ATF1508AS-7QC160

Complex Programmable Logic Devices Overview

The ATF1508AS-7QC160 is a high-performance, high-density Complex Programmable Logic Device (CPLD) utilizing electrically-erasable technology. It features 128 macrocells with up to 40 product terms per macrocell via expandable logic chains. The device offers a maximum pin-to-pin delay of 7.5 ns and supports registered operation up to 125 MHz. It provides up to 96 bi-directional I/O pins and four dedicated input pins within a 160-lead PQFP package. Power management includes automatic standby modes and pin-controlled power-down options.

Complex Programmable Logic Devices Feature Summary

• 128 Macrocells with flexible logic structure supporting up to 40 product terms per macrocell through cascade logic.
• High-speed performance with 7.5 ns maximum pin-to-pin delay and registered operation up to 125 MHz.
• In-System Programmability (ISP) via JTAG interface compliant with IEEE Std. 1149.1.
• Dual voltage operation with VCCINT fixed at 5.0V and VCCIO configurable for 3.3V or 5.0V I/O levels.

Complex Programmable Logic Devices Applications

• PCI-compliant interface designs requiring high current drivers.
• Complex logic integration replacing multiple TTL, SSI, MSI, LSI, and classic PLDs.
• Systems requiring in-field design modifications via software-based ISP.
• Applications needing low-power standby modes with automatic detection of inactive periods.

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix '7' corresponds to the 7.5 ns delay requirement. Confirm the 'Q' indicates commercial temperature range (0°C to 70°C). Ensure the 'C160' suffix matches the required 160-lead PQFP package. Check for RoHS compliance status as indicated in the datasheet documentation.

Complex Programmable Logic Devices Selection Notes

Select this component when high density (128 macrocells) and fast propagation delays are critical. The dual-voltage architecture allows mixing 3.3V and 5.0V I/O standards. Consider the 'L' variant if ultra-low standby current (10 µA) is required instead of standard power consumption. Verify that the 160-pin package fits the PCB layout constraints.

Complex Programmable Logic Devices Part Context

This part belongs to the ATF1508AS(L) family of high-performance EE PLDs from Microchip Technology (formerly Atmel). The family shares core architecture including 128 macrocells and JTAG support but varies by speed grade, temperature range, and package type. The AS variant specifically denotes enhanced routing resources and advanced power management features compared to earlier generations.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements must maintain 128 macrocells and 160-lead PQFP packaging. Speed grades slower than 7.5 ns may be compatible if timing permits. Verify pin compatibility for VCCINT and VCCIO separation. Cross-reference with other ATF1508AS variants like -10QC160 if higher speed is not required.