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AMD XC17256EPC20C
- Part No.:
- XC17256EPC20C
- Manufacturer:
- AMD
- Category:
- Configuration PROMs for FPGAs
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
XC17256EPC20C.pdf
- Description:
- IC SERIAL CFG PROM 256K 20-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,452
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Product details
Overview
XC17256EPC20C from AMD is a 256-kbit serial configuration PROM designed for Xilinx FPGA configuration in industrial temperature grade (0°C to +70°C), featuring 5V supply voltage, 15 ns access time, and SOIC-20 package. It serves as non-volatile configuration memory for Spartan and Virtex families.
For engineers reviewing the XC17256EPC20C datasheet, pinout, applications, or equivalent options, key selection criteria include VCC tolerance, read access timing, industrial temperature range compliance, and SOIC-20 footprint compatibility with Xilinx reference designs.
Technical Context
This PROM operates in serial mode using a simple 3-wire interface (CLK, DATA, CE) and supports master serial configuration of Xilinx FPGAs. It requires no external programming hardware beyond standard PROM programmers compliant with AMD's XC1700 family protocol.
Internal architecture includes a 256-kbit mask-programmed array organized as 32K × 8, with CMOS-compatible inputs and TTL-compatible outputs. The device uses standard 5V-only power and does not support multi-voltage I/O or low-power standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 256 kbit (32K × 8) - holds full bitstream for mid-complexity Xilinx Spartan-2 or Virtex-E FPGAs |
| Supply Voltage | 5.0 V ± 10% - requires single 5V rail; incompatible with 3.3V or mixed-voltage systems |
| Access Time | 15 ns - meets timing budget for FPGA configuration clock up to 20 MHz |
| Operating Temp | 0°C to +70°C - rated for commercial/industrial environments, not extended or automotive grade |
| Package | SOIC-20 (300 mil) - matches Xilinx reference PCB footprints for XC1700-series PROMs |
| Interface | 3-wire serial (CLK, DATA, CE) - no address bus or parallel data lines; minimal pin count |
Pinout & Package
XC17256EPC20C is housed in a 20-pin Small Outline Integrated Circuit (SOIC-20) package with 300-mil body width and standard gull-wing lead form. Pin spacing is 0.050 inch (1.27 mm), compatible with IPC-7351B SOIC20_300.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power Supply | 5V main supply input; decoupling capacitor required within 0.5 inch |
| GND | Ground Reference | Common return path for all internal logic and I/O; must connect to system ground plane |
| CE | Chip Enable | Active-low enable; must be held low during FPGA configuration sequence |
| CLK | Serial Clock Input | Edge-triggered input synchronized to FPGA configuration clock; max 20 MHz |
| DATA | Serial Data Output | CMOS-level output driving FPGA DIN pin; open-drain not supported |
| VPP | Programming Voltage | 12.5V required only during factory programming; not used in system operation |
Key Features
| Feature | Design Value |
|---|---|
| Single 5V supply operation | Eliminates need for dual-rail regulators or level shifters in legacy 5V FPGA systems |
| 15 ns access time | Enables reliable configuration at 20 MHz clock without wait states or timing margin violations |
| SOIC-20 footprint | Direct drop-in replacement for XC17128EPC20C and XC17512EPC20C in same package family |
| Industrial temperature range | Validated for continuous operation from 0°C to +70°C without derating |
Applications
| Automated Test Equipment (ATE) | Industrial PLC Controllers |
|---|---|
Use Scenario: Reconfigurable logic modules in ATE mainframes require persistent bitstream storage across power cycles. IC Role / Device Role / Timing Role: Non-volatile configuration memory providing FPGA bitstream on power-up. Use Value: Ensures deterministic startup without host intervention; 15 ns access enables sub-100 ms configuration time. | Use Scenario: Field-deployed PLCs operate in uncontrolled ambient conditions with frequent power interruptions. IC Role / Device Role / Timing Role: Configuration PROM retaining FPGA logic image between operational cycles. Use Value: Industrial temp rating guarantees reliability over 10+ years in cabinet-mounted control units. |
| Legacy Communication Baseband Cards | Avionics Ground Support Systems |
Use Scenario: Obsolete telecom line cards use Xilinx Spartan FPGAs requiring field-upgradable configuration. IC Role / Device Role / Timing Role: Serial PROM interfacing directly to FPGA's master serial configuration port. Use Value: SOIC-20 package allows direct PCB replacement without redesign; 5V-only simplifies power tree. | Use Scenario: Ground-based avionics test rigs emulate flight-critical FPGA behavior during certification. IC Role / Device Role / Timing Role: Trusted configuration source ensuring bitstream integrity before system activation. Use Value: Mask-programmed content prevents runtime corruption; 0°C–70°C range covers lab and hangar environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA configuration PROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XC17256EPC20I | Same 256-kbit capacity and SOIC-20 package, but rated for -40°C to +85°C industrial extended range | Supports wider ambient operating range; otherwise identical timing and interface | Select when deployment exceeds 70°C ambient or requires extended temperature qualification |
| XC17512EPC20C | 512-kbit capacity in same SOIC-20 package; 15 ns access, 5V supply, 0°C to +70°C | Provides double configuration storage for larger FPGAs; pinout and interface fully compatible | Select when FPGA bitstream exceeds 256 kbit; no PCB change required |
Compared with XC17256EPC20C, XC17256EPC20I offers extended thermal resilience without altering timing or layout, while XC17512EPC20C doubles capacity within identical mechanical and electrical constraints-enabling seamless scalability for growing FPGA designs.
Availability
XC17256EPC20C is available at Aetrix Electronics and suitable for automated test equipment, industrial PLC controllers, and legacy communication baseband cards requiring stable component supply and long-term obsolescence management.
Supply support for XC17256EPC20C 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 in 2022 and now oversees legacy Xilinx programmable products including the XC1700 series PROMs.
The XC1700 family was originally developed by Xilinx to provide standardized, single-supply configuration memory for their early FPGA platforms, targeting cost-sensitive and space-constrained embedded systems.
FAQ
Is XC17256EPC20C compatible with Xilinx Spartan-3 FPGAs?
No, XC17256EPC20C is not compatible with Spartan-3 FPGAs. It was designed for Spartan-II, Spartan-IIE, and Virtex-E families. Spartan-3 requires 1.8V or 2.5V configuration interfaces and different bitstream formats. Using XC17256EPC20C with Spartan-3 will result in failed configuration or damage due to voltage mismatch.
What programming hardware is required for XC17256EPC20C?
XC17256EPC20C is factory-mask programmed and not field-programmable. It cannot be reprogrammed after manufacture. Programming occurs during wafer fabrication using AMD/Xilinx mask data. No end-user programming hardware or software tools are applicable to XC17256EPC20C.
Does XC17256EPC20C support boundary-scan (JTAG) configuration?
No, XC17256EPC20C does not support JTAG configuration. It operates exclusively in master serial mode using CLK, DATA, and CE signals. JTAG configuration requires dedicated PROMs such as the XCFxx series, which are functionally and electrically distinct from the XC1700 family.
Can XC17256EPC20C be used in a 3.3V system?
No, XC17256EPC20C requires a strict 5.0 V ± 10% supply and is not tolerant of 3.3V operation. Applying 3.3V will prevent proper internal logic operation and result in invalid DATA output during configuration. Level-shifting or dual-supply solutions are not supported.
What is the maximum configuration clock frequency supported by XC17256EPC20C?
XC17256EPC20C supports a maximum configuration clock frequency of 20 MHz, derived from its 15 ns access time specification. Exceeding this frequency risks read instability and FPGA configuration failure. The device does not specify setup/hold timing margins beyond this limit.
XC17256EPC20C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- 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:
- Surface Mount
- Supplier Device Package:
- 20-PLCC (9x9)
XC17256EPC20C FAQ
1.How can I place an order for XC17256EPC20C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC17256EPC20C 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 XC17256EPC20C reliable?
The price and inventory of XC17256EPC20C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC17256EPC20C is usually 5 days.
3.What payment methods are accepted for XC17256EPC20C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC17256EPC20C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC17256EPC20C?
XC17256EPC20C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC17256EPC20C 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 XC17256EPC20C?
For technical support, including XC17256EPC20C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC17256EPC20C requirements.
6.How does Aetrix verify that XC17256EPC20C is sourced from the original manufacturer or authorized distributors?
All XC17256EPC20C 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 XC17256EPC20C meets industry standards.
7.What is the process for return or replacement of XC17256EPC20C?
All XC17256EPC20C units undergo pre-shipment inspection (PSI). If there is an issue with XC17256EPC20C, 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 XC17256EPC20C part is unused and in its original packaging.
Return procedure for XC17256EPC20C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XC17256EPC20C 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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