M4A3-32/32-7JC - 32 Macrocell CPLD | 7.5ns Delay | Lattice Semiconductor
The M4A3-32/32-7JC from Lattice Semiconductor is a high-performance Complex Programmable Logic Device (CPLD) designed for applications demanding fast response times and reliable logic processing. With 32 macrocells and a maximum propagation delay of just 7.5 nanoseconds, this electrically erasable programmable logic device (EE PLD) delivers exceptional performance for its class. The device operates on a 3.3V power supply (3V to 3.6V range), making it compatible with modern low-voltage systems while maintaining robust noise immunity. Packaged in a compact 44-PLCC (16.59x16.59mm) form factor, the M4A3-32/32-7JC offers excellent board-space efficiency for dense PCB layouts.
As an In-System Programmable (ISP) device, the M4A3-32/32-7JC provides remarkable flexibility for design iterations and field updates. Engineers can reprogram the logic configuration without physically removing the chip from the circuit board, significantly reducing development time and maintenance costs. The 32 I/O pins support versatile interfacing with other system components, while the 32 macrocells enable implementation of complex logic functions. Although marked as obsolete by the manufacturer, this CPLD remains popular for legacy system maintenance and specific applications where its proven reliability and performance characteristics are essential.
The technical specifications of the M4A3-32/32-7JC reveal its robust design capabilities. The device operates reliably across the commercial temperature range of 0 C to 70 C, making it suitable for most indoor electronic applications. The J-lead 44-LCC package ensures secure surface mounting and good thermal characteristics. With CMOS technology at its core, the CPLD offers low power consumption while maintaining high noise immunity. The 7.5ns maximum delay time ensures quick response for time-critical applications, and the 32-macrocell architecture provides adequate resources for implementing medium-complexity state machines, address decoders, and bus interface logic.
The M4A3-32/32-7JC finds applications across various industries including industrial automation (for machine control and sensor interfacing), telecommunications (for protocol conversion and signal processing), automotive electronics (for dashboard controls and sensor management), and consumer electronics (for display controllers and input processing). Its key features - fast propagation delay, reprogrammability, and compact packaging - make it particularly valuable in systems requiring reliable logic processing with minimal board space. The device's 3.3V operation allows for easy integration with modern microcontrollers and peripheral ICs, while its 32 I/O pins provide sufficient connectivity for most interface requirements.
For engineers working with legacy systems or specific applications that require the M4A3-32/32-7JC's exact specifications, this CPLD remains an excellent solution despite its obsolete status. Its combination of speed, flexibility, and proven reliability continues to support critical operations in various electronic systems. When selecting alternatives or maintaining existing designs, careful consideration of the M4A3-32/32-7JC's unique characteristics ensures proper system functionality and performance. Lattice Semiconductor's quality heritage in programmable logic devices gives users confidence in this component's capabilities for their important applications.
