PALCE20V8H-25PC/4 Lattice Semiconductor, PALCE20V8H-25PC/4 Datasheet

PALCE20V8H-25PC/4

Manufacturer Part Number

PALCE20V8H-25PC/4

Description

EE CMOS 24-Pin Universal Programmable Array Logic

Manufacturer

Lattice Semiconductor

Datasheet

1.PALCE20V8H-25PC4.pdf (27 pages)

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DISTINCTIVE CHARACTERISTICS

GENERAL DESCRIPTION

The PALCE20V8 is an advanced PAL device built with low-power, high-speed, electrically-

erasable CMOS technology. Its macrocells provide a universal device architecture. The

PALCE20V8 is fully compatible with the GAL20V8 and can directly replace PAL20R8 series

devices and most 24-pin combinatorial PAL devices.

Device logic is automatically conﬁgured according to the user’s design speciﬁcation. A design is

implemented using any of a number of popular design software packages, allowing automatic

creation of a programming ﬁle based on Boolean or state equations. Design software also veriﬁes

the design and can provide test vectors for the ﬁnished device. Programming can be

accomplished on standard PAL device programmers.

The PALCE20V8 utilizes the familiar sum-of-products (AND/OR) architecture that allows users to

implement complex logic functions easily and efﬁciently. Multiple levels of combinatorial logic

can always be reduced to sum-of-products form, taking advantage of the very wide input gates

available in PAL devices. The equations are programmed into the device through ﬂoating-gate

cells in the AND logic array that can be erased electrically.

Publication# 16491

Amendment/0

Pin and function compatible with all PAL

Electrically erasable CMOS technology provides reconﬁgurable logic and full testability

High-speed CMOS technology

— 5-ns propagation delay for “-5” version

— 7.5-ns propagation delay for “-7” version

Direct plug-in replacement for a wide range of 24-pin PAL devices

Programmable enable/disable control

Outputs individually programmable as registered or combinatorial

Peripheral Component Interconnect (PCI) compliant

Preloadable output registers for testability

Automatic register reset on power-up

Cost-effective 24-pin plastic SKINNY DIP and 28-pin PLCC packages

Extensive third-party software and programmer support

Fully tested for 100% programming and functional yields and high reliability

Programmable output polarity

5-ns version utilizes a split leadframe for improved performance

Rev: E

Issue Date: November 1998

PALCE20V8 Family

EE CMOS 24-Pin Universal

Programmable Array Logic

COM'L: H-5/7/10/15/25, Q-10/15/25

20V8 devices

IND: H-15/25, Q-20/25

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