基于LPC1311設計的Cortex-M3 CPU USB接
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Clock output function with divider that can reflect the system oscillator clock, IRC clock, CPU clock, or the watchdog clock.
Processor wake-up from Deep-sleep mode via a dedicated start logic using up to 40 of the functional pins.
Brownout detect with four separate thresholds for interrupt and one threshold for forced reset.
Power-On Reset (POR).
Integrated oscillator with an operating range of 1 MHz to 25 MHz.
12 MHz internal RC oscillator trimmed to 1 % accuracy over the entire temperature and voltage range that can optionally be used as a system clock.
Programmable watchdog oscillator with a frequency range of 7.8 kHz to 1.8 MHz.
System PLL allows CPU operation up to the maximum CPU rate without the need for a high-frequency crystal. May be run from the system oscillator or the internal RC oscillator.
For USB (LPC1342/43), a second, dedicated PLL is provided.
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