Table of Contents
- 1.0 What is the LC5512MC-75F256C? An Overview
- 2.0 Key Technical Specifications (Datasheet Breakdown)
- 3.0 Advanced Features of the LC5512MC-75F256C
- 4.0 Applications, Programming, and Design Considerations
In the realm of digital logic design, Complex Programmable Logic Devices (CPLDs) serve as a crucial bridge between simple logic gates and highly complex FPGAs. For engineers needing a combination of speed, significant I/O, and non-volatile configuration, the LC5512MC-75F256C from Lattice Semiconductor is a powerful and flexible solution. This CPLD is designed to handle complex logic functions with deterministic timing, making it a robust choice for a variety of control and interface applications.
This technical guide will provide a comprehensive breakdown of the LC5512MC-75F256C datasheet, exploring its core specifications, advanced features, and typical applications to help you determine if it's the right fit for your next embedded system design.
1.0 What is the LC5512MC-75F256C? An Overview
The LC5512MC-75F256C is a high-density, In-System Programmable (ISP) Complex Programmable Logic Device (CPLD) manufactured by Lattice Semiconductor. It integrates a significant amount of reconfigurable logic, memory, and specialized I/O into a single chip.
1.1 Core Definition: A High-Density CPLD
At its core, this device is designed for:
- Logic Integration: Consolidating glue logic, state machines, and other digital functions into one package.
- High Performance: Offering fast pin-to-pin delays for time-critical applications.
- Flexibility: Being infinitely reconfigurable through its programming interface.
1.2 Belonging to the ispXPLD® 5000 Family
The LC5512MC-75F256C is part of the ispXPLD® 5000 series (specifically, the 5000MC variant, indicating a 1.8V core). This family is known for its flexible architecture, advanced I/O capabilities, and on-chip memory resources.
2.0 Key Technical Specifications (Datasheet Breakdown)
A deep dive into the datasheet reveals the capabilities of this CPLD.
2.1 Core Logic and Memory
| Specification | Value | Source |
|---|---|---|
| Programmable Type | In-System Programmable | |
| Number of Macrocells | 512 | |
| Number of Gates | 150k | |
| Logic Elements/Blocks | 16 | |
| Memory Type | EEPROM, SRAM | |
| Maximum RAM Bits | 256K |
2.2 Performance and Speed
| Specification | Value | Source |
|---|---|---|
| Delay Time tpd(1) Max | 7.5 ns | |
| Maximum Operating Frequency (fMAX) | 275 MHz |
2.3 Operating Conditions and Package Details
| Specification | Value | Source |
|---|---|---|
| Voltage Supply - Internal | 1.65V ~ 1.95V (1.8V nominal) | |
| Operating Supply Voltage | 3.3 V | |
| Number of I/O | 193 | |
| Operating Temperature | 0°C ~ 90°C (TJ) | |
| Package / Case | 256-BGA | |
| Supplier Device Package | 256-FPBGA (17x17) | |
| Mounting Type | Surface Mount |
3.0 Advanced Features of the LC5512MC-75F256C
This CPLD is more than just a collection of logic cells; it integrates powerful features to simplify system design.
3.1 sysIO™ Interfaces for Flexible Connectivity
The device supports a wide range of I/O standards, allowing it to interface directly with various components without the need for external level-shifting logic. Key features of the sysIO cells include:
- Multiple Standards: Support for LVCMOS (1.8V, 2.5V, 3.3V), LVTTL, SSTL, HSTL, PCI, LVDS, and more.
- 5V Tolerant I/O: Inputs can be safely driven up to 5.5V when an I/O bank is configured for 3.3V operation.
- Hot-Socketing: Allows the device to be safely inserted or removed from a live backplane.
- Programmable Impedance and Bus-Keepers: Flexible control over bus maintenance (pull-up, pull-down, etc.).
3.2 sysCLOCK™ PLLs for Timing Control
On-chip Phase-Locked Loops (PLLs) provide sophisticated clock management capabilities.
- Clock Synthesis: Multiply and divide clock frequencies by factors between 1 and 32.
- Clock Shifting: The ability to phase-shift clock signals to manage timing within the system.
- External Feedback: Enables board-level clock deskewing for improved system timing margins.
3.3 Expanded In-System Programmability (ispXP™)
The ispXP technology offers a high degree of flexibility and security.
- Instant-On Capability: The device is live at power-up.
- Infinite Reconfigurability: The CPLD can be reprogrammed in the field via its IEEE 1532 interface or a microprocessor interface.
- Design Security: Features to protect the intellectual property programmed into the device.
4.0 Applications, Programming, and Design Considerations
The combination of high-density logic, speed, and advanced I/O makes the LC5512MC-75F256C suitable for a variety of demanding applications.
4.1 Common Applications for the LC5512MC-75F256C
- Industrial Automation: Implementing control logic, state machines, and interfacing with various sensors and actuators.
- Test and Measurement Instruments: Creating custom logic for data acquisition, signal processing, and control interfaces.
- Medical Devices: Used in control modules and data acquisition systems where reliable and stable performance is required.
- Control Systems: The device is well-suited for embedded and control applications that require reliable logic and easy programmability.
4.2 Programming and Development
- Programming Interface: The LC5512MC-75F256C is an In-System Programmable device, configured via its IEEE 1532 interface.
- Development Tools: Lattice Semiconductor provides a suite of development tools for designing, compiling, and programming their CPLDs.
- Hardware: A compatible programming cable (e.g., Lattice USB programmer) is required to interface between the development PC and the target board's JTAG/IEEE 1532 port.
The LC5512MC-75F256C stands out as a powerful and versatile CPLD for designers who need a balance of speed, density, and advanced I/O capabilities. Its in-system programmability, combined with on-chip PLLs and highly flexible I/O banks, allows it to serve as a robust logic hub in a wide array of complex electronic systems.
Looking to integrate this powerful CPLD into your next design? Find the LC5512MC-75F256C and a comprehensive range of programmable logic devices at aichiplink.com today!
Written by Jack Elliott from AIChipLink.
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