M4A3-256/128-10SAC

Complex Programmable Logic Devices Overview

The M4A3-256/128-10SAC is a member of the ispMACH 4A family, a high-performance E2CMOS Complex Programmable Logic Device (CPLD). It features 256 macrocells and supports up to 128 user I/O options. The device operates at 3.3V with a guaranteed propagation delay (tPD) of 7.5ns and a maximum count frequency (fCNT) of 167MHz. It utilizes SpeedLocking technology for fixed timing performance and includes JTAG boundary scan compliance for in-system programming and testing.

Complex Programmable Logic Devices Feature Summary

• 256 Macrocells with flexible architecture supporting synchronous and asynchronous modes
• SpeedLocking feature guarantees fixed timing with tPD of 7.5ns and fCNT of 167MHz
• JTAG (IEEE 1149.1) compliant for boundary scan testing and in-system programming
• Supports mixed-voltage designs with 3.3V operation and 5V input tolerance

Complex Programmable Logic Devices Applications

• High-speed interface bridging in mixed-voltage systems
• Complex logic control in industrial automation equipment
• Address decoding and bus buffering in embedded systems
• State machine implementation requiring predictable timing

Complex Programmable Logic Devices Procurement Notes

Verify the specific package type associated with the 'SAC' suffix against official Lattice Semiconductor documentation, as datasheet revisions may define package variations. Confirm that the -10 speed grade aligns with the required 7.5ns tPD specification for the target application design constraints.

Complex Programmable Logic Devices Selection Notes

Select this model when 256 macrocells are sufficient for the logic density requirements. The -10 speed grade provides a 7.5ns delay, suitable for applications not requiring the fastest 5.0ns commercial grade. Ensure the design utilizes the 3.3V supply voltage and leverages the JTAG interface for configuration management.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which offers densities from 32 to 512 macrocells. The family is characterized by its E2CMOS process, allowing for non-volatile storage without external flash. The M4A3-256 variant specifically balances high I/O count with moderate logic density, fitting into the mid-range of the 3.3V product line.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-256 variants with different speed grades (e.g., -5, -6, -7) or package options. Cross-family migration to ispMACH 4V or MachXO series requires architectural re-evaluation due to differences in logic structure and power characteristics.