UPD17708 datasheet(60/358 Pages) RENESAS

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UPD17708 Datasheet(PDF) 60 Page - Renesas Technology Corp

Part #	UPD17708

Description	MOS INTEGRATED CIRCUIT

PDF	358 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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60 / 358 page

µPD17704, 17705, 17707, 17708, 17709

7. ALU (Arithmetic Logic Unit) BLOCK

7.1 Outline of ALU Block

Figure 7-1 outlines the ALU block.

As shown in the figure, the ALU block consists of an ALU, temporary registers A and B, program status word,

decimal adjustment circuit, and memory address control circuit.

The ALU operates on, judges, compares, rotates, and transfers 4-bit data in the data memory.

Figure 7-1. Outline of ALU Block

Data bus

Address

control

Data memory

Index modification

memory pointer

Temporary

Program status word

Carry/borrow/zero

detection/decimal/storage

specification

ALU

• Arithmetic operation

• Logical operation

• Bit judgment

• Comparison

• Rotation

• Transfer

Decimal adjustment

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