mitsubishi - Al Kossow's Bitsavers

MITSUBISHI MICROCOMPUTERSMSL8042-XXXPSLAVE MICROCOMPUTERDESCRIPTION'The M5L8042-XXXP is a general-purpose programmable interfacedevice designed for use with a variety of 8-bit microcomputersystems. The device is fabricated using n­channel silicon-gate EO-MOS technology.FEATURES• Mask ROM .................................... · 2048-word by 8-bit• Static RAM ............................ · ........ "128-word by 8-bit• 18 programmable 1/0 pins• Asynchronous data register for interface to master processor• 8-bit CPU, ROM, RAM, 1/0, tilner, clock and low-powerstand-by mode• Single 5V power supply• Alternative to custom LSI• Interchangeable '!Vith i 8042APPLICATIONAlternative to custom LSI for peripheral interfacesPIN CONFIGURATION (TOP VIEW)TEST PIN 0 To~ 1CLOCK 1 X1 ~ 2CLOCK 2 X2~ 3RESET RESET ~ 4SINGLE STEP Ss~ 5CHIP SELECT CS ~ 6EXTERNALACCESS(NOTE 1) E~ ~ 7READ R~ 8ADDRESS Ao ~ 9WRITE W~ 10SYNCHR~I~~~r SYNC +- 11DATA BUSDOo- 1239 +- T1Vee (5V)38 - P2 7 /DACK \37 - P26/DRO ci~~WJ~36 - P2s/lBF PORT 235 - P24/0BFINPUTIOUTPUTPORT 127 - P1 026 Voo (5V)25 ~ PROG ~>gERNALCONTROLINPUTIOUTPUTPORT 2\Outline 40P4Note 1Connect to Vss in the operating condition.BLOCK DIAGRAM/INPUTIOUTPUT PORT 1INPUT/OUTPUT PORT 2P2 4 /0BFP2s/lBFP2 6 /DORC!V""",-,;:c",..k-.;~-;...,r P2 7 /DACK-~voc {5VIRESETAoRESETSINGLE STEPTEST PIN 0TEST 'PIN 1READWRITECHIP SELECTADDRESS'-----...( 7 EA EXTERNAL ACCESS5PR~~ SYNC EXTERNAL 1/0 CONTROLCLOCKSYNCHRONIZEDSIGNAL5-32• MITSUBISHI.... ELECTRIC