ATF22V10CZ-15PI

Overview

The ATF22V10CZ-15PI 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 device operates at a maximum pin-to-pin propagation delay of 15 ns and supports a maximum frequency of 83.3 MHz. It utilizes Flash memory technology for reprogrammability and offers zero standby power through Input Transition Detection circuitry. The component is housed in a 24-pin Plastic Dual Inline Package (PDIP) and is rated for industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Zero Standby Power: Achieves 100µA maximum standby current via Input Transition Detection (ITD) when idle.
• High Reliability: Features 20-year data retention, 100 erase/write cycles, and 200mA latchup immunity.
• Universal Architecture: Emulates most 24-pin PAL devices with three compiler modes (PAL, GAL, Synario).
• Latch Feature: Input keeper circuits hold inputs to the previous logic state to eliminate static power consumption.

Applications

• Direct replacement for standard 22V10 family PLDs and combinatorial logic circuits.
• State machine initialization requiring power-up reset functionality.
• Low-power embedded systems utilizing edge-sensing zero-power CMOS solutions.

Procurement Notes

Verify package integrity upon receipt, as the PDIP variant is susceptible to lead damage during handling. Confirm that the ordering suffix 'PI' corresponds to the 24-pin PDIP package and Industrial temperature range (-40°C to +85°C). Ensure programming equipment supports the specific voltage requirements for Flash memory erasure and writing operations defined in the datasheet.

Selection Notes

Select this part for applications requiring direct compatibility with legacy 22V10 architectures while needing reprogrammability. The 15ns speed grade is suitable for frequencies up to 83.3 MHz. Note that the ATF22V10CZ series is obsolete; the ATF22V10CQZ series is the recommended replacement for new designs, offering improved low-frequency ICC characteristics.

Part Context

This component belongs to the ATF22V10CZ/CQZ family of high-performance EEPLDs. The 'CZ' designation indicates the original commercial/industrial Flash-based version, which has been superseded by the 'CQZ' variant. The 'PI' suffix specifically identifies the 24-pin PDIP package configuration intended for industrial temperature operation.

Replacement Considerations

The ATF22V10CZ series is officially obsolete and replaced by the ATF22V10CQZ series. For equivalent performance in industrial applications, consider the ATF22V10CQZ-20PI or ATF22V10CQZ-20PU. Downgrading a commercial CZ device to industrial use requires de-rating power by 30%.

FAQ

How does the device achieve zero standby power?

The device uses Atmel's patented Input Transition Detection (ITD) circuitry. When the device is idle, it automatically powers down to a zero power mode, limiting standby current to a maximum of 100µA.

What is the function of the input keeper circuits?

The internal input and I/O pin-keeper circuits maintain the last driven state of pins that are not being externally driven. This prevents floating inputs and eliminates static power consumption associated with pull-up resistors.

Can this device replace standard PAL devices?

Yes, the ATF22V10CZ incorporates a superset of generic architectures that allows it to directly replace the 22V10 family and most 24-pin combinatorial PLDs using compatible compiler software.