mitsubishi - Al Kossow's Bitsavers

MITSUBISHI MICROCOMPUTERSMS0740-XXXSPSINGLE-CHIP a-BIT CMOS MICROCOMPUTERDESCRIPTIONThe M50740-XXXSP is a single-chip 8-bit microcomputerfabricated using CMOS technology and housed in a 52-pinshrink plastic molded OIL package. It is designed to suit forcontrolling home electrical appliances and consumerequipment with a simple instruction where the ROM andRAM use the same memory area.FEATURES'• Basic machine instructions······································ 70• Memory capacity ROM ·······························3072 bytesRAM··································· 96 bytes• Instruction execution time (with shortest instruction,at 4MHz) ··················································2,us (min.)• Single power supply .. ··································5V ±10%• Low power dissipation·· 15mW during operation (4MHz)• Subroutine nesting ............................. 48 levels (max.)• Interrupts··························· 5 sources, 32 levels (max.)• 8~bit timers·····························································3• Programmable input/output (ports PO, Pl, P2, P3) ······32APPLICATIONVTRs, tuners and audio equipmentPIN CONFIGURATION (TOP VIEW)INPUT/OUTPUTPORT P2INPUT/OUTPUTPORT POTIMER INPUT/O~NTrE~TR~~ POo - 17INPUT CNTR - 18INTERRU:;JPUT INT -+ 19NC 20I (OV)__CNVss -+ 21RESET INPUT RESET -+ 22CLOCK INPUTVee (5V)NC______..12-7 - Ra\INPUT/OUTPUTPORT p3INPUT/OUTPUTPORT pi35 - P1 7 RESET34 -+ RESET OUT OUTPUT '33 -+ CE CHIP ENABLE32 -+ R/W ~~f~ OUTPUT31 --+ if> TIMING OUTPUT29 - Rl !INPUT/OUTPUT28 _ R2 PORT ROutline 52P4BNC : NO CONNECTIONII(5V) (OV) (OV)Vec Vss CNVss--r-r---r-- -- -----;~--r----------------.------------------------r---------------a------,r--------.---IIIII ,27282930 434445464484950 12345678 3536 383940414 1011113115161CE R/W Ra Rl P37 P35 P33 P31 P27 P25 P23 P21 P17 P15 P13 P11 P07 POs P03 po,R2 Ro P36 P34 P32 P30 P26 P24 P22 P20 ~~L~I~o ~LfQLPQz....fQoCHIP READI I NPUT;---!NPUTI INPUTI INPUTI INPUT/ENABLE WRITE OUTPUT OUTPUT OUTPUT OUTPUT OUTPUTOUTPUT PORT R PORT P3 PORT P2 PORT Pl PORT POCNTRriMER X TX(BTIMERINPUT/OUTPUT ANDINTERRUPT INPUTI,CONTROL jSIGNAL---------• MITSUBISHI.... ELECTRIC3-3