-on or VDD monitor reset; all other reset flags indeterminate. Bit0: PINRSF: HW Pin Reset Flag. 0: Source of last reset was not /RST pin. 1: Source of last reset was /RST pin. R R R/W R/W R R/W R/W R Reset Value — FERROR C0RSEF SWRSF WDTRSF MCDRSF PORSF PINRSF Variable Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address: 0xEF |
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