The LPC1837FET256,551 is a 32-bit Microcontroller based on ARM Cortex-M3 core with RISC architecture operates at a maximum frequency of 180MHz. The ARM Cortex-M3 is a next generation core that offers system enhancements such as low power consumption, enhanced debug features and a high level of support block integration. The ARM Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with separate local instruction and data buses as well as a third bus for peripherals. The ARM Cortex-M3 CPU also includes an internal prefetch unit that supports speculative branching. The device incorporates 1MB internal flash, 136kB internal RAM, 16kB EEPROM, a quad SPI Flash Interface (SPIFI), a State-configurable Timer/PWM (SCTimer/PWM) subsystem, two high-speed USB controllers, Ethernet, an external memory controller and multiple digital and analog peripherals and 164 general-purpose I/O pins.
ARM Cortex-M3 built-in memory protection unit (MPU) supporting eight regions
Non-maskable Interrupt (NMI) input
JTAG and serial wire debug, serial trace, eight breakpoints and four watch points
Enhanced trace module (ETM) and Enhanced trace buffer (ETB) support
System tick timer
Multiple SRAM blocks with separate bus access
Crystal oscillator with an operating range of 1MHz to 25MHz
12MHz Internal RC oscillator trimmed to 3 % accuracy
Ultra-low power RTC crystal oscillator
External memory controller (EMC)
SD/MMC card interface
8-channel General-purpose DMA controller
Motor control PWM for three-phase motor control
Quadrature encoder interface (QEI)
Repetitive interrupt timer (RI Timer)
Windowed watchdog timer
Ultra-low power real-time clock (RTC)
Alarm timer - can be battery powered
Unique ID for each device
Four reduced power modes - Sleep, deep-sleep, power-down and deep power-down
