Microcomputer Unit - Index of

HD6801S0, HD6801S5--­MCU (Microcomputer Unit)The H))6801S MCU is an 8·bit microcomputer systemwhich is compatible with the HMCS6800 family of parts. TheH))6801S MCU is object code compatible with the H06800with improved execution times of key instructions plus severalnew. 16.oit and 8·bit instructions including an 8x8 unsignedmultiply with 16-bit result. The HD6801S MCV can operateas a single - chip microcomputer or be expanded to 65kwords. The H06801S MCV is TTL compatible and requiresone +5.0 volt power supply. The HD6801S MCV has 2kbytes of ROM and 128 bytes of RAM on chip. Serial Com·munications interface (S.C.I.), and parallel I/O as well as athree function 16-bit timer. Features and Block diagram ofthe H06801S include the following:HD6801S0PHD6801S5P(DP-40)• FEATURES• Expanded HMCS6800 Instruction Set• 8 x 8 Multiply• On·Chip Serial Communications Interface (S.C.I.)• Object Code Compatible With The HD6800 MPU• H)·Bit Timer• Single Chip Or Expandable To 65k Words• 2k Bytes Of ROM• 128 Bytes Of RAM (64 Bytes Retainable On PowerDown)• 29 Parallel I/O Lines And 2 Handshake Control Lines• Internal Clock/Divided-By-Four Circuitry• TTL Compatible Inputs And Outputs• Interrupt Capability• Compatible with MC6801 and MC6801-1• BLOCK DIAGRAM• PIN ARRANGEMENToHD6801SP 17(Top View)SC,SC2P30P 3 ,P32P33P 34P 35P 38P 37Poep.,p. 2P 43P44P4ep. 71 Vee Standby• TYPE OF PRODUCTSMCUHD6801SOHD6801S5Bus Timing1 MHz1.25 MHza.---P,o~ ==:PII P"PI)~==:~::1----PI6I----P"@HITACHI41