LC4512C-75FT256C

Series:	ispMACH® 4000C
Packaging:	Tray
Part Status:	Obsolete
Programmable Type:	In System Programmable
Delay Time tpd(1) Max:	7.5ns
Voltage Supply - Internal:	1.65 V ~ 1.95 V
Number of Logic Elements/Blocks:	32
Number of Macrocells:	512
Number of I/O:	208
Operating Temperature:	0°C ~ 90°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	256-LBGA
Supplier Device Package:	256-FTBGA (17x17)
Base Part Number:	LC4512

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Introduction

Embedded CPLDs (Complex Programmable Logic Devices) are integrated circuits designed to act as a building block for system level designs. They are often used to replace discrete logic and interfacing logic in a design, reducing the number of components required and offering better performance. The LC4512C-75FT256C is a CPLD belonging to Lattice\'s LC Series, a family of CPLDs offering configurable logic resources, memory resources and a variety of other features and peripherals. The LC4512C-75FT256C provides a high level of integration, allowing designers to meet their application needs with fewer components and a reduced bill of materials. In this article, we will discuss the application field and working principle of the LC4512C-75FT256C

Application Field

The LC4512C-75FT256C can be used in a wide variety of applications due to its ability to be quickly configured in a variety of ways to meet a specific system\'s needs. Some examples of built in features of this CPLD that lend themselves to certain applications are its on-chip dual port RAMs and programmable PLLs.Optical networks: This CPLD is well suited for use in optical networks due to the integrated high-speed transceivers, programmable DDR2/3 data management and 4 Gb/s fiber channel PHY.Digital Video: The LC4512C-75FT256C boasts fifty-six 72Mbps LaneLink Transceivers and 756 user I/Os, making it an ideal candidate for high speed digital video applications. It also offers support for 28/36/48/64 Data Bits for HD 1080p and support for 38/64/88/128 Data Bits for 4K Ultra HD Resolutions.Automotive / Industrial control: The CPLDs on-chip high speed transceivers allow the device to be used in automotive and industrial applications where reliable data pathways are required. The device also features dedicated AC coupling caps and ground pins, allowing designers to safely isolate the power supplies between the logic and transceiver domains.

Working Principle

The LC4512C-75FT256C is a complex programmable logic device (CPLD) that allows designers to quickly program the device to meet their custom logic needs. The device is comprised of a number of different programmable elements, such as lookup tables (LUTs) and flip flops (FFs).The CPLD allows designers to programme the device to perform various logic functions by programming the lookup tables. Each lookup table is programmed to take a number of inputs (up to four) and produces an output based on the logic implemented in the table. The flips flops are then used to capture the outputs of the lookup tables and store them for use in further operations or to synchronise the outputs with the system clock.The LC4512C-75FT256C also includes a number of memory elements, such as dual port RAMs, phase locked loops (PLLs), phase interpolators (PI) and dedicated AC coupling caps. The RAM allows for efficient data management and can be configured to either read or write data from system memory. The PLLs can be programmed to divide and multiply the system clock frequency in order to generate precise clock signals, while the PI can be used to generate multi-cycle paths for precise timing control.

Conclusion

The LC4512C-75FT256C is a complex programmable logic device that offers a wide range of features and flexibility aimed at supporting a variety of applications. It allows designers to create customised logic functions through the use of lookup tables, while also offering on-chip memory resources, high speed signal processing capability and other features such as AC coupling capacitors and programmable PLLs. With its rich feature set, the LC4512C-75FT256C is an ideal choice for a variety of applications, ranging from optical networks, digital video and automotive/industrial control.

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