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MSC1202Y2RHHT датащи(PDF) 79 Page - Texas Instruments |
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MSC1202Y2RHHT датащи(HTML) 79 Page - Texas Instruments |
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79 / 92 page ![]() MSC1200 MSC1201 MSC1202 SBAS317E − APRIL 2004 − REVISED MAY 2006 www.ti.com 79 PSEN/ALE Select (PASEL) 7 6 5 4 3 2 1 0 Reset Value SFR F2h PSEN4 PSEN3 PSEN2 PSEN1 PSEN0 0 0 0 00h PSEN2−0 PSEN Mode Select. Defines the output on P3.6 in UAM or SFPM. bits 7−3 00000: General-purpose I/O (default) 00001: SYSCLK 00011: Internal PSEN (refer to Figure 5 for timing) 00101: Internal ALE (refer to Figure 5 for timing) 00111: fOSC (buffered XIN oscillator clock) 01001: Memory WR (MOVX write) 01011: T0 Out (overflow)(1) 01101: T1 Out (overflow)(1) 01111: fMOD(2) 10001: SYSCLK/2 (toggles on rising edge)(2) 10011: Internal PSEN/2(2) 10101: Internal ALE/2(2) 10111: fOSC(2) 11001: Memory WR/2 (MOVX write)(2) 11011: T0 Out/2 (overflow)(2) 11101: T1 Out/2 (overflow)(2) 11111: fMOD/2(2) (1) One period of these signals equal to tCLK. (2) Duty cycle is 50%. Phase Lock Loop Low (PLLL) 7 6 5 4 3 2 1 0 Reset Value SFR F4h PLL7 PLL6 PLL5 PLL4 PLL3 PLL2 PLL1 PLL0 xxh PLL7−0 PLL Counter Value Least Significant Bit. bits 7−0 PLL Frequency = External Crystal Frequency • (PLL9:0 + 1). |
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