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PIC12F683 Datasheet(PDF) 48 Page - Microchip Technology |
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PIC12F683 Datasheet(HTML) 48 Page - Microchip Technology |
48 / 148 page PIC12F683 DS41211B-page 46 Preliminary 2004 Microchip Technology Inc. 7.2 Timer2 Interrupt The Timer2 module has an 8-bit period register, PR2. Timer2 increments from 00h until it matches PR2 and then resets to 00h on the next increment cycle. PR2 is a readable and writable register. The PR2 register is initialized to FFh upon Reset. FIGURE 7-1: TIMER2 BLOCK DIAGRAM TABLE 7-1: REGISTERS ASSOCIATED WITH TIMER2 Comparator TMR2 Sets Flag TMR2 Output Reset Postscaler Prescaler PR2 2 FOSC/4 1:1 to 1:16 1:1, 1:4, 1:16 EQ 4 bit TMR2IF TOUTPS<3:0> T2CKPS<1:0> Addr Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Value on POR, BOD Value on all other Resets 0Bh/ 8Bh INTCON GIE PEIE T0IE INTE GPIE T0IF INTF GPIF 0000 0000 0000 0000 0Ch PIR1 EEIF ADIF CCP1IF — CMIF OSFIF TMR2IF TMR1IF 000- 0000 000- 0000 11h TMR2 Holding Register for the 8-bit TMR2 Register 0000 0000 0000 0000 12h T2CON — TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000 8Ch PIE1 EEIE ADIE CCP1IE — CMIE OSFIE TMR2IE TMR1IE 000- 0000 000- 0000 92h PR2 Timer2 Module Period Register 1111 1111 1111 1111 Legend: x = unknown, u = unchanged, — = unimplemented, read as ‘0’. Shaded cells are not used by the Timer2 module. |
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