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PIC17C44-08/P датащи(PDF) 70 Page - Microchip Technology |
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PIC17C44-08/P датащи(HTML) 70 Page - Microchip Technology |
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70 / 240 page ![]() PIC17C4X DS30412C-page 70 © 1996 Microchip Technology Inc. FIGURE 11-5: TMR0 READ/WRITE IN TIMER MODE TABLE 11-1: REGISTERS/BITS ASSOCIATED WITH TIMER0 Address 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 (Note1) 05h, Unbanked T0STA INTEDG T0SE T0CS PS3 PS2 PS1 PS0 — 0000 000- 0000 000- 06h, Unbanked CPUSTA — — STKAV GLINTD TO PD — — --11 11-- --11 qq-- 07h, Unbanked INTSTA PEIF T0CKIF T0IF INTF PEIE T0CKIE T0IE INTE 0000 0000 0000 0000 0Bh, Unbanked TMR0L TMR0 register; low byte xxxx xxxx uuuu uuuu 0Ch, Unbanked TMR0H TMR0 register; high byte xxxx xxxx uuuu uuuu Legend: x = unknown, u = unchanged, - = unimplemented read as a '0', q - value depends on condition, Shaded cells are not used by Timer0. Note 1: Other (non power-up) resets include: external reset through MCLR and the Watchdog Timer Reset. Instruction executed MOVFP DATAL,TMR0L Write TMR0L MOVFP DATAH,TMR0H Write TMR0H MOVPF TMR0L,W Read TMR0L MOVPF TMR0L,W Read TMR0L MOVPF TMR0L,W Read TMR0L Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 AD15:AD0 ALE WR_TRM0L WR_TMR0H RD_TMR0L TMR0H TMR0L 12 12 13 AB FE FF 56 57 58 In this example, old TMR0 value is 12FEh, new value of AB56h is written. Instruction fetched MOVFP DATAL,TMR0L Write TMR0L MOVFP DATAH,TMR0H Write TMR0H MOVPF TMR0L,W Read TMR0L MOVPF TMR0L,W Read TMR0L MOVPF TMR0L,W Read TMR0L MOVPF TMR0L,W Read TMR0L Previously Fetched Instruction |
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