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Microchip Technology AT17LV256-10SU
- Part No.:
- AT17LV256-10SU
- Manufacturer:
- Microchip Technology
- Category:
- Configuration PROMs for FPGAs
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AT17LV256-10SU.pdf
- Description:
- IC SRL CONFG EEPROM 256K 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,119
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Product details
Overview
AT17LV256-10SU from Microchip Technology (formerly Atmel) is a 256-kbit FPGA configuration EEPROM designed to store and serially load bitstream data into SRAM-based FPGAs. It supports both 3.3V and 5.0V systems, features in-system programmability via 2-wire bus, programmable reset polarity, and low-power standby mode consuming <50 µA at 3.3V. It is used in industrial FPGA-based control systems requiring reliable, nonvolatile configuration storage.
For engineers reviewing the AT17LV256-10SU datasheet, AT17LV256-10SU pinout, AT17LV256-10SU application, or AT17LV256-10SU equivalent, key selection considerations include its 256-kbit density, 20-lead SOIC package, dual-voltage support (3.0–5.5 V), cascading CEO capability, and compatibility with Xilinx XC3000/XC4000/Spartan, Altera FLEX/APEX, and Atmel AT40K/AT94K FPGAs.
Technical Context
The AT17LV256-10SU implements a serial EEPROM architecture optimized for FPGA master serial configuration mode, interfacing directly with FPGA CCLK and DIN pins. Its internal address counter advances on CLK edges, and DATA output is open-collector with tri-state control via CE and RESET/OE.
It supports daisy-chain cascading via CEO output driving CE of the next device, enabling multi-FPGA or high-density configuration. Programming occurs in 2-wire serial mode when SER_EN is low, using internal charge pumps-no external programming voltage required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 262,144 × 1-bit (256 kbit); sufficient to configure mid-range SRAM FPGAs like Xilinx Spartan-3 or Altera Cyclone I. |
| Supply Voltage Range | 3.0 V to 5.5 V; enables direct integration into both 3.3V and 5.0V legacy or mixed-voltage FPGA systems without level-shifting. |
| Operating Temperature | −40°C to +85°C (industrial grade); validated for use in factory automation, motor drives, and outdoor embedded controllers. |
| Standby Current | <50 µA at 3.3V; minimizes system power budget during FPGA configuration hold or idle states. |
| Write Endurance | 100,000 write cycles; supports field firmware updates and reconfiguration during product lifecycle. |
| Data Retention | 90 years at 85°C; ensures long-term reliability in thermally stressed industrial environments without refresh. |
| Max Clock Frequency | 10 MHz at 3.3V / 12.5 MHz at 5.0V; matches typical FPGA CCLK timing requirements for fast configuration loading. |
Pinout & Package
AT17LV256-10SU is packaged in a 20-lead SOIC (20S2), 0.300" wide body, RoHS-compliant, lead-free finish. Pin pitch is 1.27 mm; footprint compatible with JEDEC MS-013 AC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DATA | Bi-directional open-collector I/O | Drives FPGA DIN during configuration; tri-stated when CE high or RESET/OE active; requires external pull-up. |
| CLK | Input | Edge-triggered clock from FPGA CCLK; increments internal address/bit counter for serial readout. |
| RESET/OE | Input (programmable polarity) | Resets address counter and controls DATA driver enable; polarity configurable as active-low RESET or active-high OE. |
| CE | Input (active low) | Enables address counter and DATA output when low; forces low-power standby when high (<50 µA). |
| GND | Power ground | Reference for all signals; requires 0.2 µF decoupling capacitor between VCC and GND per datasheet recommendation. |
| CEO | Output (active low) | Signals end-of-data to next cascaded AT17LV device; enables automatic daisy-chain configuration of multiple FPGAs or larger arrays. |
| SER_EN | Input | High = normal FPGA configuration mode; low = enters 2-wire ISP programming mode (no external HV needed). |
| VCC | Power supply | Accepts 3.0–5.5 V; powers EEPROM core and interface logic; supports mixed-voltage board designs. |
Key Features
| Feature | Design Value |
|---|---|
| In-system programmability (ISP) | Enables field firmware updates via 2-wire serial bus without removing the device; eliminates need for socketed programmers. |
| Cascadable CEO output | Allows seamless daisy-chaining of multiple AT17LV devices to support large FPGAs or multi-FPGA systems without external logic. |
| Programmable reset polarity | Supports both active-low RESET and active-high OE configurations to match diverse FPGA boot requirements. |
| Low-power standby mode | Draws <50 µA at 3.3V when CE is high-critical for battery-backed or energy-sensitive industrial controllers. |
| Green (Pb/Halide-free/RoHS) | Complies with global environmental regulations; uses Sn or CuNiAu lead finish depending on ordering code variant. |
Applications
| Industrial PLC Configuration | FPGA-Based Motor Drive Control |
|---|---|
Use Scenario: Configuring Xilinx Spartan-3 FPGAs in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Serial configuration memory providing bitstream on power-up; synchronized to FPGA CCLK for deterministic load timing. Use Value: Eliminates external microcontroller dependency for FPGA boot; reduces BOM count and improves startup reliability under temperature cycling. | Use Scenario: Storing configuration data for Altera FLEX 10K FPGAs used in closed-loop servo drive modules. IC Role / Device Role / Timing Role: Master serial configurator delivering bitstream at up to 10 MHz; CEO signal coordinates multi-device chain for complex motion profiles. Use Value: Enables rapid reconfiguration for different motor types without hardware change; supports field-upgradable control algorithms. |
| Avionics FPGA Boot Memory | Test Equipment FPGA Initialization |
Use Scenario: Providing certified, radiation-tolerant configuration storage for Atmel AT40KAL FPGAs in airborne data acquisition units. IC Role / Device Role / Timing Role: Nonvolatile configuration source with 90-year data retention at 85°C; operates across −40°C to +85°C without derating. Use Value: Meets DO-254 design assurance requirements for Level A/B hardware; avoids volatile SRAM configuration vulnerability. | Use Scenario: Loading bitstreams into Xilinx XC4000-series FPGAs inside automated test equipment (ATE) platforms. IC Role / Device Role / Timing Role: High-reliability serial EEPROM supporting repeated reconfiguration during test sequence changes. Use Value: Withstands >100,000 write cycles-enables daily test pattern updates over 27+ years of operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA configuration memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Xilinx XC18V02 | 2-Mbit density (8× larger), same 3.3V-only operation, no 5V support; requires external 12V programming voltage. | Targeted at larger FPGAs (e.g., Virtex-II); not drop-in compatible due to voltage and programming interface mismatch. | Select only if higher density and Xilinx-optimized timing are required-and 5V system compatibility is unnecessary. |
| Microchip AT17LV512-10SU | 512-kbit density (2× larger), identical 20-lead SOIC package, same dual-voltage support and CEO cascading capability. | Direct pin-compatible upgrade path for designs needing more configuration space without PCB revision. | Choose when future FPGA upgrades require expanded bitstream capacity while retaining layout and firmware compatibility. |
Compared with XC18V02 and AT17LV512-10SU, the AT17LV256-10SU offers optimal balance of density, dual-voltage flexibility, and industrial-grade reliability for mid-size FPGA configurations-making it ideal for cost-sensitive, thermally demanding, or legacy 5V-compatible systems where 256 kbit suffices.
Availability
AT17LV256-10SU is available at Aetrix Electronics and suitable for industrial PLCs, FPGA-based motor drives, avionics data acquisition units, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT17LV256-10SU 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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel FPGA configuration products including the AT17LV family.
The AT17LV product line was engineered specifically to provide robust, serial, nonvolatile configuration memory for SRAM-based FPGAs-emphasizing ease of integration, cascading scalability, and industrial reliability.
FAQ
What is the memory capacity of the AT17LV256-10SU?
The AT17LV256-10SU provides 262,144 × 1-bit (256 kbit) of EEPROM storage. This capacity is sufficient to configure mid-range SRAM-based FPGAs such as Xilinx Spartan-3, Altera Cyclone I, or Atmel AT40KAL devices. The memory is organized as a single linear array accessed sequentially during FPGA master serial configuration.
Which FPGA families is the AT17LV256-10SU compatible with?
The AT17LV256-10SU is explicitly compatible with Xilinx XC3000, XC4000, XC5200, Spartan®, and Virtex® FPGAs; Altera FLEX® and APEX™ devices; ORCA® FPGAs; and Atmel AT40K, AT40KAL, AT94K, and AT94KAL FPGAs. Compatibility is achieved through direct pin-to-signal mapping (CCLK → CLK, DIN ← DATA) and timing alignment per datasheet AC specifications.
Does the AT17LV256-10SU support in-system programming (ISP)?
Yes, the AT17LV256-10SU supports in-system programming via its 2-wire serial interface when SER_EN is pulled low. Programming occurs at the standard VCC supply voltage (3.3V or 5.0V)-no external high-voltage programmer is required. Internal charge pumps generate necessary programming voltages, enabling field updates without device removal.
What package type does the AT17LV256-10SU use?
The AT17LV256-10SU uses a 20-lead plastic gull-wing small outline integrated circuit (20S2), 0.300" wide body, compliant with JEDEC MS-013 Variation AC. It features 1.27 mm pitch, RoHS-compliant Sn lead finish, and industrial temperature rating (−40°C to +85°C).
Can multiple AT17LV256-10SU devices be cascaded for larger FPGA configurations?
Yes, the AT17LV256-10SU supports daisy-chain cascading using its CEO (Chip Enable Output) pin. When the first device completes data output, CEO goes low to enable the CE input of the next device in the chain. This allows seamless expansion beyond 256 kbit-e.g., two AT17LV256-10SU devices deliver 512 kbit for larger FPGAs-without external logic or controller intervention.
AT17LV256-10SU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Programmable Type:
- Serial EEPROM
- Memory Size:
- 256Kb
- Voltage - Supply:
- 3V ~ 3.6V, 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
AT17LV256-10SU FAQ
1.How can I place an order for AT17LV256-10SU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT17LV256-10SU 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 AT17LV256-10SU reliable?
The price and inventory of AT17LV256-10SU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT17LV256-10SU is usually 5 days.
3.What payment methods are accepted for AT17LV256-10SU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT17LV256-10SU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT17LV256-10SU?
AT17LV256-10SU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT17LV256-10SU 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 AT17LV256-10SU?
For technical support, including AT17LV256-10SU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT17LV256-10SU requirements.
6.How does Aetrix verify that AT17LV256-10SU is sourced from the original manufacturer or authorized distributors?
All AT17LV256-10SU 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 AT17LV256-10SU meets industry standards.
7.What is the process for return or replacement of AT17LV256-10SU?
All AT17LV256-10SU units undergo pre-shipment inspection (PSI). If there is an issue with AT17LV256-10SU, 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 AT17LV256-10SU part is unused and in its original packaging.
Return procedure for AT17LV256-10SU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT17LV256-10SU Tags
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AT17LV512A-10PU
Microchip Technology
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EPCQ4ASI8N
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AT17LV256-10PU
Microchip Technology
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AT17LV256-10NU
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EPCQ16ASI8N
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AT17LV010-10PU
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EPCQ32ASI8N
Intel
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EPCQ64ASI16N
Intel
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EPCQ128ASI16N
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AT17LV512A-10JU
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AT17LV512-10JU
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AT17LV010-10JU
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