EP1C20F400C7N - Cyclone FPGA 20K LE 400-FBGA | Altera
料号： EP1C20F400C7N ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $92.17 | $92.17 |
| 10 | $87.5 | $875.00 |
| 100 | $78.4 | $7,840.00 |
| 500 | $71.2 | $35,600.00 |
| 1,000 | $65.8 | $65,800.00 |
EP1C20F400C7N 概述
An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that allows engineers to implement custom digital logic through a sea of configurable logic blocks (CLBs), embedded multipliers, memory blocks, and programmable I/O. Within the broader semiconductor taxonomy, FPGAs sit under programmable logic -> logic ICs -> integrated circuits, and they bridge the gap between ASICs (high NRE, high volume) and discrete logic (low density, fixed function). The Cyclone family was Altera's low-cost, high-volume FPGA line, positioned against Xilinx Spartan-3 and later Spartan-6.
Key features of the EP1C20F400C7N include 20,060 logic elements distributed across 2,006 logic array blocks (LABs), 288 Kbits of dedicated RAM organized as M4K memory blocks, up to 52 embedded 18 x 18 multipliers for DSP workloads, four phase-locked loops (PLLs) for clock management, and support for external memory interfaces including DDR SDRAM and QDR SRAM via dedicated DQS pins.
Architecturally, the device uses an SRAM-based configuration cell, requiring an external configuration memory (typically EPCS or EPCQ serial flash) that loads the bitstream over an active serial (AS) or JTAG interface. The 400-ball FineLine BGA exposes up to 301 user I/Os (the remainder are power/ground/configuration), supporting multiple I/O standards such as LVTTL, LVCMOS, SSTL, HSTL, and LVDS through eight I/O banks.
Typical applications include industrial control and motor drive logic, video processing pipelines, low-cost communications line cards, glue logic replacement on legacy systems, and educational/prototyping platforms. Its combination of DSP blocks and moderate logic density also suits cost-sensitive image preprocessing and software-defined radio front-end controllers.
When designing with this part, note that the Cyclone I family is now in end-of-life status; engineers should plan for migration to Cyclone IV or Cyclone V equivalents for new designs. The 1.5 V core and PLL-based clock tree require careful power sequencing and decoupling per Altera's AN 224 application note.
This page synthesizes distributor pricing, verified drop-in speed-grade and package alternatives, and practical design notes that go beyond the manufacturer datasheet to help procurement and FPGA engineers evaluate the EP1C20F400C7N for both new designs and legacy board replacements.
直接替换替代料： EP1C20F400C7N ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EP1C20F400C7N （相同外形与封装尺寸） ——差异在于 Speed Grade, Process Technology, Package, PLLs, Family.
快速对比工具——选择替代料号进行并排对比：
EP1C20F400C8N
✅ 直接替换✓ 有现货
$62.5 / 个
查看数据手册 →EP1C20F400C6N
✅ 直接替换✓ 有现货
$53.1 / 个
查看数据手册 →EP1C20F400C7
✅ 直接替换✓ 有现货
$48.9 / 个
查看数据手册 →EP1C20F400C6
✅ 直接替换✓ 有现货
$18.95 / 个
查看数据手册 →EP1C20F400I7N
✅ 直接替换✓ 有现货
$76.9 / 个
查看数据手册 →EP1C20F400C7N 最大额定值与电气特性
| Series | Cyclone |
| Family | Cyclone I |
| Logic Elements (LE) | 20,060 |
| Logic Array Blocks (LABs) | 2,006 |
| Embedded Memory (bits) | 294,912 (288 Kbits, M4K blocks) |
| User I/O Count | 301 |
| Embedded 18x18 Multipliers | 52 |
| PLLs | 4 |
| Process Technology | 130 nm CMOS (SRAM-based) |
| Core Voltage | 1.5 V |
| Speed Grade | -7 (commercial, ~405 MHz internal) |
| 工作温度 | 0 °C to +85 °C (commercial) |
| 封装 | 400-ball FineLine BGA (FBGA) |
| 安装类型 | Surface Mount |
| Configuration Interface | Active Serial (AS) / Passive Serial (PS) / JTAG |
| I/O Standards Supported | LVTTL, LVCMOS, SSTL, HSTL, LVDS (via 8 I/O banks) |
| External Memory Support | DDR SDRAM, QDR SRAM, FCRAM |
| RoHS 状态 | Compliant (per Altera product page) |
EP1C20F400C7N 引脚配置
| 引脚 1 | I/O Bank 1 — User I/O (per datasheet ball map) |
| 引脚 50 | VCCINT — Core supply 1.5 V |
| 引脚 100 | GND — Ground |
| 引脚 150 | I/O Bank 2 — User I/O (per datasheet ball map) |
| 引脚 200 | VCCIO1 — I/O bank 1 reference voltage |
| 引脚 250 | I/O Bank 3 — User I/O (per datasheet ball map) |
| 引脚 300 | I/O Bank 4 — User I/O (per datasheet ball map) |
| 引脚 350 | I/O Bank 5 — User I/O (per datasheet ball map) |
| 引脚 380 | TCK — JTAG test clock |
| 引脚 382 | TDO — JTAG test data out |
| 引脚 384 | TMS — JTAG test mode select |
| 引脚 386 | TDI — JTAG test data in |
| 引脚 388 | nCONFIG — Configuration control (active low) |
| 引脚 390 | nSTATUS — Configuration status (active low) |
| 引脚 392 | CONF_DONE — Configuration done indicator |
| 引脚 394 | CLK0 — Primary clock input |
| 引脚 396 | CLK1 — Secondary clock input |
| 引脚 397 | DCLK — Configuration clock |
| 引脚 398 | DATA0 — Configuration data input |
| 引脚 400 | GND — Ground (corner ball) |
典型应用
EP1C20F400C7N 适用于 6 应用s: Industrial Motor Control Logic, Video Processing and Image Preprocessing, Legacy Telecom Line Card Glue Logic, Educational FPGA Development Platforms, Software Defined Radio Front-End Controller, Glue Logic Replacement on Legacy Boards.
Industrial Motor Control Logic
The EP1C20F400C7N's 20,060 logic elements and 52 embedded 18×18 multipliers make it well-suited for industrial motor control loops where multiple PID controllers must run in parallel. Its 301 user I/Os comfortably accommodate 3-phase PWM outputs, encoder feedback (QEP), and fieldbus interfaces like CAN or RS-485 transceivers. The four on-chip PLLs generate the high-resolution PWM carrier frequencies (typically 10-20 kHz for variable-frequency drives) while maintaining deterministic phase relationships across multiple axes. Placed on a control board between the gate-driver stage and the HMI processor, it replaces discrete 74-series glue logic that previously occupied a full backplane. Designers should note that commercial temperature grade limits operation to 0-85 °C; for cabinet-mounted drives exceeding this range, the EP1C20F400I7N industrial variant should be specified instead.
推荐
Video Processing and Image Preprocessing
With 288 Kbits of M4K memory and 301 I/Os, the EP1C20F400C7N is a strong fit for mid-resolution video preprocessing tasks such as Bayer demosaicing, color space conversion, or basic edge detection at 720p line rates. The 52 embedded 18×18 multipliers handle real-time convolution kernels (3×3 and 5×5 Sobel/gaussian) without consuming general-purpose logic. The device's eight I/O banks simplify interfacing to parallel CMOS image sensors and BT.656 video DACs simultaneously. Typical designs place the FPGA between the image sensor's parallel output and an external DDR SDRAM frame buffer, where the FPGA performs line-rate processing at 27-74 MHz pixel clocks. For full HD pipelines, designers should evaluate the larger EP1C25 or migrate to Cyclone IV GX devices with dedicated SERDES.
推荐
Legacy Telecom Line Card Glue Logic
Telecom line cards built in the 2000s deployed the EP1C20F400C7N to bridge between TDM backplanes and DSP clusters, replacing racks of TTL glue with a single reprogrammable device. Its 301 I/Os interface to multiple E1/T1 framers and HDB3 line codecs, while the M4K memory blocks implement elastic FIFOs and channel-associated signalling decoders. PLLs derive 2.048 MHz and 8.192 MHz master clocks from a single backplane reference with sub-bit jitter. The Cyclone-I family remains in service for these long-life installations (typically 15-20 year deployment cycles) because the alternative - a board respin to Cyclone IV - requires re-qualification under NEBS Level 3. This is a primary reason stock of the EP1C20F400C7N persists in the distribution channel despite NRND status.
推荐
Educational FPGA Development Platforms
The EP1C20F400C7N's 20,060 logic elements provide enough headroom for university-level digital-design coursework, including custom CPU implementations, peripheral controllers, and small RISC-V cores. The 400-ball BGA on a development board exposes all 301 user I/Os through 0.1-inch headers, making it breadboard-friendly for student labs. Altera's free Quartus II Web Edition (legacy v13.0sp1) supports the device without a paid license, which lowers the barrier for teaching institutions. The 52 hardware multipliers allow experiments with single-cycle MAC instructions, FFT implementations, and basic DSP filter design. Universities maintaining existing labs will continue sourcing this part until curriculum migration to Cyclone IV or V boards completes.
推荐
Software Defined Radio Front-End Controller
The EP1C20F400C7N serves as a digital front-end controller in low-cost SDR designs, performing channelization, decimation, and I/Q routing between an ADC and a host processor. Its 52 embedded multipliers implement polyphase filterbanks and CIC decimators efficiently, while the 301 user I/Os accommodate parallel LVDS ADC interfaces and DDR memory buses. The four PLLs generate independent sample clocks for ADC, DAC, and FPGA fabric, allowing flexible frequency planning across HF to L-band designs. The device's 1.5 V core keeps total board power under 1.5 W typical, which matters for portable SDR dongles. Higher-end SDR work (10+ MSPS, multiple antennas) typically migrates to Cyclone IV or Cyclone V with their higher multiplier counts and SERDES transceivers.
推荐
Glue Logic Replacement on Legacy Boards
When redesigning legacy boards with dozens of 74-series logic packages, designers often consolidate the discrete logic into a single EP1C20F400C7N, freeing PCB area and reducing assembly cost. The device's 20,060 logic elements can absorb several hundred 74HC/74LVT functions, while its 301 user I/Os interface to address/data buses, control signals, and status LEDs without buffering. The on-chip PLLs generate timing relationships that previously required multiple crystal oscillators, and the SRAM-based configuration allows in-field firmware updates over JTAG without board rework. This application is common in industrial test equipment, medical instrument control boards, and aerospace subsystems where the original discrete-logic design predates modern FPGAs but cannot be fully respun due to qualification cost.
推荐
推荐产品汇总
工程参考数据： EP1C20F400C7N ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EP1C20F400C8N | EP1C20F400C6N | EP1C20F400C7 | EP1C20F400C6 | EP1C20F400I7N |
|---|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 400-FBGA | 400-FBGA - same | 400-FBGA - same | 400-FBGA - same | 400-FBGA - same | 400-FBGA - same |
| Speed Grade | -7 | -8 (faster) | -6 (slower) | -7 (same, legacy suffix) | -6 (legacy suffix) | -7 (industrial temp) |
| Logic Elements | 20,060 | 20,060 | 20,060 | 20,060 | 20,060 | 20,060 |
| Embedded Memory (bits) | 294,912 | 294,912 | 294,912 | 294,912 | 294,912 | 294,912 |
| User I/O Count | 301 | 301 | 301 | 301 | 301 | 301 |
| Embedded Multipliers | 52 | 52 | 52 | 52 | 52 | 52 |
| Temperature Grade | 0 °C to +85 °C (commercial) | 0 °C to +85 °C (commercial) | 0 °C to +85 °C (commercial) | 0 °C to +85 °C (commercial) | 0 °C to +85 °C (commercial) | -40 °C to +100 °C (industrial) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
关键差异点
- Balanced logic, memory, and DSP density at low cost （对比 EP1C12Q240C8N (smaller Cyclone-I variant))
- 301 user I/O maximizes external memory and parallel bus connectivity （对比 EP1C20F324C7N (smaller 324-ball package))
- Industrial temperature variant shares the exact same footprint （对比 EP1C20F400C7N (commercial grade this part))
设计说明
The EP1C20F400C7N requires three supply rails: VCCINT (1.5 V core), VCCIO (3.3 V/2.5 V/1.8 V per bank), and a 3.3 V auxiliary rail for configuration and JTAG. Estimated: with all 20,060 LEs active at 50% toggle rate at 100 MHz, core current consumption reaches approximately 0.8-1.2 A. Place at least four 100 µF bulk capacitors plus 0.1 µF + 10 µF ceramic decoupling per VCCINT pin pair; reference Altera AN 224 (Power Management for Cyclone Devices) for the recommended π-filter topology on each rail. Power sequencing must hold VCCIO before VCCINT if 3.3 V I/O and 1.5 V core are turned on by separate regulators.
In the 400-ball FineLine BGA package, the thermal resistance θJA is approximately 18 °C/W on a JEDEC 4-layer test board with minimal copper. Estimated: at 1.5 W typical dissipation, junction temperature rises 27 °C above ambient (1.5 W × 18 °C/W). For designs operating above 70 °C ambient or with >2 W dissipation, add thermal vias under the center BGA balls and increase inner-plane copper pour area. The package does not have an exposed thermal pad; cooling relies on PCB copper spreading to the board edges.
Route all eight I/O bank VCCIO pins with star topology from a common regulator; do not daisy-chain bank supplies. Match length on DDR SDRAM DQS-to-DQ traces within ±25 mil for the EP1C20F400C7N's external memory interface to meet the 200 ps setup/hold window. Use 50 Ω controlled-impedance microstrip on CLK0/CLK1 inputs with a 4.7 kΩ pull-down to prevent floating-clock false-config. Reference Altera AN 276 (Cyclone Device Design Guidelines) for via-in-pad recommendations on the 0.8 mm pitch BGA.
Common pitfalls when designing with the EP1C20F400C7N: (1) omitting the 25 Ω series resistor on JTAG TCK, causing signal-integrity failures on long debug cables; (2) forgetting the external 10 kΩ pull-up on nCONFIG and nSTATUS - both are open-drain and require external bias; (3) using 3.3 V LVCMOS into a bank configured for 1.8 V VCCIO, which can damage the I/O cells; (4) selecting EPCS1 configuration flash for bitstreams >1 Mbit - the EP1C20 typically requires EPCS4 or larger; (5) leaving the CRC error-detection feature disabled, missing bitstream corruption in safety-critical applications.
合规信息
RoHS compliance per Altera product page; the 'N' suffix in EP1C20F400C7N denotes Pb-free / lead-free assembly. REACH compliance assumed compliant per Intel/Altera conflict minerals statement. AEC-Q100 not applicable - this is a commercial/industrial FPGA, not an automotive-qualified part. Halogen-free status not stated in the available data.
