MC6801U4

Advance Information MC6801U4 MC6803U4 I ,,.,, MICROCOMPUTER/MICROPROCESSOR (MCU/MPU) The MC6801 U4 is an 8-bit single-chip microcomputer unit (MCU) which enhances the capabilities of the MC6801 and significantly enhances the capabilities of the M6800 Family of parts. It includes an MC6801 microprocessor unit (MPU) with direct object-code compatibility and upward object-code compatibility with the MCWOO. Execution times of key instructions have been improved over the MC6BO0 and the new instructions found on the MC6801 are included. The MCU can function as a monolithic microcomputer or can be expanded to a 64K byte address space. It is TTL compatible and requires one + 5-volt power supply. On-chip resources include 4096 bytes of ROM, 192 bytes of RAM, a serial communications interface (SCI), parallel 1/0, and a ~ 16-bit six-function programmable timer. The MC6803U4 can be con- ~~~ sidered an MC6801 U4 operating in modes 2 or 3; i.e., those that do n~$ ‘t+ Enhanced MCWOO Instruction Set Upward Source and Object Code Compatibility and MC6BOI ,.:,a.,<:~*“.~..:i,’‘.*t.&>.>,;,\’..:+, > with ~~~C6800 .} ;,. Bus Compatibility with the M6800 Family ,,~“<~1:,‘y ~~ +/+$ 8X 8 Multiply Instruction J*~‘,*~;\...>::..,.,,,.\,.>,i.<.,, Single-Chip or Expanded Operation to ~::,&~~WAddress Space Internal Clock Generator with Divide:~~~Q&@~utput Serial Communications Interface (~$$$$~ 16-Bit Six-Function Program~~b[&\,~~er Three Output Compare Fu~Ylo’@:$ Two Input Capture FuqQQ*,,...