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STC89LE52RC 数据表(PDF) 104 Page - STCmicro Technology Co,.Ltd |
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STC89LE52RC 数据表(HTML) 104 Page - STCmicro Technology Co,.Ltd |
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104 / 165 page  RCAP2L EQU 0CAH RCAP2H EQU 0CBH TH2 EQU 0CDH TL2 EQU 0CCH ;------------------------------------------------------------------------------------------------------------------ ;Set baud rate auto-relaod value RELOAD_COUNT_HIGH EQU 0FFH ;RELOAD_COUNT_HIGH must be set for 0FFH when the following parameters are used ;RELOAD_COUNT_LOW EQU 0FAH ;SYSclk=22.1184MHz, Baud=115200 ;RELOAD_COUNT_LOW EQU 0EEH ;SYSclk=22.1184MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 0F0H ;SYSclk=20.000MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 0F6H ;SYSclk=12.000MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 0FDH ;SYSclk=11.059MHz, Baud=115200 ;RELOAD_COUNT_LOW EQU 0F7H ;SYSclk=11.059MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 0F8H ;SYSclk=10.000MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 0FBH ;SYSclk=6.000MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 0FCH ;SYSclk=5.000MHz, Baud=38400 ;RELOAD_COUNT_LOW EQU 070H ;SYSclk=11.059MHz, Baud=2400 ;----------------------------------------------------------------------------------------------------- ;calculate auto-reload value ;------------------------------------------------------------------------------------------------------ ;RELOAD=INT(SYSclk/Baud/32+0.5), INT means geting integer part and abandoning fractional part ;change the decimal RELOAD to hexadecimal, and save the value from 1000H subtracting RELOAD into RCAP2H, RCAP2L ;------------------------------------------------------------------------------------------------------ ORG 0000H AJMP MAIN ;------------------------------------------------------------------------------------------------------ ORG 0023H ;RS232 serial port interrupt AJMP UART NOP NOP ;------------------------------------------------------------------------------------------------------- MAIN: MOV SP, #0E0H ACALL Initial_UART ;Initialize serial port MOV R0, #30H ;Send ten characters "0123456789" MOV R2, #10 LOOP: MOV A, R0 ACALL Send_One_Byte ;Send one byte INC R0 DJNZ R2, LOOP WAIT1: SJMP WAIT1 ;dynamic stop 104 |
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