Pin Assignment

Pin Description

Pin Name

I/O/P

Description

VPP

P

Program voltage supply

A0~A18

I

Address inputs

DQ0~DQ7

I/O

Data inputs/outputs

VSS

¾

Negative power supply, ground

CE

I

Chip enable

OE

I

Output enable

VCC

¾

Positive power supply

Absolute Maximum Rating

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

°Cto70°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 Voltage on A9 Pin with Respect to VSS ......................................................................................

-0.6V to 13.5V

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

-0.6V to 13.5V

Applied READ Voltage (Functionality is guaranteed between these limits) ................................................+3.0V to 3.6V

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.

HT27LC040

Rev. 1.30

2

December 8, 2003

V C C

A 1 8

A 1 7

A 1 4

A 1 3

A 8

A 9

A 1 1

O E

A 1 0

C E

D Q 7

D Q 6

D Q 5

D Q 4

D Q 3

V P P

A 1 6

A 1 5

A 1 2

A 7

A 6

A 5

A 4

A 3

A 2

A 1

A 0

D Q 0

D Q 1

D Q 2

V S S

1

2

3

4

5

6

7

8

9

1 0

1 1

1 2

1 3

1 4

1 5

1 6

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

2 0

1 9

1 8

1 7

H T 2 7 L C 0 4 0

3 2 D I P / S O P

5

6

7

8

9

1 0

1 1

1 2

1 3

2 9

2 7

2 6

2 5

2 4

2 3

2 2

2 1

2 8

H T 2 7 L C 0 4 0

3 2 P L C C

A 7

A 6

A 5

A 4

A 3

A 2

A 1

A 0

D Q 0

A 1 4

A 8

A 9

A 1 1

A 1 0

D Q 7

A 1 3

C E

O E

1

2

3

4

5

6

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

2 4

2 3

2 2

2 1

2 0

1 9

1 8

1 7

A 1 1

A 9

A 8

A 1 3

A 1 4

A 1 7

A 1 8

V C C

V P P

A 1 6

A 1 5

A 1 2

A 7

A 6

A 5

A 4

O E

A 1 0

C E

D Q 7

D Q 6

D Q 5

D Q 4

D Q 3

G N D

D Q 2

D Q 1

D Q 0

A 0

A 1

A 2

A 3

H T 2 7 L C 0 4 0

3 2 T S O P - A

7

8

9

1 0

1 1

1 2

1 3

1 4

1 5

1 6