mitsubishi - Al Kossow's Bitsavers

MITSUBISHI MICROCOMPUTERSMSM82C43PINPUT /OUTPUT EXPANDERDESCRIPTIONTheM5M82C43P is an input/output expander fabricated usingCMOS silicon-gate technology. This device is designedspecifically to provide a low-cost means of I/O expansionfor the MELPSS-48 single-chip S-bit microcomputers andthe MELPSS-41 slave microcomputers.FEATURES• 16 input/output pins (l oL = 5.0mA (max.))• Simple interface to MELPSS-4S, MELPSS-41• Single 5V power supply• Interchangeable with iS243 in pin configurationAPPLICATIONI/O expansion for the MELPS8-4S single-chip microcomputersand the MELPSS-41 slave microcomputers.PIN CONFIGURATION. (TOP VIEW)~~~J~OUTPUT P5 0 " 1IP4o" 2INPUT/OUTPUT P41 " 3PORT 4 P4 2 " 4P43 " 5CHIP SELECT CS -+ 6PROGRAM PROG -+ 7IP23 " 824 Vee (5V)23 .. P51 }22 .. P5 2 ~rg'R~T ~OUTPUT21 .. P5 320 .. P6 0 \19 .. P61 INPUT/OUTPUT18 .. P6 2PORT 617 .. P6 3INPUT/.OUTPUT P22" 916 "P7 3 \PORT 2 - P2 1" 1015 .. P72 INPUT/OUTPUTP2o" 1114 .. P7 1 PORT 7______ 1-3 .. P7(oV) GND0Outline 24P4FUNCTIONThe M5MS2C43P is designed to provide a low-cost meansof I/O expansion for the MELPSS-41 slave microcomputersand the MELPSS-4S single-chip microcomputers. TheM5MS2C43P consists of four 4-bit bidirectional _ static I/Oports and one 4-bit port which serves as an interface to theMELPSB-41 and MELPSS-4S. Thus multiple M5M82C43Pscan be added to a single master.Using the original instruction set of the master, theM?MS2C43P serves as the in-resident I/O facility. Its I/Oports are accessed by instructions MOVO, ANLO andORLO.BLOCK DIAGRAMPORT 2CHIP SELECT PROGRAM~CS PROG P2op2t22P23,----------- -6 7 1110 9 8IVed5V)IIIIIIL_6-32 • MITSUBISHI.... ELECTRIC