ATF20V8BQL-15SC

Overview

The ATF20V8BQL-15SC is a high-performance Electrically Erasable Programmable Logic Device (EEPLD) manufactured by Microchip Technology. It utilizes advanced Flash technology for reprogrammability and features eight macrocells with dedicated product terms. The device operates at a maximum pin-to-pin propagation delay of 15 ns and supports clock frequencies up to 62 MHz in no-feedback configurations. It functions within a commercial temperature range of 0°C to 70°C using a single 5V power supply, consuming a typical standby current of 5 mA and an active current of 20 mA.

Feature Summary

• Eight Macrocells: Configurable as registered outputs, combinatorial I/Os, or dedicated inputs.
• Flash Memory Architecture: Supports 100 erase/write cycles, 20-year data retention, and 2000V ESD protection.
• Low Power Consumption: The 'L' variant offers reduced standby current (5 mA typ) compared to standard versions.
• Universal Compatibility: Emulates industry-standard 24-pin PAL devices across Registered, Complex, and Simple modes.

Applications

• Replacement for obsolete 24-pin PAL logic families in industrial control systems.
• State machine implementation requiring reliable power-up reset initialization.
• Complex glue logic interfacing between CMOS and TTL compatible components.
• Prototyping digital logic designs due to reprogrammable Flash architecture.

Procurement Notes

Verify the package type corresponding to the suffix 'SC', which indicates a 24-lead Plastic Gull-wing Small Outline (SOIC) package. Confirm that the commercial temperature rating (0°C to 70°C) meets the operational requirements, as industrial variants use the 'SI' suffix. Ensure programming hardware supports the specific Flash memory interface required for this EEPLD family.

Selection Notes

Select the ATF20V8BQL-15SC when low standby power is critical, as the 'QL' suffix denotes the lowest power option in the series. Choose this part over the standard ATF20V8B-15SC if system power budgets require the 5 mA standby current specification. Verify that the 15 ns speed grade satisfies the timing constraints of the target application logic.

Part Context

This component belongs to the ATF20V8B family of high-speed EEPLDs. The 'QL' designation specifically identifies the low-power version, while '15' indicates the 15 ns speed grade. The 'SC' suffix defines the surface-mount SOIC packaging. This family allows direct replacement for many legacy 20R8 and 24-pin PAL devices through software-configurable modes.

Replacement Considerations

Direct functional replacements include other ATF20V8B variants with adjusted power or speed ratings, such as ATF20V8B-15SC (standard power) or ATF20V8BQL-15SI (industrial temperature). Cross-family emulation of devices like the GAL20V8 or 20R8 is supported via compiler mode selection.