Pin Assignment

Pin Description

Pin No.

Pin Name

Description

1CS

Chip select

2

SO

Serial Output

3

VPP

Program voltage supply

4

GND

Negative power supply, ground

5

SI

Serial input

6

SCK

Serial clock

7

HOLD

Suspends serial input

8

VCC

Positive power supply

Absolute Maximum Rating

Operation Temperature Commercial ..........................................................................................................0

°Cto+70°C

Storage Temperature.............................................................................................................................

-65°Cto125 °C

Applied VCC Voltage with Respect to VSS ................................................................................................

-0.6V to 7.0V

Applied Voltage on Input Pin with Respect to VSS .....................................................................................

-0.6V to 7.0V

Applied Voltage on Output Pin with Respect to VSS .........................................................................

Applied VPP Voltage with Respect to VSS...............................................................................................

-0.6V to 13.5V

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those

listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-

ity.

D.C. Characteristics

Ta=0

°Cto+70°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Read Operation

Supply Voltage

¾¾

2.7

¾

3.6

V

Input Low Voltage

¾¾-0.5

¾

V

Input High Voltage

¾¾

¾

V

Output Low Voltage

2.7V~

3.6V

2.7V

¾¾

0.2

V

Output High Voltage

2.7V~

3.6V

¾¾

V

HT25LC512

Rev. 1.10

2

October 17, 2005

1

2

3

4

8

7

6

5

C S

S O

V P P

G N D

V C C

H O L D

S C K

S I

H T 2 5 L C 5 1 2

8 S O P - A