The LC5256B-4Q208C is a high-capacity CPLD (programmable logic device) from Lattice Semiconductor, designed specifically for the integration of advanced digital systems.
With 256 macrocells and a rich programmable input/output interface, this chip is suitable for bus logic, state machines, and high-speed control logic in integrated systems and communication systems.
As part of the Lattice LC5000 series, this CPLD provides low switching delay and non-volatile configuration memory and can replace multiple discrete logic ICs, reducing board size and complexity.
🔧 Technical Specifications – LC5256B-4Q208C
Manufacturer Lattice Semiconductor
Model LC5256B-4Q208C
Logic Capacity 256 macrocells
Number of Available Gates ~6,000
Registers D registers integrated in each macro unit
Input/output pins Up to 176 programmable input/output pins
Cross-talk delay ~4 nanoseconds (stage speed -4)
Configuration memory E²CMOS non-volatile
Clock frequency maximum 150 MHz
Package QFP208 (square package, 208 pins)
Core voltage 5 V
Operating temperature 0 °C to +70 °C (commercial temperature)
Programming method Internal programming via JTAG
📄 Lattice LC5000 series data manual (external)
✅ Main features
- ⚡ High-speed logic – low transition delay, suitable for time-sensitive designs.
- 🔌 Large number of inputs/outputs – provides up to 176 configurable inputs/outputs, supports a wide range of buses and interfaces.
- 🔋 Non-volatile – configuration information is stored without the need for external memory.
- 🛠 ISP support – in-system programming allows design updates after deployment.
- 🧩 Expandable logic resources – suitable for both small and large logic integrations.
🧰 Typical applications
1. Interface control unit
Acts as a communication bridge between the processor, peripheral devices, and memory devices.
2. Industrial control logic
Implementation of sensitive control functions of sequential and state machines.
3. Network devices
Used for data packet processing and signal routing in routers, switches, and communication systems.
4. Consumer electronics and integrated electronics
Functions as interconnectable logic that replaces multiple discrete integrated circuits in integrated electronic devices.
🔗 Related products DRex Electronics
At DRex Electronics, we offer active and older CPLDs for original equipment manufacturers (OEMs) who want to maintain or upgrade their systems, including the LC5256B-4Q208C.
Part Number Description Link
LC4512C-75FN256C 512-macrocell CPLD View Product
LC4032V-75TN48I Low Power CPLD View Product
LCMXO2280C-3FTN256I MachXO CPLD for use in security logic View product
📩 Request a quote for LC5256B-4Q208C
📚 Related links
🔗 Internal links
- Lattice Semiconductor product line at DRex
- Programmable Logic Devices Handbook
- Contact DRex to purchase
🌐 External links
- Lattice Semiconductor official website
- Get to know CPLDs – All About Circuits
- LC5000 series overview (Lattice)
