TIBPSG507AC

13

× 80 × 8 PROGRAMMABLE SEQUENCE GENERATOR

SRPS002D – D3029, MAY 1987 – REVISED NOVEMBER 1995

POST OFFICE BOX 655303

2

description (continued)

The eight outputs can be individually programmed for combinational operation by blowing the output multiplexer

fuse. 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 TIBPSG507AC is characterized for operation from 0

°C to 75°C.

6-BIT COUNTER CONTROL FUNCTION TABLE (see Note 1)

CNT/HLD1

CNT/HLD0

SCLR1

SCLR0

OPERATION

L

L

L

L

counter active

X

X

X

H

synchronous clear

X

X

H

X

synchronous clear

X

H

L

L

hold counter

H

X

L

L

hold counter

NOTE 1: When all fuses are blown on a product line (AND), its output will be high. When all fuses

are blown on a sum line (OR), its output will be low. All product and sum terms are low

on devices with fuses intact.

S/R FUNCTION TABLE (see Note 2)

CLK POLARITY FUSE

CLK

S

R

STATE REGISTER

INTACT

↑

L

L

Q0

INTACT

↑

L

H

L

INTACT

↑

H

L

H

INTACT

↑

H

H

INDET†

BLOWN

↓

L

L

Q0

BLOWN

↓

L

H

L

BLOWN

↓

H

L

H

BLOWN

↓

H

H

INDET†

† Output state is indeterminate

NOTE 2: After power up, the device must be initialized to its desired state. Q0 is the state of the

S/R register before the active clock edge.