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Table of Contents Part I — Programming Model Chapter 1 Product Overview Overview........................................................................................................................................................1-1 OTP ...............................................................................................................................................................1-1 Features ........................................................................................................................................................1-2 Block Diagram ...............................................................................................................................................1-3 Pin Assignments............................................................................................................................................1-4 Pin Descriptions ............................................................................................................................................1-5 Pin Circuit Diagrams......................................................................................................................................1-8 Chapter 2 Address Spaces Program Memory (ROM)...............................................................................................................................2-1 Overview...............................................................................................................................................2-1 General-Purpose Memory Areas..........................................................................................................2-2 Vector Address Area ............................................................................................................................2-2 Instruction Reference Area...................................................................................................................2-5 Data Memory (RAM) .....................................................................................................................................2-7 Overview...............................................................................................................................................2-7 Working Registers ................................................................................................................................2-11 Stack Operations...........................................................................................................................................2-15 Stack Pointer (SP) ................................................................................................................................2-15 Push Operations ...................................................................................................................................2-16 Pop Operations.....................................................................................................................................2-17 Bit Sequential Carrier (BSC) .........................................................................................................................2-18 Program Counter (PC) ..................................................................................................................................2-19 Program Status Word (PSW) ........................................................................................................................2-19 Interrupt Status Flags (IS0, IS1) ...........................................................................................................2-20 EMB Flag (EMB)...................................................................................................................................2-21 ERB Flag (ERB)....................................................................................................................................2-22 Skip Condition Flags (SC2, SC1, SC0) ................................................................................................2-23 Carry Flag (C) .......................................................................................................................................2-23 S3C72P9/P72P9 MICROCONTROLLER v
