HT27C040 datasheet(6/9 Pages) HOLTEK

tên linh kiện	HT27C040

Giải thích chi tiết về linh kiện	COMS 512K x 8-Bit OTP EPROM

PDF	9 Pages

Scroll/Zoom	100%

nhà sản xuất	HOLTEK [Holtek Semiconductor Inc]

Trang chủ	http://www.holtek.com

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6 / 9 page

Product Identification Code

Code

Pins

Hex

Data

DQ7

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

Manufacturer

0100011100

Device Type

1100000100

Continuation

0001111111

1001111111

HT27C040

Rev. 1.00

April 30, 2001

Operation mode truth table

All the operation modes are shown in the table following.

Mode

VPP

Output

Read

VIL

XVCC

Dout

Output Disable

VIL

VIH

XVCC

High Z

Standby (TTL)

VIH

VCC

High Z

Standby (CMOS)

VCC

± 0.3V

VCC

High Z

Program

VIL

VIH

VPP

DIN

Program Verify

VIL

VPP

DOUT

Product Inhibit

VIH

VPP

High Z

Manufacturer Code (3)

VIL

VIH

VH (1)

VCC

Device Type Code (3)

VIL

VIH

VH (1)

VCC

Note:

(1) VH = 12.0V

± 0.5V

(2) X=Either VIH or VIL

(3) For Manufacturer Code and Device Code, A1=VIH, When A1=VIL, both codes will read 7F

O E

A d d r e s s

A d d r e s s V a l i d

t C E

t O E

t A C C

H I G H Z

O u t p u t V a l i d

t O H

t D .

O u t p u t

C E

Figure 1. A.C. waveforms for read operation

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