Pin Assignment

Pin Description

Pin Name

I/O/C/P

Description

A0~A17

I

Address inputs

DQ0~DQ7

I/O

Data inputs/outputs

CE

C

Chip enable

OE

C

Output enable

PGM

C

Program strobe

NC

¾

No connection

VPP

P

Program voltage supply

Absolute Maximum Rating

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

°Cto70°C

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

-65°Cto125 °C

Applied VCC Voltage with Respect to GND...............................................................................................

-0.6V to 7.0V

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

-0.6V to 7.0V

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

Applied Voltage on A9 Pin with Respect to GND .....................................................................................

-0.6V to 13.5V

Applied VPP Voltage with Respect to GND ..............................................................................................

-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.

HT27LC020

Rev. 1.50

2

December 8, 2003

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

1

2

3

4

5

6

7

8

9

1 0

1 1

1 2

1 3

1 4

1 5

1 6

H T 2 7 L C 0 2 0

3 2 D I P - A / S O P - A

V C C

P G M

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

G N D

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 2 0

3 2 P L C C - A

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

P G M

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 2 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