UPD1724X View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD1724X

4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS

NEC => Renesas Technology 

µPD17240, 17241, 17242, 17243, 17244, 17245, 17246

8. INTERRUPT FUNCTIONS ........................................................................................................... 62

8.1 Interrupt Sources .............................................................................................................. 62

8.2 Hardware of Interrupt Controller .................................................................................... 63

8.3 Interrupt Sequence ........................................................................................................... 66

9. STANDBY FUNCTIONS ............................................................................................................... 68

9.1 HALT Mode ......................................................................................................................... 68

9.2 HALT Instruction Execution Conditions ........................................................................ 69

9.3 STOP Mode ........................................................................................................................ 70

9.4 STOP Instruction Execution Conditions ........................................................................ 71

9.5 Releasing Standby Mode ................................................................................................. 72

10. RESET .......................................................................................................................................... 73

10.1 Reset by Reset Signal Input ............................................................................................ 73

10.2 Reset by Watchdog Timer (with RESET Pin Internally Pulled Down) ........................ 73

10.3 Reset by Stack Pointer (with RESET Pin Internally Pulled Down) ............................. 74

11. LOW-VOLTAGE DETECTOR (WITH RESET PIN INTERNALLY PULLED DOWN) ................. 75

12. ASSEMBLER RESERVED WORDS ............................................................................................ 76

12.1 Mask Option Directives .................................................................................................... 76

12.2 Reserved Symbols ............................................................................................................ 77

13. INSTRUCTION SET ..................................................................................................................... 83

13.1 Instruction Set Outline ..................................................................................................... 83

13.2 Legend ................................................................................................................................ 84

13.3 List of Instructions ........................................................................................................... 85

13.4 Assembler (RA17K) Embedded Macro Instructions .................................................... 87

14. ELECTRICAL SPECIFICATIONS ................................................................................................ 88

15. APPLICATION CIRCUIT EXAMPLE ........................................................................................... 94

16. PACKAGE DRAWING ................................................................................................................. 95

17. RECOMMENDED SOLDERING CONDITIONS ........................................................................ 96

APPENDIX A DIFFERENCES BETWEEN µPD17246 AND µPD17P246 ....................................... 97

APPENDIX B DEVELOPMENT TOOLS ............................................................................................ 98

8

Data Sheet U15002EJ1V0DS

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