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LPC81xM датащи(PDF) 24 Page - NXP Semiconductors |
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LPC81xM датащи(HTML) 24 Page - NXP Semiconductors |
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24 / 78 page ![]() LPC81XM All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2018. All rights reserved. Product data sheet Rev. 4.6 — 4 April 2018 24 of 78 NXP Semiconductors LPC81xM 32-bit ARM Cortex-M0+ microcontroller 8.20 Clocking and power control 8.20.1 Crystal and internal oscillators The LPC81xM include four independent oscillators: 1. The crystal oscillator (SysOsc) operating at frequencies between 1 MHz and 25 MHz. 2. The internal RC Oscillator (IRC) with a fixed frequency of 12 MHz, trimmed to 1% accuracy. 3. The internal low-power, low-frequency Oscillator with a nominal frequency of 10 kHz with 40% accuracy for use with the self wake-up timer. 4. The dedicated Watchdog Oscillator (WDOsc) with a programmable nominal frequency between 9.4 kHz and 2.3 MHz with 40% accuracy. Fig 10. LPC81xM clock generation |
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