Microcontrollers build in support for off-chip SDRAM and flash

摘要

ARM7-core-based microcontrollers, smaller and consuming less power than ARM9-core devices, are workhorses for low-power embedded-system applications operating from batteries. However, to take advantage of built-in support, for SDRAM, NAND flash, and CompactFlash off-chip memories, designers have had to use ARM9 or equivalent microcontrollers.