ATF20V8BQL-15PC

Overview

The ATF20V8BQL-15PC is a high-performance electrically-erasable programmable logic device (PLD) utilizing Flash memory technology. It features eight macrocells with eight product terms each, supporting registered, complex, and simple modes of operation to emulate various 24-pin PALs. The component operates at a maximum pin-to-pin propagation delay of 15 ns and an external feedback frequency up to 45 MHz. It includes internal pull-up resistors, power-saving options, and a standby current of 5 mA. The device is housed in a 24-lead PDIP package and supports industrial temperature ranges.

Feature Summary

• Flash-based reprogrammable architecture with 100% testing and 20-year data retention
• Three operational modes: Registered, Complex, and Simple for PAL emulation
• Low-power consumption with 5 mA standby current and 20 mA active current
• Integrated input and I/O pull-up resistors for known logic states

Applications

• Direct replacement for 20R8 family and most 24-pin combinatorial PLDs
• State machine initialization requiring power-up reset functionality
• Logic functions requiring specific output enable control or clocked registers

Procurement Notes

Verify the ordering suffix 'PC' corresponds to the 24-lead Plastic Dual Inline Package (PDIP) as defined in the manufacturer's documentation. Confirm that the commercial temperature range (0°C to 70°C) aligns with system requirements, noting that industrial variants use different suffixes. Ensure programming hardware supports the specific Flash memory interface for this device generation.

Selection Notes

Select this variant when low standby power is critical, indicated by the 'QL' suffix denoting 5 mA standby current compared to higher consumption versions. Choose the 15 ns speed grade if timing constraints allow for slower switching than the 7.5 ns or 10 ns options. Ensure the application utilizes the 24-pin footprint compatible with the PDIP package type specified for this part number.

Part Context

This device belongs to the ATF20V8B family of high-speed Electrically-Erasable Programmable Logic Devices. The family shares a universal architecture capable of emulating industry-standard PAL devices. Variants within the family differ primarily in power consumption levels (standard, Q, QL) and speed grades (-7, -10, -15, -25), while maintaining consistent pinouts and functional capabilities across packages.

Replacement Considerations

The ATF20V8BQL-15PC can directly replace 20R8, 20RP8, 20R6, 20RP6, 20R4, and 20RP4 devices when configured in Registered Mode. It also serves as a substitute for 20L8, 20H8, and 20P8 in Complex Mode, and various 14/16/18/20-pin simple PALs in Simple Mode, provided the compiler settings match the target device emulation.