UPD7554AA 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD7554AA

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD7554A, 7554A(A)

CONTENTS

1. PIN FUNCTIONS ........................................................................................................................................... 6

1.1 PORT FUNCTIONS ................................................................................................................................................. 6

1.2 OTHER THAN PORTS ............................................................................................................................................ 6

1.3 PIN MASK OPTION ................................................................................................................................................ 7

1.4 CAUTION ON USE OF P00/INT0 PIN AND RESET PIN ..................................................................................... 8

1.5 PIN INPUT/OUTPUT CIRCUITS ............................................................................................................................ 9

1.6 RECOMMENDED CONNECTION OF UNUSED µPD7554A PINS .................................................................... 12

1.7 OPERATION OF INPUT/OUTPUT PORTS .......................................................................................................... 13

2. INTERNAL BLOCK FUNCTIONS ............................................................................................................... 15

2.1 PROGRAM COUNTER (PC): 10 BITS .................................................................................................................. 15

2.2 STACK POINTER (SP): 6 BITS ............................................................................................................................ 16

2.3 PROGRAM MEMORY (ROM): 1024 WORDS × 8 BITS ..................................................................................... 17

2.4 GENERAL REGISTER ........................................................................................................................................... 17

2.5 DATA MEMORY (RAM): 64 × 4 BITS ................................................................................................................. 18

2.6 ACCUMULATOR (A): 4 BITS ............................................................................................................................... 19

2.7 ARITHMETIC LOGIC UNIT (ALU): 4 BITS .......................................................................................................... 19

2.8 PROGRAM STATUS WORD (PSW): 4 BITS ...................................................................................................... 19

2.9 SYSTEM CLOCK GENERATOR ........................................................................................................................... 20

2.10 CLOCK CONTROL CIRCUIT ................................................................................................................................. 21

2.11 TIMER/EVENT COUNTER ................................................................................................................................... 22

2.12 SERIAL INTERFACE ............................................................................................................................................. 23

2.13 TEST CONTROL CIRCUIT .................................................................................................................................... 25

3. STANDBY FUNCTIONS .............................................................................................................................. 27

3.1 STOP MODE .......................................................................................................................................................... 27

3.2 HALT MODE .......................................................................................................................................................... 27

3.3 CANCELLING THE STANDBY MODE ................................................................................................................. 28

4. RESET FUNCTIONS .................................................................................................................................... 29

4.1 DETAILS OF INITIALIZATION ............................................................................................................................. 29

5. µPD7554A INSTRUCTION SET ............................................................................................................... 30

6. ELECTRICAL SPECIFICATIONS .............................................................................................................. 35

7. CHARACTERISTICS CURVES .................................................................................................................. 47

8. µPD7554A APPLIED CIRCUITS ............................................................................................................... 51

9. PACKAGE INFORMATION ....................................................................................................................... 52

10. RECOMMENDED PACKAGING PATTERN OF PLASTIC SOP (REFERENCE) ..................................... 56

11. RECOMMENDED SOLDERING CONDITIONS ....................................................................................... 57

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