63S281NL

Overview

The 63S281NL is a 1Kbit Non-Volatile PROM from Advanced Micro Devices, organized as 256 x 8 bits. It features a parallel interface with a 50 ns access time. The component is housed in a 20-PLCC (9x9) package with J-Leads, designed for compact circuit integration.

Feature Summary

• Non-volatile storage capability preserving data without power
• Parallel memory interface for direct system connection
• Compact PLCC-20 package with J-Lead configuration

Applications

• Embedded firmware storage
• Microcontroller program memory
• Industrial control systems

Procurement Notes

Verify the specific suffix 'NL' against the manufacturer's official datasheet to confirm package type and environmental compliance status. Ensure the source document explicitly identifies this part number as a Parallel PROM to avoid confusion with serial variants or different pin counts within the same family.

Selection Notes

Select this component when a small capacity non-volatile memory solution is required for legacy parallel bus architectures. The 20-PLCC form factor suits applications where board space is limited but through-hole or surface-mount compatibility with standard PLCC sockets is necessary.

Part Context

This device belongs to the AMD 63S series of Programmable Read-Only Memories. It serves as a fixed-function storage element for embedded systems requiring reliable, low-capacity code retention. The parallel interface distinguishes it from newer serial EEPROMs or Flash devices.

Replacement Considerations

Check for direct pin-compatible substitutes within the AMD 63S series. Verify that any replacement maintains the 256x8 organization and parallel interface timing requirements.