March 27, 2012 -- NXP Semiconductors today announced the LPC11A00 microcontroller series featuring a fully interconnected and flexible analog subsystem, based on the ARM Cortex-M0 processor.
Combining 50-MHz CPU performance with advanced analog features including Undervoltage Lockout (UVLO) in a 2.5x2.5-mm WLCSP package, the LPC11A00 is an ideal replacement for 8/16-bit microcontrollers in a variety of power-management applications. Fully integrated with an on-chip temperature sensor and up to 4kBytes of EEPROM, the LPC11A00 microcontroller is well-suited for uninterrupted power supplies (UPS), power inverters, intelligent battery chargers, power-factor correction, sensors, lighting, and power-conversion applications.
The integrated UVLO feature eliminates the need for external components and allows the microcontroller to remain in a safe system state whenever the supply voltage level is below the minimum valid operating level of 2.4V. This feature supports various kinds of power supply ramps including cold power-up, power droop, and power-down ramps, making the LPC11A00 extremely useful in power control and monitoring applications.
Flexible analog subsystem featuring UVLO
The analog subsystem in the LPC11A00 microcontroller includes UVLO protection against power-supply drops below 2.4V; on-chip comparator with programmable voltage reference; 10-bit ADC with input multiplexing among 8 pins; 10-bit DAC with flexible conversion triggering; an integrated temperature sensor; and a highly accurate 0.9-V reference which can be used for internal ADC calibration. By providing seamless integration of the various analog blocks, the LPC11A00 lets system designers off-load critical tasks from the CPU.
The interconnected subsystem offers flexible operation allowing the comparator to trigger ADC and DAC operations while taking time stamps from a 32-bit or a 16-bit timer. Conversely, these analog operations can also be triggered by the timers. For efficient system monitoring, the comparator and the timers can be further configured to make time measurements of fluctuating analog signals.
Wafer-level chip-scale package (WLCSP)
Ideal for small form factor power applications, the 20-pin WLCSP 2.5x2.5-mm package enables debugging/ programming via the I2C-bus, a feature which minimizes the number of pins for system integration while simplifying board layout. On-chip ROM-based routines for the I2C interface enable seamless integration via an API-driven interface. The LPC11A00 WLCSP20 pin-out offers two memory configurations (16kBytes and 32kBytes) with up to 4kBytes of EEPROM, while supporting all peripherals including USART, SSP and 18 GPIOs.
Key Features of the LPC11A00 Series
- Speeds of up to 50MHz.
- Up to 32kBytes of Flash, 8kBytes of SRAM, 4kBytes of EEPROM.
- Includes ROM-based 32-bit integer division and I2C-bus driver routines.
- Up to 16 pins configurable with a digital input glitch filter for removing glitches with widths of 10ns or less; two pins configurable for 50-ns glitch filters.
- USART, 1-2 SSP, I2C (Fm+) as serial peripherals.
- Two 16-bit and two 32-bit timers with PWM/ Match/ Capture.
- 12-MHz internal RC oscillator with 1% accuracy over temperature and voltage.
- Programmable windowed watchdog timer (WWDT) with a dedicated, internal low-power watchdog oscillator (WDOsc).
- Power-on-reset (PoR); multi-level brown-out-detect (BoD); phase-locked loop (PLL)
- Up to 42 General-Purpose I/O (GPIO) pins with configurable pull-up/ pull-down resistors, repeater mode, and open-drain mode.
Availability and Pricing
The LPC11A00 series is currently sampling to lead customers and will be available for volume production in early Q2 2012. The NXP LPC11A00 will be one of the Cortex-M0 microcontrollers covered under NXP's new Product Longevity Program for microcontrollers, which was also announced today.
In addition to the WLCSP, the LPC11A00 will also be available in the 33-pin HVQFN and 48-pin LQFP packages. Recommended distribution unit pricing for LPC11A11FHN33/001 in 10,000 piece quantities for the HVQFN33 package is $1.28.
Go to the NXP Semiconductors website to find additional information.