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AMD XC17256ELVO8I
- Part No.:
- XC17256ELVO8I
- Manufacturer:
- AMD
- Category:
- Configuration PROMs for FPGAs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
XC17256ELVO8I.pdf
- Description:
- IC PROM SER I-TEMP 256K 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,583
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Product details
Overview
XC17256ELVO8I from AMD is a 256-kbit serial configuration PROM designed for Xilinx FPGA configuration storage, featuring 5V operation, 10 MHz max clock frequency, 150 ns access time, and industrial temperature range (–40°C to +85°C). It serves as nonvolatile configuration memory in Spartan and Virtex FPGA-based systems.
For engineers reviewing the XC17256ELVO8I datasheet, pinout, applications, or equivalent options, key selection criteria include voltage compatibility with legacy 5V FPGA configuration interfaces, read timing compliance for Xilinx bitstream loading sequences, and industrial-grade reliability for embedded control and test equipment.
Technical Context
This device implements a synchronous serial interface compatible with Xilinx FPGA master mode configuration protocols, supporting both cascade and parallel configuration topologies. It uses NMOS technology with TTL-compatible I/O and includes internal address counters for sequential read operations.
Configuration data is stored in EPROM cells programmed via UV erasure and high-voltage programming - not electrically reprogrammable in-system. The device requires external VPP (12.5V) for programming and UV exposure for full erase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 256 kbit (32 k × 8), sufficient to store full configuration bitstreams for early Xilinx Spartan-1 and Virtex-E FPGAs. |
| Supply Voltage | 5.0 V ±10%, matches legacy 5V FPGA configuration I/O voltage domains without level shifting. |
| Max Clock Frequency | 10 MHz, aligns with Xilinx FPGA configuration clock limits for reliable bitstream loading. |
| Access Time | 150 ns, ensures setup/hold timing margins for FPGA configuration controller sampling windows. |
| Operating Temp | –40°C to +85°C, supports industrial environments including factory automation and test instrumentation. |
| Programming Voltage | VPP = 12.5 V, required for EPROM cell programming; not compatible with in-system programmable flash devices. |
Pinout & Package
XC17256ELVO8I is housed in an 8-pin SOIC package (SO-8) with standard dual-in-line pin spacing and gull-wing leads. Pin functions are fully compatible with Xilinx's XC1700 family pinout definition.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable (active-low) | Enables device output drivers; must be asserted low during FPGA configuration read cycles. |
| OE# | Output Enable (active-low) | Gates data output; synchronized with CLK edge in master-mode configuration interface. |
| CLK | Serial Clock Input | Drives internal address counter and controls data output timing per Xilinx configuration protocol. |
| DATA | Serial Data Output | Provides configuration bitstream MSB-first on falling CLK edge; open-drain compatible. |
| VCC | Power Supply | +5 V supply; decoupling capacitor required within 1 cm of pin per Xilinx layout guidelines. |
| GND | Ground | Reference return path for all I/O and internal logic; must connect to FPGA system ground plane. |
| VPP | Programming Voltage | 12.5 V input required only during UV-erased device programming; left unconnected during normal operation. |
| NC | No Connect | Pin 8 is internally unused and must remain floating or tied to GND per AMD/Xilinx design rules. |
Key Features
| Feature | Design Value |
|---|---|
| UV-Erasable EPROM Technology | Enables one-time field programming after UV erasure; suitable for fixed, validated FPGA configurations requiring long-term bitstream stability. |
| Xilinx Configuration Protocol Compliance | Fully supports Xilinx FPGA master-mode serial configuration handshake, eliminating need for custom interface logic or firmware adaptation. |
| Industrial Temperature Range | Guarantees reliable read operation across –40°C to +85°C, enabling use in uncontrolled ambient environments like motor drives and PLC backplanes. |
| TTL-Compatible I/O | Direct interfacing with 5V FPGA configuration pins without level translators or pull-up resistors in legacy designs. |
Applications
| Industrial PLC Configuration Storage | Automated Test Equipment (ATE) Bitstream Loader |
|---|---|
Use Scenario: Storing fixed FPGA configuration for real-time I/O control logic in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Nonvolatile serial PROM providing deterministic bitstream delivery at power-on reset, synchronized to FPGA configuration clock. Use Value: Eliminates boot-time configuration errors and ensures repeatable startup behavior across thousands of operational cycles. | Use Scenario: Loading verified test pattern generation logic into Xilinx FPGAs used in semiconductor wafer probe stations. IC Role / Device Role / Timing Role: Configuration memory delivering bitstream under precise timing control from ATE controller, meeting sub-microsecond setup/hold requirements. Use Value: Guarantees zero-bit-error configuration transfer critical for nanosecond-level signal integrity validation. |
| Legacy Avionics FPGA Initialization | Factory Calibration System Firmware Store |
Use Scenario: Bootstrapping radiation-tolerant FPGA logic in older avionics subsystems where 5V supply and UV-erasable NVM are mandated by DO-254 design heritage. IC Role / Device Role / Timing Role: Trusted configuration source with known failure modes and lifetime characteristics, integrated into certified hardware baselines. Use Value: Meets traceability and requalification requirements for safety-critical airborne electronics without redesign. | Use Scenario: Holding calibration coefficient tables and sensor compensation algorithms in production-line calibration fixtures using Spartan-2 FPGAs. IC Role / Device Role / Timing Role: Read-only configuration memory preserving golden reference data across fixture reboots and maintenance cycles. Use Value: Prevents accidental overwrites and maintains metrological traceability of calibration parameters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA configuration memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCF02SVO20C | 2 Mbit serial PROM, 3.3 V operation, in-system programmable (ISP) flash, no VPP required. | Supports newer 3.3 V FPGAs and field updates; incompatible with 5V-only legacy systems. | Select when upgrading to Spartan-3 or later FPGAs and requiring reprogrammability. |
| XC1764ELVO8I | 64 kbit capacity, same 5V/12.5V VPP/industrial temp SO-8 package and pinout. | Lower density; suitable only for smaller FPGA configurations or partial reconfiguration partitions. | Choose for cost-sensitive applications with minimal bitstream size and identical board footprint. |
Compared with XC17256ELVO8I, XCF02SVO20C enables field updates but requires voltage translation in 5V systems, while XC1764ELVO8I shares full pin and timing compatibility but lacks capacity for larger Spartan/Virtex bitstreams.
Availability
XC17256ELVO8I is available at Aetrix Electronics and suitable for industrial PLCs, automated test equipment, and legacy avionics systems requiring stable component supply and long-lifecycle support.
Supply support for XC17256ELVO8I 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 (acquired Xilinx configuration PROM business in 2022) designs high-reliability programmable logic support components for aerospace, industrial, and test applications.
The XC17xx series was originally developed by Xilinx to provide standardized, pin-compatible configuration memory for early FPGA families, emphasizing long-term bitstream integrity and industrial environmental resilience.
FAQ
What is the programming method for XC17256ELVO8I?
XC17256ELVO8I uses ultraviolet (UV) erasure followed by high-voltage (12.5 V VPP) parallel programming. It is not electrically erasable or in-system programmable. Programming requires a dedicated EPROM programmer and UV eraser; once programmed, it retains data for 20+ years at 25°C. XC17256ELVO8I must be removed from the circuit for reprogramming.
Is XC17256ELVO8I compatible with modern Xilinx FPGA families?
No, XC17256ELVO8I is designed specifically for legacy Xilinx Spartan-1, Spartan-XL, and Virtex-E FPGAs. It does not support 7-series, UltraScale, or Versal devices, which require QSPI flash or BPI NOR interfaces. XC17256ELVO8I remains viable only in maintained legacy systems where original configuration architecture is preserved.
Can XC17256ELVO8I operate at 3.3 V?
No, XC17256ELVO8I requires a nominal 5.0 V supply (±10%) and is not rated for 3.3 V operation. Attempting to power XC17256ELVO8I at 3.3 V results in undefined read behavior and potential data corruption. XC17256ELVO8I must be used in 5V systems or with level-shifting circuitry if interfaced to 3.3V FPGAs - though such use violates Xilinx timing specifications.
What is the role of the NC pin on XC17256ELVO8I?
Pin 8 of XC17256ELVO8I is designated NC (No Connect) and is not bonded internally. Per AMD/Xilinx design guidelines, it must remain unconnected or be tied to GND - never driven or pulled high. Leaving it floating is acceptable, but grounding improves noise immunity in high-EMI industrial environments. XC17256ELVO8I functionality is unaffected either way.
Does XC17256ELVO8I support daisy-chain configuration?
Yes, XC17256ELVO8I supports cascaded (daisy-chain) configuration when multiple devices are used to store extended bitstreams. The DATA output connects to the DATA input of the next PROM in chain, with shared CLK and CE# signals. XC17256ELVO8I includes internal address wraparound logic to enable seamless multi-device readout under Xilinx master-mode control.
XC17256ELVO8I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- OTP
- Memory Size:
- 256Kb
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSOP
XC17256ELVO8I FAQ
1.How can I place an order for XC17256ELVO8I through Aetrix?
Please submit a Request for Quotation (RFQ) for XC17256ELVO8I 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 XC17256ELVO8I reliable?
The price and inventory of XC17256ELVO8I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC17256ELVO8I is usually 5 days.
3.What payment methods are accepted for XC17256ELVO8I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC17256ELVO8I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC17256ELVO8I?
XC17256ELVO8I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC17256ELVO8I 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 XC17256ELVO8I?
For technical support, including XC17256ELVO8I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC17256ELVO8I requirements.
6.How does Aetrix verify that XC17256ELVO8I is sourced from the original manufacturer or authorized distributors?
All XC17256ELVO8I 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 XC17256ELVO8I meets industry standards.
7.What is the process for return or replacement of XC17256ELVO8I?
All XC17256ELVO8I units undergo pre-shipment inspection (PSI). If there is an issue with XC17256ELVO8I, 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 XC17256ELVO8I part is unused and in its original packaging.
Return procedure for XC17256ELVO8I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XC17256ELVO8I Tags
-
AT17LV512A-10PU
Microchip Technology
-
EPCQ4ASI8N
Intel
-
AT17LV256-10PU
Microchip Technology
-
AT17LV256-10NU
Microchip Technology
-
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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