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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC24F04KA201 датащи(PDF) 103 Page - Microchip Technology |
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PIC24F04KA201 датащи(HTML) 103 Page - Microchip Technology |
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103 / 224 page  © 2009 Microchip Technology Inc. Preliminary DS39937B-page 101 PIC24F04KA201 FAMILY 11.0 TIMER1 The Timer1 module is a 16-bit timer which can operate as a free-running, interval timer/counter. Timer1 can operate in three modes: •16-Bit Timer • 16-Bit Synchronous Counter • 16-Bit Asynchronous Counter Timer1 also supports these features: • Timer Gate Operation • Selectable Prescaler Settings • Timer Operation during CPU Idle and Sleep modes • Interrupt on 16-Bit Period Register Match or Falling Edge of External Gate Signal Figure 11-1 presents a block diagram of the 16-bit Timer1 module. To configure Timer1 for operation: 1. Set the TON bit (= 1). 2. Select the timer prescaler ratio using the TCKPS<1:0> bits. 3. Set the Clock and Gating modes using the TCS and TGATE bits. 4. Set or clear the TSYNC bit to configure synchronous or asynchronous operation. 5. Load the timer period value into the PR1 register. 6. If interrupts are required, set the interrupt enable bit, T1IE. Use the priority bits, T1IP<2:0>, to set the interrupt priority. FIGURE 11-1: 16-BIT TIMER1 MODULE BLOCK DIAGRAM Note: This data sheet summarizes the features of this group of PIC24F devices. It is not intended to be a comprehensive reference source. For more information on Timers, refer to the “PIC24F Family Reference Manual” , Section 14. “Timers” (DS39704). TON Sync SOSCI SOSCO/ PR1 Set T1IF Equal Comparator TMR1 Reset SOSCEN 1 0 TSYNC Q Q D CK TCKPS<1:0> Prescaler 1, 8, 64, 256 2 TGATE TCY 1 0 T1CK TCS 1x 01 TGATE 00 Gate Sync |
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