DS2407 Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS2407

Dual Addressable Switch Plus 1K–Bit Memory

Dallas Semiconductor -> Maxim Integrated 

DS2407

DS2407 MEMORY MAP Figure 4

STARTING

ADDRESS

0000H

1K BIT

EPROM

0020H

0040H

0060H

8–BIT

SCRATCHPAD

32–BYTE FINAL STORAGE EPROM

32–BYTE FINAL STORAGE EPROM

32–BYTE FINAL STORAGE EPROM

32–BYTE FINAL STORAGE EPROM

PAGE 0

PAGE 1

PAGE 2

PAGE 3

VALID DEVICE

POWER–ON

SETTINGS (SRAM) DEFAULT SETTINGS

FACTORY REDIRECITON

BYTE

BYTES

BIT MAP OF

USED PAGES

WRITE–PROTECT BITS

DATA MEMORY

8 BYTES

STATUS

MEMORY

DS2407 STATUS MEMORY MAP Figure 5

ADDRESS BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

0 (EPROM) BM 3

BM 2

BM 1

BM 0

WP 3

1 (EPROM)

1

1

1

1

1

2 (EPROM)

1

1

1

1

1

3 (EPROM)

1

1

1

1

1

4 (EPROM)

1

1

1

1

1

5 (EPROM)

EPROM factory byte

6 (EPROM

X

Pwr–On

Status

PIO–B

Pwr–On

Status

PIO–A

Pwr–On

Status

CSS4

Pwr–On

Status

CSS3

7 (SRAM)

Supply

Indication

(read

only)

PIO–B

Channel

Flip–Flop

PIO–A

Channel

Flip–Flop

CSS4

Channel

Select

CSS3

Channel

Select

BIT 2

WP 2

1

1

1

1

Pwr–On

Status

CSS2

CSS2

Source

Select

BIT 1

WP 1

Redir. 0

Redir. 1

Redir. 2

Redir. 3

Pwr–On

Status

CSS1

CSS1

Source

Select

BIT 0

WP 0

Redir. 0

Redir. 1

Redir. 2

Redir. 3

Pwr–On

Status

CSS0

CSS0

Polarity

012099 6/31

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