27C256TRPDI-15 参数 Datasheet PDF下载

256K (32K x 8-Bit) OTP EPROM

F

IGURE

5. B

YTE

P

ROGRAMMING

T

IMING

W

AVEFORM

27C256T

Memory

D

EVICE

I

DENTIFIER

M

ODE

D

ESCRIPTION

The Device Identifier Mode allows binary codes to be read from the outputs that identify the manufacturer and the type

of device. Using this mode with programming equipment, the device will automatically match its own erase and pro-

gramming algorithm.

27C256T S

ERIES

I

DENTIFIER

C

ODE

I

DENTIFIER

M

ANUFACTURER

C

ODE

D

EVICE

C

ODE

1.

2.

3.

4.

A

0

V

IL

V

IH

I/O

7

0

0

I/O

6

0

0

I/O

5

0

1

I/O

4

0

1

I/O

3

0

1

I/O

2

1

0

I/O

1

1

0

I/O

0

1

0

H

EX

D

ATA

07

38

V

CC

= 5.0V + 10%.

A

9

= 12.0V + 0.5V.

A

1

-A

8

, A

10

-A

14

, CE, OE = V

IL

, PGM = V

IH

.

X = Don’t care.

06.24.03 REV 4

All data sheets are subject to change without notice

11

©2003 Maxwell Technologies

All rights reserved.