Rainbow-electronics AT89C5122 Bedienungsanleitung PDF herunterladen (Seite 31)

31

AT8xC5122/23

4202E–SCR–06/06

Figure 14. AT8xC5122’s ROM Version

PROGRAM MEMORY

(Read only)

0000

7FFF

FFFF

EA=1

INTERNAL

32K ROM

EA=0

EXTERNAL

EXTERNAL

RESET@

<0000>

SFR

Space

80

FF

On-chip

512 bytes

XRAM

0000

01FF

FFFF

RD WR

00

7F

80

FF

Upper

128 Bytes

RAM

Lower

128 Bytes

RAM

DATA MEMORY

(Read / Write)

0000

EXTRAM=0

EXTRAM=1

EXTERNAL

EXTERNAL

XRAM

XRAM

01FF

0200

8000

Roll-Over

PSEN

On-Chip 256 bytes RAM

Direct

Addressing

Indirect

Addressing

512 Bytes

INTERNAL

E2PROM

01FF

0000

Optional

Roll-Over

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 212 213

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