PALCE16V8Q-15PI5 datasheet(4/26 Pages) AMD

Part #	PALCE16V8Q-15PI5

Description	EE CMOS 20-Pin Universal Programmable Array Logic

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Manufacturer	AMD [Advanced Micro Devices]

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PALCE16V8 Family

FUNCTIONAL DESCRIPTION

The PALCE16V8 is a universal PAL device. It has eight

independently configurable macrocells (MC0

–MC7).

Each macrocell can be configured as registered output,

combinatorial output, combinatorial I/O or dedicated in-

put. The programming matrix implements a program-

mable AND logic array, which drives a fixed OR logic

array. Buffers for device inputs have complementary

outputs to provide user-programmable input signal po-

larity. Pins 1 and 11 serve either as array inputs or as

clock (CLK) and output enable (

OE), respectively, for all

flip-flops.

Unused input pins should be tied directly to VCC or GND.

Product terms with all bits unprogrammed (discon-

nected) assume the logical HIGH state and product

terms with both true and complement of any input signal

connected assume a logical LOW state.

The programmable functions on the PALCE16V8 are

automatically configured from the user’s design

specification. The design specification is processed by

development software to verify the design and create a

programming file (JEDEC). This file, once downloaded

to a programmer, configures the device according to the

user’s desired function.

The user is given two design options with the

PALCE16V8. First, it can be programmed as a standard

PAL device from the PAL16R8 and PAL10H8 series.

The PAL programmer manufacturer will supply device

codes for the standard PAL device architectures to be

used with the PALCE16V8. The programmer will pro-

gram the PALCE16V8 in the corresponding architec-

ture. This allows the user to use existing standard PAL

device JEDEC files without making any changes to

them. Alternatively, the device can be programmed as

a PALCE16V8. Here the user must use the PALCE16V8

device code. This option allows full utilization of the

macrocell.

16493D-4

*In macrocells MC0 and MC7

, SG1 is replaced by SG0 on the feedback multiplexer.

1 1

0 X

1 0

SG1

SL0 X

DQ

Q

1 0

1 1

0 X

1 1

1 0

0 0

0 1

VCC

CLK

SL0X

OE

To

Adjacent

Macrocell

From

Adjacent

1 1

0 X

1 0

*

SL1X

I/OX

PALCE16V8 Macrocell

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PALCE16V8Q-15PI5 Datasheet(PDF) 4 Page - Advanced Micro Devices

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