Comparing GAL22V10 and GAL16V8 capabilities What capability does a GAL22V10 offer that a GAL16V8 does not, assuming classic GAL device families and configurations?

Introduction / Context:
Within GAL families, parts differ in input width, macrocell count, and the number of special-function pins (SFPs) that provide global set/reset, global output enable, or dedicated clocking. Knowing these differences helps choose the right device when you need more flexible pin functions or additional registers.

Given Data / Assumptions:

• GAL16V8: 16 inputs feeding the array and 8 macrocells/outputs.
• GAL22V10: 22 inputs feeding the array and 10 macrocells/outputs.
• Classic GALs are erasable/reprogrammable but typically not “in-system programmable” in the modern JTAG sense (unless specific LV/ISP variants are used).

Concept / Approach:

The GAL22V10 provides more macrocells and typically a greater number of special-function pins compared to the GAL16V8, enabling additional global controls and flexible pin assignments. While some later derivatives introduced ISP features, the generic comparison between baseline GAL16V8 and GAL22V10 focuses on resource counts and SFP availability rather than ISP capability.

Step-by-Step Solution:

Verification / Alternative check:

Datasheets and selection guides show expanded SFP support and macrocell counts for 22V10 over 16V8, aligning with broader pinout and function capability.

Why Other Options Are Wrong:

“Extra-large array” is vague and not a standard marketing differentiator here.

“In-system programmable” is not generally true for classic GAL vs GAL; ISP is a feature of specific sub-families, not the baseline part.

“All of the above” fails because not all claims are universally correct.

Common Pitfalls:

Assuming every GAL22V10 is ISP; many require external programmers, just like GAL16V8.

Final Answer:

It has twice the special function pins.