M4A3-64/32-12VI48

Complex Programmable Logic Devices Overview

The M4A3-64/32-12VI48 is a Complex Programmable Logic Device (CPLD) from the ispMACH 4A family, manufactured by Lattice Semiconductor. It operates at 3.3 V and contains 64 macrocells with 32 user I/O options in a 48-pin TQFP package. The device features a maximum propagation delay of 12 ns and a maximum count frequency of 167 MHz. It utilizes E2CMOS technology for in-system programming via JTAG and supports mixed-voltage system designs.

Complex Programmable Logic Devices Feature Summary

• High-performance architecture with 5.0 ns to 12 ns propagation delay depending on speed grade
• In-system programmability via IEEE 1149.1 JTAG interface
• Flexible logic architecture with central switch matrix ensuring 100% routability
• Supports mixed supply voltage systems with 3.3-V and 5-V JEDEC-compliant operations

Complex Programmable Logic Devices Applications

• PCI compliant logic design
• Mixed voltage system integration
• Automated test equipment boundary scan testing

Complex Programmable Logic Devices Procurement Notes

Verify the specific speed grade suffix (-12) against the datasheet Table 2 to confirm commercial or industrial temperature range availability. Confirm package type matches the VI48 designation for 48-pin TQFP. Check for lead-free package options if required by project specifications.

Complex Programmable Logic Devices Selection Notes

Select this component for designs requiring 64 macrocells and 32 I/Os. Ensure the design fits within the 167 MHz f_CNT limit. Consider the 2:1 macrocell-to-I/O cell ratio which allows flexible pinout retention during design refits. Verify power consumption requirements against the static power specs for the 3.3V family.

Complex Programmable Logic Devices Part Context

This part belongs to the ispMACH 4A CPLD family, which offers densities from 32 to 512 macrocells. The M4A3 series specifically denotes 3.3-V operation. The family is characterized by its E2CMOS process, allowing for high performance and low power consumption compared to previous generations.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-64 variants with different speed grades or package options, such as M4A3-64/32-10VI48 or M4A3-64/32-7VI48, provided timing constraints are met.

Complex Programmable Logic Devices FAQ

What is the macrocell-to-I/O cell ratio for the M4A3-64/32?

The M4A3-64/32 has a 2:1 macrocell-to-I/O cell ratio, meaning each PAL block contains twice as many macrocells as I/O cells.

Does the M4A3-64/32 support JTAG boundary scan testing?

Yes, all ispMACH 4A devices, including the M4A3-64/32, are compliant with IEEE 1149.1 for boundary scan testing.

Can the M4A3-64/32 accept 5-V inputs?

Yes, the 3.3-V devices in the ispMACH 4A family can accept 5-V inputs, making them safe for mixed supply voltage system designs.