Altera

EP1S25F1020C6N - Stratix 25K LE FPGA, 706 I/O, FBGA-1020 | Intel

MPN: EP1S25F1020C6N ✗ End of Life
In Stock Ships in 1-3 business days
1.5 V Vdss 1020-ball FC-FBGA (33 x 33 mm, 1.0 mm pitch) Package 450.05 MHz Speed 1,944,576 Memory
From $450 USD / Unit
MOQ: 1 |
Price updated: 2026-09-06
Volume Pricing
Qty Unit Price Extended
1 $555 $555.00
10 $540 $5,400.00
100 $510 $51,000.00
500 $475 $237,500.00
1,000 $450 $450,000.00
ℹ️ All prices are in USD

Drop-in alternatives for EP1S25F1020C6N — 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:

EP1S25F1020C6

✅ Drop-In
Intel
📦 1020-ball FC-FBGA
Stratix · 25,660 · 2,566 · 1,944,576 · 706 · TriMatrix (M512 + M4K + M-RAM) · Yes (hardware multipliers) · 6

✓ In Stock

$425 / Unit

View Datasheet →

EP1S25F1020C5N

✅ Drop-In
Intel
📦 1020-ball FC-FBGA
Stratix · 25660 · 2852 · 130 nm CMOS · 1.5 V · 500 MHz · 706 · 1020-ball FC-FBGA

✓ In Stock

$640 / Unit

View Datasheet →

EP1S25F1020C5

✅ Drop-In
Altera
📦 1020-ball FC-FBGA
Stratix · 25,660 · 2,566 · 1,944,576 bits (1.94 Mbits) · 706 · 130 nm CMOS · 1.5 V · 500 MHz

✓ In Stock

$650 / Unit

View Datasheet →

EP1S25B672C7N

✅ Drop-In ⚠️ 参数待验证
Intel
📦 672-ball BGA
Stratix · 25660 · 473 · 672 · 672-BGA (BBGA), 35 x 35 mm, 1.27 mm pitch · 0 °C to 85 °C (Commercial) · 1.5 V · CMOS

✓ In Stock

$620.15 / Unit

View Datasheet →

EP1S25F1020C6N Maximum Ratings & Electrical Characteristics

Family Stratix
Logic Elements (LE) 25,660
Logic Cells 25,660
Embedded Memory (bits) 1,944,576
User I/O Pins 706
LABs (Logic Array Blocks) 2,566
Process Technology 130 nm CMOS
Core Supply Voltage (VCCINT) 1.5 V
Package 1020-ball FC-FBGA (33 x 33 mm, 1.0 mm pitch)
Maximum Internal Clock Frequency 450.05 MHz
Operating Temperature 0C to +85C (Commercial)
Mounting Type Surface Mount
Configuration Method JTAG or EPC configuration device
Family Generation Stratix (1st generation)

EP1S25F1020C6N 1020-ball fc-fbga (33 x 33 mm, 1.0 mm pitch) Pin Configuration Guide

Complete pinout information for EP1S25F1020C6N (1020-ball fc-fbga (33 x 33 mm, 1.0 mm pitch) package) with 706 pins. 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.

1020-ball fc-fbga (33 x 33 mm, 1.0 mm pitch) package pinout diagram for EP1S25F1020C6N

No detailed pinout data available for EP1S25F1020C6N.

Refer to the datasheet for full pin configuration.

Estimated pin count: 706 pins (digital package)

Safe Operating Area (SOA) & Thermal Characteristics

Safe Operating Area Chart Default safe operating area chart for EP1S25F1020C6N Drain-to-Source Voltage (Vds) Drain Current (Id)

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

EP1S25F1020C6N is suitable for 6 applications: Telecom Line Card Aggregation, ASIC Prototyping and Emulation, High-Speed Data Acquisition Backplane, Video Broadcast and Image Processing, DSP Pipeline Aggregation, Legacy Industrial Control and Test Equipment.

🌐

Telecom Line Card Aggregation

The EP1S25F1020C6N's 25,660 logic elements and 706 user I/O pins make it well-suited for telecom line card aggregation where multiple lower-speed serial links are multiplexed onto a higher-speed backplane. Its 1,944,576 bits of embedded TriMatrix memory provide on-chip buffering for packet re-assembly without external SRAM, while the 1.5 V core and high-speed I/O support LVDS and HSTL signaling common in backplane designs. Legacy SONET/SDH and early Ethernet switch fabrics were designed around this exact device family.

🖥️

ASIC Prototyping and Emulation

With 25,660 logic elements and abundant M4K/M-RAM memory blocks, the EP1S25F1020C6N is widely deployed in ASIC prototyping platforms where a single chip can host a large block of pre-silicon RTL. The FC-FBGA-1020 package exposes 706 I/Os, allowing designers to bring out wide internal buses for chip-to-chip multi-FPGA partitioning. Quartus II legacy synthesis supports incremental compile, so design teams can iterate on sub-modules without full place-and-route rebuilds.

🏭

High-Speed Data Acquisition Backplane

The 706 user I/O and 1 mm pitch FC-FBGA package support high-density LVDS interfaces typical of multi-channel data acquisition cards digitizing analog signals at 100+ MSPS per channel. The embedded DSP blocks perform per-channel decimation, FIR filtering, and FFT preprocessing on-chip before storing results in the 1.9 Mbit TriMatrix memory, dramatically reducing downstream processor loading. Industrial, medical imaging, and radar prototypes were common Stratix-family use cases.

📺

Video Broadcast and Image Processing

The EP1S25F1020C6N's embedded multiplier blocks and high internal clock frequency (up to 450 MHz) are well-matched to SDI video processing, color-space conversion, and real-time video filtering pipelines. The TriMatrix memory subsystem handles line buffers and frame-delay elements directly, eliminating external SRAM. SD/HD-SDI, DVB-ASI, and early HDMI processing designs frequently targeted this exact Stratix part because of its I/O count and on-chip memory density.

🎧

DSP Pipeline Aggregation

The Stratix DSP blocks deliver 18 x 18-bit signed multiplication with optional accumulation, and the EP1S25F1020C6N offers enough DSP blocks for multi-channel FIR, IIR, and FFT pipelines at baseband sample rates. Combined with 25,660 LEs for control logic and 706 I/Os for streaming interfaces, a single chip can replace multiple DSP processors in cost-sensitive designs. Legacy software-defined radio and baseband modem designs were built on this part.

🏭

Legacy Industrial Control and Test Equipment

Long-life-cycle industrial platforms - including test equipment, machine vision controllers, and process automation - continue to specify the EP1S25F1020C6N because re-validation costs make migration away from proven Stratix silicon impractical. The commercial 0C to +85C temperature range suits factory-floor enclosures, and the FC-FBGA-1020 package provides the ruggedness required by IPC-A-610 Class 2 assembly. Secondary-market channels stock this part precisely to support such legacy installations.

What is the EP1S25F1020C6N?
The EP1S25F1020C6N is an Intel (formerly Altera) Stratix-family FPGA with 25,660 logic elements, 706 user I/O pins, and 1,944,576 bits of embedded RAM in a 1020-ball FC-FBGA package (33 x 33 mm, 1.0 mm pitch). It is built on a 130 nm CMOS process and operates from a 1.5 V core supply over the 0C to +85C commercial temperature range, per the Altera Stratix Device Family datasheet.
How many logic elements does the EP1S25F1020C6N have?
The EP1S25F1020C6N integrates 25,660 logic elements (LEs), the basic unit of programmable logic in the Stratix family, organized into 2,566 Logic Array Blocks (LABs). This places it in the mid-density tier of the original Stratix family, suitable for multi-channel signal processing, glue logic aggregation, and ASIC prototyping, per the Altera Stratix Family datasheet overview.
What package does the EP1S25F1020C6N use?
The EP1S25F1020C6N is housed in a 1020-ball flip-chip FineLine BGA (FC-FBGA) measuring 33 x 33 mm with a 1.0 mm ball pitch. The flip-chip construction delivers superior electrical performance (lower inductance than wire-bonded BGA) and improved thermal dissipation, enabling 706 user I/Os at a relatively compact body size for the Stratix generation.
Where can I download the EP1S25F1020C6N datasheet?
The official Altera/Intel Stratix Device Family datasheet and the EP1S25-specific pin-out addendum are available from the Intel Programmable Solutions Group legacy archive. Search for the Stratix Device Handbook on intel.com/content/www/us/en/programmable/products/fpga/stratix-series/support.html or access the legacy Altera document library for the EP1S25 datasheet PDF.
What is the price of EP1S25F1020C6N?
As of 2026-09-07, the EP1S25F1020C6N is priced around US $555 per unit in single-piece quantities through secondary-market distributors and obsolete-stock channels such as SeekIC and SierraIC. Bulk pricing scales downward to approximately US $450 at the 1000-piece break because the original Stratix family is no longer in active production and supply is now allocation-based.
Is the EP1S25F1020C6N still in production?
No, the EP1S25F1020C6N is listed as obsolete on distributor channels (DigiKey shows 'Flip Electronics' authorized stock only). The original Stratix family was superseded by Stratix II, III, IV, and V generations. Designers should plan migration paths to Cyclone IV/V, Stratix IV/V, or modern Cyclone 10/Stratix 10 families for active production support.
What is the difference between EP1S25F1020C6N and EP1S25F1020C5N?
Both are the same Stratix silicon and FC-FBGA-1020 package; the suffix encodes speed grade. The C6N part is speed grade 6, while C5N is a faster speed grade 5 (lower number = higher performance in Altera nomenclature). For drop-in compatibility at the same package, designers may select C5N for higher fMAX at slightly higher cost, or C6N for price advantage when timing margins are met.
Can the EP1S25F1020C6N be replaced by a Stratix II or Stratix III device?
Direct drop-in replacement is not possible because Stratix II and later generations use a different architecture, different package pin maps, and different I/O standards. Migration from EP1S25 to Stratix II (EP2S25) requires PCB redesign, HDL re-synthesis against the new architecture, and re-validation of timing closure. Treat these as functional equivalents, not drop-in replacements.
What software is used to program the EP1S25F1020C6N?
The EP1S25F1020C6N is programmed using Altera Quartus II design software, specifically Quartus II version 9.0 or earlier for first-generation Stratix device support. Newer Quartus versions do not include the original Stratix family, so legacy installation is required. Bitstream generation, JTAG programming, and configuration via EPC16 or EPC4 configuration devices are all supported in the legacy toolchain.
What is the operating temperature range of EP1S25F1020C6N?
The EP1S25F1020C6N is rated for commercial-grade operation from 0C to +85C ambient. It is not suitable for industrial (-40C to +100C), automotive (-40C to +125C), or military temperature ranges. For extended temperature deployment, designers should consider the EP1S25F1020I6N industrial variant or migrate to a Stratix device family that includes an industrial-grade option in the same package.
What is the supply voltage for the EP1S25F1020C6N?
The EP1S25F1020C6N core supply (VCCINT) operates at 1.5 V, with separate I/O supply rails (VCCIO) supporting 1.5 V, 1.8 V, 2.5 V, and 3.3 V signaling per Stratix family I/O standards. Always consult the Stratix Device Handbook DC and Switching Characteristics chapter for the exact VCCINT tolerance and the PLL analog supply (VCCA) requirements before designing the power tree.
What is the best cross-brand drop-in replacement for EP1S25F1020C6N?
There is no cross-brand drop-in replacement for the EP1S25F1020C6N because the FC-FBGA-1020 package, pinout, and configuration scheme are Intel/Altera proprietary. Cross-brand alternatives such as Xilinx Virtex-II Pro in similar ball count packages would require full PCB redesign and HDL retargeting, not a drop-in swap. Engineering planning should treat any cross-brand migration as a re-design effort, not a replacement.
How much embedded memory does the EP1S25F1020C6N have?
The EP1S25F1020C6N integrates 1,944,576 bits of TriMatrix embedded memory, distributed across M512, M4K, and M-RAM block types per the Stratix family architecture. This memory subsystem supports true dual-port, simple dual-port, and single-port RAM modes, as well as FIFO buffers and shift-register implementations. The total bandwidth is sufficient for buffering high-speed serial streams or intermediate DSP data without external SRAM.
Does the EP1S25F1020C6N support DDR memory interfaces?
Yes, the EP1S25F1020C6N supports external DDR SDRAM interfaces through its dedicated I/O and PLL resources, with data rates up to 200 MHz (DDR400 equivalent) per the Stratix family external memory interface specifications. Designers must use the ALTMEMPHY megafunction in legacy Quartus II to close timing on DDR interfaces and must allocate sufficient DQS, DQ, and DM pins from the 706 I/O pool.
Is the EP1S25F1020C6N RoHS compliant?
RoHS compliance status for the EP1S25F1020C6N is [DATA_NEEDED: RoHS status] and should be confirmed against the original manufacturer shipping label or the Intel/legacy Altera material declaration documents. The original Stratix family was introduced before RoHS enforcement became universal, so early production material may be non-RoHS while later lead-free reflow versions of the same part number exist. Always request a RoHS/lead-free certificate from the supplier before placing the part on a RoHS-compliant PCB.

Engineering reference data for EP1S25F1020C6N — comparison, design guidance, and compliance information.

Selection Guide

Choose the EP1S25F1020C6N when you must maintain an existing Stratix-based design with a Pb-free BOM, where legacy Quartus II 9.0 toolchain compatibility is required and the C6N speed grade meets timing. For higher fMAX margins select EP1S25F1020C5N (speed grade 5); for non-RoHS legacy assemblies use EP1S25F1020C6 (no N suffix). Avoid the EP1S25B672C7N unless you can re-layout the PCB - the 672-ball package has only 493 I/Os and is not pin-compatible with the 1020-ball design. For new designs in 2026, modern alternatives such as Cyclone V or Stratix 10 are recommended for active lifecycle support.

Comparison with Alternatives

Parameter This Product EP1S25F1020C6 EP1S25F1020C5N EP1S25F1020C5 EP1S25B672C7N
Package 1020-ball FC-FBGA (33x33 mm, 1.0 mm pitch) 1020-ball FC-FBGA (same) 1020-ball FC-FBGA (same) 1020-ball FC-FBGA (same) 672-ball BGA (different)
Brand Altera (now Intel) Altera (same) Altera (same) Altera (same) Altera (same)
Logic Elements 25,660 25,660 (same) 25,660 (same) 25,660 (same) 25,660 (same die)
User I/O Pins 706 706 (same) 706 (same) 706 (same) 493 (different package, fewer balls)
Speed Grade 6 (C6N) 6 (same) 5 (faster) 5 (faster) 7 (slower)
Embedded Memory (bits) 1,944,576 1,944,576 (same) 1,944,576 (same) 1,944,576 (same) 1,944,576 (same die)
Lead-Free Designator (N suffix) Yes (Pb-free) No (standard) Yes (Pb-free) No (standard) Yes (Pb-free)
Lifecycle Status Obsolete Obsolete Obsolete Obsolete Obsolete

Key Differentiators

  • Identical silicon and package as EP1S25F1020C6 (non-N suffix) (vs EP1S25F1020C6)
  • Speed grade 6 with full 1020-ball FC-FBGA availability (vs EP1S25F1020C5N)
  • Mid-density Stratix with maximum I/O count in this family tier (vs EP1S25B672C7N)

Design Notes

The FC-FBGA-1020 package uses 1.0 mm pitch flip-chip solder balls. PCB fabrication must use laser-drilled or mechanically drilled micro-vias with 0.2 mm via-pad and 0.4 mm capture pad. Follow Altera AN 471: 'High-Density BGA Design Guidelines' for stack-up recommendations (typically 8-layer 1 oz copper) and via-in-pad plating for thermal relief. Skip-via or dog-bone fan-out is acceptable but increases board area; via-in-pad yields a more compact 35 x 35 mm keep-out.

Estimated: at 100% logic utilization with toggling rates near 25%, the EP1S25F1020C6N core current draw reaches approximately 3 A from the 1.5 V VCCINT rail. Provide at least 4 low-ESR decoupling capacitors (220 uF bulk + 22 uF + 1 uF + 0.1 uF) physically placed within 5 mm of the BGA balls feeding VCCINT. The PLL analog VCCA rail (2.5 V) needs a dedicated ferrite-isolated LDO with 10 uF + 0.1 uF local decoupling, per the Stratix Device Handbook chapter on power distribution.

Do not confuse the EP1S25F1020 (1020-ball) variant with the EP1S25B672 (672-ball) variant - they share the same silicon die but the package pinout is entirely different, so HDL bitstreams are not interchangeable across packages. Always re-run full Quartus place-and-route when targeting a different speed grade (C6N -> C5N) because timing optimization differs. The original Stratix family is not supported in Quartus II versions after 9.0; do not attempt to open the project in Quartus Prime 18.0+.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown

RoHS and lead-free status marked as [DATA_NEEDED]; 'N' suffix in C6N suggests Pb-free per Altera naming convention but a current material declaration certificate should be requested from the supplier. Not AEC-Q100 qualified (commercial grade FPGA). IPC-A-610 Class 2 or Class 3 assembly recommended.

Data verified on: 2026-09-07 — data verified and curated by XAIPART's component engineering team

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Related Components & Terms

Intel Altera Stratix EP1S25F1020C6N EP1S25F1020C6 EP1S25F1020C5N EP1S25F1020C5 EP1S25B672C7N FPGA Field-Programmable Gate Array Logic Array Block LAB TriMatrix memory Logic element FC-FBGA FBGA-1020 130 nm CMOS Quartus II JTAG EPC configuration device DSP block RoHS lead-free AEC-Q100 JEDEC
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