UPD754304GS datasheet(4/74 Pages) NEC

4 / 74 page

µPD754302, 754304, 754302(A), 754304(A)

CONTENTS

PIN CONFIGURATION (Top View) ······································································································ 6

BLOCK DIAGRAM ······························································································································· 8

PIN FUNCTION ···································································································································· 9

3.1

Port Pins ····································································································································· 9

3.2

Non-port Pins ···························································································································· 10

3.3

Pin Input/Output Circuits ········································································································· 11

3.4

Recommended Connections for Unused Pins ······································································· 13

SWITCHING FUNCTION BETWEEN Mk I MODE AND Mk II MODE ················································ 14

4.1

Difference between Mk I and Mk II Modes ·············································································· 14

4.2

Setting Method of Stack Bank Select Register (SBS) ··························································· 15

MEMORY CONFIGURATION ············································································································· 16

PERIPHERAL HARDWARE FUNCTIONS ························································································· 20

6.1

Digital Input Ports ···················································································································· 20

6.2

Clock Generator ······················································································································· 21

6.3

Clock Output Circuit ················································································································ 22

6.4

Basic Interval Timer/Watchdog Timer ···················································································· 23

6.5

Timer/Event Counter ················································································································ 24

6.6

Serial Interface ·························································································································· 27

6.7

Bit Sequential Buffer ················································································································ 29

INTERRUPT FUNCTION AND TEST FUNCTION ·············································································· 30

STANDBY FUNCTION ······················································································································· 32

RESET FUNCTION ···························································································································· 33

10. MASK OPTION ··································································································································· 36

11. INSTRUCTION SETS ························································································································· 37

12. ELECTRICAL SPECIFICATIONS ······································································································ 49

13. CHARACTERISTICS CURVES (REFERENCE VALUES) ································································· 61

14. PACKAGE DRAWING ······················································································································· 63

15. RECOMMENDED SOLDERING CONDITIONS ················································································· 64

UPD754304GS Datasheet(PDF) 4 Page - NEC

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