power management

There are several ways to wake up the processor, such as:
NMI, External Interrupts EINT0 through EINT3, GPIO interrupts, the Ethernet WOL interrupt, BOD, RTC Alarm interrupt, a WD Timer timeout, a USB input pin transition, a CAN input pin transition, as long as the related interrupt is enabled.
A UART may be used to wake the device from sleep mode but not from deep sleep mode and power-down mode. The UART can be running in sleep mode and when it receives a signal, it can generate an interrupt and wake the processor up.
In sleep mode, any enabled interrupt can wake the device up.

The LPC29xx incorporates a sophisticated and complex power management system. In this application note we will describe how to use the power management unit to place the MCU into a power down (PD) state while maintaining the ability to respond to its environment.

This application note introduces the various low power modes of the LPC177x/8x series, the steps required to enter the low power modes and helpful hints to reduce power consumption.

This application note also provides a software example to enter the low power modes and demonstrates how to measure the power consumption.

Rev. A LPC43xx CMSIS-Compliant Standard Peripheral Firmware Driver Library (Keil). For updates, review the LPC4300CMSIS_ReleaseNotes.txt file.

Rev. A LPC18xx CMSIS-Compliant Standard Peripheral Firmware Driver Library (Keil). See LPC1800CMSIS_ReleaseNotes.txt for release details.

This application note provides a power supply example for the system designer, which takes advantage of the
power saving features built in to the LPC32X0 microcontroller.

In today’s complex embedded microcontroller designs not all peripheral interfaces and
memories operate over the same power supply voltage range. For this reason and for
overall system power savings, there is a need to provide system designers with the
flexibility to support a wide range of IO voltage levels. For example, a low power
application may use mobile SDR or DDR synchronous dynamic memories requiring 1.8V

This application note attempts to introduce the various low power modes of the LPC134x and LPC131x series, the steps required to enter the low power modes, wake-up implementation, and helpful hints to reduce power consumption. This application note also provides a software example to enter the low power modes, and demonstrates how to measure the power consumption and wake-up times using the LPC1343 LPCXpresso board.

Includes MCI sample project updates among some others.