| 摘要 |
<p>PURPOSE:To make easily a digital computer into one chip, by making plural D/A converters and a microcomputer into one body to simplify the constitution and reduce the number of constituting elements. CONSTITUTION:Respective circuits are operated o a basis of the system clock generated from a clock generator 31. Respective circuits of a microcomputer and D/A conversion latch circuits 32 are connected by an internal bus 33. When the reset terminal of a control circuit 34 becomes active, an instruction register and decoder circuit 37 fetches the instruction in a specific address of a program ROM36 through a control branch logic circuit 35 to start the execution of a program. The internal bus 22 of the microcomputer is connected to an arithmetic operation unit ALU38, a digital I/O circuit 39, a latch circuit 32 for D/A conversion, a RAM40, etc.</p> |
