DATA STORAGE CIRCUIT OF MICROCOMPUTER

摘要

PURPOSE:To improve the processing speed by extracting directly a data written in a data pointer and transmitting it to an RAM address latch so as to decrease the number of states by one and decrease the instruction cycle. CONSTITUTION:A data written in RAM cells 5-7 being data pointers is fed to an RAM address 2 by address transmission lines 8-10. An RAM address latch 2 latches the data, the data is decoded by a decoder 21 and the information of the RAM cell is outputted to bit lines 14-16 and bit line bars 15-19 by taking the data as an address. A data interface 23 outputs this to an internal bus 3 of the microcomputer. Thus, the states are decreased by one so as to improve the processing speed.