W65C02S Datasheet, PDF (3/40 Pages) List of Unclassifed Manufacturers – Microprocessor

The Western Design Center, Inc.
W65C02S Data Sheet
TABLE OF CONTENTS
1 INTRODUCTION................................................................................................................................................................................5
1.1 FEATURES OF THE W65C02S ..................................................................................................................................................... 5
2 FUNCTIONAL DESCRIPTION......................................................................................................................................................6
2.1 INSTRUCTION REGISTER (IR) AND DECODE ........................................................................................................................... 6
2.2 TIMING CONTROL UNIT (TCU) ................................................................................................................................................. 6
2.3 ARITHMETIC AND LOGIC UNIT (ALU) ..................................................................................................................................... 6
2.4 ACCUMULATOR REGISTER (A)................................................................................................................................................... 6
2.5 INDEX REGISTERS (X AND Y)...................................................................................................................................................... 6
2.6 PROCESSOR STATUS REGISTER (P) ........................................................................................................................................... 6
2.7 PROGRAM COUNTER REGISTER (PC)....................................................................................................................................... 6
2.8 STACK POINTER REGISTER (S) .................................................................................................................................................. 7
3 PIN FUNCTION DESCRIP TION ...................................................................................................................................................9
3.1 ADDRESS BUS (A0-A15)............................................................................................................................................................... 9
3.2 BUS ENABLE (BE).......................................................................................................................................................................... 9
3.3 DATA BUS (D0-D7)........................................................................................................................................................................ 9
3.4 INTERRUPT REQUEST (IRQB).................................................................................................................................................... 9
3.5 MEMORY LOCK (MLB) ............................................................................................................................................................... 9
3.6 NON-MASKABLE INTERRUPT (NMIB)...................................................................................................................................... 9
3.7 NO CONNECT (NC) ..................................................................................................................................................................... 10
3.8 PHASE 2 IN (PHI2), PHASE 2 OUT (PHI2O) AND PHASE 1 OUT (PHI1O) ...................................................................... 10
3.9 READ/WRITE (RWB) ................................................................................................................................................................. 10
3.10 READY (RDY) .............................................................................................................................................................................. 10
3.11 RESET (RESB) ............................................................................................................................................................................. 11
3.12 SET OVERFLOW (SOB).............................................................................................................................................................. 11
3.13 SYNCHRONIZE WITH OPCODE FETCH (SYNC)................................................................................................................... 11
3.14 POWER (VDD) AND GROUND (VSS)........................................................................................................................................ 11
3.15 VECTOR PULL (VPB) ................................................................................................................................................................. 11
4 ADDRESSING MODES ...................................................................................................................................................................16
4.1 ABSOLUTE A.................................................................................................................................................................................. 16
4.2 ABSOLUTE INDEXED INDIRECT (A,X) ...................................................................................................................................... 16
4.3 ABSOLUTE INDEXED WITH X A,X............................................................................................................................................. 16
4.4 ABSOLUTE INDEXED WITH Y A, Y ............................................................................................................................................ 17
4.5 ABSOLUTE INDIRECT (A)............................................................................................................................................................ 17
4.6 ACCUMULATOR A ....................................................................................................................................................................... 17
4.7 IMMEDIATE ADDRESSING #....................................................................................................................................................... 17
4.8 IMPLIED I....................................................................................................................................................................................... 17
4.9 PROGRAM COUNTER RELATIVE R........................................................................................................................................... 18
4.10 STACK S ......................................................................................................................................................................................... 18
4.11 ZERO PAGE ZP.............................................................................................................................................................................. 18
4.12 ZERO PAGE INDEXED INDIRECT (ZP,X) .................................................................................................................................. 18
4.13 ZERO PAGE INDEXED WITH X ZP,X......................................................................................................................................... 19
4.14 ZERO PAGE INDEXED WITH Y ZP, Y ........................................................................................................................................ 19
4.15 ZERO PAGE INDIRECT (ZP)........................................................................................................................................................ 19
4.16 ZERO PAGE INDIRECT INDEXED WITH Y (ZP), Y .................................................................................................................. 19
5 OPERATION TABLES ....................................................................................................................................................................21
6 DC, AC AND TIMING CHARACTERISTICS .........................................................................................................................23
The Western Design Center, Inc.
W65C02S Data Sheet
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