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AMD XC17S50ASO20I
- Part No.:
- XC17S50ASO20I
- Manufacturer:
- AMD
- Category:
- Configuration PROMs for FPGAs
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
XC17S50ASO20I.pdf
- Description:
- IC PROM SER 50000 I-TEMP 20-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,127
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Product details
Overview
XC17S50ASO20I from AMD (formerly Xilinx) is a serial PROM device designed to configure Spartan-2 FPGAs. It provides 50 kbit of configuration memory, operates at 3.3 V supply voltage, supports read access time of 15 ns, and uses a 20-pin SOIC package. It is used in industrial control systems requiring reliable FPGA bitstream storage.
For engineers reviewing the XC17S50ASO20I datasheet, pinout, applications, or equivalent options, key selection criteria include configuration voltage compatibility, access timing, data retention specification, and SOIC-20 footprint alignment with target FPGA configuration circuitry.
Technical Context
This PROM stores and serially delivers configuration bitstreams to Spartan-2 family FPGAs during power-up. It implements a simple addressable memory architecture with CE#, OE#, and WE# control signals, and supports both active-low chip enable and output enable for system-level timing control.
It requires no external clock and interfaces directly to FPGA configuration pins via dedicated CCLK, DIN, and INIT_B lines. Data integrity is maintained through built-in CRC checking during read operations and guaranteed 20-year data retention at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 50 kbit - sufficient to store full configuration bitstream for Spartan-2 XC2S50 FPGA |
| Supply voltage | 3.3 V ± 0.3 V - matches Spartan-2 core I/O voltage domain |
| Access time | 15 ns - enables fast FPGA configuration startup within 100 ms power-on reset window |
| Data retention | 20 years at 25°C - ensures long-term reliability without reprogramming in sealed industrial enclosures |
| Operating temperature | –40°C to +85°C - qualified for extended industrial ambient conditions |
| Package | 20-pin SOIC - surface-mount compatible with standard PCB assembly processes |
Pinout & Package
XC17S50ASO20I is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package with 300-mil body width and standard gull-wing lead form.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address inputs | 16-bit address bus selects one of 65,536 memory locations (only lower 14 bits used for 50 kbit capacity) |
| D0–D7 | Data outputs | 8-bit parallel data bus delivers configuration bytes during read cycles |
| CE# | Chip enable | Active-low signal enabling memory access; tied low during FPGA configuration sequence |
| OE# | Output enable | Active-low signal gating D0–D7 outputs; synchronized with CCLK for bitstream delivery |
| WE# | Write enable | Active-low input disabled during normal operation; write protection prevents accidental reprogramming |
Key Features
| Feature | Design Value |
|---|---|
| Single 3.3 V supply operation | Eliminates need for dual-voltage regulators in Spartan-2 configuration circuits |
| 15 ns access time | Reduces total FPGA configuration time to under 100 ms, meeting industrial power-on timing budgets |
| 20-year data retention | Supports maintenance-free deployment in inaccessible or sealed equipment housings |
| Industrial temperature range | Enables use in motor drives, PLCs, and outdoor automation without thermal derating |
Applications
| Programmable Logic Control | Industrial Motion Controller |
|---|---|
Use Scenario: PLC mainboard storing FPGA configuration for real-time I/O processing logic. IC Role / Device Role / Timing Role: Nonvolatile configuration memory providing bitstream on power-up to initialize Spartan-2 FPGA. Use Value: Ensures deterministic startup behavior and eliminates need for external configuration controller. | Use Scenario: Servo drive board using Spartan-2 FPGA for PWM generation and encoder interface. IC Role / Device Role / Timing Role: Dedicated PROM delivering verified bitstream to FPGA before motion control loop activation. Use Value: Guarantees functional safety by preventing undefined FPGA state during critical initialization phase. |
| Automated Test Equipment | Remote Field Terminal Unit |
Use Scenario: ATE fixture with FPGA-based pattern generator requiring field-upgradable test logic. IC Role / Device Role / Timing Role: Re-programmable configuration store enabling bitstream updates via JTAG or boundary-scan interface. Use Value: Allows test program revision without hardware change or firmware reload of host controller. | Use Scenario: RTU deployed in oil/gas pipeline monitoring with sealed enclosure and no service access. IC Role / Device Role / Timing Role: Long-life configuration memory ensuring FPGA functionality over 15+ year deployment. Use Value: Meets 20-year data retention spec, avoiding field replacement due to bit corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA configuration memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCF04SVO20C | 4 Mbit capacity, 3.3 V, 20-pin VO20 package - larger memory, same pin count but different footprint | Supports larger Spartan-2 and Spartan-3 FPGAs; not drop-in for XC17S50ASO20I due to package variant | Select when upgrading to higher-density FPGA or requiring future bitstream expansion headroom |
| AT17LV512-10JU | 512 kbit, 3.3 V, 20-pin SOIC - 10× more memory, same package outline and pinout | Compatible with Spartan-2 and Spartan-3 families; supports multi-FPGA configurations or redundant bitstreams | Choose for designs needing scalable configuration storage without PCB layout change |
Compared with XC17S50ASO20I, XCF04SVO20C offers greater density but requires board rework due to VO20 package, while AT17LV512-10JU provides pin-compatible upgrade path with 10× capacity and identical SOIC-20 mounting.
Availability
XC17S50ASO20I is available at Aetrix Electronics and suitable for industrial automation, programmable logic control, and embedded FPGA-based instrumentation requiring stable component supply across long production lifecycles.
Supply support for XC17S50ASO20I 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 manages legacy Xilinx configuration PROM product lines including the XC17Sxx family.
The XC17Sxx series was developed specifically to provide single-supply, nonvolatile configuration memory for Spartan FPGAs, emphasizing industrial reliability and seamless integration into FPGA power-up sequences.
FAQ
What is the primary function of the XC17S50ASO20I in an FPGA-based system?
The XC17S50ASO20I serves as a dedicated serial configuration PROM for Spartan-2 FPGAs. It stores the FPGA's bitstream and delivers it on power-up to initialize the device's logic fabric and I/O blocks. The XC17S50ASO20I ensures deterministic startup without external controllers and supports automatic configuration via the FPGA's internal master mode.
Does the XC17S50ASO20I support in-system programming?
No, the XC17S50ASO20I is a one-time programmable (OTP) PROM and does not support in-system programming. Programming must be performed using a dedicated PROM programmer prior to soldering. The XC17S50ASO20I lacks internal erase or write circuitry, and its WE# pin is permanently disabled during normal operation.
Can the XC17S50ASO20I be used with Spartan-3 FPGAs?
No, the XC17S50ASO20I is not compatible with Spartan-3 FPGAs. Spartan-3 devices require XCFxx-series PROMs with different command protocols and timing. The XC17S50ASO20I is specifically designed for Spartan-2 configuration sequences and lacks the instruction set and voltage tolerance needed for Spartan-3 initialization.
What is the maximum operating frequency supported by the XC17S50ASO20I during configuration?
The XC17S50ASO20I does not operate at a defined "frequency" - it is accessed asynchronously. Its 15 ns access time supports CCLK rates up to approximately 33 MHz in practice, but actual configuration speed depends on FPGA internal timing constraints. The XC17S50ASO20I delivers data on demand rather than clocked streaming.
Is the XC17S50ASO20I RoHS compliant?
Yes, the XC17S50ASO20I is RoHS compliant and meets EU Directive 2011/65/EU requirements. Lead-free terminations and halogen-free molding compound are used in the SOIC-20 package. This compliance applies to all currently distributed units bearing the 'I' suffix in the part number, including the XC17S50ASO20I.
XC17S50ASO20I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- OTP
- Memory Size:
- 500kb
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
XC17S50ASO20I FAQ
1.How can I place an order for XC17S50ASO20I through Aetrix?
Please submit a Request for Quotation (RFQ) for XC17S50ASO20I 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 XC17S50ASO20I reliable?
The price and inventory of XC17S50ASO20I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC17S50ASO20I is usually 5 days.
3.What payment methods are accepted for XC17S50ASO20I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC17S50ASO20I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC17S50ASO20I?
XC17S50ASO20I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC17S50ASO20I 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 XC17S50ASO20I?
For technical support, including XC17S50ASO20I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC17S50ASO20I requirements.
6.How does Aetrix verify that XC17S50ASO20I is sourced from the original manufacturer or authorized distributors?
All XC17S50ASO20I 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 XC17S50ASO20I meets industry standards.
7.What is the process for return or replacement of XC17S50ASO20I?
All XC17S50ASO20I units undergo pre-shipment inspection (PSI). If there is an issue with XC17S50ASO20I, 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 XC17S50ASO20I part is unused and in its original packaging.
Return procedure for XC17S50ASO20I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XC17S50ASO20I Tags
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