ATF1504AS-15JC68

Overview

The ATF1504AS-15JC68 is a high-performance, electrically-erasable complex programmable logic device (CPLD) from Microchip Technology. It features 64 macrocells with five product terms each, expandable to 40 via cascade logic. The device supports In-System Programmability (ISP) via JTAG and offers flexible logic macrocells with configurable flip-flops and output options. Key specifications include a maximum pin-to-pin delay of 15 ns, registered operation up to 76.9 MHz, and support for both 3.3V and 5.0V I/O pins. It is housed in a 68-lead PLCC package and operates within the commercial temperature range of 0°C to 70°C.

Feature Summary

• 64 Macrocells with 5 Product Terms per Macrocell, expandable to 40
• In-System Programmability (ISP) via 4-pin JTAG interface
• Maximum Pin-to-Pin Delay of 15 ns; Registered Operation up to 76.9 MHz
• Supports 3.3V or 5.0V I/O Pins with Programmable Slew Rate

Applications

• Logic integration replacing TTL, SSI, MSI, LSI, and classic PLDs
• PCI-compliant interface designs requiring high current drivers
• Boundary-scan testing and system debugging via IEEE Std. 1149.1
• State machine initialization with Power-up Reset feature

Procurement Notes

Verify the specific ordering suffix 'JC68' against official Microchip documentation to confirm the exact speed grade, package type, and temperature range. Ensure compatibility with existing PCB footprints for the 68-lead PLCC package. Confirm that the design compiler supports the required ISP and JTAG boundary-scan configurations for the target application.

Selection Notes

Select this component when 64 macrocells are sufficient for the logic density requirements. Choose the -15 speed grade if the maximum allowable propagation delay is 15 ns. Consider the -L variant if automatic microamp standby power management is required. Verify that the 68-pin PLCC package fits the mechanical constraints of the assembly.

Part Context

This part belongs to the ATF1504AS family of high-density CPLDs. It shares architectural similarities with other members like the ATF1504AS-10JC84 and ATF1504ASL-20QC100 but differs in package count and speed grade. The ATF1504AS series is designed for applications needing reprogrammability and high performance in a compact form factor.

Replacement Considerations

Direct replacements within the same family include ATF1504AS variants with different speed grades or packages, such as ATF1504AS-10JC84 (84-pin PLCC) or ATF1504AS-20JC68 (if available). Ensure the replacement maintains the 68-lead PLCC footprint and meets the 15 ns delay requirement.