TC58NS256DC View Datasheet(PDF) - Toshiba

Part Name

Description

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TC58NS256DC

TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS

Toshiba 

TC58NS256DC

ID Read

The TC58NS256 contains ID codes which identify the device type and the manufacturer. The ID codes can be

read out under the following timing conditions:

CLE

tCR

CE

WE

ALE

tAR1

RE

tREAID

I/O

90H

00

98H

75H

ID Read command

Address

00

Maker code

Device code

For the specifications of the access times tREAID, tCR and tAR1 refer to the AC Characteristics.

Figure13. ID Read timing

A5H

Option code

Table 6. Code table

I/O8

I/O7

I/O6

I/O5

I/O4

I/O3

I/O2

I/O1

Maker code

1

0

0

1

1

0

0

0

Device code

0

1

1

1

0

1

0

1

Option code

1

0

1

0

0

1

0

1

* The A5H for the 3rd byte of ID read means the existence of 128 bit unique ID number in the device.

Hex Data

98H

75H

A5H*

How to read out unique ID number

The 128 bit unique ID number is embedded in the device. The procedure to read out the ID number is available

using special command which is provided under a non-disclosure agreement.

2000-08-27 24/33

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