LPC122x Cortex-M0 Microcontrollers

NXP expands its award-winning and low-power Cortex-M0 microcontroller offerings with the LPC122x series. The LPC122x series adds more features and performances to customers’ applications, including up to 128 kB of flash, DMA, CRC, 4 timers, RTC, comparators, ADC, Fast-Mode-Plus I2C, SPI and a Windowed Watch-dog timer. The LPC122x’s 128 kB flash supports an erase sector as small as 512 bytes. Its 12 MHz internal oscillator with 1 percent accuracy can optionally be used as a system clock output.

The LPC122x series also features the industry’s first division API function designed for the ARM Cortex-M0 Core. This eliminates the need of writing division codes in the software and improves the speed of a division by up to four times and greatly improves the system’s processing performance and saves code space. The LPC122x series is available in 48-LQFP and 64-LQFP packages.

In addition, the LPC122x series has an optional integrated 40 x 4 segment display driver, the LPC12D2x. This is the industry’s first Cortex-M0 microcontroller with an integrated display driver, allowing customers to further integrate their systems' components with smaller footprint and lower cost. LPC12D2x is available in 100-LQFP package.

Features

• Processor core
• ARM Cortex-M0 processor, running at frequencies of up to 30 MHz with zero wait state from Flash
• ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC)
• Serial wire debug
• System tick timer
• Memory
  • Up to 8 kB SRAM
  • Up to 128 kB on-chip flash programming memory
  • In-System Programming (ISP) and In-Application Programming (IAP) via on-chip bootloader software
• Clock generation unit
  • Crystal oscillator with an operating range of 1 MHz to 25 MHz
  • 12 MHz Internal RC (IRC) oscillator trimmed to 1% accuracy that can optionally be used as a system clock
  • 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
  • Clock output function with divider that can reflect the system oscillator clock; IRC clock, main clock, and watchdog clock
  • Real-Time Clock (RTC)
• Power
  • Three reduced power modes: Sleep, deep-sleep, and deep power-down
  • Processor wake-up from deep-sleep mode via start logic using 12 port pins
  • Brownout detect with three separate thresholds each for interrupt and forced reset
  • Power-On Reset (POR)
  • Integrated PMU (Power Management Unit)

Applications

• eMetering
• Lighting
• Industrial networking
• Alarm systems
• White goods