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XC18V256VQ44C from XILINX

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XC18V256VQ44C

Manufacturer: XILINX

In-system programmable configuration PROM.

Partnumber Manufacturer Quantity Availability
XC18V256VQ44C XILINX 28 In Stock

Description and Introduction

In-system programmable configuration PROM. The **XC18V256VQ44C** is a configuration PROM (Programmable Read-Only Memory) manufactured by **Xilinx**. Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** Xilinx  
- **Series:** XC18V  
- **Density:** 256Kb (32K x 8)  
- **Package:** VQ44 (44-Pin Plastic Quad Flat Pack)  
- **Operating Voltage:** 3.3V  
- **Speed Grade:** C (Commercial temperature range: 0°C to +70°C)  
- **Programming Voltage:** 3.3V (in-system programmable)  
- **Endurance:** 10,000 program/erase cycles  
- **Data Retention:** 20 years  

### **Descriptions:**
- The **XC18V256VQ44C** is a **one-time programmable (OTP)** configuration PROM designed to store configuration bitstreams for Xilinx FPGAs.  
- It is used to load configuration data into Xilinx devices at power-up.  
- Supports **Master Serial, Slave Serial, and SelectMAP** configuration modes.  
- Features **JTAG boundary-scan support** for programming and testing.  

### **Features:**
- **In-System Programmable (ISP)** via JTAG interface.  
- **Low-power CMOS technology** (standby current < 50 µA).  
- **3.3V single-supply operation.**  
- **High reliability** with 10,000 program/erase cycles.  
- **Compatible with Xilinx FPGA families** (Spartan, Virtex, and others).  
- **Industrial-standard pinout** for easy integration.  

This device is primarily used for **non-volatile storage of FPGA configuration data** to ensure reliable system startup.  

(Note: Always refer to the official Xilinx datasheet for the most accurate and updated information.)

Application Scenarios & Design Considerations

In-system programmable configuration PROM.

Alternative Part Number

  • EPC2LC20 --: Configuration PROM in the same density class (2 Mbit) with a different series name, commonly used as a functional substitute for Xilinx configuration memories in legacy designs.
  • AT17LV256-10JU --: 256 Kbit FPGA configuration EEPROM with a distinct prefix and series, offering comparable serial configuration memory functionality.
  • M25P20-VMN6TP --: 2 Mbit serial flash memory with a different naming scheme, suitable as an alternative non-volatile configuration storage device.
  • XC18V256VQ44I --: Same PROM density and VQ44 package, industrial temperature grade; drop-in compatible when wider temperature range is acceptable.
  • XC18V512VQ44C --: Same Platform Flash family and VQ44 package with double the memory density; pin-compatible and usable if the larger configuration image fits.
  • XC17S250VQ44C --: Alternative Xilinx serial configuration PROM in the same VQ44 package with comparable density; suitable for designs that can use the 17S series.

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