CAT33C704 데이터 시트보기 (PDF) - Catalyst Semiconductor => Onsemi

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CAT33C704

4K-Bit Secure Access Serial E2PROM

Catalyst Semiconductor => Onsemi 

Preliminary

CAT33C704

WRAL is executed. For protection against inadvertent

clearing or writing of data, the ERAL instruction is

required to be entered preceding the WRAL instruction.

RSEQ Read Sequentially

1100 1011 [A15–A8] [A7–A0] (x8 organization)

1100 1011 [A7–A0] (x16 organization)

Read memory starting from specified address, sequen-

tially to the highest address or until CS goes LOW. The

instruction is terminated when CS goes LOW.

ENBSY Enable Busy

1000 0100

Enable the status indicator on DO during program/erase

cycle. DO goes LOW then HIGH once the write cycle is

complete. DO will go to HIGH-Z at the end of the next op

code transmission.

DISBSY Disable Busy

1000 0101

Disable the status indicator on DO during program/

erase cycle.

EWEN Program/Erase Enable

1000 0001

Enable program/erase to be performed on non-pro-

tected portion of memory. This instruction must be

entered before any program/erase instruction will be

carried out. Once entered, it will remain valid until power-

down or an EWDS (Program/Erase Disable) is ex-

ecuted.

EWDS Program/Erase Disable

1000 0010

Disable all write and clear functions.

ORG Select Memory Organization

1000 011R (where R = 0 or 1)

Set memory organization to 512 x 8 if R = 0.

Set memory organization to 256 x 16 if R = 1.

RSR Read Status Register

1100 1000

Output the contents of the 8-bit status register. The

contents of the first three bits of the register are 101,

which allows the user to quickly determine whether the

device is listening or is in an error condition. The next

three bits indicate parity error, instruction error and RDY/

BUSY status. The last two bits are reserved for future

use.

NOP No Operation

1000 0000

No Operation.

ORDERING INFORMATION

Prefix Device #

Suffix

CAT

33C704

J

I

-TE13

Optional

Company ID

Product

Number

Temperature Range

Blank = Commercial (0˚C to +70˚C)

I = Industrial (-40˚C to +85˚C)

A = Automotive (-40˚ to +105˚C)*

Tape & Reel

TE13: 2000/Reel

Package

P: PDIP

J: SOIC (JEDEC)

* -40˚C to +125˚C is available upon request

Notes:

(1) The device used in the above example is a 33C704JI-TE13 (SOIC, Industrial Temperature, Tape & Reel)

33C704 F17

13

Doc. No. 25046-00 2/98

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