IS23SC4442 データシートの表示（PDF） - Integrated Silicon Solution

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IS23SC4442

256 BYTE EEPROM WITH WRITE PROTECT FUNCTION AND PROGRAMMABLE SECURITY

Integrated Silicon Solution 

IS23SC4442

ISSI ®

Processing Mode

During processing, the chip processes internally. The

following Figure shows the timing diagram. The IFD

sends clock to the chip continuously until the I/O us set

to the high level that has been set to low level on the first

falling edge of CLK. During this mode any start and stop

condition is ignored.

RST is low level

CLK

I/O

Command

0

1

24

..

DI0 .. DI23

Start from IFD

IFD sets I/O

to level L

Outgoing Data

IC sets I/O

To level Z

0

1

2

n

..

Stop

From IFD

DO0 ..

Don-1

Start of

Outgoing Data

DOn

IC sets I/O

To level Z

CLK 0

Processing

1

I/O

DI: Data In

DO: Data Out

Start of

Processing

End of

Processing

Figure : Sector Trailer (Block 3)

Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774

7

Rev. 00B

08/01/03

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