GAL22V10D-10QJN

Programmable Logic Device Pld Overview

The GAL22V10D-10QJN is a discontinued Simple Programmable Logic Device (SPLD) from Lattice Semiconductor, utilizing E2CMOS technology. It features 10 Output Logic Macrocells (OLMCs), 22 I/O pins, and a maximum propagation delay of 10 ns. The device operates at 5 V with a typical supply current of 90 mA. It supports reconfigurable logic with high-speed electrical erasure and includes an electronic signature for identification.

Programmable Logic Device Pld Feature Summary

• E2CMOS Technology: Electrically Erasable floating gate process enabling rapid reprogramming (<100ms erase time) and 20-year data retention.
• High Performance: Maximum propagation delay of 10 ns and Fmax up to 166 MHz with internal feedback.
• Flexible Architecture: 10 OLMCs with variable product terms (8 to 16 per macrocell) supporting registered and combinatorial modes.
• Active Pull-ups: Built-in active pull-ups on all pins ensure floating inputs default to a TTL high state.

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 is officially discontinued as per Product Change Notification (PCN) #13-10. No new production units are available from Lattice Semiconductor. Verification of authenticity is critical when sourcing from secondary markets, as the device may be obsolete or counterfeit. Check specific PCN documentation for historical inventory availability through authorized distributors like Rochester Electronics.

Programmable Logic Device Pld Selection Notes

Select this part only if legacy compatibility with standard bipolar/UVCMOS 22V10 devices is required. The 'Q' suffix indicates PLCC-28 packaging, and 'N' denotes lead-free construction. Ensure design tools support the GAL22V10 JEDEC fuse map (5892 fuses total including electronic signature). Consider modern CPLD replacements if new manufacturing is planned due to discontinuation status.

Programmable Logic Device Pld Part Context

The GAL22V10 series represents Lattice's high-performance Generic Array Logic (GAL) devices. The GAL22V10D-10QJN specifically belongs to the commercial grade subset with 10 ns speed rating. It is part of the broader GAL22V10 family, which includes variants with different speeds (-4, -7, -15, -25) and packages (DIP, SOIC, PLCC). The device was designed to offer lower power consumption compared to bipolar equivalents while maintaining full functional compatibility.

Programmable Logic Device Pld Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Discontinued devices typically require evaluation of modern CPLD families from Lattice (e.g., MachXO, CrossLink) or other vendors for pin-compatible or functionally equivalent alternatives.

Programmable Logic Device Pld FAQ

What is the purpose of the electronic signature in the GAL22V10?

The electronic signature provides 64 bits of reprogrammable memory for user-defined data such as ID codes, revision numbers, or inventory control. It remains accessible regardless of the security cell state.

How does the GAL22V10 handle unused inputs?

All pins have built-in active pull-ups that float unused inputs to a TTL high (logic 1). However, Lattice recommends connecting unused inputs to Vcc, ground, or an adjacent active input to improve noise immunity and reduce supply current.

What is the maximum clock frequency for the GAL22V10D-10?

The maximum clock frequency (Fmax) is 125 MHz with no feedback, 83.3 MHz with internal feedback, and 55.5 MHz with external feedback.