UPD17P136ACT datasheet(12/292 Pages) NEC

12 / 292 page

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CHAPTER 14 INTERRUPT FUNCTIONS ............................................................................................ 149

14.1 INTERRUPT SOURCE TYPES AND VECTOR ADDRESSES ............................................................ 150

14.2 HARDWARE COMPONENTS OF THE INTERRUPT CONTROL CIRCUIT ....................................... 151

14.3 INTERRUPT SEQUENCE ..................................................................................................................... 158

14.3.1

Receiving an Interrupt ............................................................................................................. 158

14.3.2

Return from the Interrupt Routine ........................................................................................... 159

14.3.3

Interrupt Accepting Timing ...................................................................................................... 160

14.4 MULTI-INTERRUPT ............................................................................................................................... 163

14.5 PROGRAM EXAMPLE OF INTERRUPT ............................................................................................. 164

CHAPTER 15 AC ZERO CROSS DETECTION .................................................................................. 167

CHAPTER 16 STANDBY FUNCTION .................................................................................................. 169

16.1 OVERVIEW OF THE STANDBY FUNCTION ....................................................................................... 169

16.2 HALT MODE .......................................................................................................................................... 170

16.2.1

Setting HALT Mode ................................................................................................................. 170

16.2.2

Start Address after HALT Mode Is Released ......................................................................... 170

16.2.3

HALT Mode Setting Conditions ............................................................................................... 172

16.3 STOP MODE .......................................................................................................................................... 174

16.3.1

Setting of STOP Mode ............................................................................................................ 174

16.3.2

Start Address after STOP Mode Is Released ........................................................................ 174

16.3.3

STOP Mode Setting Conditions .............................................................................................. 176

CHAPTER 17 RESET ........................................................................................................................... 179

17.1 RESET FUNCTION ................................................................................................................................ 180

17.2 RESETTING ........................................................................................................................................... 181

17.3 POWER-ON/POWER-DOWN RESET FUNCTION .............................................................................. 182

17.3.1

Conditions Required to Enable the Power-On Reset Function ............................................. 182

17.3.2

Power-On Reset Function and Operation .............................................................................. 183

17.3.3

Condition Required for Use of the Power-Down Reset Function .......................................... 185

17.3.4

Power-Down Reset Function and Operation .......................................................................... 185

CHAPTER 18 ONE-TIME PROM WRITING/VERIFYING.................................................................... 189

18.1 DIFFERENCES BETWEEN MASK ROM VERSION AND ONE-TIME PROM MODEL..................... 189

18.2 OPERATION MODE WHEN PROGRAM MEMORY IS WRITTEN/VERIFIED ................................... 190

18.3 WRITING PROCEDURE OF PROGRAM MEMORY ........................................................................... 191

18.4 READING PROCEDURE OF PROGRAM MEMORY .......................................................................... 192

CHAPTER 19 INSTRUCTION SET ...................................................................................................... 193

19.1 OVERVIEW OF THE INSTRUCTION SET ........................................................................................... 193

19.2 LEGEND ................................................................................................................................................. 194

19.3 LIST OF THE INSTRUCTION SET ....................................................................................................... 195

19.4 ASSEMBLER (AS17K) EMBEDDED MACRO INSTRUCTIONS ........................................................ 197

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