68HC705BD7 datasheet(3/85 Pages) FREESCALE

3 / 85 page

Page i

MC68HC05BD7 Rev. 2.0

GENERAL RELEASE SPECIFICATION

TABLE OF CONTENTS

SECTION 1

GENERAL DESCRIPTION .............................................. 1

1.1

Features......................................................................................1

1.1.1

Hardware Features................................................................1

1.1.2

Software Features .................................................................3

1.2

Signal Description.......................................................................7

1.2.1

VDD and VSS........................................................................7

1.2.2

IRQ/VPP................................................................................7

1.2.3

EXTAL, XTAL ........................................................................7

1.2.3.1

Crystal Oscillator..............................................................7

1.2.4

RESET ..................................................................................8

1.2.5

PA0-PA7................................................................................8

1.2.6

PB0-PB5................................................................................8

1.2.7

PC0*/PWM8*-PC1*/PWM9* ..................................................8

1.2.8

PC2/PWM10/ADC0- PC5/PWM13/ADC3 .............................8

1.2.9

PC6/PWM14/VSYNO, PC7/PWM15/HSYNO .......................8

1.2.10

PD0*/SDA*, PD1*/SCL* ........................................................8

1.2.11

PD2***/CLAMP, PD3*/SOG ..................................................8

1.2.12

PWM0**-PWM7** ..................................................................9

1.2.13

HSYNC, VSYNC ...................................................................9

1.3

Options .......................................................................................9

SECTION 2

MEMORY ....................................................................... 11

2.1

COP ..........................................................................................15

2.2

ROM .........................................................................................15

2.3

EPROM.....................................................................................15

2.4

RAM..........................................................................................15

SECTION 3

CPU CORE..................................................................... 17

3.1

Registers...................................................................................17

3.1.1

Accumulator (A)...................................................................17

3.1.2

Index Register (X) ...............................................................18

3.1.3

Stack Pointer (SP)...............................................................18

3.1.4

Program Counter (PC) ........................................................18

3.1.5

Condition Code Register (CCR) ..........................................18

3.1.5.1

Half Carry Bit (H-Bit) ......................................................19

3.1.5.2

Interrupt Mask (I-Bit) ......................................................19

3.1.5.3

Negative Bit (N-Bit) ........................................................19

3.1.5.4

Zero Bit (Z-Bit) ...............................................................19

3.1.5.5

Carry/Borrow Bit (C-Bit) .................................................19

SECTION 4

INTERRUPTS................................................................. 21

4.1

CPU Interrupt Processing .........................................................21

4.2

Reset Interrupt Sequence.........................................................23

4.3

Software Interrupt (SWI) ...........................................................23

Freescale Semiconductor, Inc.

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