M4A3-128/64-12CAI

Complex Programmable Logic Devices Overview

The M4A3-128/64-12CAI is a member of the ispMACH 4A family, a high-performance E²CMOS Complex Programmable Logic Device (CPLD). It operates at 3.3V and features 128 macrocells with 64 user I/O options. The device supports in-system programming via JTAG (IEEE 1149.1) and offers guaranteed fixed timing through SpeedLocking technology. Key electrical parameters include a maximum propagation delay (tPD) of 7.5 ns and a maximum counter frequency (fCNT) of 160 MHz. It includes dedicated input registers, programmable polarity, and reset/preset swapping capabilities within its flexible architecture.

Complex Programmable Logic Devices Feature Summary

• High-speed performance with tPD of 7.5 ns and fCNT of 160 MHz
• Flexible architecture with 128 macrocells and 64 user I/Os
• SpeedLocking feature for guaranteed fixed timing up to 20 product terms per output
• JTAG compliant for boundary scan testing and in-system programming

Complex Programmable Logic Devices Applications

• PCI compliant logic designs
• Mixed supply voltage system designs
• High-density programmable logic applications

Complex Programmable Logic Devices Procurement Notes

Verify the specific ordering suffix '12CAI' against the manufacturer's current datasheet to confirm package type and temperature grade. The 'C' indicates Commercial temperature range, while 'I' denotes Industrial. Ensure the selected variant matches the required operating conditions for the target application.

Complex Programmable Logic Devices Selection Notes

Select this device when 128 macrocells are sufficient for the design logic. The 12 speed grade (-12) provides a 7.5 ns propagation delay. Consider the 2:1 macrocell-to-I/O ratio which allows flexible routing between macrocells and I/O cells via the output switch matrix. Verify pin-out retention requirements as the architecture supports 100% pin-out retention after design changes.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which combines E²CMOS technology with a flexible PAL-block architecture interconnected by a central switch matrix. The family ranges from 32 to 512 macrocells. The M4A3-128 variant specifically offers a balance of density and speed, suitable for designs requiring moderate logic capacity with high routability.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-128 variants with different speed grades or packages, such as M4A3-128-10CAI or M4A3-128-14CAI. Cross-family replacements like the ispMACH 4000ZE series may offer similar functionality but require verification of pin compatibility and electrical specifications.