MC68HC901 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MC68HC901

Multi-Function Peripheral

Motorola => Freescale 

TABLE OF CONTENTS

Paragraph

Number

Title

Page

Number

1.1

1.2

2.1

2.2

2.3

2.4

2.4.1

2.4.2

2.4.3

2.4.4

2.5

2.6

2.7

2.7.1

2.7.2

2.7.3

2.7.4

2.8

2.9

2.9.1

2.9.2

2.9.3

2.10

2.10.1

2.10.2

2.10.3

2.10.4

2.11

2.11.1

2.11.2

2.12

Section 1

Introduction

Key Features .............................................................................................1-2

Register Programming ...............................................................................1-2

Y Section 2

Signal Description

R Power Supply (VCC and GND) .................................................................. 2-1

Clock (CLK) .............................................................................................. 2-2

A Data Bus (D7–D0) .................................................................................... 2-2

Asynchronous Bus Control ....................................................................... 2-2

Chip Select (CS) .................................................................................. 2-2

IN Data Strobe (DS) ................................................................................. 2-2

Read/Write (R/W) ................................................................................ 2-2

Data Transfer Acknowledge (DTACK) ................................................. 2-2

Register Select Bus (RS1–RS5) ............................................................... 2-2

IM Reset (RESET) ......................................................................................... 2-2

Interrupt Control ........................................................................................ 2-3

Interrupt Request (IRQ) ....................................................................... 2-3

L Interrupt Acknowledge (IACK) ............................................................. 2-3

Interrupt Enable In (IEI) ....................................................................... 2-3

Interrupt Enable Out (IEO) ................................................................... 2-3

E General Purpose I/O Interrupt Lines (I7–I0) ............................................. 2-3

Timer Control ............................................................................................ 2-4

Timer Inputs (TAI and TBI) .................................................................. 2-4

RTimer Outputs (TAO, TBO, TCO, and TDO) ....................................... 2-4

Timer Clock (XTAL1 and XTAL2) ........................................................ 2-4

PSerial I/O Control ...................................................................................... 2-4

Serial Input (SI) .................................................................................... 2-4

Serial Output (SO) ............................................................................... 2-5

Receiver Clock (RC) ............................................................................ 2-5

Transmitter Clock (TC) ........................................................................ 2-5

Direct Memory Access Control ................................................................. 2-5

Receiver Ready (RR) .......................................................................... 2-5

Transmitter Ready (TR) ....................................................................... 2-5

Signal Summary ....................................................................................... 2-5

MOTOROLA

MC68HC901 USER’S MANUAL

vii

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