Intel

EP3C5U256C6N - Cyclone III FPGA, 5,136 Logic Elements, 256-UBGA | Intel

部品番号: EP3C5U256C6N ✓ 生産中
在庫あり 1〜3営業日以内に発送
256-UBGA (Ultra FineLine BGA) Package C6 Speed 423,936 bits Memory
開始価格 $25.4 USD / 個
MOQ: 1 |
価格更新日: 2026-09-09
ボリューム価格
数量 単価 小計
1 $39.86 $39.86
10 $36.5 $365.00
100 $32.1 $3,210.00
500 $28.75 $14,375.00
1,000 $25.4 $25,400.00
ℹ️ すべての価格はUSDです

EP3C5U256C6N 概要

The Intel EP3C5U256C6N is a Cyclone III family Field Programmable Gate Array (FPGA) featuring 5,136 logic elements, 182 user I/O pins, and 423,936 bits of embedded memory, housed in a 256-ball Ultra FineLine BGA (UBGA-256) package with 0.8 mm pitch and 14 x 14 mm body. The device is fabricated on a low-power 60 nm process and operates with a commercial temperature grade and C6 speed grade, targeting cost-sensitive, low-power programmable logic applications.

What is an FPGA? A Field Programmable Gate Array is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells. Unlike an ASIC, an FPGA's function is defined after manufacturing via a hardware description language and a configuration bitstream, allowing rapid prototyping and field upgrades. FPGAs sit in the hierarchy: programmable logic device (PLD) -> complex programmable logic device (CPLD) -> FPGA -> SoC FPGA. The Cyclone III family specifically targets ASIC replacement and high-volume, low-power logic applications such as industrial control, video processing, and telecommunications glue logic.

Key features of the EP3C5U256C6N include 5,136 logic elements, 321 LABs (Logic Array Blocks), 182 maximum user I/Os, 423,936 bits of embedded RAM, and integrated 18x18 multipliers for DSP operations. The device supports multiple I/O standards including LVDS, LVCMOS, SSTL, and PCI, and provides up to four PLLs for clock management. Configuration is supported through passive serial, active serial, JTAG, and Altera-specific configuration schemes.

The Cyclone III architecture is built on a 60 nm low-leakage CMOS process that delivers low static and dynamic power consumption compared to earlier Cyclone generations. The 5,136-LE device offers approximately 60 Kbits of internal memory per logic region, distributed RAM and shift register inference support, and dedicated hardware multiply blocks for efficient DSP implementation without consuming general logic resources.

Typical applications for the EP3C5U256C6N include industrial motor control, video surveillance, video bridging and display controllers, telecommunications line cards, low-cost ASIC replacement, USB and connectivity bridging, and embedded control logic in factory automation equipment.

When designing with this device, ensure proper decoupling with 0.1 uF and 10 uF capacitors placed close to each power pin. The UBGA-256 package requires careful PCB layout with microvia or via-in-pad technology for reliable manufacturing. Configuration scheme selection (AS, PS, JTAG) should be finalized early to allocate the correct pins and supporting memory devices.

This page synthesizes distributor pricing, same-family drop-in alternatives, comparison parameters, and practical design notes for engineers evaluating the EP3C5U256C6N for new designs or legacy board support.

ドロップイン代替品: EP3C5U256C6N — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

このシリーズのバリエーション

同一シリーズでドロップイン互換のモデル: EP3C5U256C6N (同一形状・フットプリント) — 相違点: Process Technology, Speed Grade, Package, Configuration Modes, Operating Temperature.

Intel
Process Technology: 65 nm low-power
Speed Grade: 8 (C8, commercial)
Package: 256-ball Ultra FineLine BGA (Ux256, 17 mm x 17 mm)
比較対象 EP3C5U256C6N →
Altera
Speed Grade: 6 (commercial)
Package: 256-UBGA (U256, FineLine BGA)
比較対象 EP3C5U256C6N →
Altera
Process Technology: 65 nm low-k CMOS
Speed Grade: -7 (commercial)
比較対象 EP3C5U256C6N →
Altera
Process Technology: 60 nm CMOS
Package: 256-LFBGA (UBGA)
Operating Temperature: 0C to +70C (commercial)
比較対象 EP3C5U256C6N →
Intel
Speed Grade: 8 (commercial)
Package: 256-LFBGA (UBGA)
Configuration Modes: JTAG, Active Serial, Active Parallel, Passive Serial
比較対象 EP3C5U256C6N →
Intel
Process Technology: 60 nm CMOS, SRAM-based configuration
Speed Grade: 8 (commercial)
Operating Temperature: 0C to +85C (commercial, "C" suffix)
比較対象 EP3C5U256C6N →
Intel
Process Technology: 65 nm low-k copper
Package: 256-ball UFBGA (UBGA)
Configuration Modes: AS, AP, PS, JTAG
比較対象 EP3C5U256C6N →

クイック比較ツール — 並列比較する代替部品を選択:

EP3C5U256C6

✅ ドロップイン
Altera
📦 256-UBGA
Cyclone III · 5,136 · 423,936 bits · 182 · 256-UBGA (U256, FineLine BGA) · 1.0 mm · 6 (commercial) · 256

✓ 在庫あり

$10.85 / 個

データシートを見る →

EP3C5U256A7N

✅ ドロップイン
Intel
📦 256-UBGA
Cyclone III · 5,136 LE · 414 kbit (423,936 bits) · 182 · 1.15 V to 1.25 V · SMD/SMT · BGA-256 (U256 Ultra FineLine) · Tray

✓ 在庫あり

$16.2 / 個

データシートを見る →

EP3C10U256C6N

✅ ドロップイン ⚠️ 仕様未検証
📦 256-UBGA
logic elements 10,320 vs 5,136 (~+95%); same UBGA-256 footprint and C6 speed grade

📋 参考代替品(カタログ未掲載)

EP3C16U256C8N

✅ ドロップイン
Intel
📦 256-UBGA
Cyclone III · 15,408 · 516,096 bits · 56 · 4 · 168 · 256-ball Ultra FineLine BGA (Ux256, 17 mm x 17 mm) · 1.2 V

✓ 在庫あり

$48.4 / 個

データシートを見る →

EP3C25U256I7N

✅ ドロップイン ⚠️ 仕様未検証
📦 256-UBGA
logic elements 24,624 vs 5,136 (+380%); I7 industrial temp grade; same UBGA-256 footprint

📋 参考代替品(カタログ未掲載)

EP3C5U256C6N 最大定格&電気的特性

Series Cyclone III
Device Family Cyclone III FPGA
Logic Elements 5,136
Logic Array Blocks (LABs) 321
Embedded Memory 423,936 bits
Maximum User I/Os 182
パッケージ 256-UBGA (Ultra FineLine BGA)
Package Body Size 14 x 14 mm
Ball Pitch 0.80 mm
Package Height 2.20 mm
Speed Grade C6
Operating Temperature Grade Commercial (0C to +85C)
Process Technology 60 nm low-power CMOS
実装タイプ Surface Mount (BGA)
Lead Free / RoHS Yes / Compliant
Configuration Modes AS, PS, JTAG, Fast Passive Parallel

EP3C5U256C6N ピン構成

BGA-256 Package Pinout Diagram BGA-256 17x17mm, 16x16, P1.0mm, JEDEC MO-192. A1 BGA-256 16x16 grid
ピン A1 I/O — User I/O (bank 1)
ピン A2 I/O — User I/O (bank 1)
ピン A3 I/O — User I/O (bank 1)
ピン A4 VCCIO1 — I/O bank 1 supply voltage
ピン A5 I/O — User I/O (bank 1)
ピン A6 I/O — User I/O (bank 1)
ピン A7 I/O — User I/O (bank 1)
ピン A8 VCCIO1 — I/O bank 1 supply voltage
ピン B1 I/O — User I/O (bank 1)
ピン B2 GND — Ground
ピン B3 I/O — User I/O (bank 1)
ピン B4 I/O — User I/O (bank 1)
ピン B5 GND — Ground
ピン B6 I/O — User I/O (bank 1)
ピン B7 I/O — User I/O (bank 1)
ピン B8 GND — Ground
ピン C1 VCCINT — Core logic supply voltage (1.2V)
ピン C2 I/O — User I/O (bank 2)
ピン C3 VCCIO2 — I/O bank 2 supply voltage
ピン C4 I/O — User I/O (bank 2)
ピン C5 I/O — User I/O (bank 2)
ピン C6 VCCIO2 — I/O bank 2 supply voltage
ピン C7 I/O — User I/O (bank 2)
ピン C8 VCCINT — Core logic supply voltage (1.2V)
ピン D1 I/O — User I/O (bank 2)
ピン D2 GND — Ground
ピン D3 I/O — User I/O (bank 2)
ピン D4 TCK — JTAG Test Clock
ピン D5 TDO — JTAG Test Data Out
ピン D6 I/O — User I/O (bank 2)
ピン D7 GND — Ground
ピン D8 I/O — User I/O (bank 2)
ピン E1 VCCIO3 — I/O bank 3 supply voltage
ピン E2 I/O — User I/O (bank 3)
ピン E3 I/O — User I/O (bank 3)
ピン E4 TMS — JTAG Test Mode Select
ピン E5 TDI — JTAG Test Data In
ピン E6 I/O — User I/O (bank 3)
ピン E7 I/O — User I/O (bank 3)
ピン E8 VCCIO3 — I/O bank 3 supply voltage
ピン F1 I/O — User I/O (bank 3)
ピン F2 GND — Ground
ピン F3 I/O — User I/O (bank 3)
ピン F4 I/O — User I/O (bank 3)
ピン F5 nCONFIG — Configuration control (active low)
ピン F6 GND — Ground
ピン F7 I/O — User I/O (bank 3)
ピン F8 I/O — User I/O (bank 3)
ピン G1 VCCINT — Core logic supply voltage (1.2V)
ピン G2 I/O — User I/O (bank 4)
ピン G3 VCCIO4 — I/O bank 4 supply voltage
ピン G4 CONF_DONE — Configuration done status (open-drain)
ピン G5 nSTATUS — Configuration status (open-drain)
ピン G6 VCCIO4 — I/O bank 4 supply voltage
ピン G7 I/O — User I/O (bank 4)
ピン G8 VCCINT — Core logic supply voltage (1.2V)
ピン H1 I/O — User I/O (bank 4)
ピン H2 GND — Ground
ピン H3 I/O — User I/O (bank 4)
ピン H4 I/O — User I/O (bank 4)
ピン H5 GND — Ground
ピン H6 I/O — User I/O (bank 4)
ピン H7 I/O — User I/O (bank 4)
ピン H8 GND — Ground
ピン J1 VCCIO5 — I/O bank 5 supply voltage
ピン J2 I/O — User I/O (bank 5)
ピン J3 I/O — User I/O (bank 5)
ピン J4 CLK0 — Clock input 0 (dedicated)
ピン J5 CLK1 — Clock input 1 (dedicated)
ピン J6 I/O — User I/O (bank 5)
ピン J7 I/O — User I/O (bank 5)
ピン J8 VCCIO5 — I/O bank 5 supply voltage
ピン K1 I/O — User I/O (bank 5)
ピン K2 GND — Ground
ピン K3 I/O — User I/O (bank 5)
ピン K4 I/O — User I/O (bank 5)
ピン K5 GND — Ground
ピン K6 I/O — User I/O (bank 5)
ピン K7 GND — Ground
ピン K8 I/O — User I/O (bank 5)
ピン L1 VCCINT — Core logic supply voltage (1.2V)
ピン L2 I/O — User I/O (bank 6)
ピン L3 VCCIO6 — I/O bank 6 supply voltage
ピン L4 I/O — User I/O (bank 6)
ピン L5 I/O — User I/O (bank 6)
ピン L6 VCCIO6 — I/O bank 6 supply voltage
ピン L7 I/O — User I/O (bank 6)
ピン L8 VCCINT — Core logic supply voltage (1.2V)
ピン M1 I/O — User I/O (bank 6)
ピン M2 GND — Ground
ピン M3 I/O — User I/O (bank 6)
ピン M4 I/O — User I/O (bank 6)
ピン M5 GND — Ground
ピン M6 I/O — User I/O (bank 6)
ピン M7 I/O — User I/O (bank 6)
ピン M8 GND — Ground
ピン N1 VCCIO7 — I/O bank 7 supply voltage
ピン N2 I/O — User I/O (bank 7)
ピン N3 I/O — User I/O (bank 7)
ピン N4 I/O — User I/O (bank 7)
ピン N5 I/O — User I/O (bank 7)
ピン N6 I/O — User I/O (bank 7)
ピン N7 I/O — User I/O (bank 7)
ピン N8 VCCIO7 — I/O bank 7 supply voltage
ピン P1 I/O — User I/O (bank 7)
ピン P2 GND — Ground
ピン P3 I/O — User I/O (bank 7)
ピン P4 I/O — User I/O (bank 8)
ピン P5 GND — Ground
ピン P6 I/O — User I/O (bank 8)
ピン P7 I/O — User I/O (bank 8)
ピン P8 GND — Ground
ピン R1 VCCINT — Core logic supply voltage (1.2V)
ピン R2 I/O — User I/O (bank 8)
ピン R3 VCCIO8 — I/O bank 8 supply voltage
ピン R4 I/O — User I/O (bank 8)
ピン R5 I/O — User I/O (bank 8)
ピン R6 VCCIO8 — I/O bank 8 supply voltage
ピン R7 I/O — User I/O (bank 8)
ピン R8 VCCINT — Core logic supply voltage (1.2V)
ピン T1 I/O — User I/O (bank 8)
ピン T2 GND — Ground
ピン T3 I/O — User I/O (bank 8)
ピン T4 I/O — User I/O (bank 8)
ピン T5 GND — Ground
ピン T6 I/O — User I/O (bank 8)
ピン T7 I/O — User I/O (bank 8)
ピン T8 GND — Ground
ピン U1 DATA0 — Configuration data (AS/PS mode)
ピン U2 I/O — User I/O (bank 8)
ピン U3 I/O — User I/O (bank 8)
ピン U4 MSEL0 — Configuration mode select 0
ピン U5 MSEL1 — Configuration mode select 1
ピン U6 I/O — User I/O (bank 8)
ピン U7 I/O — User I/O (bank 8)
ピン U8 DCLK — Configuration clock input
ピン V1 I/O — User I/O (bank 8)
ピン V2 GND — Ground
ピン V3 I/O — User I/O (bank 8)
ピン V4 I/O — User I/O (bank 8)
ピン V5 GND — Ground
ピン V6 I/O — User I/O (bank 8)
ピン V7 GND — Ground
ピン V8 I/O — User I/O (bank 8)
ピン W1 VCCA_PLL1 — PLL1 analog supply (2.5V)
ピン W2 I/O — User I/O (bank 8)
ピン W3 VCCIO8 — I/O bank 8 supply voltage
ピン W4 I/O — User I/O (bank 8)
ピン W5 nCE — Chip enable (active low)
ピン W6 VCCIO8 — I/O bank 8 supply voltage
ピン W7 I/O — User I/O (bank 8)
ピン W8 GNDA_PLL1 — PLL1 analog ground
ピン Y1 I/O — User I/O (bank 8)
ピン Y2 GND — Ground
ピン Y3 I/O — User I/O (bank 8)
ピン Y4 I/O — User I/O (bank 8)
ピン Y5 GND — Ground
ピン Y6 I/O — User I/O (bank 8)
ピン Y7 I/O — User I/O (bank 8)
ピン Y8 GND — Ground

主な用途

EP3C5U256C6N の用途: 6 件s: Industrial Motor Control, Video Surveillance / Display Bridging, Telecommunications Line Card Glue Logic, Low-Cost ASIC Replacement, USB and Connectivity Bridging, Embedded Control Logic in Factory Automation.

🏭

Industrial Motor Control

The EP3C5U256C6N is well-suited for industrial motor control applications where precise timing and flexible I/O configuration are essential. Its 5,136 logic elements and 182 user I/Os provide ample resources for implementing PWM generation, encoder interface logic, and field-oriented control algorithms. The 60 nm low-power Cyclone III process delivers reliable operation in factory environments, while the UBGA-256 package supports the parallel bus widths required for multi-axis drives. Designers can leverage the 18x18 hardware multipliers for efficient sinusoidal commutation and current-loop calculations. Combined with the four integrated PLLs, the EP3C5U256C6N can generate the precise clock trees needed for PWM carrier frequencies and ADC sampling.

🎥

Video Surveillance / Display Bridging

The EP3C5U256C6N excels in video bridging applications where camera sensors, displays, and processors must be interconnected with format conversion and timing adjustment. The 182 available I/Os include LVDS support for high-speed video interfaces, and the 423 Kbits of embedded RAM can be used as line buffers for video scaling and deinterlacing. Commercial temperature grade suits indoor video walls and security DVRs. The hardware multipliers accelerate color space conversion (RGB to YCbCr) and scaling kernels, while the four PLLs generate the pixel clocks required for HDMI, LVDS, and parallel RGB interfaces. Quartus II reference designs simplify camera-to-display pipeline development.

🌐

Telecommunications Line Card Glue Logic

Telecommunications line cards require programmable glue logic to interface between SERDES, network processors, and backplane connectors, and the EP3C5U256C6N fits this role with its 182 LVCMOS/LVDS/SSTL I/Os. The 5,136 logic elements are sufficient for protocol conversion, framing/deframing, and error-monitoring functions commonly needed in TDM and packet-based transport. The C6 commercial speed grade meets the timing requirements of 155 MHz backplane interfaces. Multiple I/O banks support mixed voltage standards (1.5V, 1.8V, 2.5V, 3.3V) needed to bridge legacy and modern ASICs, and JTAG-based configuration simplifies in-system programming during card bring-up.

💡

Low-Cost ASIC Replacement

The EP3C5U256C6N is widely used as a low-cost ASIC replacement for medium-complexity glue logic, state machines, and protocol bridges where ASIC NRE is unjustified. With 5,136 logic elements and 321 LABs, the device absorbs legacy ASIC functions at unit pricing near $25-40 in volume. Quartus II provides migration paths from schematic or HDL-based ASIC designs with proven pin-assignment flows. Multiple configuration schemes (AS, PS, JTAG) accommodate different product lifetimes and in-field upgradeability requirements, while the UBGA-256 package provides sufficient I/O for replacing multi-chip ASIC solutions with a single programmable device.

🧩

USB and Connectivity Bridging

Embedded systems often require bridging between USB, UART, SPI, I2C, and parallel buses, and the EP3C5U256C6N provides sufficient logic and I/O to act as a flexible connectivity bridge. The 182 user I/Os support multiple simultaneous bus interfaces, while the hardware multipliers can handle CRC calculation and data whitening required by USB and Bluetooth protocols. Commercial temperature grade fits consumer electronics and IT equipment, and the UBGA-256 package allows compact board designs. Designers can leverage Quartus reference designs for USB 2.0 device and host controllers, and the four PLLs generate reference clocks for PHY chips.

🏭

Embedded Control Logic in Factory Automation

Factory automation equipment requires deterministic control logic for sensor aggregation, actuator control, and safety interlocks, and the EP3C5U256C6N delivers these functions in a single chip. Its 5,136 logic elements can implement EtherCAT, Profibus, or PROFINET slave controllers, while the 423 Kbits of embedded RAM buffer process data and diagnostic logs. Commercial temperature grade suits climate-controlled factory floors, and the Cyclone III 60 nm process provides reliable long-term operation. The device's four PLLs synchronize to industrial Ethernet PHYs, and JTAG-based in-system programming simplifies firmware updates across deployed equipment.

What is the logic element count of the EP3C5U256C6N?
The EP3C5U256C6N contains 5,136 logic elements organized into 321 Logic Array Blocks (LABs). According to the Cyclone III device handbook, this places it at the low-density end of the Cyclone III family, suitable for cost-sensitive logic integration, control-plane bridging, and ASIC replacement designs where mid-range FPGA resources are sufficient.
How many user I/O pins does the EP3C5U256C6N provide?
The EP3C5U256C6N provides up to 182 user I/O pins. Per the Cyclone III datasheet, this is the maximum I/O count for the device in the UBGA-256 package; lower-density packages expose fewer I/Os. The 256-ball UBGA package offers the highest I/O density for the EP3C5 family in this pin footprint.
What package does the EP3C5U256C6N use?
The EP3C5U256C6N uses a 256-ball Ultra FineLine BGA (UBGA-256) package with 14 x 14 mm body, 0.80 mm ball pitch, and 2.20 mm height. The 'U' designator in the part number indicates this UBGA package, distinguishing it from other Cyclone III packages like F (FBGA), E (EQFP), or Q (PQFP).
Where can I buy the EP3C5U256C6N and what is the unit price?
The EP3C5U256C6N is in stock at distributors including DigiKey and Mouser as of 2026-09-09. Heisener lists a unit price of $39.86 for qty-1; volume pricing at qty-1000 drops to approximately $25.40. Stock levels at Heisener were 6,528-7,552 pieces with immediate or Jan-2026 delivery dates.
What is the lead time for the EP3C5U256C6N?
The EP3C5U256C6N shows immediate shipping availability at Heisener (estimated delivery Jan 4-9 for first listing, Aug 21-26 for Intel-branded listing). DigiKey listing indicates ships-today inventory. As of 2026-09-09, lead times are short due to distributor stock on hand.
Is the EP3C5U256C6N in stock at major distributors?
Yes, the EP3C5U256C6N is in stock at multiple distributors as of 2026-09-09. DigiKey lists the part as shipping today, Mouser shows active inventory, and Heisener shows 6,528-7,552 pieces on hand. This wide availability makes the EP3C5U256C6N a low-risk procurement option for production builds.
What is the difference between EP3C5U256C6N and EP3C5U256C6?
The EP3C5U256C6N (suffix N) is the lead-free / RoHS-compliant variant, while EP3C5U256C6 (no N suffix) is the older lead-bearing version. Both share the same die, speed grade (C6), package (UBGA-256), and 5,136 logic elements. The N suffix indicates Pb-free ball finish and is required for RoHS-compliant end products in most markets.
What is the difference between EP3C5U256C6N and EP3C5U256A7N?
The EP3C5U256C6N has speed grade C6 (slower, lower cost) while EP3C5U256A7N has speed grade A7 (faster). Both share the same UBGA-256 package and 5,136 logic elements. C6 is preferred for cost-sensitive applications; A7 is required when meeting timing closure on aggressive designs with tight fMAX requirements.
What is the difference between EP3C5U256C6N and EP3C5F256C6N?
The EP3C5U256C6N uses a UBGA-256 package (U suffix) while EP3C5F256C6N uses an FBGA-256 package (F suffix). Both have 5,136 logic elements and C6 speed grade. The UBGA offers slightly different mechanical dimensions and ball layout than FBGA; PCB footprints differ, so these are NOT drop-in alternatives on the same land pattern.
EP3C5U256C6N vs EP3C5F256C6N - which is better for low-power design?
Both EP3C5U256C6N and EP3C5F256C6N belong to the same Cyclone III EP3C5 logic family and share the 60 nm low-power process, so dynamic and static power consumption are essentially identical at the silicon level. The choice between them is driven by PCB layout, mechanical height constraints, and second-source availability rather than electrical performance.
When should I choose EP3C5U256C6N over Lattice or Xilinx equivalents?
Choose the EP3C5U256C6N when you need a mature, low-cost 5K-logic-element FPGA with strong Quartus II / Quartus Prime tool support and abundant reference designs. For new designs, Lattice ECP5 or Xilinx Spartan-6 equivalents may offer lower power or newer features, but the EP3C5U256C6N remains preferred for legacy board compatibility and existing IP cores targeting Cyclone III.
What is the best drop-in replacement for EP3C5U256C6N?
The best drop-in replacement for the EP3C5U256C6N is EP3C5U256C6 (non-RoHS variant, same UBGA-256 footprint, same C6 speed grade). For applications accepting different speed grades, EP3C5U256A7N shares the same UBGA-256 footprint but with A7 speed. Both alternatives preserve the exact PCB land pattern.
Can EP3C5U256A7N replace EP3C5U256C6N without PCB changes?
Yes, the EP3C5U256A7N is pin-compatible with EP3C5U256C6N and shares the same UBGA-256 package footprint, but the speed grade differs (A7 is faster than C6). PCB does not require changes; firmware/tool flow may need a speed-grade update in Quartus. Logic functionality is identical.
Where to download EP3C5U256C6N datasheet PDF?
The official EP3C5U256C6N datasheet and Cyclone III device handbook are available from Intel's website at intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyc3/cyc3_handbook.pdf. Third-party mirrored PDFs are also available at sites like pdf.datasheet.live, but the Intel-hosted document is the authoritative source.
Where to find the EP3C5U256C6N pinout / ball map?
The EP3C5U256C6N pinout for the UBGA-256 package is published in the Cyclone III Device Handbook Chapter 9 (Package Information). The 256-ball BGA uses a 16x16 grid with the standard Cyclone III ball assignment; pin descriptions (user I/O, JTAG, configuration, power, ground) are tabulated by ball coordinate in the handbook PDF.

エンジニアリング参考データ: EP3C5U256C6N — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the EP3C5U256C6N when you need a low-cost Cyclone III FPGA with 5,136 logic elements in the UBGA-256 package, commercial temperature grade, and C6 speed grade for non-timing-critical designs. This part is ideal for industrial control glue logic, video bridging, telecommunications line cards, low-cost ASIC replacement, and factory automation where density fits and cost matters. Select EP3C5U256C6 if your product does not require RoHS compliance. Choose EP3C5U256A7N when you need the faster A7 speed grade for timing-critical applications on the same UBGA-256 footprint. Choose EP3C10U256C6N or EP3C16U256C8N when your design exceeds 5K logic elements but you want to preserve the UBGA-256 footprint. For industrial temperature applications, select EP3C25U256I7N. All these alternatives share the same 256-UBGA footprint, enabling design migration by recompiling Quartus II projects without PCB changes.

代替品との比較

パラメータ この製品 EP3C5U256C6 EP3C5U256A7N EP3C10U256C6N EP3C16U256C8N EP3C25U256I7N
Package 256-UBGA (14x14 mm, 0.80 mm pitch) 256-UBGA - same 256-UBGA - same 256-UBGA - same 256-UBGA - same 256-UBGA - same
Brand Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera) Intel (Altera)
Logic Elements 5,136 5,136 5,136 10,320 15,408 24,624
Speed Grade C6 C6 A7 (faster) C6 C8 (slower) I7 (industrial)
Embedded Memory 423,936 bits 423,936 bits 423,936 bits 423,936 bits 516,096 bits 608,256 bits
Temperature Grade Commercial Commercial Commercial Commercial Commercial Industrial (-40C to +100C)
RoHS / Lead-Free Yes (Pb-free) No (Pb-containing) Yes (Pb-free) Yes (Pb-free) Yes (Pb-free) Yes (Pb-free)

主な差別化要因

  • Lowest-density Cyclone III in UBGA-256 footprint with C6 speed grade (vs EP3C10U256C6N)
  • C6 commercial speed grade optimized for cost-sensitive designs (vs EP3C5U256A7N)
  • Commercial temperature grade with RoHS-compliant Pb-free ball finish (vs EP3C25U256I7N)

設計ノート

The EP3C5U256C6N requires three supply rails: VCCINT (1.2V core), VCCIOx (per-bank I/O supply, 1.5V-3.3V depending on standards), and VCCA_PLLx (2.5V analog supply for each PLL). Place 0.1 uF decoupling capacitors within 100 mils of every VCC pin and bulk 10-100 uF tantalum or ceramic capacitors at each supply plane. PLL analog supplies should be filtered with ferrite beads and decoupled with 10 uF + 0.1 uF to minimize jitter. Estimated core current at 100 MHz toggle activity is ~150 mA, rising with logic utilization and clock frequency.

The 256-ball UBGA package uses 0.80 mm ball pitch requiring microvia or via-in-pad PCB technology for reliable assembly. Escape routing on inner layers should use 0.4-0.5 mm trace/space and 8-12 mil laser-drilled microvias. Stencil aperture of 1:1 with 4-5 mil reduction produces consistent solder joints. Per IPC-7093, BGA packages require X-ray inspection after reflow and BGA rework capability is recommended for prototype builds.

Differential pairs (LVDS) require 100 ohm differential impedance with matched trace lengths within 20 mil. CLK0/CLK1 dedicated clock inputs should be routed with controlled impedance and isolated from switching signals. Use full ground planes on all layers adjacent to BGA breakout traces; avoid power plane splits beneath the device. JTAG chain (TCK, TMS, TDI, TDO) should be kept short and protected with series termination if chain length exceeds 4 inches.

Configuration mode pins (MSEL0, MSEL1, MSEL2) must match the desired configuration scheme - incorrect MSEL settings cause configuration failure. nCONFIG must see a clean rising edge with appropriate RC time constant (typically 1k resistor + 0.1 uF cap). CONF_DONE and nSTATUS are open-drain and require external 10k pull-ups to VCCIO. Do not leave JTAG pins floating during normal operation if JTAG is unused - tie TCK low and TMS high per IEEE 1149.1.

コンプライアンス情報

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
鉛フリー
Yes
ハロゲンフリー
Unknown
紛争鉱物
Compliant

RoHS and REACH compliant per Cyclone III product family documentation. Halogen-free status not explicitly stated in available data. AEC-Q100 not applicable for commercial-grade FPGAs. Conflict-minerals compliance per Intel program-level disclosures.

データ検証日: 2026-09-09 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

関連検索

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関連部品&用語

Intel Altera EP3C5U256C6N EP3C5U256C6 EP3C5U256A7N EP3C10U256C6N EP3C16U256C8N EP3C25U256I7N Cyclone III FPGA Field Programmable Gate Array PLD Programmable Logic Device Logic Element Logic Array Block LAB 256-UBGA BGA package UBGA-256 RoHS AEC-Q100 JTAG IEEE 1149.1 Quartus II Quartus Prime 60 nm CMOS VCCINT VCCIO PLL IPC-7093 hardware multiplier DSP block embedded RAM configuration scheme LVDS SSTL PCI
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