7471 datasheet(10/47 Pages) RENESAS

No. de pieza	7471

Descripción Electrónicos	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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Fabricante Electrónico	RENESAS [Renesas Technology Corp]

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9

7470/7471 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

MEMORY

• Special Function Register (SFR) Area

The special function register (SFR) area contains the registers

relating to functions such as I/O ports and timers.

• RAM

RAM is used for data storage as well as a stack area.

• ROM

ROM is used for storing user programs as well as the interrupt

vector area.

• Interrupt Vector Area

The interrupt vector area is for storing jump destination ad-

dresses used at reset or when an interrupt is generated.

• Zero Page

Zero page addressing mode is useful because it enables access

to this area with fewer instruction cycles.

• Special Page

Special page addressing mode is useful because it enables ac-

cess to this area with fewer instruction cycles.

Fig. 2 Memory map

RAM (192 bytes)

for

M37470M8/E8

M37471M8/E8

SFR area

Not used

Interrupt vector area

000016

Zero page

Special page

RAM (128 bytes)

for

M37470M2

M37471M2

ROM

(16K bytes)

for

M37470M8/E8

M37471M8/E8

ROM

(8K bytes)

for

M37470M4/E8

M37471M4/E8

ROM

(4K bytes)

for

M37470M2

M37471M2

RAM (192 bytes)

for

M37470M4/E4

M37470M8/E8

M37471M4/E4

M37471M8/E8

Not used

007F16

00BF16

00FF16

010016

01BF16

C00016

E00016

F00016

FF0016

FFEA16

FFFF16

Número de pieza similar - 7471

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