ATF1500ABV-12AC

Overview

The ATF1500ABV-12AC is a high-performance, high-density electrically-erasable complex programmable logic device (CPLD) manufactured by Microchip Technology. It features 32 macrocells and up to 36 inputs within a fully connected architecture. The device supports operation between 2.7V and 5.5V with a maximum pin-to-pin delay of 12 ns and registered operation speeds up to 90.9 MHz. It utilizes advanced EEPROM technology for complete reprogrammability, offering 10,000 program/erase cycles and 20-year data retention. Available in 44-lead PLCC and TQFP packages, it includes flexible logic macrocells, power management features, and pin-keeper inputs.

Feature Summary

• High-density CPLD with 32 macrocells, 36 inputs, and 100% connected global input and feedback architecture.
• Advanced EEPROM technology providing 10,000 program/erase cycles, 20-year data retention, and 2000V ESD protection.
• Flexible logic macrocells supporting D/T/Latch configurable flip-flops, global/individual register control, and programmable output slew rate.
• Power management features including pin-controlled standby mode (typical 5 µA) and programmable pin-keeper inputs.

Applications

• Integration of logic from several TTL, SSI, MSI, and classic PLDs.
• Sequential logic operations requiring high-speed performance up to 90.9 MHz.
• Applications requiring low-power standby modes and reduced system noise through slew rate control.

Procurement Notes

Verify the component origin as Atmel Corporation, now part of Microchip Technology, based on the provided datasheet documentation. Confirm the specific ordering code ATF1500ABV-12AC corresponds to the commercial temperature range (0°C to 70°C) and the selected package type (44A for TQFP or 44J for PLCC). Ensure design files account for the security fuse usage and preload capabilities if required for testing sequences.

Selection Notes

Select the ATF1500ABV-12AC for designs requiring 32 macrocells with full connectivity to eliminate pinout changes during logic modifications. Choose the -12 speed grade for applications needing a maximum pin-to-pin delay of 12 ns and registered frequencies up to 90.9 MHz. Consider the industrial temperature variant (-15AI/JI) if operation below 0°C is necessary, noting that commercial parts must be downgraded one speed grade and de-rated by 30% for industrial use.

Part Context

The ATF1500ABV belongs to the ATF1500 series of high-performance EEPLDs. This series is characterized by its advanced EEPROM technology, allowing for non-volatile storage and frequent reprogramming. The device integrates a fully connected global bus and regional foldback buses to support complex logic functions with minimal routing constraints, distinguishing it from simpler SPLDs or older PLD technologies.

Replacement Considerations

For industrial temperature requirements, consider the ATF1500ABV-15AI or ATF1500ABV-15JI variants, which operate from -40°C to 85°C. When substituting commercial parts for industrial environments, downgrade one speed grade and apply a 30% power derating factor as specified in the datasheet guidelines.

FAQ

What is the maximum operating frequency for registered operations?

The ATF1500ABV-12AC supports registered operation at speeds up to 90.9 MHz, depending on the feedback configuration and clock source used.

How does the pin-keeper feature function?

The pin-keeper circuit maintains the last known state of an input or I/O pin if it becomes floating, preventing intermediate voltage levels that cause unnecessary power consumption and system noise without requiring external pull-up resistors.

What are the power-down mode specifications?

In pin-controlled power-down mode, the supply current drops to typically less than 10 µA. All internal logic states and outputs are latched and held, and input signals except the PD pin are blocked until the PD pin is brought low.