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ATAM862 датащи(PDF) 45 Page - ATMEL Corporation |
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ATAM862 датащи(HTML) 45 Page - ATMEL Corporation |
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45 / 110 page ![]() 45 4554E–4BMCU–05/06 ATAM862-3 22.7.1 Timer 1 Control Register 1 (T1C1) Address: "7"hex - Subaddress: "8"hex * Bit 3 -> MSB, Bit 0 -> LSB The three bits T1C[2:0] select the divider for Timer 1. The resulting time interval depends on this divider and the Timer 1 input clock source. The timer input can be supplied by the system clock, the 3-2kHz oscillator or via the clock management. If the clock management generates the SUBCL, the selected input clock from the RC oscillator, 4-MHz oscillator or an external clock is divided by 16. Table 22-5. Timer 1 Control Bits Bit 3 * Bit 2 Bit 1 Bit 0 T1RM T1C2 T1C1 T1C0 Reset value: 1111b T1RM Timer 1 Restart Mode T1RM = 0, write access without Timer 1 restart ......T1RM = 1, write access with Timer 1 restart Note: If WDL = 0, Timer 1 restart is impossible T1C2 Timer 1 Control bit 2 T1C1 Timer 1 Control bit 1 T1C0 Timer 1 Control bit 0 T1C2 T1C1 T1C0 Divider Time Interval with SUBCL Time Interval with SUBCL = 32 kHz Time Interval with SYSCL = 2/1 MHz 0 0 0 2 SUBCL/2 61 µs 1 µs/2 µs 0 0 1 4 SUBCL/4 122 µs 2 µs/4 µs 0 1 0 8 SUBCL/8 244 µs 4 µs/8 µs 0 1 1 16 SUBCL/16 488 µs 8 µs/16 µs 1 0 0 32 SUBCL/32 0.977 ms 16 µs/32 µs 1 0 1 256 SUBCL/256 7.812 ms 128 µs/256 µs 1 1 0 2048 SUBCL/2048 62.5 ms 1024 µs/2048 µs 1 1 1 16384 SUBCL/16384 500 ms 8192 µs/16384 µs |
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