EP3C16U256C7 - Cyclone III FPGA, 15408 LEs | Intel/Altera
MPN： EP3C16U256C7 ✓ 啟用中EP3C16U256C7 概覽
An FPGA is a programmable-logic semiconductor whose internal lookup tables, registers, interconnect, and memory blocks can be configured after manufacture. Within the semiconductor hierarchy, this device belongs to the Cyclone III family of FPGAs and CPLDs, positioned below higher-density programmable-logic devices for cost-conscious designs that still need substantial parallel logic, on-chip memory, and flexible I/O allocation.
The verified device data identifies 15,408 logic elements, 516,096 RAM bits, and 168 I/Os. Cross-reference information associates the device with the 65 nm Cyclone III process and lists a maximum clock frequency of 437.5 MHz, while one comparison listing reports a 1.2 V core supply. These figures make the EP3C16U256C7 suitable for parallel data acquisition, industrial control, protocol bridging, and general-purpose embedded logic rather than high-performance processor systems.
The EP3C16U256C7 uses a 256-LFBGA package, making dense board routing and careful via-in-pad or microvia considerations important in multilayer PCB construction. Its 168 user I/Os provide connectivity for external memory, communication transceivers, sensors, and digital control signals. Configuration, clocking, and power-distribution details should be taken directly from the complete manufacturer device handbook and pin-connection guidelines.
Typical uses include industrial automation modules, data-acquisition front ends, communication gateways, LED and display control, sensor aggregation, and embedded protocol converters. The 516,096 RAM bits can buffer sampled data or implement dual-port storage, while the 15,408 logic elements support parallel pipelines, state machines, protocol engines, and control logic.
When designing the power system, budget for the 1.2 V core rail as well as bank-dependent I/O supplies, and separate high-current and sensitive routes to reduce coupling. Verify ball assignments, decoupling requirements, configuration-scheme support, and maximum I/O standards against the complete Cyclone III documentation before layout release.
This page consolidates current distributor availability, sourced pricing, verified resource counts, and same-family replacement guidance into one engineering-focused view. It also distinguishes exact drop-in options from lower-speed or industrial-grade variants whose qualification and timing margin must be reviewed before schematic approval.
直接替換替代品，適用於 EP3C16U256C7 — 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： EP3C16U256C7 （相同外形與佔位） — 差異在於 Package, Mounting Type, Logic Elements, Device Type, Embedded Memory.
EP3C16U256C7N
✅ 直接替換📋 參考替代品（不在目錄中）
EP3C16F256C7
✅ 直接替換聯絡詢價
查看資料表 →EP3C16F256I7N
✅ 直接替換聯絡詢價
查看資料表 →EP3C16U256C6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EP3C16U256C8N
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EP3C16U256C7 最大額定值與電氣特性
| Device Type | Cyclone III Field Programmable Gate Array (FPGA) |
| Logic Elements | 15,408 |
| Embedded RAM | 516,096 bits |
| User I/O Count | 168 |
| 封裝 | 256-LFBGA |
| Technology | 65 nm |
| Core Supply Voltage | 1.2 V |
| 最大時脈頻率 | 437.5 MHz |
| Manufacturer | Intel/Altera |
| Series | Cyclone III |
| 安裝類型 | Surface Mount |
EP3C16U256C7 256-lfbga 腳位配置指南
EP3C16U256C7（256-lfbga 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： EP3C16U256C7.
請參閱 資料表 以查看完整腳位配置。
典型應用
EP3C16U256C7 適用於 6 應用s: Industrial Control and Automation, Data Acquisition and Signal Conditioning, Communication Gateway and Protocol Bridging, Sensor Aggregation and Edge Processing, Display and LED Control, Embedded Processor and Coprocessor.
Industrial Control and Automation
The EP3C16U256C7 fits compact industrial control logic because its 15,408 logic elements can implement motion-state machines, interlocks, counters, and sequencing logic while 516,096 RAM bits provide local data buffering. The 168 user I/Os allow direct connections to encoders, limit switches, digital I/O modules, and actuator drivers. Using the 1.2 V core rail and separate I/O supplies helps separate sensitive core power from noisy output drivers, although industrial suitability must be confirmed against the device's verified temperature grade. For production designs, check every supported voltage standard and supply rail against the complete Cyclone III device handbook.
推薦
Data Acquisition and Signal Conditioning
The EP3C16U256C7 is suitable for parallel data-acquisition front ends that require deterministic sampling, digital filtering, and time alignment. Its 15,408 logic elements can pipeline ADC data and implement FIR or decimation functions, while the 516,096-bit RAM capacity can buffer several acquisition frames. The 168 I/Os provide parallel connections to converters and capture devices without relying on a high-speed serial link. Clocking quality and the reported 437.5 MHz maximum frequency require careful review of board-level skew, jitter, and the selected timing closure, so use the manufacturer clocking guidance rather than treating the headline frequency as an automatic system-level result.
推薦
Communication Gateway and Protocol Bridging
The EP3C16U256C7 can implement parallel-to-serial protocol conversion, packet buffering, and interface bridging in communication modules. The 15,408 logic elements support transmit and receive state machines, while 516,096 RAM bits provide storage for packet queues or streaming data. Its 168 I/Os are useful for byte-wide buses and multiple chip-select signals, and the device can coexist with dedicated transceivers on the same board. Because protocol timing and clock-domain crossing dominate system reliability, designers should use the Quartus device fitter and the complete Cyclone III timing guidance to validate each crossing and preserve the required I/O voltage standards.
推薦
Sensor Aggregation and Edge Processing
The EP3C16U256C7 fits edge-processing modules that must combine outputs from several digital sensors before forwarding summarized data. Its 15,408 logic elements can execute filtering, thresholding, calibration tables, and event classification, while the 516,096-bit RAM can temporarily retain time-stamped sensor samples. The 168 user I/Os permit attachment to multiple buses or discrete sensor interfaces without a separate microcontroller in simple designs. Power and signal integrity are especially important in compact IoT hardware: place decoupling close to the BGA balls, route sensitive interfaces away from switching supplies, and verify the allowable input levels and drive strengths for every connected sensor.
推薦
Display and LED Control
The EP3C16U256C7 is practical for LED matrices, multiplexed displays, and visual status panels because 168 I/Os provide substantial parallel drive capability and 15,408 logic elements can generate refresh timing, character rendering, and animation patterns. The 516,096 bits of RAM can store fonts, bitmap frames, or animation sequences. Designers can use dedicated I/O standards to match external drivers while keeping the core on its 1.2 V supply. Because a 256-LFBGA requires fine-pitch routing and careful return paths, the board layout should minimize crosstalk on long parallel display outputs and provide direct ground references beneath signal groups.
推薦
Embedded Processor and Coprocessor
The EP3C16U256C7 can serve as a hardware coprocessor or fixed-function accelerator alongside a host controller. Its 15,408 logic elements can implement parallel arithmetic pipelines, CRC engines, filters, or encryption-related datapaths, and the 516,096 RAM bits can hold lookup tables or intermediate buffers. The 168 I/Os allow direct host-bus interfacing and accelerator result transfer. The target's verified core supply is 1.2 V, while programmable I/O banks support board-level voltage compatibility that must be confirmed from the complete device documentation. This arrangement is attractive when deterministic hardware acceleration is preferable to executing the same workload in software.
推薦
推薦產品摘要
工程參考資料，適用於 EP3C16U256C7 — 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 | EP3C16U256C7N | EP3C16F256C7 | EP3C16F256I7N | EP3C16U256C6 | EP3C16U256C8 |
|---|---|---|---|---|---|---|
| Package | 256-LFBGA | 256-LFBGA | 256-LFBGA | 256-LFBGA | 256-LFBGA | 256-LFBGA |
| Brand | Intel/Altera | Intel/Altera | Intel/Altera | Intel/Altera | Intel/Altera | Intel/Altera |
| Logic Elements | 15,408 | 15,408 | 15,408 | 15,408 | 15,408 | 15,408 |
| Embedded RAM | 516,096 bits | 516,096 bits | 516,096 bits | 516,096 bits | 516,096 bits | 516,096 bits |
| User I/O Count | 168 | 168 | 168 | 168 | 168 | 168 |
| Process Technology | 65 nm | 65 nm | 65 nm | 65 nm | 65 nm | 65 nm |
| Speed or Order-Code Difference | C7 code | C7N code | F256C7 code | F256I7N code | C6 speed code | C8 speed code |
主要差異化特點
- Verified mid-density Cyclone III resource balance (對比EP3C16F256I7N)
- Higher C7 speed positioning than the same-family C6 option (對比EP3C16U256C6)
- Verified distributor pricing and availability (對比EP3C16U256C8)
- Direct resource equivalence within the Cyclone III 256-ball family (對比EP3C16U256C7N)
設計說明
The verified core supply is 1.2 V, but the complete device still requires the correct bank and auxiliary supplies. Follow the Cyclone III power-supply sequence and decoupling guidance rather than treating the core rail as the device's only power requirement. Place high-frequency decoupling capacitors close to the relevant BGA power balls, keep high-current return paths compact, and separate noisy I/O returns from sensitive core references.
A 256-LFBGA footprint requires a multilayer PCB with short, directly referenced power and ground connections. Provide a dense via array under the device where the manufacturer footprint permits, minimize loop area for switching current, and route the 168 possible user signals with controlled escape geometry. Validate the board stack-up, via-in-pad process, and solder-assembly thermal profile before releasing artwork.
Do not assume that the reported 437.5 MHz maximum device frequency guarantees the same board-level operating frequency. External clock jitter, package skew, I/O standard, load capacitance, and trace geometry determine the achievable interface rate. Use the Quartus timing analyzer with the real board constraints, preserve the recommended clock input arrangement, and avoid long unprotected stubs on high-speed outputs.
The most common sourcing mistake is assuming that all similarly numbered Cyclone III devices are exact substitutes. The EP3C16U256C7N, EP3C16F256C7, and EP3C16F256I7N may differ in speed, temperature grade, construction, or electrical characteristics. Before substitution, compare the manufacturer package drawings, pin-connection lists, timing reports, voltage tables, and qualification data. Also confirm that the programmer and configuration file support the selected ordering code.
合規資訊
The supplied verified excerpts do not explicitly state RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 status. No compliance claim has been inferred from the package type or distributor availability.
