ISPGAL22LV10-15LKI

Programmable Logic Device Pld Overview

The ISPGAL22LV10-15LKI is a high-performance, Electrically Erasable Programmable Logic Device (EEPROM-based PLD) manufactured by Lattice Semiconductor. It features a PAL-type architecture with 22 inputs and 10 outputs, organized into 10 Macrocells. The device supports in-system programmability via the ispPAC interface but does not include IEEE 1149.1 boundary scan registers, classifying it as 1149.1 compatible rather than compliant. Operating at a maximum clock frequency of 50 MHz with a propagation delay of 15 ns, it utilizes CMOS technology and is available in a 24-pin Ceramic Dual In-line Package (CDIP).

Programmable Logic Device Pld Feature Summary

• EEPROM-based non-volatile memory allowing for unlimited reprogramming cycles.
• In-system programmability support through the ispPAC interface.
• High-speed performance with 15 ns propagation delay and 50 MHz max clock frequency.
• 22 Input / 10 Output configuration with 132 product terms.

Programmable Logic Device Pld Applications

• Logic replacement for discrete TTL/CMOS logic gates.
• Address decoding and chip select generation in embedded systems.
• State machine implementation for industrial control interfaces.
• Protocol conversion between legacy serial and parallel buses.

Programmable Logic Device Pld Procurement Notes

Verify that the specific application environment does not require IEEE 1149.1 boundary scan compliance, as this device lacks the necessary TAP controller registers. Confirm package compatibility for the 24-pin CDIP footprint if replacing older GAL variants. Ensure programming equipment supports the specific ispPAC protocol required for EEPROM-based Lattice devices.

Programmable Logic Device Pld Selection Notes

Select this component when non-volatile storage is required without the complexity of flash-based CPLDs. The 15LKI suffix indicates a 15 ns speed grade and ceramic DIP packaging. Compare against the GAL22V10-15LD if lead-free or RoHS-compliant plastic packages are preferred, noting that the electrical characteristics remain consistent across package types within the same speed grade.

Programmable Logic Device Pld Part Context

This part belongs to the GAL22V10 family, which serves as a direct upgrade to traditional mask-programmed PALs like the GAL22V10D. Unlike the ispLSI or ispMACH families, the GAL series focuses on simple, low-cost logic replacement with in-system programmability. It bridges the gap between fixed-function logic and complex FPGA solutions, offering immediate reprogrammability via EEPROM technology.

Programmable Logic Device Pld Replacement Considerations

The GAL22V10-15LD is a verified equivalent offering identical logical functionality and timing specifications. Substitution requires verifying that the target PCB accommodates the specific pinout and mechanical dimensions of the chosen package variant.