Date: 04/04/2012
LPC11A00 MCUs from NXP with flexible analog subsystem & UVLO
NXP Semiconductors N.V.has announced the new Cortex-M0 LPC11A00 microcontroller series that features under-voltage lockout (UVLO) for power control and power monitoring applications with a fully interconnected and flexible analog subsystem.
LPC11A00 combines 50-MHz CPU performance with advanced analog features including Under-voltage Lockout (UVLO) in a 2.5 x 2.5-mm WLCSP package thereby becomes suitable for power management applications as well as direct replacement for 8/16-bit microcontrollers.
The chip is fully integrated with an on-chip temperature sensor and up to 4KB of EEPROM makes its usage in Un-interrupted power supplies (UPS), power inverters, intelligent battery chargers, power factor correction, sensors, lighting, and power-conversion applications.
The need of external components is eliminated by the integrated UVLO feature allowing 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 microcontroller useful in power control and monitoring applications.
The flexible analog subsystem in the LPC11A00 microcontroller includes UVLO protection; 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 voltage reference which can be used for internal ADC calibration. By providing seamless integration of the various analog blocks, the LPC11A00 allows system designers to off-load critical tasks from the CPU.
Flexible operation is offered by the interconnected subsystem allowing the comparator to trigger ADC and DAC operations while taking timestamps from a 32-bit or a 16-bit timer. In other words, the analog operations can also be triggered by the timers.
The 20-pin Wafer-Level Chip Scale 2.5 x 2.5-mm Package enables debugging/programming via the I2C-bus. On-chip ROM-based routines for the I2C interface enable seamless integration via an easy-to-use API-driven interface.
Two memory configurations (16 KB and 32 KB) with up to 4 KB EEPROM is offered in the LPC11A00 WLCSP20 pin-out while supporting all peripherals including USART, SSP and 18 GPIOs.
Other features of the LPC11A00 Series
Up to 16 pins configurable with a digital input glitch filter for removing glitches with widths of 10 ns 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 percent 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
NXP is showcasing the LPC11A00 at ESC Silicon Valley 2012, a DESIGN West Summit, in booth 1308.
The LPC11A00 series is currently sampling to lead customers and will be available for volume production in early Q2 2012.
The LPC11A00 is also 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 at US $1.28 with 8 KB Flash, 2 KB SRAM and 512 B EEPROM.
Further information is available at: http://www.nxp.com/products/microcontrollers/cortex_m0/lpc11a00/