WESTERN DESIGN CENTER

W65C265S

March 1, 2000

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rights reserved, including the right of reproduction in whole or
in part in any form.

WESTERN DESIGN CENTER

W65C265S

March 1, 2000

TABLE OF CONTENTS

INTRODUCTION

SECTION 1 W65C265S FUNCTION DESCRIPTION

1.1

The W65C816S Static 16-bit Microprocessor Core

1.2

8K x 8 ROM

1.3

576 x 8 RAM

1.4

Bus Control Register

Table 1-1 BCR7 and BE Control

Figure 1-1 BE Timing Relative to RESB Input

Figure 1-2 Bus Control Register

1.5

The Timers

Table 1-2 The Timer Functions

Figure 1-3 Timer Control Register

Figure 1-4 Timer Enable Register

1.6

Interrupt Flag Registers

1.7

Interrupt Enable Registers

Figure 1-5 Timer Interrupt Enable Register and Timer Interrupt Flag Register

Figure 1-6 Edge Interrupt Enable Register and Edge Interrupt Flag Register

Figure 1-7 UART Interrupt Enable Register and UART Interrupt Flag Reg.

1.8

Asynchronous I/O Data Rate Generation

1.9

Universal Asynchronous Receiver/Transmitters

Figure 1-8 Asynchronous Transmitter Mode with Parity

Figure 1-9 Asynchronous Data Timing for 7-bit Data without Parity

Figure 1-10 ACSRx Bit Assignments

1.10

The Parallel Interface Bus

Figure 1-11 The PIB Registers

Figure 1-12 Parallel Interface Bus Enable and Flag Registers

1.11

Twin Tone Generators

Figure 1-13 Tone Generator Block Diagram

Table 1-4 Comm. Freq. Generated by the Tone Generator Timers 5 and 6

1.12

Processor Defined Cache Control

Figure 1-14 System Speed Control Register

Figure 1-15 System Speed Change Timing Diagram

1.13

Programming Model and Memory Map

Figure 1-16 W65C816S Programming Model and Memory Map

Table 1-5 System Memory Map

Table 1-6A I/O Register Memory Map

Table 1-6B Control and Status Register Memory Map

Table 1-6C Timer Register Memory Map

Table 1-6D Communication Register Memory Map

Table 1-7A Emulation Mode Vector Table

Table 1-7B Native Mode Vector Table

Table 1-8A W65C265S 84 Lead Pin Map

WESTERN DESIGN CENTER

W65C265S

March 1, 2000

SECTION 2 PIN FUNCTION DESCRIPTION

Figure 2-1 W65C265S Interface Diagram

Figure 2-2 W65C265S 84 Lead Chip Carrier Pinout

Figure 2-3 W65C265S 100 Lead Quad Flat Pack Pinout

2.1

Write Enable

2.2

RUN and SYNC outputs with WAI and STP defined

2.3

Phase 2 Clock Output

2.4

Clock Inputs

2.5

Bus Enable and RDY Input

Figure 2-5 BE Timing Relative to PHI2

2.6

Reset Input/Output

2.7

Positive Power Supply

2.8

Internal Logic Ground

2.9

I/O Port Pins

2.10

Address Bus

2.11

Data Bus

2.12

Positive Edge Interrupt inputs

2.13

Negative Edge Interrupt inputs

2.14

Chip Select outputs

2.15

Level Sensitive Interrupt Request input

2.16

Non-Maskable Edge and ABORT Interrupt Input

2.17

Asynchronous Receiver Inputs/Transmitter Outputs

2.18

Timer 4 Input and Output

2.19

Bus Available/Disable Output Data

2.20

Tone Generator Outputs

2.21

Parallel Interface Bus

2.22

Pulse Width Measurement Input

SECTION 3 TIMING, AC AND DC CHARACTERISTICS

3.1

Absolute Maximum Ratings

Table 3-1 Absolute Maximum Ratings

3.2

DC Characteristics

Table 3-2 DC Characteristics

3.3

AC Characteristics

Table 3-3 AC Characteristics

3.4

AC Parameters

Table 3-4 AC Parameters

3.5

AC Timing Diagram Notes

3.6

AC Timing Diagrams

Figure 3-1 AC Timing Diagram #1

Figure 3-2 AC Timing Diagram #2

Figure 3-3 AC Timing Diagram #3

Figure 3-4 AC Timing Diagram #4

WESTERN DESIGN CENTER

W65C265S

March 1, 2000

SECTION 4 ORDERING INFORMATION

SECTION 5 APPLICATION INFORMATION

5.1

W65C265S Block Diagrams

Figure 5-1 W65C265S Block Diagram

Figure 5-2 W65C265S Interrupt Controller Block Diagram

Figure 5-3 W65C265S Timers 0-7 Block Diagram

Figure 5-4 W65C265S UART Block Diagram

Figure 5-5 W65C265S Parallel Interface Bus Diagram

Figure 5-6 W65C265S Tone Generator Block Diagram

5.2

W65C265DB Developer Board

Figure 5-7 W65C265DB Developer Board

5.3

External ROM Startup with W65C265S Mask ROM

5.4

Recommended clock and fclock Oscillators

Figure 5-8 Oscillator Circuit

Figure 5-9 Circuit Board Layout for Oscillator

Figure 5-10 Resonator Circuit

Электронный компонент: W65C265S