PALCE20V8 datasheet(1/14 Pages) CYPRESS

Part #	PALCE20V8

Description	Flash Erasable, Reprogrammable CMOS PAL Device

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Manufacturer	CYPRESS [Cypress Semiconductor]

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Flash Erasable,

Reprogrammable CMOS PAL Device

PALCE20V8

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

Document #: 38-03026 Rev. **

Revised March 26, 1997

20V8

Features

• Active pull-up on data input pins

• Low power version (20V8L)

— 55 mA max. commercial (15, 25 ns)

— 65 mA max. military/industrial

(15, 25 ns)

• Standard version has low power

— 90 mA max. commercial

(15, 25 ns)

— 115 mA max. commercial (10 ns)

— 130 mA max. military/industrial (15, 25 ns)

• CMOS Flash technology for electrical erasability and

reprogrammability

• User-programmable macrocell

— Output polarity control

— Individually selectable for registered or combinato-

rial operation

• QSOP package available

— 10, 15, and 25 ns com’l version

— 15, and 25 ns military/industrial versions

• High reliability

— Proven Flash technology

— 100% programming and functional testing

Functional Description

The Cypress PALCE20V8 is a CMOS Flash Erasable sec-

ond-generation programmable array logic device. It is imple-

mented with the familiar sum-of-product (AND-OR) logic struc-

ture and the programmable macrocell.

The PALCE20V8 is executed in a 24-pin 300-mil molded DIP,

a 300-mil cerdip, a 28-lead square ceramic leadless chip car-

rier, a 28-lead square plastic leaded chip carrier, and a 24-lead

quarter size outline. The device provides up to 20 inputs and

8 outputs. The PALCE20V8 can be electrically erased and re-

programmed. The programmable macrocell enables the de-

vice to function as a superset to the familiar 24-pin PLDs such

as 20L8, 20R8, 20R6, 20R4.

PAL is a registered trademark of Advanced Micro Devices, Inc.

Logic Block Diagram (PDIP/CDIP/QSOP)

20V8–1

88

8

10

9

8

7

6

5

432

1

13

15

16

17

18

19

20

21

22

23

PROGRAMMABLE

AND ARRAY

(64 x 40)

Macrocell

I9

I8

I7

I6

I5

I4

I3

I2

I1

CLK/I0

OE/I11

I/O0

I/O1

I/O2

I/O3

I/O4

I/O5

I/O6

I/O7

I13

12

GND

11

I10

MUX

24

VCC

MUX

14

I12

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