EP1S25F780C6 - Stratix FPGA 25K LE, 597 I/O, 780-FBGA | Altera
MPN: EP1S25F780C6 ✗ 停產EP1S25F780C6 概覽
What is a Stratix FPGA? The Stratix family is Altera's first-generation high-performance FPGA architecture (introduced 2002), combining programmable logic, embedded memory blocks (TriMatrix), embedded multipliers (DSP blocks), and high-speed transceivers in a single device. FPGAs sit at the top of the programmable-logic hierarchy - above CPLDs - and below ASICs - giving engineers a reconfigurable alternative to custom silicon. Stratix devices were widely adopted in telecom line cards, military signal processing, and high-speed serial-link prototypes during the mid-2000s.
Key features include dedicated DSP blocks for high-throughput multiply-accumulate operations, support for external memory interfaces including DDR SDRAM and QDR SRAM via dedicated DQS circuitry, embedded PLLs for clock management, and configuration via passive serial, fast passive parallel, or JTAG modes. The 780-pin FBGA package exposes the full I/O count and supports multiple I/O standards (LVTTL, LVCMOS, SSTL, HSTL, LVDS, LVPECL) on a per-pin basis, enabling direct interfacing to parallel buses, memory chips, and differential signaling links.
Technical depth: the EP1S25 is fabricated in 1.5 V 130 nm CMOS with copper interconnect, contains 2,566 LABs (logic array blocks), and offers TriMatrix memory architecture (MRAM, M4K, M512 blocks). The 1.5 V core combined with selectable I/O voltages (1.5/1.8/2.5/3.3 V) allows bridging between legacy 5 V-TTL peripherals and modern low-voltage memory.
Typical applications include telecom line-card interface logic, military/aerospace signal processing, custom DSP pipelines, bus-bridging glue logic between processors and peripherals, and prototype ASIC verification using the Stratix logic density. When designing with this legacy device, note that new designs should generally target Cyclone or Arria families; the EP1S25F780C6 is best reserved for sustaining production of existing Stratix-based boards where proven firmware and proven PCB layouts must be preserved.
直接替換替代品,適用於 EP1S25F780C6 — 相同封裝,腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號: EP1S25F780C6 (相同外形與佔位) — 差異在於 Package, Operating Temperature, DSP Blocks, Process Technology, Speed Grade.
EP1S25F780I6N
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EP1S25F780C5N
✅ 直接替換聯絡詢價
查看資料表 →EP1S25F780C5
✅ 直接替換聯絡詢價
查看資料表 →EP1S20F780C6
✅ 直接替換聯絡詢價
查看資料表 →EP1S20F780C6N
✅ 直接替換聯絡詢價
查看資料表 →EP1S25F780C6 最大額定值與電氣特性
| Family | Stratix |
| Logic Elements | 25,660 |
| Total RAM Bits | 1,944,576 |
| Number of LABs/CLBs | 2566 |
| Number of I/O | 597 |
| Supply Voltage - Core | 1.5 V |
| Process Technology | 130 nm CMOS |
| Maximum Internal Frequency | 450.05 MHz |
| 工作溫度 | 0C to +85C (Commercial) |
| 封裝 | 780-BBGA (FCBGA), 29 x 29 mm, 1 mm pitch |
| 安裝類型 | Surface Mount |
| Speed Grade | C6 |
| Logic Family | CMOS |
| 腳位數 | 780 |
| Configuration Mode | Passive Serial / Fast Passive Parallel / JTAG |
EP1S25F780C6 780-bbga (fcbga), 29 x 29 mm, 1 mm pitch 腳位配置指南
EP1S25F780C6(780-bbga (fcbga), 29 x 29 mm, 1 mm pitch 封裝)的腳位配置。 此數位 IC 包含 GPIO、通訊介面(UART、SPI、I2C)與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料: EP1S25F780C6.
請參閱 資料表 以查看完整腳位配置。
典型應用
EP1S25F780C6 適用於 6 應用s: Telecom Line-Card Interface Logic, Military and Aerospace Signal Processing, Custom DSP Pipeline and Channelizer, Bus Bridge and Glue Logic Aggregator, Prototype ASIC Verification Platform, Legacy Industrial Controller Sustaining.
Telecom Line-Card Interface Logic
The EP1S25F780C6 fits telecom line-card designs because its 597 user I/O and 25,660 logic elements can terminate multiple TDM buses, implement UTOPIA/SPI-3 backplane interfaces, and run glue logic between network processors and framer ICs in parallel. The dedicated PLL and clock-network hardware supports clean 77.76 MHz STS-12/STM-4 clock distribution with low jitter, and the 1,944,576 bits of TriMatrix RAM provide per-channel FIFO buffering without external SRAM. Compared to a discrete CPLD bank, this part consolidates interface logic into a single reprogrammable device, simplifying board layout while keeping the firmware path identical across line-card SKUs.
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Military and Aerospace Signal Processing
The EP1S25F780C6 is widely deployed in legacy defense signal-processing subsystems because the 80 DSP blocks deliver 18x18-bit MAC throughput for FIR filters, FFT butterflies, and beamforming weights at sample rates up to ~250 MHz, and the Commercial 0-85C temperature range covers most ground-station and shipboard chassis. The 780-FBGA package exposes 597 I/O for parallel ADC/DAC interfaces (e.g., LVDS to dual-channel 14-bit 125 MSPS converters), while the 1.5 V core keeps dynamic power manageable for air-cooled enclosures. For systems already proven with Stratix firmware, sustaining the EP1S25F780C6 over redesigning to newer Cyclone V preserves the IP investment.
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Custom DSP Pipeline and Channelizer
Engineers using the EP1S25F780C6 for custom DSP pipelines benefit from the dedicated hardware multipliers (80 DSP blocks, 18x18) and TriMatrix memory blocks (M512, M4K, MRAM) which enable fully pipelined multiply-accumulate structures with no LUT overhead. Each DSP block supports up to 450 MHz throughput, allowing real-time baseband processing for software-defined radio channelizers, radar pulse compressors, and modem signal chains. The 1,944,576 embedded RAM bits are sufficient for 256-tap FIR filter banks or 16K-point FFT working memory, eliminating external SRAM in compact baseband designs.
推薦
Bus Bridge and Glue Logic Aggregator
The EP1S25F780C6 serves as a multi-bus bridge aggregating legacy interfaces such as ISA, VME, PCI, or proprietary backplanes into a single coherent interface to a modern processor or SoM. The 597 user I/O can simultaneously connect to a 32-bit local bus, a 16-bit GPIO bank, and a parallel external memory port, while the embedded TriMatrix memory holds bridge FIFOs without external buffering. The flexible per-bank VCCIO (1.5/1.8/2.5/3.3 V) allows direct connection to 5 V-TTL peripherals via external 3.3 V translation, eliminating level-shifters on legacy boards. This pattern is common in long-life industrial controllers where the FPGA becomes the single revision point.
推薦
Prototype ASIC Verification Platform
The EP1S25F780C6 is well-suited as an ASIC verification vehicle because its 25,660 logic elements can hold a representative slice of a target ASIC's logic, with 1,944,576 embedded RAM bits mapping to embedded SRAM macros and 80 DSP blocks mirroring candidate MAC units. The 597 user I/O fan out to break-out headers exercising the full pad ring of the ASIC under test, while JTAG-driven configuration allows rapid bitstream iteration between verification campaigns. Using Quartus II for synthesis lets verification engineers reuse RTL written for ASIC sign-off with minimal modification, accelerating bring-up of large SoC designs before tape-out.
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Legacy Industrial Controller Sustaining
Long-life industrial automation and process-control products originally designed around the EP1S25F780C6 continue to specify this part because the firmware is already validated to regulatory standards and the PCB layout is qualified. The Commercial 0-85C range covers factory-floor enclosure temperatures, and the 780-FBGA package provides the I/O density needed for multi-axis motion-control or PLC-style discrete I/O aggregation. Sustaining the existing Stratix silicon avoids costly re-certification of new FPGA firmware under IEC 61508 or UL 508 standards, making this obsolete part strategically important for 10-15 year product lifecycles.
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推薦產品摘要
工程參考資料,適用於 EP1S25F780C6 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EP1S25F780I6N | EP1S25F780C5N | EP1S25F780C5 | EP1S20F780C6 |
|---|---|---|---|---|---|
| Package | 780-BBGA (FCBGA) | 780-BBGA (FCBGA) - same | 780-BBGA (FCBGA) - same | 780-BBGA (FCBGA) - same | 780-BBGA (FCBGA) - same |
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Logic Elements | 25,660 | 25,660 (same die) | 25,660 (same die) | 25,660 (same die) | 18,460 (-28%) |
| Number of I/O | 597 | 597 (same die) | 597 (same die) | 597 (same die) | 586 (-2%) |
| Temperature Grade | Commercial (0C to 85C) | Industrial (-40C to 100C) | Commercial (0C to 85C) | Commercial (0C to 85C) | Commercial (0C to 85C) |
| Speed Grade | C6 | I6 (slower) | C5 (faster) | C5 (faster) | C6 (same) |
| Lead-Free / RoHS | Lead-bearing (non-RoHS) | Lead-free (RoHS) | Lead-free (RoHS) | Lead-bearing | Lead-bearing |
| Supply Voltage - Core | 1.5 V | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Embedded RAM | 1,944,576 bits | 1,944,576 bits (same die) | 1,944,576 bits (same die) | 1,944,576 bits (same die) | 1,669,248 bits (-14%) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主要差異化特點
- Highest-density Stratix with 780-FBGA maximum I/O count (對比EP1S20F780C6)
- Lead-free RoHS drop-in option available without redesign (對比EP1S25F780I6N)
- Same-die speed grade flexibility (C5/C6/I6) without footprint change (對比EP1S25F780C5N)
設計說明
Estimated: at 100% toggle rate on a typical Stratix design with 50% I/O utilization, the 1.5 V core draws ~1.2 A (~1.8 W) plus ~0.5 A per VCCIO bank configured to 3.3 V. Total power budget for a 4-bank design is typically 4-6 W. Use a low-ESR ceramic decoupling network of 4.7 uF + 0.1 uF per VCC pin pair, with bulk 100 uF tantalum on each supply rail. The 1.5 V VCCINT rail requires sequencing - bring VCCINT up before VCCIO and VCCPD per the Stratix handbook power-on reset (POR) specification.
The 780-FBGA uses 1.0 mm ball pitch in a 29 x 29 mm body. PCB design requires 4 mil (0.1 mm) trace-and-space with 0.5 mm microvia stack-ups; a 6-layer stackup (signal-GND-power-signal-power-signal) is recommended for impedance-controlled LVDS pairs. All VCC and GND balls must be connected directly to planes - any non-connected VCC ball will cause logic failure or POR issues. Use antipad-in-pad or via-in-pad to fan out the inner rows to inner layers for power distribution and signal escape.
Do not assume the EP1S25F780C6 is RoHS compliant - the non-N suffix part uses lead-bearing balls. For new designs or products requiring RoHS, choose EP1S25F780C6N explicitly. Configuration mode pins MSEL[2:0] must match the intended configuration scheme at every power-up; incorrect MSEL settings cause configuration failure with no error indication on nSTATUS. The nCONFIG pin must see a clean rising edge with monotonicity < 10 ns - noisy power-up causes false configuration retries.
合規資訊
EP1S25F780C6 is the lead-bearing variant; the N-suffix variant EP1S25F780C6N is RoHS compliant. FPGAs are not AEC-Q100 qualified in this family; industrial temperature grade does not imply automotive qualification.