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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F87X датащи(PDF) 58 Page - Microchip Technology |
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PIC16F87X датащи(HTML) 58 Page - Microchip Technology |
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58 / 218 page  PIC16F87X DS30292C-page 56 2001 Microchip Technology Inc. 7.1 Timer2 Prescaler and Postscaler The prescaler and postscaler counters are cleared when any of the following occurs: • a write to the TMR2 register • a write to the T2CON register • any device RESET (POR, MCLR Reset, WDT Reset, or BOR) TMR2 is not cleared when T2CON is written. 7.2 Output of TMR2 The output of TMR2 (before the postscaler) is fed to the SSP module, which optionally uses it to generate shift clock. TABLE 7-1: REGISTERS ASSOCIATED WITH TIMER2 AS A TIMER/COUNTER 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 0Bh,8Bh, 10Bh,18Bh INTCON GIE PEIE T0IE INTE RBIE T0IF INTF RBIF 0000 000x 0000 000u 0Ch PIR1 PSPIF(1) ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000 8Ch PIE1 PSPIE(1) ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000 11h TMR2 Timer2 Module’s Register 0000 0000 0000 0000 12h T2CON — TOUTPS3 TOUTPS2 TOUTPS1 TOUTPS0 TMR2ON T2CKPS1 T2CKPS0 -000 0000 -000 0000 92h PR2 Timer2 Period Register 1111 1111 1111 1111 Legend: x = unknown, u = unchanged, - = unimplemented, read as '0'. Shaded cells are not used by the Timer2 module. Note 1: Bits PSPIE and PSPIF are reserved on the PIC16F873/876; always maintain these bits clear. |
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