lpc11u23 NXP Semiconductors, lpc11u23 Datasheet - Page 22
lpc11u23
Manufacturer Part Number
lpc11u23
Description
32-bit Arm Cortex-m0 Microcontroller; Up To 32 Kb Flash; Up To 10 Kb Sram And 4 Kb Eeprom; Usb Device; Usart
Manufacturer
NXP Semiconductors
Datasheet
1.LPC11U23.pdf
(70 pages)
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NXP Semiconductors
LPC11U2X
Product data sheet
7.17.1 Integrated oscillators
7.17 Clocking and power control
The LPC11U2x include three independent oscillators: the system oscillator, the Internal
RC oscillator (IRC), and the watchdog oscillator. Each oscillator can be used for more
than one purpose as required in a particular application.
Following reset, the LPC11U2x operates from the internal RC oscillator until software
switches to a different clock source. The IRC allows the system to operate without any
external crystal and the bootloader code to operate at a known frequency.
See
Figure 7
for an overview of the LPC11U2x clock generation.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 13 January 2012
32-bit ARM Cortex-M0 microcontroller
LPC11U2x
© NXP B.V. 2012. All rights reserved.
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