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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMX8MPCEC датащи(PDF) 44 Page - NXP Semiconductors |
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IMX8MPCEC датащи(HTML) 44 Page - NXP Semiconductors |
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44 / 111 page  i.MX 8M Plus Applications Processor Datasheet for Consumer Products, Rev. 0, 03/2021 44 NXP Semiconductors Electrical characteristics 3.7.1 Reset timings parameters Figure 11 shows the reset timing and Table 33 lists the timing parameters. Figure 11. Reset timing diagram 3.7.2 WDOG Reset timing parameters Figure 12 shows the WDOG reset timing and Table 34 lists the timing parameters. Figure 12. WDOGx_B timing diagram NOTE RTC_XTALI is approximately 32 kHz. RTC_XTALI cycle is one period or approximately 30 µs. NOTE WDOGx_B output signals (for each one of the Watchdog modules) do not have dedicated pins, but are muxed out through the IOMUX. See the IOMUXC chapter of the i.MX 8M Plus Applications Processor Reference Manual (IMX8MPRM) for detailed information. 3.7.3 DDR SDRAM–specific parameters (LPDDR4 and DDR4) The i.MX 8M Plus Family of processors have been designed and tested to work with JEDEC JESD209-4A–compliant LPDDR4 memory and JESD79-4A compliant DDR4 memory. Timing diagrams Table 33. Reset timing parameters ID Parameter Min Max Unit CC1 Duration of POR_B to be qualified as valid. Note: POR_B rise/fall times must be 5 ns or less. 1 — RTC_XTALI cycle Table 34. WDOGx_B timing parameters ID Parameter Min Max Unit CC3 Duration of WDOG1_B Assertion 1 — RTC_XTALI cycle POR_B CC1 (Input) WDOGx_B CC3 (Output) |
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