3819 datasheet(23/218 Pages) RENESAS

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3819 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

192

256

384

512

640

768

896

1024

1536

2048

00FF16

013F16

01BF16

023F16

02BF16

033F16

03BF16

043F16

063F16

083F16

4096

8192

12288

16384

20480

24576

28672

32768

36864

40960

45056

49152

53248

57344

61440

F00016

E00016

D00016

C00016

B00016

A00016

900016

800016

700016

600016

500016

400016

300016

200016

100016

F08016

E08016

D08016

C08016

B08016

A08016

908016

808016

708016

608016

508016

408016

308016

208016

108016

010016

000016

004016

044016

FF0016

FFDC16

FFFE16

FFFF16

XXXX16

YYYY16

ZZZZ16

RAM

ROM

SFR area

Zero

page

Special

page

RAM area

RAM capacity

(bytes)

Address XXXX16

ROM capacity

(bytes)

Address YYYY16

Reserved area

0F0016

0F1F16

Not used

RAM area for serial I/O automatic transfer

Not used

0F8016

RAM area for FLD automatic display

0FDF16

Not used

Reserved ROM area

(common ROM area,128 bytes)

Interrupt vector area

Reserved ROM area

ROM area

Address ZZZZ16

Memory

Special function register (SFR) area

The special function register (SFR) area in the zero page contains

control registers such as I/O ports and timers.

RAM

RAM is used for data storage and for stack area of subroutine

calls and interrupts.

ROM

The first 128 bytes and the last 2 bytes of ROM are reserved for

device testing and the reset is user area for storing programs.

Interrupt vector area

The interrupt vector area contains reset and interrupt vectors.

Zero page

The 256 bytes from addresses 000016 to 00FF16 are called the

zero page area. The internal RAM and the special function regis-

ters (SFR) are allocated to this area.

The zero page addressing mode can be used to specify memory

and register addresses in the zero page area. Access to this area

with only 2 bytes is possible in the zero page addressing mode.

Special page

The 256 bytes from addresses FF0016 to FFFF16 are called the

special page area. The special page addressing mode can be

used to specify memory addresses in the special page area. Ac-

cess to this area with only 2 bytes is possible in the special page

addressing mode.

Fig. 2 Memory map

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