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T48C862M-R3 数据表(PDF) 50 Page - ATMEL Corporation |
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T48C862M-R3 数据表(HTML) 50 Page - ATMEL Corporation |
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50 / 107 page  50 T48C862-R3 4554A–4BMCU–02/03 PWM Mode: Pulse-width modulation output on Timer 2 output pin (T2O) Figure 48. PWM Modulation Timer 2 Registers Timer 2 has 6 control registers to configure the timer mode, the time interval, the input clock and its output function. All registers are indirectly addressed using extended addressing as described in section "Addressing Peripherals". The alternate functions of the Ports BP41 or BP42 must be selected with the Port 4 control register P4CR, if one of the Timer 2 modes require an input at T2I/BP41 or an output at T2O/BP42. Timer 2 Control Register (T2C) Address: "7"hex - Subaddress: "0"hex 0 0 50 255 100 0 255 0 150 255 0 50 255 0 100 T2R Input clock Counter 2/2 Counter 2/2 OVF2 CM2 INT4 T2O load the next compare value T2CO2=150 load load T1 T2 T3 T1 T2 TT T T T Bit 3Bit 2Bit 1Bit 0 T2CS1 T2CS0 T2TS T2R Reset value: 0000b T2CS1 Timer 2 Clock Select bit 1 T2CS0 Timer 2 Clock Select bit 0 T2CS1 T2CS0 Input Clock (CL 2/1) of Counter Stage 2/1 0 0 System clock (SYSCL) 0 1 Output signal of Timer 1 (T1OUT) 1 0 Internal shift clock of SSI (SCL) 1 1 Output signal of Timer 3 (TOG3) T2TS Timer 2 Toggle with Start T2TS = 0, the output flip-flop of Timer 2 is not toggled with the timer start T2TS = 1, the output flip-flop of Timer 2 is toggled when the timer is started with T2R T2R Timer 2 Run T2R = 0, Timer 2 stop and reset T2R = 1, Timer 2 run |
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