TIBPLS506AC

13

× 97 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER

SRPS003C – D3090, DECEMBER 1987 – REVISED NOVEMBER 1995

POST OFFICE BOX 655303

Copyright

1

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Combinational Operation

High-Performance State Machine

Applications

description

The TIBPLS506AC is a TTL field-programmable

state machine of the Mealy type. This state

machine (logic sequencer) contains 97 product

terms (AND terms) and 48 sum terms (OR terms).

The product and sum terms are used to control the

16-bit internal state registers and the 8-bit output

registers.

The outputs of the internal state registers

(P0 – P15) are fed back and combined with the 13

inputs (I0 – I12) to form the AND array. In addition,

two sum terms are complemented and fed back to

the AND array, which allows any product term to

be summed, complemented, and used as input to

the AND array.

The eight output cells can be individually

programmed for registered or combinational

operation. Nonregistered operation is selected by

blowing the output multiplexer fuse. Registered

output operation is selected by leaving the output

multiplexer fuse intact.

Pin 17 can be programmed to function as an input and/or an output enable. Blowing the output enable fuse lets

pin 17 function as an output enable but does not disconnect pin 17 from the input array. When the output enable

fuse is intact, pin 17 functions only as an input with the outputs being permanently enabled.

The state and output registers are synchronously clocked by the fuse programmable clock input. The clock

polarity fuse selects either postive- or negative-edge triggering. Negative-edge triggering is selected by blowing

the clock polarity fuse. Leaving this fuse intact selects positive-edge triggering. After power-up, the device must

be initialized to the desired state. When the output multiplexer fuse is left intact, registered operation is selected.

The TIBPLS506AC is characterized for operation from 0

°C to 75°C.

32 1 28 27

12 13

5

6

7

8

9

10

11

25

24

23

22

21

20

19

I8

I9

I10

NC

I11

I12/OE

Q7

I2

I3

I4

NC

I5

Q0

Q1

426

14 15 16 17 18

FK OR FN PACKAGE

(TOP VIEW)

NC – No internal connection

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

CLK

I0

I1

I2

I3

I4

I5

Q0

Q1

Q2

Q3

GND

I6

I7

I8

I9

I10

I11

I12/OE

Q7

Q6

Q5

Q4

JT OR NT PACKAGE

(TOP VIEW)