ATF22V10CQZ-20XI

Programmable Logic Device Pld Overview

The ATF22V10CQZ-20XI is an industrial-grade, high-performance CMOS electrically erasable programmable logic device (EEPLD) manufactured by Microchip Technology. It features a maximum pin-to-pin propagation delay of 20 ns and operates within a temperature range of -40°C to +85°C. The device utilizes advanced Flash memory technology, providing 10 I/O macrocells with 8 to 16 product terms each. It supports zero standby power dissipation through Input Transition Detection (ITD), consuming a maximum of 100 µA in standby mode. The component is housed in a 24-lead Plastic Thin Shrink Small Outline Package (TSSOP).

Programmable Logic Device Pld Feature Summary

• Zero Standby Power: Utilizes patented Input Transition Detection (ITD) circuitry to automatically power down when idle, limiting standby current to 100 µA maximum.
• Industrial Temperature Range: Designed for reliable operation across ambient temperatures from -40°C to +85°C.
• High Reliability: Features 20-year data retention, 100 erase/write cycles, 2,000V ESD protection, and 200mA latchup immunity.
• Flexible Architecture: Contains 10 I/O macrocells configurable as registered or combinatorial outputs, supporting PAL and GAL emulation modes.

Programmable Logic Device Pld Applications

• Complex glue logic replacement in industrial control systems.
• State machine implementation requiring specific initialization sequences via power-up reset.
• Low-power embedded applications utilizing the zero standby power feature.
• PCI compliant interface logic design.

Programmable Logic Device Pld Procurement Notes

Verify that the ordering suffix 'XI' corresponds to the Industrial temperature range (-40°C to +85°C) and the TSSOP package type. Confirm RoHS compliance status if required, as standard packages may differ from green package options. Ensure programming equipment supports the specific JEDEC file format for preload and security fuse configuration.

Programmable Logic Device Pld Selection Notes

Select this part for designs requiring a 20 ns speed grade within the industrial temperature range. Compare against commercial variants (suffix 'XU') if operating conditions are limited to 0°C to +70°C. Consider the ATF22V10CZ series only for legacy replacements, as it has been superseded by the CQZ series. Evaluate the TSSOP package dimensions against available PCB real estate constraints.

Programmable Logic Device Pld Part Context

This component belongs to the ATF22V10CQZ family, which serves as a direct replacement for the obsolete ATF22V10CZ series. The CQZ architecture combines the low-frequency ICC characteristics of the 'Q' design with the zero-power features of the 'Z' design. It maintains compatibility with industry-standard 22V10 architectures, allowing migration from older PAL devices without hardware redesign.

Programmable Logic Device Pld Replacement Considerations

The ATF22V10CZ series is obsolete and replaced by the ATF22V10CQZ series. For equivalent performance in the same package, verify the speed grade match between the existing component and the ATF22V10CQZ-20XI. No other direct cross-model substitutes are documented in the provided datasheet.

Programmable Logic Device Pld FAQ

How does the device achieve zero standby power?

The device uses Atmel's patented Input Transition Detection (ITD) circuitry. When inputs are idle, the ITD circuit detects no transitions and powers down the internal logic, reducing supply current to a maximum of 100 µA.

What is the function of the pin keeper circuits?

Internal pin keeper circuits on input and I/O pins eliminate static power consumption associated with pull-up resistors. They maintain the last driven state of the pins when they are not being actively driven externally.

Can the registers be initialized to a specific state upon power-up?

Yes. The registers are designed to reset to the low state during power-up. Additionally, preload circuitry allows loading registers with high or low states to simplify testing and control sequencing via the programming software.