My Inquiry
My Account
Microchip Technology AT17LV256-10JI
- Part No.:
- AT17LV256-10JI
- Manufacturer:
- Microchip Technology
- Category:
- Configuration PROMs for FPGAs
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
AT17LV256-10JI.pdf
- Description:
- IC SRL CONFG EEPROM 256K 20-PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,064
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT17LV256-10JI from Microchip Technology (formerly Atmel) is a 256-Kbit serial EEPROM FPGA configuration memory, supporting both 3.3V and 5.0V operation, with in-system programmability via two-wire bus, programmable reset polarity, and cascading capability for multi-FPGA systems. It targets industrial-grade FPGA configuration in SRAM-based logic designs.
For engineers reviewing the AT17LV256-10JI datasheet, AT17LV256-10JI pinout, AT17LV256-10JI application, or AT17LV256-10JI equivalent, key selection criteria include industrial temperature range (−40°C to +85°C), 20-lead PLCC package compatibility, cascading CEO support, low-power standby (<100 µA at 3.3V), and verified interoperability with Xilinx XC4000/XC5200, Altera FLEX/APEX, and Atmel AT40K/AT94K FPGAs.
Technical Context
The AT17LV256-10JI operates in Master Serial mode, directly interfacing with FPGA CCLK and DIN pins using synchronous serial protocol. Its address counter auto-resets on power-up and RESET/OE assertion, enabling deterministic configuration sequencing without external controller intervention.
It supports dual-voltage operation (3.3V ±10% or 5.0V ±5%/±10%), features open-collector DATA output with tri-state control via CE and RESET/OE, and implements write protection via dedicated WP pin - active only during programming (SER_EN = Low) and disabled by default due to internal pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 256 Kbit (262,144 × 1-bit), sufficient to configure mid-density SRAM FPGAs like Xilinx XC4010E or Altera EPF10K10. |
| Operating voltage | 3.3 V ±10% or 5.0 V ±5% (commercial) / ±10% (industrial); enables drop-in replacement across legacy 5V and modern 3.3V FPGA systems. |
| Temperature range | Industrial: −40°C to +85°C; ensures reliable boot-time configuration in harsh embedded environments such as industrial automation controllers. |
| Standby current | <100 µA at 3.3V (industrial); minimizes system-level quiescent power when FPGA is unpowered or held in reset. |
| Write endurance | 100,000 write cycles; supports field firmware updates and reconfiguration during product lifecycle without wear-out risk. |
| Data retention | 90 years at 85°C (industrial grade); guarantees configuration integrity over full product service life in high-temperature deployments. |
| Max clock frequency | 10 MHz at 3.3V (industrial); aligns with standard FPGA CCLK timing budgets for XC4000-series and compatible devices. |
Pinout & Package
AT17LV256-10JI is packaged in a 20-lead Plastic Leaded Chip Carrier (PLCC) with 1.27 mm lead pitch, JEDEC MS-018 compliant, footprint dimensions 10.0 mm × 10.0 mm × 3.9 mm (max height), and lead coplanarity ≤ 0.102 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 6–9, 11–13, 15–17, 19–20 | NC (No Connect) | Not bonded internally; must be left unconnected per design rules to avoid signal integrity or ESD risks. |
| 5 | CLK | Clock input; synchronizes internal address/bit counter and data output timing; driven by FPGA CCLK. |
| 10 | GND | Ground reference; requires local 0.2 µF decoupling capacitor to VCC for stable read/write margins. |
| 14 | CEO | Chip Enable Output (active Low); signals end-of-data to next cascaded AT17LV device; essential for daisy-chain configurations. |
| 18 | VCC | Power supply; accepts 3.3V or 5V; must be filtered and routed with low-inductance path to GND. |
| DATA (Pin 1) | I/O | Open-collector bidirectional data line; drives FPGA DIN during configuration; pulled up externally (typically 4.7 kΩ). |
| RESET/OE (Pin 3) | Input | Combined reset (active Low) and output enable (active High); polarity programmable; controls DATA driver and address counter reset. |
| CE (Pin 4) | Input | Chip Enable (active Low); enables CLK-driven addressing and DATA output; forces standby mode when High. |
| SER_EN (Pin 7) | Input | Serial Enable; must be tied to VCC for FPGA loading; pulled Low to enter two-wire ISP programming mode. |
| WP (Pin 6) | Input | Write Protect; disables lowest memory block when High during programming; internal pull-down defaults to unprotected state. |
Key Features
| Feature | Design Value |
|---|---|
| In-system programmability | Enables field firmware updates via two-wire interface without removing device from PCB; eliminates need for socketed programming fixtures. |
| Cascadable CEO output | Allows daisy-chaining multiple AT17LV devices to support larger FPGA bitstreams or multi-FPGA boards without external logic. |
| Programmable reset polarity | Supports both active-Low RESET and active-High OE modes via EEPROM byte programming; matches diverse FPGA vendor requirements. |
| Dual-voltage compatibility | Operates natively at 3.3V or 5V with no level-shifting components required; simplifies migration from legacy 5V to modern low-voltage FPGA platforms. |
| Low-power standby | Consumes <100 µA at 3.3V industrial; reduces system power budget during FPGA sleep or configuration hold states. |
Applications
| Industrial PLC Configuration | Xilinx XC4000-Series Boot Memory |
|---|---|
Use Scenario: Configuring SRAM-based FPGAs in programmable logic controllers deployed in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary configuration memory providing deterministic, single-shot bitstream load at power-on or cold reset. Use Value: 90-year data retention at 85°C ensures configuration persistence over 10+ year equipment lifecycles without refresh. | Use Scenario: Storing XC4010E/XC4020E configuration bitstreams in test and validation hardware for aerospace avionics subsystems. IC Role / Device Role / Timing Role: Master Serial mode configurator synchronized to FPGA CCLK; delivers bitstream at up to 10 MHz under industrial conditions. Use Value: Pin-compatible support for Xilinx XC4000 family eliminates redesign when upgrading from AT17LV128 to AT17LV256 for larger logic density. |
| Altera FLEX10K Daisy-Chain Systems | Atmel AT40KAL Field-Upgradeable Logic |
Use Scenario: Cascading three AT17LV256-10JI devices to configure a multi-FPGA board hosting Altera EPF10K20RC240 devices in telecom baseband processing. IC Role / Device Role / Timing Role: Chain-configured EEPROMs where CEO of upstream device drives CE of downstream device to extend effective memory capacity. Use Value: CEO propagation delay ≤60 ns (industrial, 3.3V) ensures seamless handoff between devices without clock stretching or timing violations. | Use Scenario: Enabling field reprogramming of AT40KAL-based motor control gate drivers via in-system programming cable (ATDH2225). IC Role / Device Role / Timing Role: In-system programmable configuration store allowing remote bitstream updates without hardware access or power cycle. Use Value: Two-wire ISP mode (SER_EN = Low) permits reconfiguration using minimal GPIO resources on host microcontroller. |
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 capacity; 3.3V-only operation; no 5V support; different pinout (20-pin SOIC vs. 20-pin PLCC); lacks programmable reset polarity. | Targeted at Xilinx-only ecosystems requiring higher density; not suitable for mixed-voltage or Atmel/Altera multi-FPGA designs. | Select only if migrating fully to Xilinx platform and needing >256 Kbit capacity; verify PCB layout change for SOIC footprint and voltage regulator compatibility. |
| Microchip (Atmel) AT17LV512-10JI | 512-Kbit capacity; same 20-lead PLCC package; identical pinout and timing; supports same voltage ranges and industrial temp grade. | Direct upgrade path for larger FPGA bitstreams (e.g., XC4044E or EPF10K30); retains all interface and cascade functionality. | Choose when future-proofing for higher-density FPGAs; no PCB or firmware changes required beyond EEPROM programming file update. |
Compared with XC18V02 and AT17LV512-10JI, the AT17LV256-10JI provides optimal balance of industrial reliability, dual-voltage flexibility, and PLCC footprint compatibility for mid-range SRAM FPGA configurations-making it ideal for cost-sensitive, long-lifecycle industrial control and communications hardware.
Availability
AT17LV256-10JI is available at Aetrix Electronics and suitable for industrial automation, telecommunications infrastructure, and aerospace avionics requiring stable component supply, long-term data retention, and proven FPGA configuration interoperability.
Supply support for AT17LV256-10JI 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 series.
The AT17LV product line was designed specifically to provide robust, low-cost, serial configuration memory for SRAM-based FPGAs from Xilinx, Altera, and Atmel-emphasizing industrial reliability, in-system programmability, and cascading scalability.
FAQ
What is the operating temperature range for the AT17LV256-10JI?
The AT17LV256-10JI is rated for industrial operation from −40°C to +85°C. This range is validated per JEDEC JESD22-A108 and ensures reliable power-on configuration and data retention under extended thermal stress, making it suitable for deployment in uncontrolled environments such as factory floors or outdoor telecom cabinets. The AT17LV256-10JI maintains full AC/DC specifications across this entire range.
Does the AT17LV256-10JI support in-system programming (ISP)?
Yes, the AT17LV256-10JI supports in-system programming via its two-wire serial interface when SER_EN is driven Low. This mode allows field updates using industry-standard programmers or Atmel's ATDH2225 ISP Cable. During ISP, the device accepts commands over CLK and DATA lines while VCC remains at nominal voltage-no high-voltage programming pulses are required, as internal charge pumps generate necessary programming voltages.
Can the AT17LV256-10JI be used with Xilinx Virtex FPGAs?
No, the AT17LV256-10JI is not compatible with Xilinx Virtex FPGAs. It is explicitly qualified for Xilinx XC3000, XC4000, and XC5200 families in Master Serial mode. Virtex devices require different configuration protocols (e.g., SelectMAP or JTAG) and higher-speed interfaces unsupported by the AT17LV256-10JI's 10 MHz max clock rate and serial-only architecture. Use Xilinx Platform Flash PROMs (e.g., XCFxx) for Virtex configuration.
What is the function of the CEO pin on the AT17LV256-10JI?
The CEO (Chip Enable Output) pin on the AT17LV256-10JI is an active-Low open-collector signal that asserts when the internal address counter reaches its maximum value (end-of-memory). In cascaded configurations, CEO of one AT17LV256-10JI drives the CE pin of the next device, enabling automatic handoff of configuration data. This eliminates external glue logic and ensures deterministic multi-device sequencing without FPGA intervention.
Is the AT17LV256-10JI RoHS compliant?
Yes, the AT17LV256-10JI is RoHS compliant and halide-free. It meets EU Directive 2011/65/EU and is manufactured with Pb-free terminations and green packaging materials. The "J" in the part number denotes 20-lead PLCC packaging, and the industrial temperature grade ("I") confirms compliance with environmental standards for industrial applications. Full material declarations are available in Microchip's PPAP documentation.
AT17LV256-10JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-PLCC (9x9)
AT17LV256-10JI FAQ
1.How can I place an order for AT17LV256-10JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT17LV256-10JI 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 AT17LV256-10JI reliable?
The price and inventory of AT17LV256-10JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT17LV256-10JI is usually 5 days.
3.What payment methods are accepted for AT17LV256-10JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT17LV256-10JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT17LV256-10JI?
AT17LV256-10JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT17LV256-10JI 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 AT17LV256-10JI?
For technical support, including AT17LV256-10JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT17LV256-10JI requirements.
6.How does Aetrix verify that AT17LV256-10JI is sourced from the original manufacturer or authorized distributors?
All AT17LV256-10JI 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 AT17LV256-10JI meets industry standards.
7.What is the process for return or replacement of AT17LV256-10JI?
All AT17LV256-10JI units undergo pre-shipment inspection (PSI). If there is an issue with AT17LV256-10JI, 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 AT17LV256-10JI part is unused and in its original packaging.
Return procedure for AT17LV256-10JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT17LV256-10JI 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
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
