GAL22V10D-15LJN

Programmable Logic Device Pld Overview

The GAL22V10D-15LJN is a discontinued Electrically Erasable Programmable Logic Device (PLD) from Lattice Semiconductor. It utilizes E2CMOS technology and features 22 inputs, 10 outputs, and 10 macrocells within a 28-pin PLCC package. The device operates at a maximum propagation delay of 15 ns and supports a maximum clock frequency of 55.5 MHz with external feedback. Recommended operating conditions specify a supply voltage range of 4.5 V to 5.5 V and an ambient temperature range of -40°C to +85°C for industrial grade applications.

Programmable Logic Device Pld Feature Summary

• E2CMOS Technology: Offers high-speed electrical erasure in under 100ms and data retention exceeding 20 years.
• Flexible Macrocells: Features ten Output Logic Macrocells (OLMCs) supporting registered and combinatorial I/O modes.
• Active Pull-ups: Built-in active pull-ups on all pins ensure floating inputs default to a logic high state.
• Electronic Signature: Includes 64 bits of reprogrammable memory for user-defined identification or revision control.

Programmable Logic Device Pld Applications

• DMA Control
• State Machine Control
• High Speed Graphics Processing

Programmable Logic Device Pld Procurement Notes

All devices in the GAL22V10 series have been officially discontinued per Product Change Notifications PCN#09-10 and PCN#13-10. No new production is available from Lattice Semiconductor. Verification of component authenticity and physical condition is required when sourcing from secondary markets.

Programmable Logic Device Pld Selection Notes

This specific part number denotes the commercial speed grade (-15) in a lead-free PLCC package. Designers requiring equivalent functionality must evaluate alternative SPLDs, as direct replacements may differ in pinout compatibility or programming tool support due to the legacy status of the GAL architecture.

Programmable Logic Device Pld Part Context

The GAL22V10D-15LJN belongs to the GAL22V10 family, which provides parametric and fuse-map compatibility with standard bipolar and UVCMOS 22V10 devices. This lineage allows for functional upgrades while maintaining design integrity for existing logic implementations.

Programmable Logic Device Pld Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Users should consult Lattice Semiconductor for current product line recommendations compatible with their specific logic requirements.

Programmable Logic Device Pld FAQ

What is the maximum clock frequency for this device?

The maximum clock frequency is 55.5 MHz with external feedback, 80 MHz with internal feedback, and 83.3 MHz with no feedback.

How does the device handle unused inputs?

Unused inputs float to a TTL high (logic 1) due to built-in active pull-ups, though connecting them to Vcc or ground is recommended to improve noise immunity.

Does the device include power-on reset functionality?

Yes, circuitry provides a reset signal to all registers during power-up, setting Q outputs low within a maximum of 1μs.