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MCUs tout low power use, integrated EEPROM

Posted: 07 Mar 2012 ?? ?Print Version ?Bookmark and Share

Keywords:MCU? EEPROM? power consumption?

NXP Semiconductors N.V. has expanded its line of MCUs with the introduction of two devices. The LPC1100XL MCU claims to offer the industry's lowest active power consumption at 110uA/MHz and reduced deep sleep current below 2uA. The LPC11E00 series is for space-constrained applications requiring dedicated EEPROM, extending the range of options available in the NXP Cortex-M0 portfolio including integrated USB, CAN and Segment LCD.

LPC1100XL: The low-power MCU
The reductions in power consumption in the LPC1100XL are complemented by on-chip "power profiles"a unique industry implementation of real-time power management, stated NXP. Optimized for CPU performance, efficiency and lowest active current, the power profiles enable maximum operating frequency through the entire voltage range from 1.8-3.6V without compromising speed or functionality, This makes the LPC1100XL an ideal choice for all low-power 8/16bit applications, the company indicated.


The LPC1100XL is geared for low-power 8/16bit apps.

The LPC1100XL incorporates NXP's proprietary embedded flash that extends solutions to 64KB while incorporating 256B of page erase. The feature significantly improves the efficiency and ease of use of the on-chip flash, allowing for seamless field updates without having to erase a large sector to write the next page, continued NXP.

LPC11E00: MCU with integrated EEPROM
The LPC11E00 series features 4KB of integrated EEPROM for applications such as medical and industrial measuring devices. This removes the need for external serial EEPROM, saving up to 15mm2 of PCB real estate and reducing electrical interconnect, while providing the added security of the MCU. The LPC11E00 with 10K SRAM and 32KB flash is a feature-rich solution and maximizes connectivity with 2 SSP, USART with smart card interface and I2C Fm+ and 54 GPIO pins.


The LPC11E00 series is for space-constrained applications requiring dedicated EEPROM.

The on-chip ROM in the LPC11E00 series includes a 32bit divide library with an API interface offering several times the arithmetic performance of software-based libraries, as well as a highly deterministic cycle time combined with reduced flash code size. Access to the EEPROM on the LPC11E00 is simplified with an API interface that is also integrated in on-chip ROM.

The two MCU lines are supported by a range of third-party development tools, as well as NXP's LPCXpresso development platform. LPCXpresso features a powerful Eclipse-based IDE with an intuitive NXP-designed UI, optimized Cortex-M0 compiler and libraries. Designed for simplicity and ease of use, LPCXpresso gives designers a quick and easy way to work with the MCUs, enabling anyone to develop with Cortex-M0, noted the company.

The LPC1100XL and LPC11E00 devices feature speeds of up to 50MHz, and 12MHz internal RC oscillator with one percent accuracy over temperature and voltage. They have 32 vectored interrupts, four priority levels and dedicated interrupts on up to 13 GPIOs. The MCUs likewise offer 8-channel high-precision 10bit ADC with 1 LSB DNL.

The LPC1100XL series is available in 48K, 56K and 64K flash options.

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