I/O

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I/O Gate Array Features

• 16-bit computer interface with 4-bit address decode
• Control registers (44 bits)
• Serial input/output with an 8-bit buffer
• Eight-bit counter/timer with an adjustable pre-divide
• Watch-dog timer for resetting microprocessor
• Digital-to-analog converter with a pulser mode
• Analog-to-digital converter with an eight-input MUX
• Dual eight-bit bi-directional parallel ports
• Vectored interrupt logic (five internal). The three
  external interrupts may be edge or level triggered
• Status register
• Crystal oscillator (generates computer clock)
• Power-on reset circuit