UPD650

NEe Microcomputers, Inc. NEe Jl.PD650 4-81T SINGLE CHIP MICROCOMPUTER OESCR IPTION The pPD650 is a pCOM·43 4·bit single chip microcomputer manufactured with a low·power·consumption CMOS process, allowing use of a single +5V power supply. The pPD650 provides all of the hardware features of the pCOM·43 family, and exe· cutes all 80 instructions of the pCOM·43 instruction set. PIN CONFIGURATION CL, PCo PC, PC2 PC3 mT RESET POO PO, P02 ,P0 3 PEO PEl PE2 PE3 PFo PF, PF2 PF3 TEST Vcc , 2 4 5 6 7 8 9 pPD 650 PIN NAMES CLo PAQ· PA3 Input Port A VSS PB3 PBO·PB3 Input Port B PB2 PB, PCO·PC3 Input/Output Port C PBO POO·P03 Input/Output Port 0 PA3 PA2 PEO·PE3 Output Port E PAl PFO·PF3 Output Port F PAO PI2 PGO·PG3 Output Port G PI, PHO·PH3 Output Port H PIO PH3 PIO·PI2 Output Port I PH2 PH, INT Interrupt Input PHO CLQ-<:L, External Clock Signals PG3 IIPG2 RESET Reset PG, PGo VCC Power Supply Positive VSS Ground TEST Factory Test ...