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PIC16F526-I/P 数据表(PDF) 38 Page - Microchip Technology |
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PIC16F526-I/P 数据表(HTML) 38 Page - Microchip Technology |
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38 / 122 page  PIC16F526 DS41326D-page 38 2010 Microchip Technology Inc. FIGURE 7-2: TIMER0 TIMING: INTERNAL CLOCK/NO PRESCALE FIGURE 7-3: TIMER0 TIMING: INTERNAL CLOCK/PRESCALE 1:2 TABLE 7-1: REGISTERS ASSOCIATED WITH TIMER0 Addr Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on Power-On Reset Value on All Other Resets 01h TMR0 Timer0 – 8-bit Real-Time Clock/Counter xxxx xxxx uuuu uuuu 08h CM1CON0 C1OUT C1OUTEN C1POL C1T0CS C1ON C1NREF C1PREF C1WU 1111 1111 uuuu uuuu 0Bh CM2CON0 C2OUT C2OUTEN C2POL C2PREF2 C2ON C2NREF C2PREF1 C2WU 1111 1111 uuuu uuuu N/A OPTION RBWU RBPU T0CS T0SE PSA PS2 PS1 PS0 1111 1111 1111 1111 N/A TRIS(1) — — I/O Control Register (PORTB, PORTC) --11 1111 --11 1111 Legend: Shaded cells are not used by Timer0. – = unimplemented, x = unknown, u = unchanged. Note 1: The TRIS of the T0CKI pin is overridden when T0CS = 1. PC – 1 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Instruction Fetch Timer0 PC PC + 1 PC + 2 PC + 3 PC + 4 PC + 6 T0 T0 + 1 T0 + 2 NT0 NT0 + 1 NT0 + 2 MOVWF TMR0 MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W Write TMR0 executed Read TMR0 reads NT0 Read TMR0 reads NT0 Read TMR0 reads NT0 Read TMR0 reads NT0 + 1 Read TMR0 reads NT0 + 2 Instruction Executed PC + 5 PC (Program Counter) PC – 1 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Instruction Fetch Timer0 PC PC + 1 PC + 2 PC + 3 PC + 4 PC + 6 T0 T0 + 1 NT0 NT0 + 1 MOVWF TMR0 MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W MOVF TMR0,W Write TMR0 executed Read TMR0 reads NT0 Read TMR0 reads NT0 Read TMR0 reads NT0 Read TMR0 reads NT0 + 1 Read TMR0 reads NT0 + 2 Instruction Executed PC + 5 PC (Program Counter) |
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