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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F722-E/ML датащи(PDF) 124 Page - Microchip Technology |
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PIC16F722-E/ML датащи(HTML) 124 Page - Microchip Technology |
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124 / 302 page  PIC16F72X/PIC16LF72X DS41341E-page 124 © 2009 Microchip Technology Inc. 12.11 Timer1 Control Register The Timer1 Control register (T1CON), shown in Register 12-1, is used to control Timer1 and select the various features of the Timer1 module. REGISTER 12-1: T1CON: TIMER1 CONTROL REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 TMR1CS1 TMR1CS0 T1CKPS1 T1CKPS0 T1OSCEN T1SYNC —TMR1ON bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-6 TMR1CS<1:0>: Timer1 Clock Source Select bits 11 = Timer1 clock source is Capacitive Sensing Oscillator (CAPOSC) 10 = Timer1 clock source is pin or oscillator: If T1OSCEN = 0: External clock from T1CKI pin (on the rising edge) If T1OSCEN = 1: Crystal oscillator on T1OSI/T1OSO pins 01 = Timer1 clock source is system clock (FOSC) 00 = Timer1 clock source is instruction clock (FOSC/4) bit 5-4 T1CKPS<1:0>: Timer1 Input Clock Prescale Select bits 11 = 1:8 Prescale value 10 = 1:4 Prescale value 01 = 1:2 Prescale value 00 = 1:1 Prescale value bit 3 T1OSCEN: LP Oscillator Enable Control bit 1 = Dedicated Timer1 oscillator circuit enabled 0 = Dedicated Timer1 oscillator circuit disabled bit 2 T1SYNC: Timer1 External Clock Input Synchronization Control bit TMR1CS<1:0> = 1X 1 = Do not synchronize external clock input 0 = Synchronize external clock input with system clock (FOSC) TMR1CS<1:0> = 0X This bit is ignored. Timer1 uses the internal clock when TMR1CS<1:0> = 1X. bit 1 Unimplemented: Read as ‘0’ bit 0 TMR1ON: Timer1 On bit 1 = Enables Timer1 0 = Stops Timer1 Clears Timer1 Gate flip-flop |
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