MC6805S2 MICROCOMPUTER Datasheet

MC6805S2 Datasheet PDF, Equivalent


Part Number

MC6805S2

Description

8-BIT MICROCOMPUTER

Manufacture

Motorola

Total Page 30 Pages
Datasheet
Download MC6805S2 Datasheet


MC6805S2
® MOTOROLA
I MC6805S2
8-BIT MICROCOMPUTER
WITH
ANALOG-TO-DIGITAL CONVERTER,
SERIAL PERIPHERAL INTERFACE,
AND THREE TIMERS
This document contains information on a new product. SpeCifications and information herein
are subject to change without notice.
3-390

MC6805S2
MC6805S2
TABLE OF CONTENTS
Paragraph
Number
Title
Page
Number
Section 1
Introduction
1.1 Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-399
1.2
Software Features. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-399
1.3 User Selectable Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-399
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.2
2.3
2.4
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.5.1
2.4.5.2
2.4.5.3
2.4.5.4
2.4.5.5
Section 2
Signal Description, Memory, CPU, and Registers
Signal Description ......................................... .
VCC and VSS ................................. .
INT1 and INT2 ...................................... .
XTAL and EXTAL ................................... .
Timer AIPCO and Timer B/PC1 .................................. .
Reset .................................................... .
Input/Output Lines (PAO-PA7, PBO-PB3, PCO-PC1, and PDO-PD6)
Memory ...................................................... .
Central Processing Unit ......................................... .
Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. ........ .
Accumulator (A) .................................... .
Index Register (X) . . . . . . . . . . . . . . . . . . . .
. ........ .
Program Counter (PC) .......... . . . . . .
. .................. .
Stack Pointer (SP) ................... . ..................... .
Condition Code Register (CC) . . . . . . . . . . . . . . . ................ .
Half Carry (H) .................................... " ....... .
Interrupt (I) ............................................... .
Negative (N) .............................................. .
Zero (Z) .................................................. .
Carry/Borrow(C) ......................................... .
3-400
3-400
3-400
3-400
3-400
3-400
3-401
3-401
3-401
3-401
3-403
3-403
3-404
3-404
3-404
3-404
3-404
3-404
3-404
3-404
3.1
3.1.1
3.1.2
3.1.3
3.2
3.3
3.4
Section 3
Timers
Timer A ................................ .
Direct Loading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. ......... .
Asynchronous External Event Loading ... ~ ........................ .
Auto-Loading ................................................ .
Timer A Control Register'. . . . . . . . . ............................... .
Timer B .................... " . '" . " ........... ' ................. .
Timer B Control and Status Register. . .
. ................... .
3-406
3-407
3-407
3-407
3-407
3-409
3-411
I
3-391


Features ® MOTOROLA I MC6805S2 8-BIT MICROCOMPUT ER WITH ANALOG-TO-DIGITAL CONVERTER, SE RIAL PERIPHERAL INTERFACE, AND THREE TI MERS This document contains information on a new product. SpeCifications and i nformation herein are subject to change without notice. 3-390 MC6805S2 TABLE OF CONTENTS Paragraph Number Title Page Number Section 1 Introduction 1 .1 Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-399 1.2 Software Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-399 1.3 User Selectable Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-399 2.1 2.1.1 2.1.2 2.1.3 2. 1.4 2.1.5 2.1.6 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2.4.4 2.4.5 2.4.5.1 2.4.5.2 2.4. 5.3 2.4.5.4 2.4.5.5 Section 2 Signal Description, Memory, CPU, and Registers Signal Description .................. ....................... . VCC and VSS ..........................
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