Description
The IA6805E2 (CMOS) Microprocessor Unit (MPU) is a low cost, low power MPU. It features a CPU, on-chip RAM, parallel I/O compatibility with pins programmable as input or  output. The following paragraphs will further describe this system block diagram and design in more detail.

FEATURES
• Form, Fit, and Function Compatible with the Harrisã CDP6805E2CE and Motorolaã MC146805E2
• Internal 8-bit Timer with 7-Bit Programmable Prescaler
• On-chip Clock
• Memory Mapped I/O
• Versatile Interrupt Handling
• True Bit Manipulation
• Bit Test and Branch Instruction
• Vectored Interrupts
• Power-saving STOP and WAIT Modes
• Fully Static Operation
• 112 Bytes of RAM