TC581282A 查看數據表（PDF） - Toshiba

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TC581282A

TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS

Toshiba 

TC581282AXB

Read Mode (3)

Read mode (3) has the same timing as Read modes (1) and (2) but is used to access information in the extra

16-byte redundancy area of the page. The start pointer is therefore set to a value between byte 512 and byte 527.

CLE

CE

WE

ALE

RE

RY/BY

I/O

Busy

50H

A0~A3

512

527

Figure 5. Read mode (3) operation

Addresses bits A0~A3 are used to set the start pointer for the

redundant memory cells, while A4~A7 are ignored.

Once a 50H command has been issued, the pointer moves to

the redundant cell locations and only those 16 cells can be

addressed, regardless of the value of the A4-to-A7 address. (An

00H command is necessary to move the pointer back to the

0-to-511 main memory cell location.)

2001-12-04 17/31

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