Описание
The LPC3250 embedded microcontrollers were designed for low power, high performance applications. NXP achieved their performance goals using a 90 nanometer process to implement an ARM926EJ-S CPU core with a vector floating point co-processor and a large set of standard peripherals including USB On-The-Go. The LPC3220/30/40/50 operates at CPU frequencies of up to 266 MHz. The NXP implementation uses a ARM926EJ-S CPU core with a Harvard architecture, 5-stage pipeline, and an integral Memory Management Unit (MMU). The MMU provides the virtual memory capabilities needed to support the multi-programming demands of modern operating systems. The ARM926EJ-S also has a hardware based set of DSP instruction extensions, which includes single cycle MAC operations, and hardware based native Jazelle Java Byte-code execution. The NXP implementation has a 32 kB instruction cache and a 32 kB data cache.
- ARM926EJ-S processor, running at CPU clock speeds up to 266 MHz.
- Vector Floating Point (VFP) coprocessor.
- 32 kB instruction cache and 32 kB data cache.
- Up to 256 kB of Internal SRAM (IRAM).
- Selectable boot-up from various external devices: NAND flash, SPI memory, USB, UART, or static memory
- External memory controller for DDR and SDR SDRAM as well as for static devices.
