Altera EPM7128ATC144-12 CPLD - High-Performance 128-Cell EE PLD | 12ns Delay
The Altera EPM7128ATC144-12 is a flagship Complex Programmable Logic Device (CPLD) from Intel's (formerly Altera) MAX 7000 family, designed for high-speed logic integration. This 128-macrocell EE PLD delivers a blazing-fast 5ns pin-to-pin logic delay (12ns commercial-grade) with 2,500 equivalent gates, making it perfect for timing-critical applications. Operating at 3.3V 10% with 100 user I/O pins in a compact 144-TQFP package, it features 8 logic array blocks (LABs) with programmable interconnect. The device supports in-system programmability (ISP) via IEEE Std. 1149.1 JTAG, enabling field upgrades without physical removal.
Engineers favor the EPM7128ATC144-12 for its predictable timing model and non-volatile EEPROM configuration, which eliminates external boot memory. Its architecture combines PAL-like simplicity with FPGA-like density, offering 5V-tolerant I/O pins despite its 3.3V core. The device consumes <50mA typical current at 25MHz and includes advanced features like multi-voltage I/O support (3.3V/5V), programmable slew rate control, and individual output enable per pin. With a 0 C to +70 C commercial temperature range, it meets rigorous industrial standards while maintaining signal integrity up to 125MHz internal frequencies.
Key technical specifications include 128 programmable flip-flops with asynchronous clear/preset, 64 expander product terms, and dedicated global clear/clock signals. The macrocell architecture supports both combinatorial and registered logic with programmable power-saving modes. Designers leverage Quartus II (legacy) or Intel Quartus Prime software for HDL (VHDL/Verilog) or schematic-based development. The 144-pin TQFP package (20 20mm) provides optimal pinout flexibility with four dedicated input-only pins for global control signals. Security features include a programmable bitstream encryption option to prevent IP theft.
This CPLD excels in protocol bridging (UART to SPI), glue logic consolidation, and state machine implementation across industries. Common applications include telecom interface cards (T1/E1 line controllers), automotive body electronics (window/lock control), and industrial PLCs (I/O expansion). Its deterministic timing makes it ideal for real-time systems like medical ventilator control or test equipment trigger logic. Compared to FPGAs, the EPM7128ATC144-12 offers lower static power (<1mA standby) and instant-on operation critical for automotive and battery-powered devices.
For legacy system upgrades, this device provides drop-in replacement for older 5V CPLDs with 3.3V migration. Its 10,000 program/erase cycles endurance and 20-year data retention ensure long-term reliability. When paired with Altera s ByteBlaster MV programming cable, engineers achieve rapid prototyping cycles. The EPM7128ATC144-12 remains in active production despite being a mature product, with guaranteed supply chain continuity for industrial customers. For new designs requiring higher density, consider the MAX II or MAX 10 families, but for proven 3.3V CPLD performance, this device remains an industry benchmark.
