UPD78F9026A datasheet(68/213 Pages) NEC

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UPD78F9026A Folha de dados(PDF) 68 Page - NEC

Nome de Peças	UPD78F9026A

Descrição Electrónicos	8-Bit Single-Chip Microcontrollers

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Fabricante Electrônico	NEC [NEC]

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CHAPTER 3 CPU ARCHITECTURE

User's Manual U11919EJ3V0UM00

3.4.6 Based addressing

[Function]

8-bit immediate data is added to the contents of the base register, that is, the HL register pair, and the sum is

used to address the memory. Addition is performed by expanding the offset data as a positive number to 16

bits. A carry from the 16th bit is ignored. This addressing can be carried out for all the memory spaces.

[Operand format]

Identifier

Description

−

[HL+byte]

[Example]

MOV A, [HL+10H]; When setting byte to 10H

Instruction Code

0010

1101

0001

0000

3.4.7 Stack addressing

[Function]

The stack area is indirectly addressed with the stack pointer (SP) contents.

This addressing method is automatically employed when the PUSH, POP, subroutine call, and RETURN

instructions are executed or the register is saved/restored upon generation of an interrupt request.

Stack addressing enables to access the internal high-speed RAM area only.

[Example]

In the case of PUSH DE

Instruction Code

1010

Nº de peça semelhante - UPD78F9026A

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Renesas Technology Corp	UPD78F9026A	153Kb / 17P	PG-FP5

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Descrição semelhante - UPD78F9026A

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