MICROPROCESSOR CONTAINING ANALOG/DIGITAL CONVERSION MECHANISM

摘要

PURPOSE:To reduce a hardware load by using a capture circuit which fetches a counted data from a time base counter when the edge of an output signal of a comparator arrives and sends the fetching result to an arithmetic means or a memory means with a specific instruction given from an instruction executing means. CONSTITUTION:Both a capture controller 800 and a capture register block 700 fetch the counted data having the minimum decomposition accuracy higher than the instruction executing cycle from a time base counter 500 when the edge of a capture signal arrives. This fetching result is sent to a computing element ALU300, or a register 100 or a RAM200 via a capture circuit with a specific instruction given from an instruction executing circuit 400. In such a manner, since a mechanism serving as a capture circuit is used to a scan counter for conversion and a register which stores the conversion results, the hardware load is considerably reduced.