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NXP Semiconductors designed the LPC2468 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-TIme debug interfaces that include both JTAG andembedded trace. The LPC2468 has 512 kB of on-chip high-speed flash memory. Thisflash memory includes a special 128-bit wide memory interface and acceleratorarchitecture that enables the CPU to execute sequenTIal instrucTIons from flash memory atthe maximum 72 MHz system clock rate. This feature is available only on the LPC2000ARM microcontroller family of products. The LPC2468 can execute both 32-bit ARM and16-bit Thumb instrucTIons. Support for the two instruction sets means engineers canchoose to optimize their application for either performance or code size at the sub-routinelevel. When the core executes instructions in Thumb state it can reduce code size by morethan 30 % with only a small loss in performance while executing instructions in ARM statemaximizes core performance.The LPC2468 microcontroller is ideal for multipurpose communication applications. Itincorporates a 10/100 Ethernet Media Access Controller (MAC), a USB full-speedDevice/Host/OTG Controller with 4 kB of endpoint RAM, four UARTs, two Controller AreaNetwork (CAN) channels, an SPI interface, two Synchronous Serial Ports (SSP), three I2Cinterfaces, and an I2S interface. Supporting this collection of serial communicationsinterfaces are the following feature components; an on-chip 4 MHz internal precisionoscillator, 98 kB of total RAM consisting of 64 kB of local SRAM, 16 kB SRAM forEthernet, 16 kB SRAM for general purpose DMA, 2 kB of battery powered SRAM, and anExternal Memory Controller (EMC). These features make this device optimally suited forcommunication gateways and protocol converters. Complementing the many serialcommunication controllers, versatile clocking capabilities, and memory features arevarious 32-bit timers, an improved 10-bit ADC, 10-bit DAC, two PWM units, four externalinterrupt pins, and up to 160 fast GPIO lines. The LPC2468 connects 64 of the GPIO pinsto the hardware based Vector Interrupt Controller (VIC) that means these external inputscan generate edge-triggered interrupts. All of these features make the LPC2468particularly suitable for industrial control and medical systems.
