IC - 40 pin DIP RIOT (RAM Input/Output Timer) IC

Rockwell R6532 Ram Input Output Timer 40 pin integrated circuit
used in many Gottlieb pinball CPU boards.

• 128 x 8 satic RAM
  
• Two 8 bit bidirectional data ports
  
• Programmable internal timer with interrupt
  
• TTL & CMOS compatible peripheral lines
  
• One port has direct transistor drive capability
  
• Programmable edge-sensitive interrupt input
  
• 8 bit bi-directional data bus
  
• 6500/6800 bus compatible
  
• Single +5v power supply
  

Reference:

• 6532
  
• R6532
  
• R6532P
  
• XO-361
  
• XO361