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LPC1111FDH20/002 Datasheet(PDF) 98 Page - NXP Semiconductors |
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LPC1111FDH20/002 Datasheet(HTML) 98 Page - NXP Semiconductors |
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98 / 127 page ![]() LPC111X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 9.2 — 26 March 2014 98 of 127 NXP Semiconductors LPC1110/11/12/13/14/15 32-bit ARM Cortex-M0 microcontroller fundamental mode oscillation (the fundamental frequency is represented by L, CL and RS). Capacitance CP in Figure 50 represents the parallel package capacitance and should not be larger than 7 pF. Parameters FOSC, CL, RS and CP are supplied by the crystal manufacturer (see Table 30). Fig 50. Oscillator modes and models: oscillation mode of operation and external crystal model used for CX1/CX2 evaluation Table 30. Recommended values for CX1/CX2 in oscillation mode (crystal and external components parameters) low frequency mode Fundamental oscillation frequency FOSC Crystal load capacitance CL Maximum crystal series resistance RS External load capacitors CX1, CX2 1 MHz to 5 MHz 10 pF < 300 18 pF, 18 pF 20 pF < 300 39 pF, 39 pF 30 pF < 300 57 pF, 57 pF 5 MHz to 10 MHz 10 pF < 300 18 pF, 18 pF 20 pF < 200 39 pF, 39 pF 30 pF < 100 57 pF, 57 pF 10 MHz to 15 MHz 10 pF < 160 18 pF, 18 pF 20 pF < 60 39 pF, 39 pF 15 MHz to 20 MHz 10 pF < 80 18 pF, 18 pF Table 31. Recommended values for CX1/CX2 in oscillation mode (crystal and external components parameters) high frequency mode Fundamental oscillation frequency FOSC Crystal load capacitance CL Maximum crystal series resistance RS External load capacitors CX1, CX2 15 MHz to 20 MHz 10 pF < 180 18 pF, 18 pF 20 pF < 100 39 pF, 39 pF 20 MHz to 25 MHz 10 pF < 160 18 pF, 18 pF 20 pF < 80 39 pF, 39 pF 002aaf424 LPC1xxx XTALIN XTALOUT CX2 CX1 XTAL = CL CP RS L |
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