EPM7256AFC256-10 CPLD - High-Performance In-System Programmable Logic Device | Altera
The EPM7256AFC256-10 from Altera represents the pinnacle of Complex Programmable Logic Device (CPLD) technology, combining high-speed performance with unparalleled flexibility. As an in-system programmable (ISP) device, it allows engineers to reconfigure logic functions without physical removal from the circuit board - a critical feature for rapid prototyping and field upgrades. With an impressive 10ns maximum propagation delay and 5000-gate capacity, this 3.3V CPLD delivers the speed and density required for demanding digital applications. The 256 macrocells organized across 16 logic blocks provide exceptional design flexibility, while the 164 I/O pins enable extensive system connectivity. Packaged in a space-efficient 256-Fine Pitch Ball Grid Array (17x17mm), this device excels in applications where board real estate is at a premium.
Engineers will appreciate the EPM7256AFC256-10's robust operating characteristics, including a wide temperature range of 0 C to 70 C and reliable 3V to 3.6V internal voltage supply. The BGA package ensures excellent thermal and electrical performance, while the surface-mount design facilitates automated assembly processes. Altera's advanced CMOS technology provides the foundation for this device's low power consumption and high noise immunity. With 5V-tolerant I/O capability (when using appropriate external resistors), the CPLD can interface seamlessly with both 3.3V and 5V systems. The device supports multiple programming methods including JTAG interface for in-system programming, making it suitable for both development and production environments.
When examining the EPM7256AFC256-10's architectural advantages, several features stand out. The hierarchical interconnect structure provides predictable timing performance, while the multi-level security mechanism protects intellectual property. Each macrocell can be individually configured for combinatorial or registered operation, with programmable clock and reset options. The device offers global and product-term clocking options, along with programmable power-saving modes that reduce standby current by up to 50%. These characteristics make the CPLD particularly valuable for battery-powered applications. With 100% parameter testing and burn-in screening, Altera ensures military-grade reliability in this commercial temperature-range device.
The EPM7256AFC256-10 finds application across numerous industries due to its versatile capabilities. In telecommunications, it serves in protocol conversion and interface bridging. Industrial systems leverage its robustness for motor control and PLC implementations. Automotive designs utilize it for sensor interfacing and dashboard logic, while medical equipment benefits from its deterministic timing in diagnostic devices. Consumer electronics manufacturers employ it for display controllers and peripheral interfaces. The device particularly shines in applications requiring glue logic consolidation, state machine implementation, or bus interfacing where its high I/O count and fast response provide distinct advantages over discrete logic solutions.
For designers considering the EPM7256AFC256-10, Altera provides comprehensive development support through the Quartus II design software, offering schematic entry, VHDL/Verilog synthesis, and powerful simulation tools. The device is supported by a range of evaluation boards and programming cables, accelerating time-to-market. With its combination of density, speed, and reprogrammability, this CPLD offers an optimal balance between the flexibility of FPGAs and the instant-on reliability of traditional PLDs. As a mature product with proven reliability in thousands of applications, it continues to be the CPLD of choice for engineers needing to implement complex logic while maintaining strict control over power consumption and board space requirements.
