mitsubishi - Al Kossow's Bitsavers

MITSUBISHI MICROCOMPUTERSMSL8048-XXXP/MSL803SLPSINGLE-CHIP 8-BIT MICROCOMPUTERDESCRIPTIONThe M5L8048-XXXP and M5L8035LP are 8-bit parallelmicrocomputer fabricated on a single chip using highspeedN-channel silicon-gate ED-MaS technology.FEATURES• Single 5V power supply• Instruction cycle ................. 2.5J.ls (min)• Basic machine instructions: ................ 961-byte instructions: 682-byte instructions: 28• Direct addressing ...... .• I nternal ROM .............. .(for M5L8048-XXXP only). up to 4096 bytes1024 bytes• Internal RAM ..................... 64 bytes• Built-in timer/event counter ..... . .... 8 bits• I/O Ports .................. .27 lines• Easily expandable Memory and I/O• Subroutine nesting ............. . 8 levels• External and timer/event counter interrupt. 1 level each• Low power standby mode• External RAM ..................... 256 bytes• Interchangeable with i 8048 and i 8035L in pin configurationand electrical characteristicsAPPLICATION• Control processor or CPU for a wide variety of applicationsPIN CONFIGURATION (TOP VIEW)CLOCK INPUT 2 X2 -+ 3RESET INPUT RESET-+ 4SINGLE·STEP INPUT SS -+ 5REQ0~H~~~0t INT-+ 6EXTERNAL ACCESS EA -+ 7READ RD +- 8STOR~REPNGfB't~ PSEN +- 9WRITE WR +- 10LATCHA~~:~r~ ALE +- 11DATA BUS( 0 V) Vss--,-----.....Outline 40P4Vee (5V)39 +- T, TEST PIN 127 *Pl026 Voo (5V)I/O PORT 125 ~PROG F/~TERNALCONTROL24 * P 2 3} OUTPUT23 *P22 I/O PORT 222 "P2,21 *P20FUNCTIONThe M5L8048-XXXP and M5L8035LP are integrated 8-bitCPU, with memory (ROM, RAM) and timer/event counterinterrupt all contained on a single chip.IIBLOCK DIAGRAMosc F REO(5V) VeeROREGISTER 0Rl REGISTER IR2REGISTER 2 aR3REGISTER 3 >