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XCR3256XL-7TQ144C from XILINX

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XCR3256XL-7TQ144C

Manufacturer: XILINX

256 Macrocell CPLD

Partnumber Manufacturer Quantity Availability
XCR3256XL-7TQ144C,XCR3256XL7TQ144C XILINX 702 In Stock

Description and Introduction

256 Macrocell CPLD The **XCR3256XL-7TQ144C** is a **CPLD (Complex Programmable Logic Device)** manufactured by **Xilinx**. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Device Type:** CPLD (CoolRunner XPLA3 Family)  
- **Logic Elements:** 256 macrocells  
- **Gates:** 6,000 usable gates  
- **Speed Grade:** **-7** (7ns pin-to-pin delay)  
- **Package:** **TQFP-144** (Thin Quad Flat Pack, 144 pins)  
- **Operating Voltage:** **3.3V** (with 5V-tolerant I/O)  
- **Operating Temperature:** Commercial (0°C to +70°C)  
- **On-Chip Memory:** None (pure CPLD)  
- **I/O Pins:** **98** (usable)  
- **JTAG Support:** Yes (for programming and debugging)  

### **Descriptions:**  
- **Architecture:** Advanced low-power CMOS technology  
- **Macrocell Structure:** Flexible, with individual product-term allocation  
- **Clock Management:** Multiple global and product-term clocks  
- **Power Consumption:** Ultra-low power (ideal for battery-operated devices)  
- **Security:** Programmable security bit to prevent unauthorized access  

### **Features:**  
- **Fast Pin-to-Pin Delays:** 7ns (for -7 speed grade)  
- **5V I/O Tolerance:** Allows interfacing with 5V systems  
- **In-System Programmable (ISP):** Supports reprogramming via JTAG  
- **High Noise Immunity:** Reliable operation in noisy environments  
- **Multiple Power-Saving Modes:** Including standby and sleep modes  
- **Wide Operating Range:** Supports 3.0V to 3.6V VCC  

This CPLD is commonly used in **glue logic, bus interfacing, and low-power applications**.  

(Note: All details are based on official Xilinx documentation.)

Application Scenarios & Design Considerations

256 Macrocell CPLD

Alternative Part Number

  • XC2C256-7TQ144C --: CoolRunner-II CPLD in the same 144-pin TQFP package with comparable macrocell count and speed grade, offering a similar function as a drop-in class replacement.
  • EPM3256ATC144-7 --: MAX 3000A CPLD with 256 macrocells in a 144-pin TQFP, a common cross-vendor alternative for the XCR3256XL with similar logic density and speed.
  • LC4256V-75TN144C --: ispMACH 4000V CPLD with 256 macrocells in a 144-pin TQFP, providing comparable density and 3.3V operation as an alternative CPLD solution.
  • EPM3256AQC208-7 --: MAX 3000A CPLD with comparable 256-macrocell logic density and 7 ns speed grade; a well-established functional alternative in the same class, though pinout and supply voltage differ.
  • ATF1508AS-7AX144C --: High-density CPLD with 128 macrocells and 7 ns speed grade in a 144-pin TQFP; usable for lower-density redesigns where the full 256-macrocell capacity is not required.

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