MC68HC901 Datasheet, PDF (6/73 Pages) Motorola, Inc – Multi-Function Peripheral

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
R_{Timer 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
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