UPD754144 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD754144

4-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD754144, 754244

CONTENTS

1. PIN CONFIGURATION (TOP VIEW) .................................................................................................... 6

2. BLOCK DIAGRAM ................................................................................................................................ 8

3. PIN FUNCTION ..................................................................................................................................... 9

3.1 Port Pins ...................................................................................................................................... 9

3.2 Non-port Pins ............................................................................................................................ 10

3.3 Pin Input/Output Circuits ......................................................................................................... 11

3.4 Recommended Connection of Unused Pins .......................................................................... 12

4. SWITCHING FUNCTION BETWEEN MK I MODE AND MK II MODE ............................................... 13

4.1 Difference between Mk I and Mk II Modes .............................................................................. 13

4.2 Setting Method of Stack Bank Select Register (SBS) ........................................................... 14

5. MEMORY CONFIGURATION ............................................................................................................. 15

6. EEPROM .............................................................................................................................................18

7. PERIPHERAL HARDWARE FUNCTIONS ......................................................................................... 19

7.1 Digital Input/Output Ports ........................................................................................................ 19

7.2 Clock Generator ........................................................................................................................19

7.3 Basic Interval Timer/Watchdog Timer ..................................................................................... 22

7.4 Timer Counter ........................................................................................................................... 23

7.5 Programmable Threshold Port (Analog Input Port) ............................................................... 27

7.6 Bit Sequential Buffer ....... 16 Bits ............................................................................................ 28

8. INTERRUPT FUNCTION AND TEST FUNCTION .............................................................................. 29

9. STANDBY FUNCTION ........................................................................................................................31

10. RESET FUNCTION .............................................................................................................................32

10.1 Configuration and Operation Status of RESET Function ..................................................... 32

10.2 Watchdog Flag (WDF), Key Return Flag (KRF) ...................................................................... 36

11. MASK OPTION ...................................................................................................................................38

12. INSTRUCTION SETS ..........................................................................................................................39

13. ELECTRICAL SPECIFICATIONS ...................................................................................................... 48

13.1 µPD754144 ................................................................................................................................. 48

13.2 µPD754244 ................................................................................................................................. 56

14. CHARACTERISTICS CURVES (REFERENCE VALUES) ................................................................. 67

14.1 µPD754144 ................................................................................................................................. 67

14.2 µPD754244 ................................................................................................................................. 69

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