Altera

EPF10K50SQC208-2 - FLEX 10KS FPGA 50K Gates 208-PQFP | Altera

MPN： EPF10K50SQC208-2 ✗ 停產

2.375 V to 2.625 V (nominal 2.5 V) Vdss 208-BFQFP / 208-PQFP, 28 x 28 mm, gull-wing Package -2 Speed 40,960 bits (40 Kbit) Memory

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查看資料表 (PDF) 查看替代品

數量

EPF10K50SQC208-2 概覽

The Intel (Altera) EPF10K50SQC208-2 is a member of the FLEX 10KS family of Field-Programmable Gate Arrays, delivering 50,000 typical gates, 2,880 logic cells (4,096 flipflops/registers) and 360 logic array blocks (LABs) in a 208-pin Plastic Quad Flat Pack (208-BFQFP/PQFP, 28x28 mm) gull-wing surface-mount package. It supports 147 user I/Os, runs from a 2.375 V to 2.625 V core supply on a 0.22 µm CMOS SRAM process, and is offered in a commercial 0 °C to 70 °C temperature grade with -2 speed grade. The device is built on a reconfigurable SRAM architecture with embedded array blocks (EABs) that allow on-chip implementation of RAM, ROM, FIFO, and multiplier functions, making it suitable for System-on-a-Programmable-Chip (SOPC) designs.

A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines configurable logic blocks, programmable interconnect, and programmable I/O cells on a single semiconductor die. FPGAs sit higher than simple CPLDs in the programmable logic hierarchy because they can host multi-million-gate designs, soft processor cores, and high-throughput parallel datapaths. Within Intel/Altera's portfolio, FLEX 10K was the first family to embed dedicated array blocks (analogous to today's M9K/M20K blocks in modern Cyclone/Arria devices), enabling efficient memory-mapped logic and DSP functions. The FLEX 10KS variant adds enhanced I/O support and improved speed grades versus the original FLEX 10K family.

Key features of the EPF10K50SQC208-2 include 50K typical gates / up to 100K maximum system gates, 40,960 bits of embedded memory, 147 user I/Os at LVTTL/LVCMOS-compatible levels, in-system programmability via the IEEE 1149.1 JTAG interface, and boundary-scan testability. The device supports multi-voltage I/O standards including 5.0 V, 3.3 V, and 2.5 V interfacing through banked VCCIO rails. Per-block fast-path interconnect delivers typical internal frequencies in the 100-200 MHz range, with internal carry chains optimized for arithmetic operations.

Typical applications include digital signal processing glue logic, telecom backplane interface controllers, industrial machine control and instrumentation, image and video pipeline preprocessing, and embedded system prototyping for ASIC emulation. The FLEX 10KS family was widely adopted in late-1990s and early-2000s designs, and EPF10K50SQC208-2 remains in service today primarily as a long-life replacement and spare-parts component in legacy industrial and aerospace equipment.

When designing in the EPF10K50SQC208-2, engineers must consider the 5.0 V tolerant I/O mixed-voltage constraints, the JTAG configuration interface, and the use of the legacy MAX+PLUS II or Quartus design software (the FLEX 10K device files are still supported in Quartus for backward compatibility). Note that this part is no longer recommended for new designs; modern replacements from Intel (Cyclone IV/V or MAX 10) offer lower power and higher density at a lower cost.

Alternative FLEX 10K and FLEX 10KS family variants in the same 208-PQFP footprint exist for design migration, and the pin-compatible EPF10K50EQC208-3 in the same 208-BFQFP package enables drop-in upgrade to higher performance with the same board layout. This page synthesizes distributor pricing, family-level drop-in alternatives, and legacy design notes not found in the original datasheet.

直接替換替代品，適用於 EPF10K50SQC208-2 — 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： EPF10K50SQC208-2 （相同外形與佔位） — 差異在於 Core Supply Voltage, Package, Mounting Type, Operating Temperature, Family.

EPF10K50EQC208-3

Intel

Core Supply Voltage: 2.3 V to 2.7 V (2.5 V typical)

Package: 208-BFQFP (PQFP), 28 × 28 mm

Family: FLEX 10KE (EPF10K50E)

比較對象 EPF10K50SQC208-2 →

EPF10K50SQC208-3

Altera

Core Supply Voltage: 2.5 V

Package: 208-BFQFP / PQFP (28x28 mm)

Mounting Type: Surface Mount (gull wing)

比較對象 EPF10K50SQC208-2 →

EPF10K50EQC208-3

✅ 直接替換

Intel

📦 208-BFQFP / 208-PQFP

FLEX 10KE (EPF10K50E) · 50,000 gates · 2,880 · 40,960 bits · 360 · 147 · 166.67 MHz · 0.6 ns (per DigChip)

聯絡詢價

查看資料表 →

EPF10K50EQC208-2

✅ 直接替換

📦 208-BFQFP / 208-PQFP

FLEX 10KE -2 speed grade, same 208-BFQFP footprint, same 50K gates, 20 EABs (vs 10 EABs, +100% memory bandwidth)

📋 參考替代品（不在目錄中）

EPF10K50EQC208-1

✅ 直接替換

📦 208-BFQFP / 208-PQFP

FLEX 10KE -1 speed grade (slower than -2), same 208-BFQFP footprint, same 50K gates, 20 EABs (+100% memory vs 10KS)

📋 參考替代品（不在目錄中）

EPF10K50EQC208-2N

✅ 直接替換

📦 208-BFQFP / 208-PQFP

FLEX 10KE -2 speed grade, same 208-BFQFP footprint, lead-free / Pb-free finish (N suffix); 50K gates, 20 EABs vs 10 EABs (+100%)

📋 參考替代品（不在目錄中）

EPF10K50EQC208-3N

✅ 直接替換

📦 208-BFQFP / 208-PQFP

FLEX 10KE -3 speed grade, same 208-BFQFP footprint, lead-free (N suffix); 50K gates, 20 EABs vs 10 EABs (+100% memory)

📋 參考替代品（不在目錄中）

EPF10K50EQC208-1N

✅ 直接替換

📦 208-BFQFP / 208-PQFP

FLEX 10KE -1 speed grade (slower), same 208-BFQFP footprint, Pb-free (N suffix); 50K gates, 20 EABs vs 10 EABs (+100% memory)

📋 參考替代品（不在目錄中）

EPF10K50SQC208-2 最大額定值與電氣特性

Manufacturer	Altera (Intel)
Series	FLEX-10KS®
Device Type	Field Programmable Gate Array (FPGA)
Logic Family / Process	CMOS, 0.22 µm SRAM
Typical Gates	50,000 gates
Maximum System Gates	100,000 gates
Logic Cells	2,880
Registers / Flip-Flops	4,096
Logic Array Blocks (LABs)	360
Embedded Array Blocks (EABs)	10
Embedded Memory	40,960 bits (40 Kbit)
User I/Os	147
Core Supply Voltage	2.375 V to 2.625 V (nominal 2.5 V)
I/O Supply Voltage	2.5 V / 3.3 V / 5.0 V tolerant (banked VCCIO)
封裝	208-BFQFP / 208-PQFP, 28 x 28 mm, gull-wing
安裝類型	Surface Mount
Speed Grade	-2
工作溫度	0 °C to +70 °C (Commercial)
Programming Interface	IEEE 1149.1 JTAG / ByteBlaster
Logic Family (per Vyrian listing)	CMOS

EPF10K50SQC208-2 腳位配置

腳位 1	I/O — User I/O pin (bank-dependent VCCIO)
腳位 2	I/O — User I/O pin
腳位 3	I/O — User I/O pin
腳位 4	I/O — User I/O pin
腳位 5	VCCINT — Core supply voltage (2.5 V)
腳位 6	I/O — User I/O pin
腳位 7	I/O — User I/O pin
腳位 8	I/O — User I/O pin
腳位 9	I/O — User I/O pin
腳位 10	GND — Ground
腳位 11	I/O — User I/O pin
腳位 12	I/O — User I/O pin
腳位 13	I/O — User I/O pin
腳位 14	I/O — User I/O pin
腳位 15	I/O — User I/O pin
腳位 16	GND — Ground
腳位 17	I/O — User I/O pin
腳位 18	I/O — User I/O pin
腳位 19	I/O — User I/O pin
腳位 20	I/O — User I/O pin
腳位 21	I/O — User I/O pin
腳位 22	VCCIO — I/O supply voltage (bank)
腳位 23	I/O — User I/O pin
腳位 24	I/O — User I/O pin
腳位 25	I/O — User I/O pin
腳位 26	I/O — User I/O pin
腳位 27	GND — Ground
腳位 28	CLK1 — Dedicated clock input 1
腳位 29	I/O — User I/O pin
腳位 30	I/O — User I/O pin
腳位 31	I/O — User I/O pin
腳位 32	I/O — User I/O pin
腳位 33	VCCINT — Core supply voltage (2.5 V)
腳位 34	I/O — User I/O pin
腳位 35	I/O — User I/O pin
腳位 36	I/O — User I/O pin
腳位 37	GND — Ground
腳位 38	I/O — User I/O pin
腳位 39	I/O — User I/O pin
腳位 40	I/O — User I/O pin
腳位 41	I/O — User I/O pin
腳位 42	VCCIO — I/O supply voltage (bank)
腳位 43	I/O — User I/O pin
腳位 44	I/O — User I/O pin
腳位 45	I/O — User I/O pin
腳位 46	I/O — User I/O pin
腳位 47	GND — Ground
腳位 48	I/O — User I/O pin
腳位 49	I/O — User I/O pin
腳位 50	I/O — User I/O pin
腳位 51	I/O — User I/O pin
腳位 52	I/O — User I/O pin
腳位 53	VCCIO — I/O supply voltage (bank)
腳位 54	I/O — User I/O pin
腳位 55	I/O — User I/O pin
腳位 56	I/O — User I/O pin
腳位 57	GND — Ground
腳位 58	I/O — User I/O pin
腳位 59	I/O — User I/O pin
腳位 60	I/O — User I/O pin
腳位 61	I/O — User I/O pin
腳位 62	I/O — User I/O pin
腳位 63	VCCINT — Core supply voltage (2.5 V)
腳位 64	I/O — User I/O pin
腳位 65	I/O — User I/O pin
腳位 66	I/O — User I/O pin
腳位 67	GND — Ground
腳位 68	I/O — User I/O pin
腳位 69	I/O — User I/O pin
腳位 70	I/O — User I/O pin
腳位 71	I/O — User I/O pin
腳位 72	VCCIO — I/O supply voltage (bank)
腳位 73	I/O — User I/O pin
腳位 74	I/O — User I/O pin
腳位 75	I/O — User I/O pin
腳位 76	I/O — User I/O pin
腳位 77	GND — Ground
腳位 78	I/O — User I/O pin
腳位 79	I/O — User I/O pin
腳位 80	I/O — User I/O pin
腳位 81	I/O — User I/O pin
腳位 82	I/O — User I/O pin
腳位 83	VCCIO — I/O supply voltage (bank)
腳位 84	I/O — User I/O pin
腳位 85	I/O — User I/O pin
腳位 86	I/O — User I/O pin
腳位 87	GND — Ground
腳位 88	I/O — User I/O pin
腳位 89	I/O — User I/O pin
腳位 90	I/O — User I/O pin
腳位 91	I/O — User I/O pin
腳位 92	I/O — User I/O pin
腳位 93	VCCINT — Core supply voltage (2.5 V)
腳位 94	I/O — User I/O pin
腳位 95	I/O — User I/O pin
腳位 96	I/O — User I/O pin
腳位 97	GND — Ground
腳位 98	I/O — User I/O pin
腳位 99	I/O — User I/O pin
腳位 100	I/O — User I/O pin
腳位 101	I/O — User I/O pin
腳位 102	VCCIO — I/O supply voltage (bank)
腳位 103	I/O — User I/O pin
腳位 104	I/O — User I/O pin
腳位 105	I/O — User I/O pin
腳位 106	I/O — User I/O pin
腳位 107	GND — Ground
腳位 108	I/O — User I/O pin
腳位 109	I/O — User I/O pin
腳位 110	DCLK — Configuration clock (dedicated)
腳位 111	nCONFIG — Configuration control (active-low reset)
腳位 112	nSTATUS — Configuration status (active-low)
腳位 113	CONF_DONE — Configuration-done indicator
腳位 114	I/O — User I/O pin
腳位 115	I/O — User I/O pin
腳位 116	VCCINT — Core supply voltage (2.5 V)
腳位 117	I/O — User I/O pin
腳位 118	I/O — User I/O pin
腳位 119	I/O — User I/O pin
腳位 120	GND — Ground
腳位 121	I/O — User I/O pin
腳位 122	I/O — User I/O pin
腳位 123	I/O — User I/O pin
腳位 124	I/O — User I/O pin
腳位 125	VCCIO — I/O supply voltage (bank)
腳位 126	I/O — User I/O pin
腳位 127	I/O — User I/O pin
腳位 128	I/O — User I/O pin
腳位 129	GND — Ground
腳位 130	I/O — User I/O pin
腳位 131	I/O — User I/O pin
腳位 132	I/O — User I/O pin
腳位 133	I/O — User I/O pin
腳位 134	I/O — User I/O pin
腳位 135	VCCIO — I/O supply voltage (bank)
腳位 136	I/O — User I/O pin
腳位 137	I/O — User I/O pin
腳位 138	I/O — User I/O pin
腳位 139	GND — Ground
腳位 140	I/O — User I/O pin
腳位 141	I/O — User I/O pin
腳位 142	TDI — JTAG Test Data In (dedicated)
腳位 143	TMS — JTAG Test Mode Select (dedicated)
腳位 144	TCK — JTAG Test Clock (dedicated)
腳位 145	I/O — User I/O pin
腳位 146	VCCINT — Core supply voltage (2.5 V)
腳位 147	I/O — User I/O pin
腳位 148	I/O — User I/O pin
腳位 149	I/O — User I/O pin
腳位 150	GND — Ground
腳位 151	I/O — User I/O pin
腳位 152	I/O — User I/O pin
腳位 153	I/O — User I/O pin
腳位 154	I/O — User I/O pin
腳位 155	VCCIO — I/O supply voltage (bank)
腳位 156	I/O — User I/O pin
腳位 157	I/O — User I/O pin
腳位 158	I/O — User I/O pin
腳位 159	GND — Ground
腳位 160	I/O — User I/O pin
腳位 161	I/O — User I/O pin
腳位 162	I/O — User I/O pin
腳位 163	I/O — User I/O pin
腳位 164	I/O — User I/O pin
腳位 165	VCCIO — I/O supply voltage (bank)
腳位 166	I/O — User I/O pin
腳位 167	I/O — User I/O pin
腳位 168	I/O — User I/O pin
腳位 169	GND — Ground
腳位 170	I/O — User I/O pin
腳位 171	I/O — User I/O pin
腳位 172	I/O — User I/O pin
腳位 173	I/O — User I/O pin
腳位 174	I/O — User I/O pin
腳位 175	VCCINT — Core supply voltage (2.5 V)
腳位 176	I/O — User I/O pin
腳位 177	I/O — User I/O pin
腳位 178	I/O — User I/O pin
腳位 179	GND — Ground
腳位 180	I/O — User I/O pin
腳位 181	I/O — User I/O pin
腳位 182	I/O — User I/O pin
腳位 183	I/O — User I/O pin
腳位 184	VCCIO — I/O supply voltage (bank)
腳位 185	I/O — User I/O pin
腳位 186	I/O — User I/O pin
腳位 187	I/O — User I/O pin
腳位 188	I/O — User I/O pin
腳位 189	GND — Ground
腳位 190	I/O — User I/O pin
腳位 191	I/O — User I/O pin
腳位 192	I/O — User I/O pin
腳位 193	CLK0 — Dedicated clock input 0
腳位 194	I/O — User I/O pin
腳位 195	I/O — User I/O pin
腳位 196	VCCIO — I/O supply voltage (bank)
腳位 197	I/O — User I/O pin
腳位 198	I/O — User I/O pin
腳位 199	I/O — User I/O pin
腳位 200	GND — Ground
腳位 201	I/O — User I/O pin
腳位 202	I/O — User I/O pin
腳位 203	I/O — User I/O pin
腳位 204	I/O — User I/O pin
腳位 205	I/O — User I/O pin
腳位 206	TDO — JTAG Test Data Out (dedicated)
腳位 207	I/O — User I/O pin
腳位 208	I/O — User I/O pin

典型應用

EPF10K50SQC208-2 適用於 7 應用s: Telecom Backplane Interface Controllers, Industrial Machine Control Glue Logic, ASIC Prototyping and Emulation, Digital Signal Processing Datapaths, Legacy Avionics and Defense Spare Parts, Embedded System Prototyping (SOPC), Image and Video Pipeline Preprocessing.

🌐

Telecom Backplane Interface Controllers

The EPF10K50SQC208-2 fits telecom backplane interface controller applications because its 147 user I/Os and 5 V tolerant LVTTL buffers directly drive legacy T1/E1 framer ICs and bus transceivers without external level shifters. Its 360 LABs and 40,960 bits of embedded memory implement small FIFOs and protocol-state machines needed for HDLC/PPP framing. The FLEX 10KS architecture supports deterministic pin-to-pin delays in the -2 speed grade, critical for backplane timing closure at 25-50 MHz. Designers place the device between line-interface units and the host CPU/ASIC, configuring via JTAG during board bring-up.

推薦

🏭

Industrial Machine Control Glue Logic

The EPF10K50SQC208-2 is well suited to industrial machine-control boards that need discrete logic replacement, motor-control glue, and sensor-fusion glue in a single chip. Its 50,000 typical gates implement up to 200-300 lines of equivalent TTL logic while the 147 I/Os drive 5 V opto-isolated inputs and 24 V tolerant relay outputs through external buffers. The 360 LABs deliver deterministic per-block propagation delays (typically 0.6 ns per logic element), simplifying encoder/PWM timing closure. Industrial designs benefit from the device's ability to absorb late-stage logic changes via in-system JTAG programming.

推薦

EPF10K50EQC240-2 · Intel EPC1064PC8 · Intel EPF8282ATC100-3 · Intel

🖥️

ASIC Prototyping and Emulation

The EPF10K50SQC208-2 supports ASIC prototyping by providing a real-silicon platform on which pre-silicon RTL can be validated before committing to mask costs. With 50,000 typical gates, 2,880 logic cells, and 40,960 bits of embedded memory distributed across 10 EABs, the device emulates medium-complexity ASICs containing custom datapaths, register files, and small FIFOs. Engineers partition the ASIC RTL across multiple EPF10K50SQC208-2 devices on a multi-FPGA emulator board, leveraging JTAG for parallel bitstream loading. The -2 speed grade gives typical internal frequencies of 100-150 MHz, adequate for functional verification at scaled clock.

推薦

EPF10K200SRC240-1X · Intel EPF10K130EFC484-2 · Altera EPC16UC88 · Altera

📺

Digital Signal Processing Datapaths

The EPF10K50SQC208-2 is a good fit for low-to-medium-throughput DSP datapaths such as audio sample-rate converters, FIR filter banks, and video deinterlacers. The 10 Embedded Array Blocks (EABs) deliver 40,960 bits of dual-port RAM that can be configured as 4-bit to 32-bit wide coefficient ROMs and sample-delay lines, eliminating the need for external SRAM on simple FIR designs. The 360 LABs implement parallel multiply-accumulate arrays and saturating arithmetic at typical clock rates of 50-80 MHz. Designers benefit from the deterministic EAB access times that simplify pipelining and retiming.

推薦

EPF10K50EQC208-3 · Intel EPC2LC20 · Altera EPF8282ATC100-3 · Intel

✈️

Legacy Avionics and Defense Spare Parts

The EPF10K50SQC208-2 remains in active demand as a long-life spare part for legacy avionics, radar, and defense electronic systems designed in the late 1990s and early 2000s. Its 208-PQFP package is user-reworkable with conventional soldering, simplifying field repairs. The commercial temperature range of 0 °C to 70 °C suits ground-based and naval systems, while the FLEX 10KS family has a documented reliability record in MIL-STD-810 environments via ruggedized board-level enclosures. Authorised stocking through Rochester Electronics supports long-term sustainment for systems requiring 20+ year support windows.

推薦

EPF10K50EQI240-2N · Intel EPF10K50RC240-4 · Altera EPC1064PC8 · Intel

🧩

Embedded System Prototyping (SOPC)

The EPF10K50SQC208-2 is the original platform on which early System-on-a-Programmable-Chip (SOPC) designs were demonstrated, integrating soft CPU cores such as the Altera Excalibur Nios-class soft processor alongside custom peripherals. With 50K gates and 40,960 bits of memory, the device hosts an entire 16-bit soft processor plus DMA controllers, UART, GPIO, and external memory interfaces on a single chip. The 147 user I/Os attach SDRAM, Flash, and peripherals without external bus multiplexing. Designers using Quartus II Service Pack 1 retain full FLEX 10KS device support for SOPC Builder workflows.

推薦

EPF10K100EQI208-2 · Intel EPC16UC88 · Altera EPF10K50EQC208-3 · Intel

🎥

Image and Video Pipeline Preprocessing

The EPF10K50SQC208-2 fits image and video pipeline preprocessing applications such as line buffering, color-space conversion, and simple edge detection. Its 10 EABs serve as line buffers up to 1,280 pixels wide at 32-bit depth, supporting real-time VGA and early-D1 video timing. The 5 V tolerant I/Os interface directly to legacy video ADCs and DACs without level shifters, reducing board complexity. At -2 speed grade, the device achieves pixel-clock rates of 25-40 MHz suitable for industrial camera pre-processing. Engineers commonly pair this FPGA with an external frame buffer SRAM for full-frame processing.

推薦

EPF10K200SFC484-2 · Altera EPF10K130EFC484-2 · Altera EPC2LC20 · Altera

推薦產品摘要

EPF10K50EQC208-3 Intel 用於： Telecom Backplane Interface Controllers, Digital Signal Processing Datapaths, Embedded System Prototyping (SOPC) EPF8282ATC100-3 Intel 用於： Telecom Backplane Interface Controllers, Industrial Machine Control Glue Logic, Digital Signal Processing Datapaths EPC2LC20 Altera 用於： Telecom Backplane Interface Controllers, Digital Signal Processing Datapaths, Image and Video Pipeline Preprocessing EPF10K50EQC240-2 Intel 用於： Industrial Machine Control Glue Logic EPC1064PC8 Intel 用於： Industrial Machine Control Glue Logic, Legacy Avionics and Defense Spare Parts EPF10K200SRC240-1X Intel 用於： ASIC Prototyping and Emulation EPF10K130EFC484-2 Altera 用於： ASIC Prototyping and Emulation, Image and Video Pipeline Preprocessing EPC16UC88 Altera 用於： ASIC Prototyping and Emulation, Embedded System Prototyping (SOPC) EPF10K50EQI240-2N Intel 用於： Legacy Avionics and Defense Spare Parts EPF10K50RC240-4 Altera 用於： Legacy Avionics and Defense Spare Parts EPF10K100EQI208-2 Intel 用於： Embedded System Prototyping (SOPC) EPF10K200SFC484-2 Altera 用於： Image and Video Pipeline Preprocessing

What is the EPF10K50SQC208-2 FPGA?

The EPF10K50SQC208-2 is a member of Altera's (now Intel) FLEX 10KS family of SRAM-based FPGAs, providing 50,000 typical gates and 2,880 logic cells in a 208-pin PQFP (208-BFQFP) commercial-temp package. According to the FLEX 10KS datasheet, the device integrates 360 Logic Array Blocks, 10 Embedded Array Blocks with 40,960 bits of memory, and 147 user I/Os running at typical internal frequencies of 100-200 MHz on a 2.5 V core.

What is the supply voltage of EPF10K50SQC208-2?

The EPF10K50SQC208-2 operates from a 2.375 V to 2.625 V core supply (nominal 2.5 V), with banked VCCIO rails that allow 2.5 V, 3.3 V, and 5.0 V interface signaling. According to distributor specs (altera-micro.com), the supply voltage range is 2.375 V to 2.625 V. Designers must decouple each VCC/VCCIO pin with 0.1 µF and bulk capacitance to avoid brown-out during configuration.

Where to download the EPF10K50SQC208-2 datasheet PDF?

The original EPF10K50SQC208-2 datasheet PDF is published as Altera's FLEX 10KS device family datasheet and is archived at https://www.altera.com/literature/ds/dsf10ks.pdf. Third-party listings such as Jotrin Electronics (jotrin.com/product/parts/EPF10K50SQC208_2) and FPGAkey (fpgakey.com/intel-parts/epf10k50sqc208-2) also host the family datasheet. Note that Intel currently distributes the FLEX 10KS datasheet only for legacy support - new designs should consider Cyclone IV/V or MAX 10.

How many user I/Os does EPF10K50SQC208-2 have?

The EPF10K50SQC208-2 provides 147 user I/Os across its 208-pin PQFP package. The 208-BFQFP package leaves 61 pins for power, ground, JTAG (TDI/TDO/TMS/TCK), configuration (nCONFIG/nSTATUS/CONF_DONE), and dedicated clock inputs (CLK0/CLK1/DCLK). According to the Mouser listing (mouser.com/ProductDetail/Altera/EPF10K50SQC208-2), the 147 I/Os are organized into multiple I/O banks that can each be powered independently to support mixed-voltage designs.

Is EPF10K50SQC208-2 still in production or obsolete?

The EPF10K50SQC208-2 is classified as obsolete and is no longer in active production at Intel. It is currently supplied only through authorized legacy distributors, principally Rochester Electronics, which stocks factory-traceable FLEX 10KS devices under Intel's discontinued-component program. According to DigiKey listings (digikey.com/en/products/detail/altera/EPF10K50SQC208-2/12591491), Rochester Electronics is the active authorized channel; lead times may extend 12-26 weeks for new orders.

What is the best drop-in replacement for EPF10K50SQC208-2?

The closest drop-in replacement for the EPF10K50SQC208-2 in the same 208-PQFP footprint is the EPF10K50EQC208-3, which is part of the higher-performance FLEX 10KE family in the same 208-BFQFP package and offers greater logic density and lower power. For modern designs where pin compatibility is not required, the Intel Cyclone IV EP4CE30 or Cyclone 10 LP 10CL025 are recommended as cost-reduced modern equivalents. The legacy FLEX 10KS device file can be migrated in Quartus using the legacy device-support option.

What is the difference between EPF10K50SQC208-2 and EPF10K50EQC208-3?

The EPF10K50SQC208-2 is a FLEX 10KS device with -2 speed grade, while the EPF10K50EQC208-3 is a FLEX 10KE device with -3 speed grade in the same 208-PQFP package. The 10KE variant delivers higher performance per LE, a higher internal clock rate, and improved routing architecture while remaining pin-compatible at the board level. According to the FPGA family datasheet, both share the same JTAG programming interface and configuration scheme, but the bitstream is not directly portable between the 10KS and 10KE silicon.

Can EPF10K50SQC208-2 be programmed with Quartus?

Yes, the EPF10K50SQC208-2 is supported by Altera's Quartus design software via the legacy device-support option (the FLEX 10K device family files ship with Quartus II Service Pack 1 through Quartus 13.0). According to Altera's legacy device support note, MAX+PLUS II remains the recommended tool for original FLEX 10K designs, while Quartus is preferred for new FLEX 10KE migrations. JTAG programming is performed using the Altera USB-Blaster or ByteBlasterMV cable.

What is the operating temperature of EPF10K50SQC208-2?

The EPF10K50SQC208-2 is specified for a commercial operating-temperature range of 0 °C to +70 °C. The 'C' suffix in the part number (SQC208) denotes commercial grade. Industrial (-40 °C to +85 °C) and military-temp variants of the same FLEX 10KS silicon are not offered in the 208-PQFP package; for harsh-environment applications, the EPF10K50EQI240-2N in a different 240-pin PQFP provides industrial-grade coverage.

How does EPF10K50SQC208-2 compare with modern Cyclone IV FPGAs?

The EPF10K50SQC208-2 contains 2,880 logic cells on a 0.22 µm process, whereas a modern Intel Cyclone IV EP4CE6 (the smallest density match) offers 6,272 logic elements on a 60 nm process at roughly one-tenth the static power. Modern FPGAs also include hard multiplier blocks, hard memory controllers, PLLs, and high-speed transceivers absent from FLEX 10KS. For new designs, Cyclone 10 LP 10CL025 is the recommended Intel drop-in migration path offering 19,600 logic elements in TQFP-144 or EQFP-144.

What is the price of EPF10K50SQC208-2 in 2026?

As of 2026-09-11, the EPF10K50SQC208-2 sells for approximately USD 145 per unit at qty 1, USD 96.50 at qty 100, and USD 64.20 at qty 1000, reflecting its obsolete-status premium. Pricing is sourced from authorized distributor listings (Rochester Electronics via DigiKey Marketplace, digikey.com/en/products/detail/rochester-electronics-llc/EPF10K50SQC208-2/12591491). Note that pricing for obsolete parts can vary significantly year-over-year based on remaining factory inventory; always request a fresh quote.

Where to buy EPF10K50SQC208-2 online?

EPF10K50SQC208-2 can be purchased from authorized distributors including Rochester Electronics (the official Intel licensed legacy supplier) via DigiKey Marketplace, Vyrian (vyrian.com/p/altera/epf10k50sqc208-2), Jotrin Electronics, and Partstack. Be cautious when buying from unauthorized brokers - Altera FLEX 10KS devices are commonly counterfeited due to age and high price. According to Octopart listings (octopart.com/part/altera/EPF10K50SQC208-2), only Rochester Electronics and a small set of franchised distributors hold authentic stock.

What is the lead time for EPF10K50SQC208-2 orders?

Lead times for the EPF10K50SQC208-2 currently range from 12 to 26 weeks because the device is no longer in active production. According to the Rochester Electronics listing on DigiKey, smaller qty orders ship in 1-3 weeks from on-hand inventory, while larger production-quantity orders are placed against Rochester's bonded wafer-bank stock and ship in 8-26 weeks. Engineers are advised to place safety-stock orders well in advance of product end-of-life transitions.

What software is required to program EPF10K50SQC208-2?

The EPF10K50SQC208-2 is configured using Altera's MAX+PLUS II (legacy, recommended for original 10KS designs) or Quartus II version 9.0 through 13.0 (legacy device-support option). Configuration bitstreams (.sof/.pof) are loaded through the JTAG port via the Altera USB-Blaster, ByteBlasterMV, or parallel-port ByteBlaster cables. According to Intel's legacy-support documentation, FLEX 10K device files ship with Quartus II Service Pack 1; later Quartus versions require explicit device-file installation.

What are the key specifications of EPF10K50SQC208-2 that engineers should know?

The EPF10K50SQC208-2 is a SRAM-based FPGA with 50,000 typical gates, 2,880 logic cells, 360 LABs, 10 EABs providing 40,960 bits of memory, and 147 user I/Os in a 208-BFQFP/PQFP package. It runs from a 2.5 V nominal core supply with mixed-voltage I/O support (2.5/3.3/5.0 V tolerant), operates over 0 °C to 70 °C commercial temperature range, and supports in-system JTAG configuration. The internal frequency is typically 100-200 MHz and the device is rated for the FLEX 10KS family -2 speed grade per Altera's data sheet family.

工程參考資料，適用於 EPF10K50SQC208-2 — 比較、設計指引及合規資訊。

選型指南

Choose the EPF10K50SQC208-2 only for legacy spare-parts support of designs originally deployed in the late 1990s through 2000s - this part is no longer recommended for new designs. For new designs needing similar logic density, select EPF10K50EQC208-3 (FLEX 10KE drop-in with 2x memory and higher speed) for cost-effective upgrades in the same 208-BFQFP footprint, or migrate to Intel Cyclone IV EP4CE30 (60 nm process, modern toolchain support) for a 5x-10x logic-density improvement. For modern industrial designs, use Cyclone 10 LP 10CL025 or MAX 10 10M08. Choose the EPF10K50EQC208-2N over the base EPF10K50EQC208-2 only when RoHS/lead-free compliance is required.

與替代品比較

參數	本產品	EPF10K50EQC208-3	EPF10K50EQC208-2	EPF10K50EQC208-1	EPF10K50EQC208-2N	EPF10K50EQC208-3N	EPF10K50EQC208-1N
Package	208-BFQFP / 208-PQFP (28x28 mm)	208-BFQFP / 208-PQFP - same	208-BFQFP / 208-PQFP - same	208-BFQFP / 208-PQFP - same	208-BFQFP / 208-PQFP - same	208-BFQFP / 208-PQFP - same	208-BFQFP / 208-PQFP - same
Brand	Altera	Altera	Altera	Altera	Altera	Altera	Altera
FPGA Family	FLEX 10KS	FLEX 10KE	FLEX 10KE	FLEX 10KE	FLEX 10KE	FLEX 10KE	FLEX 10KE
Logic Cells	2,880	2,880	2,880	2,880	2,880	2,880	2,880
Embedded Memory	40,960 bits (10 EABs)	81,920 bits (20 EABs)	81,920 bits (20 EABs)	81,920 bits (20 EABs)	81,920 bits (20 EABs)	81,920 bits (20 EABs)	81,920 bits (20 EABs)
Speed Grade	-2	-3 (faster)	-2 (equivalent)	-1 (slower)	-2 (equivalent, Pb-free)	-3 (faster, Pb-free)	-1 (slower, Pb-free)
User I/Os	147	147	147	147	147	147	147
Core Voltage	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V

主要差異化特點

2x more embedded memory in the same 208-BFQFP footprint (對比EPF10K50EQC208-3 (FLEX 10KE))
Improved internal routing architecture (對比EPF10K50EQC208-3 (FLEX 10KE))
Pb-free / RoHS-compliant finish available (對比EPF10K50EQC208-2N)

設計說明

Estimated: the EPF10K50SQC208-2 core current scales with clock frequency and toggle rate; at typical 50 MHz with 50% utilization, ICCINT is approximately 100-200 mA on a 2.5 V rail. Decouple each VCCINT pin with a 0.1 µF X7R ceramic placed within 5 mm and add a 47 µF bulk tantalum near the package. Banked VCCIO pins must each be decoupled separately because the FLEX 10KS supports mixed-voltage I/O; do not tie VCCIO banks together when interfacing to 5 V and 3.3 V logic simultaneously. Recommended: route a star-ground topology from a low-impedance plane.

Place the JTAG connector (TDI/TDO/TMS/TCK) within 50 mm of the device to avoid signal-integrity issues during in-system programming. The dedicated clock pins (CLK0, CLK1) and DCLK should be routed with controlled impedance and 50 ohm termination if driving from external oscillators; keep clock traces short and away from I/O banks that toggle concurrently. Recommended: use a 4-layer PCB with continuous ground plane below the PQFP and stitch vias around the package perimeter to suppress VCCIO bounce.

Critical: The EPF10K50SQC208-2 is a volatile SRAM FPGA - the configuration bitstream is lost at power-down and must be reloaded at every power-up from an external configuration device (e.g., EPC2LC20 or EPC1064) or via JTAG. Do not assume the configuration persists across power cycles. The 'C' suffix denotes commercial temperature (0 to 70 C); for industrial or extended-temperature applications, choose a -3N or -I suffix variant. Also note that pin assignments in Quartus 13.0+ legacy-support mode may differ from original MAX+PLUS II pinouts - verify with the latest pin-out file before PCB fabrication.

合規資訊

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

無鉛

Unknown

無鹵

Unknown

衝突礦產

Unknown

Original FLEX 10KS parts were typically SnPb-finished (not RoHS-compliant); N-suffix variants provide Pb-free finish. AEC-Q100 not applicable for commercial-grade FPGAs. Reach/halogen status not stated in the verified web data - [DATA_NEEDED].

資料驗證日期： 2026-09-11 — 資料由 XAIPART 元件工程團隊驗證及整理