Philips Semiconductors Programmable Logic Devices

Product specification

PLS159A

Programmable logic sequencer

(16

× 45 × 12)

October 22, 1993

33

LOGIC PROGRAMMING

The PLS159A is fully supported by industry

standard (JEDEC compatible) PLD CAD

tools, including Philips Semiconductors’

SNAP, Data I/O Corporation’s ABEL

™ and

Logical Devices Inc.’s CUPL

™ design

software packages.

All packages allow Boolean and state

equation entry formats. SNAP, ABEL and

CUPL also accept, as input, schematic

capture format.

PLS159A logic designs can also be

generated using the program table entry

format detailed on the following pages. This

program table entry format is supported by

the Philips Semiconductors SNAP PLD

design software package.

To implement the desired logic functions, the

state of each logic variable from logic

equations (I, B, O, P, etc.) is assigned a

symbol. The symbols for TRUE,

COMPLEMENT, INACTIVE, PRESET, etc.,

are defined below.

PROGRAMMING AND

SOFTWARE SUPPORT

Refer to Section 9

(Development Software)

and Section 10

(Third-party Programmer/

Software Support) of this data handbook for

additional information.

“AND” ARRAY – (I), (B), (Qp)

STATE

DON’T CARE

CODE

STATE

I, B, Q

CODE

L

STATE

I, B, Q

CODE

STATE

INACTIVE1, 2

CODE

O

–

H

(T, FC, L, P, R, D)n

I, B, Q

I, B, Q

I, B, Q

(T, FC, L, P, R, D)n

I, B, Q

I, B, Q

I, B, Q

(T, FC, L, P, R, D)n

I, B, Q

I, B, Q

I, B, Q

(T, FC, L, P, R, D)n

I, B, Q

I, B, Q

I, B, Q

“COMPLEMENT” ARRAY – (C)

ACTION

TRANSPARENT

CODE

ACTION

PROPAGATE

CODE

•

ACTION

GENERATE5

CODE

ACTION

INACTIVE1, 3, 5

CODE

O

–

A

C

C

(Tn, FC)

C

C

(Tn, FC)

C

C

(Tn, FC)

C

C

(Tn, FC)

“OR” ARRAY – (F-F CONTROL MODE)

Q

J

K

•

Q

J

K

FC

ACTION

J–K OR D

(CONTROLLED)1

CODE

A

FC

M

M

ACTION

J–K ONLY

CODE

Q

J

K

•

Q

J

K

Tn

Tn STATUS

ACTIVE (Set)1

CODE

A

Tn

M = ENABLED

INACTIVE (Reset)

CODE

M = ENABLED

Tn STATUS

ENABLED

DISABLED

CAUTION:

THE PLS159A Programming Algorithm is different from the PLS159.

Notes on following page.