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SCF5250 датащи(PDF) 25 Page - Motorola, Inc |
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SCF5250 датащи(HTML) 25 Page - Motorola, Inc |
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25 / 48 page ![]() Electrical Characteristics SCF5250 Integrated ColdFire® Microprocessor Data Sheet, Rev. 1.1 Freescale Semiconductor 25 Figure 2. Clock Timing Definition NOTE Signals above are shown in relation to the clock. No relationship between signals is implied or intended. Table 19. Clock Timing Specification NUM Characteristic Units Min Max CRIN Frequency1 5.00 33.86 MHz C5 PSTCLK cycle time 7.1 — nSec C6 PSTCLK duty cycle 40 60 % C7 BCLK cycle time 14.2 — nSec C8 BCLK duty cycle 45 55 % Note: There are only three choices for the valid Audio frequencies 11.29 MHz, 16.93 MHz, or 33.86 MHz; no other values are allowed. The System Clock is derived from one of these crystals via an internal PLL. CRIN PSTCLK BCLK C6 C6 C7 C8 C8 |
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