MC68HC05L28 查看數據表（PDF） - Freescale Semiconductor

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产品描述 (功能)

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MC68HC05L28

Microcontrollers

Freescale Semiconductor 

Freescale Semiconductor, Inc.

TABLE OF CONTENTS

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1

INTRODUCTION

1.1 Features................................................................................................................ 1-1

1.2 Mask options on the MC68HC05L28.................................................................... 1-3

1.2.1 Option register (OPT)...................................................................................... 1-3

2

MODES OF OPERATION AND PIN DESCRIPTIONS

2.1 Modes of operation ............................................................................................... 2-1

2.1.1 MC68HC05L28 modes of operation................................................................ 2-2

2.1.1.1

Single chip mode....................................................................................... 2-2

2.1.1.2

RAM bootloader mode .............................................................................. 2-2

2.1.2 MC68HC705L28 modes of operation.............................................................. 2-4

2.1.2.1

EPROM bootloader mode ......................................................................... 2-4

2.1.2.2

RAM bootloader mode .............................................................................. 2-4

2.2 Pin descriptions .................................................................................................... 2-6

2.2.1 VDD and VSS ................................................................................................. 2-6

2.2.2

IRQ0 ............................................................................................................... 2-6

2.2.3 IRQ1................................................................................................................ 2-6

2.2.4 IRQ2................................................................................................................ 2-6

2.2.5 OSC1, OSC2 .................................................................................................. 2-7

2.2.5.1

Crystal ....................................................................................................... 2-8

2.2.5.2

External clock ............................................................................................ 2-8

2.2.6

RESET............................................................................................................ 2-8

2.2.7 PA0 – PA7, PB0 – PB7.................................................................................... 2-9

2.2.8 PD0 – PD5 ...................................................................................................... 2-9

2.2.9 BP0 – BP3, FP0 – FP17 ................................................................................. 2-9

2.2.10 AD0 – AD1, VREFH/VREFL ........................................................................... 2-9

2.3 Low power modes................................................................................................. 2-10

2.3.1 STOP .............................................................................................................. 2-10

2.3.2 WAIT ............................................................................................................... 2-12

2.3.3 Data retention ................................................................................................. 2-12

MC68HC05L28

TABLE OF CONTENTS

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