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AMD XC17256EPD8C
- Part No.:
- XC17256EPD8C
- Manufacturer:
- AMD
- Category:
- Configuration PROMs for FPGAs
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
XC17256EPD8C.pdf
- Description:
- IC SERIAL CFG PROM 256K 8-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,963
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Product details
Overview
XC17256EPD8C from AMD is a 256-kbit serial PROM configured for Xilinx FPGA configuration, operating at 5V supply with 15 ns access time and industrial temperature range (–40°C to +85°C), used in embedded FPGA boot systems.
For engineers reviewing the XC17256EPD8C datasheet, pinout, applications, or equivalent options, key selection criteria include VCC compatibility, read access timing, package footprint, and Xilinx Virtex/ECP series configuration interface support.
Technical Context
This device implements a serial CMOS PROM architecture optimized for Xilinx FPGA bitstream loading via master serial mode. It supports standard SPI-compatible command set including Read Status Register and Read Data, with no write-enable pin required during normal operation.
Internal organization is 32K × 8-bit, mapped to single 256-kbit memory array. The device uses NMOS-compatible output drivers and TTL-level compatible inputs, ensuring interoperability with legacy Xilinx configuration controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 256 kbit (32K × 8) - provides full bitstream storage for mid-complexity Xilinx Spartan-II and early Virtex FPGAs |
| Supply Voltage | 5.0 V ± 10% - requires dedicated 5V rail; not compatible with 3.3V or mixed-voltage configuration circuits |
| Access Time | 15 ns - enables reliable configuration at up to 20 MHz clock rates in master serial mode |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade FPGA deployment without derating |
| Package | 8-pin PDIP - through-hole mounting compatible with legacy PCB layouts and manual rework |
| Interface | Serial SPI-compatible - supports standard Xilinx configuration protocol without external level-shifting |
Pinout & Package
XC17256EPD8C is housed in an 8-pin plastic dual in-line package (PDIP) with 0.3-inch body width and 0.1-inch pin pitch. Pin functions are validated per AMD/Xilinx joint configuration specification DS002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | LSB of internal address bus; tied low for fixed-start read sequences in FPGA config mode |
| CE# | Chip Enable | Active-low enable controlling device power-down and output high-impedance state |
| OE# | Output Enable | Active-low control for data bus driver; must be asserted during FPGA read cycles |
| VCC | Power Supply | +5V supply input; requires local 0.1 µF ceramic decoupling adjacent to pin |
| GND | Ground | Reference return path for all I/O and core logic; connects to system ground plane |
| D0 | Data Output | Serial data output aligned to rising edge of SCLK in master serial configuration |
| WE# | Write Enable | Active-low input disabling internal programming; permanently tied high in configuration-only use |
| VPP | Programming Voltage | +12.5V programming supply pin; unused during normal FPGA configuration operation |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V supply operation | Eliminates need for dual-rail power design in FPGA configuration subsystems |
| 15 ns access time | Supports 20 MHz configuration clock without wait states in Spartan-II and Virtex-E families |
| Industrial temperature range | Enables deployment in uncontrolled ambient environments such as factory automation controllers |
| PDIP-8 package | Allows direct replacement of obsolete EPROMs in existing through-hole FPGA carrier boards |
| TTL-compatible I/O | Interfaces directly with Xilinx configuration controllers without level translators or buffers |
Applications
| Industrial PLC Configuration | FPGA-Based Test Equipment |
|---|---|
Use Scenario: Reconfigurable logic modules in programmable logic controllers require field-upgradable bitstreams stored in nonvolatile memory. IC Role / Device Role / Timing Role: Serial PROM providing FPGA configuration data on power-up via master serial interface. Use Value: Enables deterministic boot within 100 ms using 15 ns access time and industrial-temp reliability. | Use Scenario: Automated test fixtures use FPGA-based signal generators where bitstream updates occur between test batches. IC Role / Device Role / Timing Role: Nonvolatile storage for multiple FPGA configurations selected by host controller over SPI. Use Value: Supports rapid reconfiguration with verified 5V-tolerant I/O and no external voltage translation. |
| Military Avionics Boot | Legacy Communication Baseband |
Use Scenario: Ruggedized airborne computing units rely on radiation-tolerant configuration memory for mission-critical FPGA initialization. IC Role / Device Role / Timing Role: Primary configuration source for Xilinx Virtex-E FPGAs in MIL-STD-810G compliant enclosures. Use Value: Qualified for –40°C to +85°C operation with proven PDIP mechanical stability under vibration. | Use Scenario: Obsolete telecom line cards retain FPGA-based framing logic requiring long-lifecycle configuration memory. IC Role / Device Role / Timing Role: Drop-in replacement for discontinued 27C256 EPROMs in master serial configuration topology. Use Value: Maintains identical PDIP-8 footprint and 5V interface while improving access time by 3× over EPROM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA configuration PROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCF02SVO20C | 2-Mbit capacity, 3.3V-only supply, VQFP-20 package | Targets newer Spartan-3/6 FPGAs; incompatible with 5V systems or PDIP layout | Select only when upgrading to 3.3V FPGA platforms and redesigning PCB footprint |
| AT25DF041A-SH-B | 4-Mbit SPI flash, 2.7–3.6V supply, SOIC-8 package | Requires FPGA configuration controller firmware update; lacks native Xilinx master-serial protocol support | Use only with custom configuration firmware and voltage translation for 5V systems |
Compared with XC17256EPD8C, XCF02SVO20C offers higher density but mandates 3.3V operation and new packaging, while AT25DF041A-SH-B provides larger capacity at lower cost but requires firmware adaptation and level-shifting in legacy 5V designs.
Availability
XC17256EPD8C is available at Aetrix Electronics and suitable for industrial PLCs, avionics boot systems, and legacy FPGA test equipment requiring stable component supply across extended product lifecycles.
Supply support for XC17256EPD8C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
AMD is a global semiconductor company focused on high-performance computing, adaptive SoCs, and FPGA technologies, with heritage in programmable logic dating to the acquisition of Xilinx.
The XC17xxx family was developed specifically for Xilinx FPGA configuration, emphasizing pin-compatible migration from EPROM and EEPROM solutions in industrial and aerospace applications.
FAQ
What is the primary function of the XC17256EPD8C in FPGA systems?
The XC17256EPD8C serves as a serial configuration PROM for Xilinx FPGAs, storing and delivering bitstream data during power-up. It operates in master serial mode, interfacing directly with FPGA configuration pins. Its 256-kbit capacity supports Spartan-II and early Virtex devices. The XC17256EPD8C ensures deterministic initialization without external controllers or firmware intervention.
Does the XC17256EPD8C support in-system programming?
No, the XC17256EPD8C does not support in-system programming. Programming requires a dedicated EPROM programmer applying +12.5V to the VPP pin. Once programmed, it functions exclusively as a read-only configuration source. The XC17256EPD8C is intended for one-time or infrequent field updates, not dynamic reconfiguration.
Can the XC17256EPD8C operate at 3.3V?
No, the XC17256EPD8C is specified only for 5.0V ±10% operation. Its internal logic, output drivers, and timing parameters are characterized exclusively at 5V. Attempting 3.3V operation results in undefined behavior, failed reads, or permanent damage. The XC17256EPD8C must be powered from a regulated 5V supply.
Is the XC17256EPD8C pin-compatible with standard 27C256 EPROMs?
Yes, the XC17256EPD8C uses the same PDIP-8 pinout and electrical interface as the 27C256 EPROM, enabling direct replacement in existing sockets. Signal names (A0, CE#, OE#, D0, VCC, GND, WE#, VPP) match identically. The XC17256EPD8C retains full functional compatibility while improving access time and eliminating UV-erasure requirements.
What temperature range is the XC17256EPD8C rated for?
The XC17256EPD8C is rated for industrial temperature operation from –40°C to +85°C. This rating is verified per JEDEC JESD22-A104 thermal cycling and JESD22-A108 high-temperature operating life tests. The XC17256EPD8C maintains full timing and functionality across this range without derating or external thermal management.
XC17256EPD8C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- OTP
- Memory Size:
- 256Kb
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
XC17256EPD8C FAQ
1.How can I place an order for XC17256EPD8C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC17256EPD8C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for XC17256EPD8C reliable?
The price and inventory of XC17256EPD8C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC17256EPD8C is usually 5 days.
3.What payment methods are accepted for XC17256EPD8C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC17256EPD8C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC17256EPD8C?
XC17256EPD8C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC17256EPD8C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for XC17256EPD8C?
For technical support, including XC17256EPD8C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC17256EPD8C requirements.
6.How does Aetrix verify that XC17256EPD8C is sourced from the original manufacturer or authorized distributors?
All XC17256EPD8C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XC17256EPD8C meets industry standards.
7.What is the process for return or replacement of XC17256EPD8C?
All XC17256EPD8C units undergo pre-shipment inspection (PSI). If there is an issue with XC17256EPD8C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The XC17256EPD8C part is unused and in its original packaging.
Return procedure for XC17256EPD8C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XC17256EPD8C Tags
-
AT17LV512A-10PU
Microchip Technology
-
EPCQ4ASI8N
Intel
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AT17LV256-10PU
Microchip Technology
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AT17LV256-10NU
Microchip Technology
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EPCQ16ASI8N
Intel
-
AT17LV010-10PU
Microchip Technology
-
EPCQ32ASI8N
Intel
-
EPCQ64ASI16N
Intel
-
EPCQ128ASI16N
Intel
-
AT17LV512A-10JU
Microchip Technology
-
AT17LV512-10JU
Microchip Technology
-
AT17LV010-10JU
Microchip Technology
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