PCF8563 clock chip clock of 51 single-chip program does not exceed 12MHZ, this procedure has been tried in the 51

PCF8563--C51
............\实验21_PCF8563
............\..............\ASM
............\..............\...\EX
............\..............\...\EX.ASM
............\..............\...\EX.hex
............\..............\...\Ex.LST
............\..............\...\EX.M51
............\..............\...\Ex.OBJ
............\..............\...\EX.Opt
............\..............\...\EX.PLG
............\..............\...\EX.Uv2
............\..............\...\EX_Opt.Bak
............\..............\...\VI2C_ASM.INC
............\..............\C51
............\..............\...\PCF8563.c
............\..............\...\PCF8563.h
............\..............\...\PCF8563.LST
............\..............\...\PCF8563.OBJ
............\..............\...\rtc
............\..............\...\rTC.C
............\..............\...\rtc.hex
............\..............\...\rtc.lnp
............\..............\...\rTC.LST
............\..............\...\RTC.M51
............\..............\...\rTC.OBJ
............\..............\...\rtc.Opt
............\..............\...\RTC.PLG
............\..............\...\rtc.Uv2
............\..............\...\rtc_Opt.Bak
............\..............\...\rtc_Uv2.Bak
............\..............\...\STARTUP.A51
............\..............\...\STARTUP.LST
............\..............\...\STARTUP.OBJ
............\..............\...\VIIC_C51.C
............\..............\...\VIIC_C51.H
............\..............\...\VIIC_C51.LST
............\..............\...\VIIC_C51.OBJ

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