UPD17134A datasheet(10/292 Pages) NEC

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UPD17134A Datasheet(PDF) 10 Page - NEC

Part #	UPD17134A

Description	4-BIT SINGLE-CHIP MICROCONTROLLER

Download	292 Pages

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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UPD17134A Datasheet(HTML) 10 Page - NEC

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CHAPTER 8

GENERAL REGISTER (GR) ........................................................................................... 67

8.1

GENERAL REGISTER CONFIGURATION ............................................................................................ 67

8.2

FUNCTIONS OF THE GENERAL REGISTER ....................................................................................... 67

CHAPTER 9

REGISTER FILE (RF) ...................................................................................................... 69

9.1

REGISTER FILE CONFIGURATION ...................................................................................................... 69

9.1.1

Configuration of the Register File ............................................................................................. 69

9.1.2

Relationship between the Register File and Data Memory ..................................................... 69

9.2

FUNCTIONS OF THE REGISTER FILE ................................................................................................. 70

9.2.1

Functions of the Register File ................................................................................................... 70

9.2.2

Functions of Control Register ................................................................................................... 70

9.2.3

Register File Manipulation Instructions .................................................................................... 71

9.3

CONTROL REGISTER ............................................................................................................................ 72

9.4

NOTES CONCERNING USE OF THE REGISTER FILE ....................................................................... 73

9.4.1

Notes Concerning Operation of the Control Register (Read-Only and Unused Registers) ... 73

9.4.2

CHAPTER 10

DATA BUFFER (DBF) ................................................................................................... 77

10.1 DATA BUFFER CONFIGURATION ........................................................................................................ 77

10.2 FUNCTIONS OF THE DATA BUFFER ................................................................................................... 78

10.2.1

Data Buffer and Peripheral Hardware ...................................................................................... 79

10.2.2

Data Transfer with Peripheral Hardware .................................................................................. 80

10.2.3

Table Reference ......................................................................................................................... 81

CHAPTER 11 ARITHMETIC AND LOGIC UNIT (ALU) ....................................................................... 83

11.1 ALU BLOCK CONFIGURATION ............................................................................................................ 83

11.2 FUNCTIONS OF THE ALU BLOCK ....................................................................................................... 83

11.2.1

Functions of the ALU ................................................................................................................. 83

11.2.2

Functions of Temporary Registers A and B .............................................................................. 88

11.2.3

Functions of the Status Flip-flop ............................................................................................... 88

11.2.4

Operations in 4-Bit Binary ......................................................................................................... 89

11.2.5

Operations in BCD ..................................................................................................................... 89

11.2.6

Operations in the ALU Block ..................................................................................................... 90

11.3 ARITHMETIC OPERATIONS (ADDITION AND SUBTRACTION IN 4-BIT BINARY AND BCD) ....... 91

11.3.1

Addition and Subtraction When CMP = 0 and BCD = 0 .......................................................... 91

11.3.2

Addition and Subtraction When CMP = 1 and BCD = 0 .......................................................... 91

11.3.3

Addition and Subtraction When CMP = 0 and BCD = 1 .......................................................... 92

11.3.4

Addition and Subtraction When CMP = 1 and BCD = 1 .......................................................... 92

11.3.5

Notes Concerning Use of Arithmetic Operations ..................................................................... 92

11.4 LOGICAL OPERATIONS ........................................................................................................................ 93

11.5 BIT JUDGEMENTS ................................................................................................................................. 94

11.5.1

TRUE (1) Bit Judgement ........................................................................................................... 94

11.5.2

FALSE (0) Bit Judgement ......................................................................................................... 95

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