68HC05PL4 datasheet(3/98 Pages) FREESCALE

3 / 98 page

April 30, 1998

GENERAL RELEASE SPECIFICATION

MC68HC05PL4

REV 2.0

TABLE OF CONTENTS

Section

Page

SECTION 1

GENERAL DESCRIPTION

1.1

FEATURES...................................................................................................... 1-1

1.2

MCU BLOCK DIAGRAM.................................................................................. 1-2

1.3

PIN ASSIGNMENTS........................................................................................ 1-3

1.4

PIN DESCRIPTIONS ....................................................................................... 1-4

1.4.1

VDD, VSS.................................................................................................... 1-4

1.4.2

OSC1, OSC2 ............................................................................................... 1-4

1.4.3

RESET......................................................................................................... 1-4

1.4.4

LED/IRQ ...................................................................................................... 1-4

1.4.5

PA0, PA1/DTMF, PA2/TCAP, PA3/TCMP, PA4-PA6.................................. 1-5

1.4.6

PB0/KBI0-PB3/KBI3, PB4-PB7.................................................................... 1-5

1.4.7

PC0-PC7...................................................................................................... 1-6

SECTION 2

MEMORY

2.1

MEMORY MAP ................................................................................................ 2-1

2.2

I/O REGISTERS .............................................................................................. 2-2

2.3

RAM ................................................................................................................. 2-2

2.4

ROM................................................................................................................. 2-2

2.5

COP WATCHDOG REGISTER (COPR).......................................................... 2-2

SECTION 3

CENTRAL PROCESSING UNIT

3.1

REGISTERS .................................................................................................... 3-1

3.2

ACCUMULATOR (A) ....................................................................................... 3-2

3.3

INDEX REGISTER (X)..................................................................................... 3-2

3.4

STACK POINTER (SP).................................................................................... 3-2

3.5

PROGRAM COUNTER (PC) ........................................................................... 3-2

3.6

CONDITION CODE REGISTER (CCR)........................................................... 3-3

3.6.1

Half Carry Bit (H-Bit).................................................................................... 3-3

3.6.2

Interrupt Mask (I-Bit).................................................................................... 3-3

3.6.3

Negative Bit (N-Bit)...................................................................................... 3-3

3.6.4

Zero Bit (Z-Bit) ............................................................................................. 3-3

3.6.5

Carry/Borrow Bit (C-Bit) ............................................................................... 3-4

SECTION 4

INTERRUPTS

4.1

INTERRUPT VECTORS .................................................................................. 4-1

4.2

INTERRUPT PROCESSING ........................................................................... 4-2

4.3

SOFTWARE INTERRUPT ............................................................................... 4-4

4.4

EXTERNAL INTERRUPT ................................................................................ 4-4

4.4.1

LED/IRQ Pin ................................................................................................ 4-4

Freescale Semiconductor, Inc.

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