ATF22V10CQZ-20PU

Overview

The ATF22V10CQZ-20PU is an electrically erasable programmable logic device (EEPLD) manufactured by Microchip Technology. It features a high-performance CMOS architecture with 12 inputs and 10 I/O macrocells, each supporting 8 to 16 product terms. The component operates at a maximum propagation delay of 20 ns and supports a maximum frequency of 50 MHz. It functions within a 4.5 V to 5.5 V supply range and includes Input Transition Detection for zero standby power dissipation. The device utilizes Flash memory technology, allowing for reprogrammability and data retention.

Feature Summary

• Zero Standby Power: Utilizes Input Transition Detection (ITD) circuitry to automatically power down when idle, achieving 100 µA worst-case standby current.
• Reprogrammable Flash Memory: Supports 100 erase/write cycles and retains data for 20 years without power.
• High Reliability: Features 2,000V ESD protection and 200mA latchup immunity.
• Universal Architecture: Emulates standard 22V10 family devices and most 24-pin combinatorial PLDs.

Applications

• Replacement for legacy PAL and GAL devices in industrial control systems.
• State machine implementation requiring power-down capabilities.
• Logic interface bridging between different voltage domains or protocols.
• Complex combinational and registered logic functions in embedded designs.

Procurement Notes

Verify the package type matches the specific application requirements, as this part number denotes a Plastic Dual Inline Package (PDIP). Confirm that the programming equipment supports the Electrically Erasable Flash architecture. Ensure compliance with RoHS standards if required, as indicated by the 'U' suffix in the ordering code. Check for any export restrictions related to the device's ECCN classification before procurement.

Selection Notes

Select the ATF22V10CQZ-20PU when a 20 ns maximum delay is sufficient for the design timing constraints. Choose this variant over faster grades if lower dynamic power consumption is prioritized, as higher speed variants typically exhibit higher active supply currents. Ensure the design accommodates the Industrial temperature range (-40°C to +85°C) specified for this package option. Verify that the 10 I/O macrocells provide adequate product terms for the target logic complexity.

Part Context

This component belongs to the ATF22V10CQZ series, which serves as a successor to the obsolete ATF22V10CZ line. The 'CQZ' designation indicates a combination of low high-frequency ICC characteristics from the 'Q' design with the zero-power features of the 'Z' design. It is part of Microchip's broader portfolio of high-density, electrically erasable programmable logic devices designed for cost-effective system integration.

Replacement Considerations

Direct replacement for ATF22V10CZ-20PI and similar legacy parts. Verify pinout compatibility with existing 24-pin DIP footprints. Ensure programming software supports the CQZ architecture for fuse pattern verification.

FAQ

How does the device achieve zero standby power?

The ATF22V10CQZ-20PU uses patented Input Transition Detection (ITD) circuitry. When inputs are idle, the device automatically powers down to a zero-power mode, limiting standby current to 100 µA maximum.

What is the maximum operating frequency for this speed grade?

For the -20 speed grade, the maximum operating frequency is 50.0 MHz, calculated based on the setup time and clock-to-output delay specifications.

Can this device replace standard PAL devices?

Yes, the universal architecture allows it to emulate most 24-pin PAL devices, including those from the 22V10 family, facilitating direct upgrades in existing designs.