GAL22V10D-25LJNI

Programmable Logic Device Pld Overview

The GAL22V10D-25LJNI is a discontinued Simple Programmable Logic Device (SPLD) from Lattice Semiconductor, belonging to the GAL22V10D family. It utilizes E2CMOS technology and features ten Output Logic Macrocells (OLMCs). The device operates within a supply voltage range of +4.75 V to +5.25 V for commercial grades. Key electrical parameters include a maximum propagation delay of 25 ns, a typical operating supply current of 75 mA, and a maximum operating frequency of 38.5 MHz. It is housed in a 28-pin PLCC package.

Programmable Logic Device Pld Feature Summary

• E2CMOS Technology: Features electrically erasable floating gate technology with high-speed erase times (<100ms), 100% tested yields, and over 20 years data retention.
• Flexible OLMCs: Contains ten configurable Output Logic Macrocells supporting registered and combinatorial I/O modes with individual polarity control.
• Active Pull-ups: Built-in active pull-ups on all pins ensure floating inputs default to a TTL high logic level.
• Electronic Signature: Includes 64 bits of reprogrammable user-defined memory for identification or revision tracking.

Programmable Logic Device Pld Applications

• DMA Control
• State Machine Control
• High Speed Graphics Processing
• Standard Logic Speed Upgrade

Programmable Logic Device Pld Procurement Notes

This component has been officially discontinued by Lattice Semiconductor per Product Change Notification (PCN) #13-10. Verification of availability should focus on surplus inventory channels or authorized distributors holding remaining stock, as new manufacturing is no longer supported.

Programmable Logic Device Pld Selection Notes

Select this part only if legacy compatibility with standard 22V10 fuse maps and parametric characteristics is required. Ensure designs account for the 25 ns propagation delay limit and verify that the 28-pin PLCC footprint matches the target PCB layout constraints.

Programmable Logic Device Pld Part Context

The GAL22V10D series represents a high-performance CMOS alternative to older bipolar 22V10 devices, offering significant power reduction while maintaining functional compatibility. The 'L' suffix indicates Low Power consumption, and 'JN' denotes the Lead-Free PLCC package variant.

Programmable Logic Device Pld Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the discontinuation status. Designers should consult manufacturer recommendations for modern FPGA or CPLD replacements compatible with the GAL architecture.

Programmable Logic Device Pld FAQ

What is the function of the Electronic Signature feature?

The Electronic Signature provides 64 bits of reprogrammable memory accessible regardless of the security cell state, allowing users to store user ID codes, revision numbers, or inventory control data.

How does the device handle unused inputs?

Due to built-in active pull-ups, unused inputs float to a TTL high logic level. However, Lattice recommends connecting unused inputs and tri-stated I/O pins to an adjacent active input, Vcc, or ground to improve noise immunity and reduce power consumption.

What is the purpose of the Power-On Reset circuitry?

The internal register reset circuitry forces all Q outputs to a low state upon power-up (within 1μs max), providing a known initial state for state machines and simplifying design verification.