EP1K50FI256-2AA - ACEX 1K FPGA, 186 I/O | Intel
MPN: EP1K50FI256-2AA ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.8 | $24.80 |
| 10 | $21.9 | $219.00 |
| 100 | $18.7 | $1,870.00 |
| 500 | $16.9 | $8,450.00 |
| 1,000 | $15.4 | $15,400.00 |
Drop-in alternatives for EP1K50FI256-2AA — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EP1K50FI256-2
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✅ Drop-In ⚠️ 参数待验证✓ In Stock
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✅ Drop-In ⚠️ 参数待验证✓ In Stock
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View Datasheet →EP1K50FC256-1N
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View Datasheet →EP1K50FI256-2AA Maximum Ratings & Electrical Characteristics
| Product Family | ACEX 1K |
| Part Status | Obsolete |
| Number of LABs/CLBs | 360 |
| Number of Logic Elements/Cells | 2880 |
| Total RAM Bits | 40960 |
| Number of I/O | 186 |
| Number of Gates | 199000 |
| Supply Voltage | 2.375V ~ 2.625V |
| Core Voltage Nominal | 2.5V |
| Operating Temperature | -40C ~ 85C (TA) |
| Package / Case | 256-BBGA |
| Mounting Type | Surface Mount |
| Process Technology | 0.22um CMOS |
| Maximum Internal Frequency | 200 MHz |
| Speed Grade | -2 |
EP1K50FI256-2AA 256-bbga Pin Configuration Guide
Complete pinout information for EP1K50FI256-2AA (256-bbga package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EP1K50FI256-2AA.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
EP1K50FI256-2AA is suitable for 6 applications: Industrial Control and Automation Interface, Telecom Line Card Bridging and Protocol Glue, Video and Image Frame Buffer Control, Automotive Test and Measurement Equipment, Medical Equipment Legacy Board Repair, Education and FPGA Architecture Prototyping.
Industrial Control and Automation Interface
The EP1K50FI256-2AA is an industrial-temperature FPGA with 186 user I/O pins and 2880 logic elements, making it practical for machine-control interfaces, sensor scaling, and PLC glue logic. Its -40C to +85C operating range matches factory floors, outdoor cabinets, and unheated equipment rooms where commercial FPGAs may not be reliable. The 360 LABs can implement state machines, parallel bus decoding, and simple PID or PWM control loops while the 186 I/O at 2.5 V-era levels interface to optocouplers, line drivers, and peripheral controllers. Designers should remember that ACEX 1K is SRAM-based and needs a configuration source such as an EPC configuration device at every power-up. The wide 2.375 V to 2.625 V core range also accepts moderately noisy industrial 2.5 V rails if properly decoupled.
Recommended
Telecom Line Card Bridging and Protocol Glue
The EP1K50FI256-2AA fits line-card applications that need a non-blocking bridge between TDM buses, UTOPIA ports, and local control processors. With 40960 bits of embedded RAM, designers can implement small FIFOs, packet counters, and address translation tables without external SRAM. The 186-pin 256-ball BGA package keeps board area low while providing enough pins for multiple 8-bit or 16-bit microprocessor buses. The 2.5 V core is compatible with common transceivers and PHY devices from the same voltage generation, and the ACEX 1K embedded array supports efficient RAM-based functions. For legacy telecom repair, it is especially useful because the EP1K50 density can absorb many functions previously split across several PLDs, but configuration EPC memory and exact timing constraints must still be maintained.
Recommended
Video and Image Frame Buffer Control
A 256-ball FPGA with 186 I/O and 40960 bits of on-chip RAM is well suited to small video and image-processing boards where designers need to capture a parallel pixel bus, insert sync timing, or drive an LCD controller. The EP1K50FI256-2AA can perform simple line buffering, windowing, or pixel format conversion in logic while its embedded array reduces external FIFO requirements. The industrial temperature range supports security cameras, outdoor displays, and machine-vision units installed in production environments. Since the device is obsolete, a legacy video design should preserve the original configuration PROM contents and source a verified date-coded inventory. For lower-voltage modern imagers, additional level shifting may be required because the ACEX core voltage is 2.5 V and I/O standards depend on VCCIO connections.
Recommended
Automotive Test and Measurement Equipment
The EP1K50FI256-2AA can support automotive test benches, ECU fixture controllers, and data-acquisition front ends because it is rated over -40C to +85C and provides 186 flexible I/O pins. Typical functions include capturing sensor signals, generating engine-simulation pulse trains, and interfacing to custom test racks. The 2880 logic elements and 360 LABs allow the FPGA to replace multiple small CPLDs and transceivers on a legacy service board. The industrial temperature grade is especially valuable for test equipment stored in cold warehouses or used in environmental chambers. However, ACEX 1K is not AEC-Q100 qualified, so this device is intended for factory and laboratory test equipment rather than in-vehicle ECU production. Configuration data should be stored redundantly because SRAM-based FPGAs reload at each power cycle.
Recommended
Medical Equipment Legacy Board Repair
Many diagnostic and monitoring systems designed in the 2000s used ACEX 1K FPGAs for timing control, data routing, and interfacing with analog front ends. The EP1K50FI256-2AA is still relevant for repairing these installed systems because its 256-BBGA footprint, 186 I/O, 2880 logic elements, and -40C to +85C rating allow original circuit boards to be restored without redesign. The embedded RAM can store look-up tables and small calibration buffers used by sensor processors, while the logic array supervises ADC readouts and display timing. For medical equipment repair, component authenticity and traceability are critical; buyers should obtain date-coded stock and verify that the FPGA has not been relabeled or sourced from low-reliability brokers. A field-programmable device also needs the correct configuration file for the exact instrument revision.
Recommended
Education and FPGA Architecture Prototyping
University laboratories and engineers learning FPGA architecture still use legacy ACEX 1K boards for basic digital design courses because 2880 logic elements are enough to teach combinational logic, finite-state machines, counters, and simple processor datapaths. The EP1K50FI256-2AA, with 360 LABs, 186 I/O, and 40960 RAM bits, is large enough for meaningful projects but small enough that synthesis is fast. The 256-ball BGA package can be mounted on an evaluation carrier or used with a custom breakout board. Since this part is obsolete, educators should confirm that their Quartus software version supports ACEX 1K and that the laboratory has enough known-good configuration devices. For new coursework, a current low-cost FPGA development board is usually a better long-term investment.
Recommended
Recommended Products Summary
Engineering reference data for EP1K50FI256-2AA — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EP1K50FI256-2 | EP1K50FC256-1 | EP1K50FC256-2 | EP1K50FC256-3 | EP1K50FC256-1N |
|---|---|---|---|---|---|---|
| Package | 256-BBGA | 256-BBGA | 256-BBGA | 256-BBGA | 256-BBGA | 256-BBGA |
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Logic Elements/Cells | 2880 | 2880 | 2880 | 2880 | 2880 | 2880 |
| LABs/CLBs | 360 | 360 | 360 | 360 | 360 | 360 |
| Total RAM Bits | 40960 | 40960 | 40960 | 40960 | 40960 | 40960 |
| User I/O Count | 186 | 186 | 186 | 186 | 186 | 186 |
| Core Supply Voltage | 2.375V to 2.625V | 2.375V to 2.625V | 2.375V to 2.625V | 2.375V to 2.625V | 2.375V to 2.625V | 2.375V to 2.625V |
| Operating Temperature Grade | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +85C (commercial) | 0C to +85C (commercial) | 0C to +85C (commercial) | 0C to +85C (commercial) |
| Speed Grade | -2 | -2 | -1 | -2 | -3 | -1 |
Key Differentiators
- Industrial temperature range in the 256-ball EP1K50 package (vs EP1K50FC256-2)
- Speed grade -2 is faster than the -3 commercial variant (vs EP1K50FC256-3)
- Drop-in compatibility with widely listed EP1K50FI256-2 (vs EP1K50FI256-2)
Design Notes
The EP1K50FI256-2AA is an SRAM-based FPGA and has no non-volatile internal configuration memory. Every power-up must load a configuration bitstream from an EPC configuration device, download cable, or system microprocessor. In legacy boards, verify that the configuration PROM contents match the exact logic revision before replacing the FPGA. If the EP1K50FI256-2AA is obsolete and stock is limited, archive the configuration file, the original CAD project, and the BSDL/pin constraints so that future service or migration is possible.
The core supply must remain within 2.375 V to 2.625 V. Place at least one 0.1 uF ceramic capacitor physically close to every VCC ball and one larger bulk capacitor, typically 10 uF, near the ball field. The VCCIO rails should be decoupled according to the I/O standard used by each bank. When the design has high toggle rates, estimate core current by completing a power analysis in the ACEX 1K design flow rather than relying only on quiescent current values. An obsolete FPGA pulled from surplus should be tested for stand-by current and configuration integrity before production use.
This 256-ball BGA package requires a multilayer PCB with fine-pitch routing. Use the official ACEX 1K datasheet package and pinout diagrams, and generate the pin assignment in the FPGA design tool so the board netlist matches the configured pin report. Provide ground vias close to the package for return currents and keep all configuration pins, especially DCLK and nCONFIG, clean of noise. Because the part is obsolete, saving a copy of the exact board footprint, silkscreen polarity markers, and reflow profile can help rework teams repair systems without redesigning the PCB.
Compliance Information
The verified web data does not include explicit RoHS/REACH/lead-free status for this obsolete ACEX 1K device. The part is not marketed as automotive qualified, so AEC-Q100 is not applicable.
