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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F818-E/ML датащи(PDF) 57 Page - Microchip Technology |
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PIC16F818-E/ML датащи(HTML) 57 Page - Microchip Technology |
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57 / 176 page  2004 Microchip Technology Inc. DS39598E-page 55 PIC16F818/819 EXAMPLE 6-1: CHANGING THE PRESCALER ASSIGNMENT FROM TIMER0 TO WDT EXAMPLE 6-2: CHANGING THE PRESCALER ASSIGNMENT FROM WDT TO TIMER0 TABLE 6-1: REGISTERS ASSOCIATED WITH TIMER0 BANKSEL OPTION_REG ; Select Bank of OPTION_REG MOVLW b'xx0x0xxx' ; Select clock source and prescale value of MOVWF OPTION_REG ; other than 1:1 BANKSEL TMR0 ; Select Bank of TMR0 CLRF TMR0 ; Clear TMR0 and prescaler BANKSEL OPTION_REG ; Select Bank of OPTION_REG MOVLW b'xxxx1xxx' ; Select WDT, do not change prescale value MOVWF OPTION_REG CLRWDT ; Clears WDT and prescaler MOVLW b'xxxx1xxx' ; Select new prescale value and WDT MOVWF OPTION_REG CLRWDT ; Clear WDT and prescaler BANKSEL OPTION_REG ; Select Bank of OPTION_REG MOVLW b'xxxx0xxx' ; Select TMR0, new prescale MOVWF OPTION_REG ; value and clock source Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR, BOR Value on all other Resets 01h,101h TMR0 Timer0 Module Register xxxx xxxx uuuu uuuu 0Bh,8Bh, 10Bh,18Bh INTCON GIE PEIE TMR0IE INTE RBIE TMR0IF INTF RBIF 0000 000x 0000 000u 81h,181h OPTION_REG RBPU INTEDG T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111 Legend: x = unknown, u = unchanged, - = unimplemented locations read as ‘0’. Shaded cells are not used by Timer0. |
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