MC146805G2

® MOTOROLA MC146805G2 Advance Information 8-BIT MICROCOMPUTER UNIT The MC146805G2 Microcomputer Unit (MCU) belongs to the M146805 CMOS Family of Microcomputers. This 8-bit MCU contains on-chip oscillator, CPU, RAM, ROM, I/O, and TIMER. The fully static design allows operation at frequencies down to dc, further reducing its already low-power consumption. It is a low-power processor designed for low-end to mid-range applications in the consumer, automotive, industrial, and communications markets where very low power consumption constitutes an important factor. The following are the major features of the MC146805G2 MCU. HARDWARE FEATURES Typical Full Speed Operating Power of 12 mW at 5 V Typical WAIT Mode Power of 4 mW Typical STOP Mode Power of 5 p.W Fully Static Operation 112 Bytes of On-Chip RAM 2106 Bytes of On-Chip ROM 32 Bidirectional I/O Lines High Current Drive Internal 8-Bit Timer with Software Programmable 7-Bit Prescaler External Timer Input External and Timer Interrupts Self-Check Mode Master Reset and Power-On Reset Single 3 to 6 Volt Supply On-Chip Oscillator with RC or Crystal Mask Options 4O-Pin Dual-In-Line Package Chip Carrier Also Available SOFTWARE FEATURES Similar to the MC6800 Efficient Use of Program Space Versatile Interrupt Handling True Bit Manipulation AddreSSing Modes with Indexed Addressing for Tables Efficient Instruction Set Memory Mapped I/O Most Self-Check Routines User Callable Two Power Sav...