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UPD17137A Datasheet(PDF) 8 Page - NEC |
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UPD17137A Datasheet(HTML) 8 Page - NEC |
8 / 292 page - i - TABLE OF CONTENTS CHAPTER 1 GENERAL DESCRIPTION ................................................................................................. 1 1.1 FUNCTION LIST ........................................................................................................................................ 2 1.2 ORDERING INFORMATION ..................................................................................................................... 3 1.3 BLOCK DIAGRAM .................................................................................................................................... 4 1.4 PIN CONFIGURATION (TOP VIEW) ........................................................................................................ 5 CHAPTER 2 PIN FUNCTIONS ............................................................................................................... 9 2.1 PIN FUNCTIONS ....................................................................................................................................... 9 2.2 PIN INPUT/OUTPUT CIRCUIT ............................................................................................................... 11 2.3 PROCESSING OF UNUSED PINS ......................................................................................................... 14 2.4 NOTES ON USING RESET PIN AND P1B0 PIN ................................................................................... 15 CHAPTER 3 PROGRAM COUNTER (PC) ........................................................................................... 17 3.1 PROGRAM COUNTER CONFIGURATION ............................................................................................ 17 3.2 PROGRAM COUNTER OPERATION ..................................................................................................... 17 3.2.1 At Reset ..................................................................................................................................... 18 3.2.2 During Execution of the Branch Instruction (BR) ..................................................................... 18 3.2.3 During Execution of Subroutine Calls (CALL) .......................................................................... 19 3.2.4 During Execution of Return Instructions (RET, RETSK, RETI) ............................................... 20 3.2.5 During Table Reference (MOVT) .............................................................................................. 20 3.2.6 During Execution of Skip Instructions (SKE, SKGE, SKLT, SKNE, SKT, SKF) ...................... 21 3.2.7 When an Interrupt Is Received ................................................................................................. 21 CHAPTER 4 PROGRAM MEMORY (ROM) .......................................................................................... 23 4.1 PROGRAM MEMORY CONFIGURATION ............................................................................................. 23 4.2 PROGRAM MEMORY USAGE ............................................................................................................... 24 4.2.1 Flow of the Program .................................................................................................................. 24 4.2.2 Table Reference ......................................................................................................................... 27 CHAPTER 5 DATA MEMORY (RAM) .................................................................................................... 31 5.1 DATA MEMORY CONFIGURATION ....................................................................................................... 31 5.1.1 System Register (SYSREG) ..................................................................................................... 32 5.1.2 Data Buffer (DBF) ...................................................................................................................... 32 5.1.3 General Register (GR) .............................................................................................................. 33 5.1.4 Port Registers ............................................................................................................................ 33 5.1.5 General Data Memory ............................................................................................................... 34 5.1.6 Unmounted Data Memory ......................................................................................................... 34 |
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Similar Description - UPD17137A |
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