M4A3-64/32-10VI48

Complex Programmable Logic Devices Overview

The M4A3-64/32-10VI48 is a member of the ispMACH 4A family, a high-performance E2CMOS Complex Programmable Logic Device (CPLD). It features 64 macrocells and supports 32 user I/O options within a 48-pin Thin Quad Flat Pack (TQFP) package. The device operates at 3.3 V with a guaranteed propagation delay (tPD) of 10 ns and a maximum counter frequency (fCNT) of 167 MHz. Key architectural elements include a central switch matrix for 100% routability, flexible macrocell configurations supporting D/T registers and latches, and JTAG compliance for in-system programming and boundary scan testing.

Complex Programmable Logic Devices Feature Summary

• SpeedLocking technology ensures fixed timing performance independent of logic complexity, up to 20 product terms per output.
• Flexible architecture with dedicated input/output switch matrices enabling 100% pin-out retention during design refits.
• Supports mixed-voltage system designs by accepting 5-V inputs while operating at 3.3 V.
• Includes programmable security bits, individual output slew rate control, and hot-socketing capabilities.

Complex Programmable Logic Devices Applications

• PCI-compliant interface logic
• Mixed-signal system integration
• General-purpose programmable logic replacement

Complex Programmable Logic Devices Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range and 'V48' indicates the 48-pin TQFP package. Confirm that the '-10' speed grade aligns with the required 10 ns tPD specification for the target application timing constraints.

Complex Programmable Logic Devices Selection Notes

Select this model when 64 macrocells are sufficient for the design logic density. Ensure the 48-pin TQFP footprint matches the PCB layout. Consider the M4A3-64/64 variant if 64 user I/O pins are required instead of 32.

Complex Programmable Logic Devices Part Context

This component belongs to the ispMACH 4A family, which offers densities from 32 to 512 macrocells. The M4A3-64/32 specifically denotes a 3.3 V device with a 2:1 macrocell-to-I/O cell ratio, allowing multiple macrocells to drive fewer I/O pins through the output switch matrix.

Complex Programmable Logic Devices Replacement Considerations

Direct replacements within the same family include other M4A3-64 variants with different package or speed grades, such as M4A3-64/32-7VI48 or M4A3-64/64-10VI100, provided pin counts and speeds meet requirements.

Complex Programmable Logic Devices FAQ

What is the macrocell-to-I/O cell ratio for this device?

The M4A3-64/32 has a 2:1 macrocell-to-I/O cell ratio, meaning each I/O cell can be driven by one of eight available macrocells within its PAL block.

Does this device support in-system programming?

Yes, it supports 3.3-V in-system programming via the JTAG (IEEE 1149.1) interface.

Can this 3.3-V device accept 5-V inputs?

Yes, the ispMACH 4A family is designed to be safe for mixed supply voltage systems, allowing 3.3-V devices to accept 5-V inputs without overdriving them.