UPD780-1

NEe Microcomputers, Inc. NEe J.L PD780 J.L PD780·1 8·BIT N·CHANNEL MICROPROCESSOR COMPLETELY Z80™ COMPATIBLE DESC RIPTI ON The pPD780 and pPD780-1 processors are single-chip microprocessors developed from third-generation technology,Their increased computational power produces higher system through-put and more efficient memory utilization, surpassing that of any second-generation microprocessor, The single voltage requirement of the t1PD780 and IlPD780-1 processors makes it easy to implement them into a system. All output signals are fully decoded and timed to either standard memory or peripheral circuits. An N-channel, ion-implanted, silicon gate MOS process is utilized in implementing the circuit. The block diagram shows the functions of the processor and details the internal register structure. The structure contains 26 bytes of Read/Write (R/W) memory available to the programmer. Included in the registers are two sets of six general purpose registers, which may be used in...