首页>
外国专利>
Microcontroller Operable in normal and low speed modes utilizing control signals for executing commands in a read-only memory during the low speed modes
Microcontroller Operable in normal and low speed modes utilizing control signals for executing commands in a read-only memory during the low speed modes
展开▼
机译:微控制器可在正常和低速模式下使用低速模式下的控制信号在只读存储器中执行命令的方式进行操作
展开▼
页面导航
摘要
著录项
相似文献
摘要
A microcontroller includes a clock circuit with a register storing clock frequency information corresponding to a low speed or normal mode respectively operated by a low frequency or normal clock, which outputs a first signal according to a value set in the register when the low speed mode is designated during operation in the normal mode, a DRAM holding data, in the low speed mode, by operation in a self-refresh mode, and outputting a confirmation signal indicating switching to that mode, a DRAM circuit switching the DRAM to that mode based on the first signal, a ROM operated in the low speed mode, a remap circuit controlling an address circuit based on the confirmation signal, and outputting a second signal for switching a program execution address from the DRAM to an address of the ROM to control an address space in which a program is executed, the address circuit switching the address space based on the second signal.
展开▼