GAL22V10 device pins (clarified) Which statement correctly summarizes the GAL22V10 pin configuration for user I/O and special pins?

Introduction / Context:
The GAL22V10 is a classic CMOS GAL (Generic Array Logic) device widely used for glue logic. Understanding its pinout is essential when replacing older PALs or migrating designs, because available inputs, I/Os, and special-purpose pins determine what logic can be packed into a single device.

Given Data / Assumptions:

• Package: 24 pins (typical DIP/PLCC/SOIC variants).
• Ten macrocells provide outputs with feedback (configurable features per macrocell).
• Dedicated inputs supply product terms into the AND array.
• Two special pins: a global clock and an output enable/control.

Concept / Approach:
Device naming “22V10” hints at available resources: up to 22 inputs (including feedback) and 10 outputs (macrocells). Practically, pinout summaries list 10 I/O macrocells, 12 dedicated input pins, and 2 special function pins (often CLK and OE). These signals flow into the internal programmable AND array and fixed OR structure, with macrocells at the outputs for optional registering and tri-state control.

Step-by-Step Solution:

Verification / Alternative check:
Typical datasheets/tabular pin lists show 10 I/O macrocells and 12 inputs, plus CLK and OE or equivalent control pins, aligning with the correct option.

Why Other Options Are Wrong:

• No special pins: Contradicts the presence of global control pins.
• 8 configurable I/O: Confuses GAL22V10 with GAL16V8.
• 22 outputs and 10 inputs: Inverts the meaning of 22V10 and contradicts the physical pin count.

Common Pitfalls:
Assuming all “22” pins are dedicated inputs (several are macrocell I/O) or overlooking feedback paths that let outputs act as inputs to logic.

Final Answer:
10 output macrocells (I/O), 12 dedicated input pins, plus 2 special-purpose pins (CLK and OE)