Sonic Alert msm83c154s, msm80154s, msm85c154hvs user manual Contents

CONTENTS

1. INTRODUCTION

1.1	MSM80C154S/MSM83C154S/MSM85C154HVS Outline	3
1.2	MSM80C154S/MSM83C154S Features	5
1.3	Additional Features in MSM80C154S/MSM83C154S/MSM85C154HVS	7

2. SYSTEM CONFIGURATION

2.1	MSM80C154S/MSM83C154S/MSM85C154HVS Logic Symbols			11
2.2	MSM80C154S/MSM83C154S Pin Layout			12
2.2.1		MSM80C154S/MSM83C154S external dimensions		15
2.2.2		MSM85C154HVS pin layout and external dimensions		17
2.3	MSM80C154S Block Diagram			18
2.4	MSM83C154S Block Diagram			19
2.5	MSM85C154HVS Block Diagram			20
2.6	Timing and Control			21
2.6.1		Outline of MSM80C154S/MSM83C154S timing		21
2.6.2		Major synchronizing signals		23
		(1)	ALE	23
		(2)	PSEN	23
		(3)	WR	23
		(4)	RD	23
2.6.3		MSM80C154S fundamental operation time charts		24
		(1)	External program memory read cycle timing chart	24
		(2) MOVX A, @Rr		24
		(3) MOVX @Rr, A		25
		(4) MOVX A, @DPTR		25
		(5) MOVX @DPTR, A		26
		(6)	MOV direct, PORT[0, 1, 2, 3] execution	26
2.6.4		MSM83C154S fundamental operation time charts		27
		(1) MOVX A, @Rr		27
		(2) MOVX @Rr, A		27
		(3) MOVX A, @DPTR		28
		(4) MOVX @DPTR, A		28
		(5)	MOV direct, PORT[0, 1, 2, 3] execution	29
2.7	Instruction Register (IR) and Instruction Decoder (PLA)			30
2.8	Arithmetic Operation Section			31
		(1)	Outline	31
		(2)	Arithmetic operation instruction decoder	31
		(3)	Arithmetic and logic unit (ALU)	31
2.9	Program Counter			32
2.10 Program Memory and External Data Memory				33
2.10.1		MSM80C154S/MSM83C154S program area and
		external ROM connections		33
2.10.2		Procedures and circuit connections used when external
		data memory (RAM) is accessed by data pointer (DPTR)		35
2.10.3		Procedures and circuit connections used when external
		data memory (RAM) is accessed by registers R0 and R1		38