TIBPAL22VP10-20C, TIBPAL22VP10-25M

HIGH-PERFORMANCE

IMPACT-X

™ PROGRAMMABLE ARRAY LOGIC CIRCUITS

SRPS013 – D2943, FEBRUARY 1987 – REVISED JUNE 1991

POST OFFICE BOX 655303

2

description (continued)

Circuit design is enhanced by the addition of a synchronous set and an asynchronous reset product term. These

functions are common to all registers. When the synchronous set product term is a logic 1, the output registers

are loaded with a logic 1 on the next low-to-high clock transition. When the asynchronous reset product term

is a logic 1, the output registers are loaded with a logic 0. The output logic level after set or reset depends on

the polarity selected during programming. Output registers can be preloaded to any desired state during testing.

Preloading permits full logical verification during product testing.

With features such as programmable output logic macrocells and variable product term distribution, the

TIBPAL22VP10’ offers quick design and development of custom LSI functions with complexities of 500 to 800

equivalent gates. Since each of the ten output pins may be individually configured as inputs on either a

temporary or permanent basis, functions requiring up to 21 inputs and a single output or down to 12 inputs and

10 outputs are possible.

A power-up clear function is supplied that forces all registered outputs to a predetermined state after power is

applied to the device. Registered outputs selected as active-low power-up with their outputs high. Registered

outputs selected as active-high power-up with their outputs low.

A single security fuse is provided on each device to discourage unauthorized copying of fuse patterns. Once

blown, the verification circuitry is disabled and all other fuses will appear to be open.

The TIBPAL22V10-20C is characterized for operation from 0

°C to 75°C. The TIBPAL22V10-25M is

characterized for operation over the full military temperature range of –55

°C to 125°C.