LPC1224/25/26/27 User manual

The LPC122x extend NXP‘s 32-bit ARM microcontroller conTInuum and target a wide 　　range of industrial applicaTIons in the areas of factory and home automaTIon. BenefitTIng 　　from the ARM Cortex-M0 Thumb instruction set， the LPC122x have up to 50 % higher 　　code density compared to common 8/16-bit microcontroller performing typical tasks. The 　　LPC122x also feature an optimized ROM-based divide library for Cortex-M0， which offers 　　several times the arithmetic performance of software based libraries， as well as highly 　　deterministic cycle time combined with reduced flash code size. The ARM Cortex-M0 　　efficiency also helps the LPC122x achieve lower average power for similar applications. 　　The LPC122x operate at CPU frequencies of up to 45 MHz.They offer a wide range of 　　flash memory options， from 32 kB to 128 kB. The small 512-byte page erase of the flash 　　memory brings multiple design benefits， such as finer EEPROM emulation， boot-load 　　support from any serial interface and ease of in-field programming with reduced on-chip 　　RAM buffer requirements. 　　The peripheral complement of the LPC122x includes a 10-bit ADC， two comparators with 　　output feedback loop， two UARTs， one SSP/SPI interface， one I2C-bus interface with 　　Fast-mode Plus features， a Windowed Watchdog Timer， a DMA controller， a CRC engine， 　　four general purpose timers， a 32-bit RTC， a 1% internal oscillator for baud rate 　　generation， and up to 55 General Purpose I/O （GPIO） pins. 　　Part LPC1227 is available as a dual-chip module integrating the LPC1227 with a 　　PCF8576D LCD driver