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LPC5410X датащи(PDF) 75 Page - NXP Semiconductors |
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LPC5410X датащи(HTML) 75 Page - NXP Semiconductors |
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75 / 95 page ![]() LPC5410x All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved. Product data sheet Rev. 2.11 — 19 September 2019 75 of 95 NXP Semiconductors LPC5410x 32-bit ARM Cortex-M4/M0+ microcontroller 13. Application information 13.1 Start-up behavior Figure 26 shows the start-up timing after reset. The IRC 12 MHz oscillator provides the default clock at Reset and provides a clean system clock shortly after the supply pins reach operating voltage. Fig 26. Start-up timing Table 33. Typical start-up timing parameters Parameter Description Value ta IRC start time 20 s tb Internal reset de-asserted 151 s tc Boot time 68 s aaa-024042 valid threshold = 1.62 V processor status VDD IRC status internal reset GND boot time user code boot code execution finishes; user code starts IRC starts supply ramp-up time tb μs ta μs tc μs |
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