
OKI CMOS 8-Bit Single-Chip Microcontroller MSM80C31 MSM80C51 
  User's Manual (First Edition December 1985) 
 OKI 
  CMOS 8-Bit Single-Chip Microcontroller MSM80C31 / MSM80C51 User's Manual First 
  Edition December 1985 (PDF - 4.24Mb -182 pages)
OKI 
  CMOS 8-Bit Single-Chip Microcontroller MSM80C31 / MSM80C51 User's Manual First 
  Edition December 1985 (PDF - 4.24Mb -182 pages) 
  
  MSM80C31 / MSM80C51 System Configuration
  logic symbols
  Pin Layout
  External Dimensions
  MSM80C31 internal BlockDiagram
  MSM80C51 Internal Block Diagram
  Timing and control
  Instruction register (IR) and Instruction Decoder (PLA)
  Arithmetic Operation Section
  Program Counter
  Program Memory and External Data Memory
MSM80C31 / MSM80C51 Control
MSM80C31 / MSM80C51 Internal Specifications
Input/ Output Ports
  
  MSM80C31 / MSM80C51 Electrical Characteristics
  
  Description of instructions
MSM80C51VS PIGGY Back