Intel

EPF81500ARI240-3 - FLEX 8000 FPGA 16K Gates 240-RQFP | Intel

Name: EPF81500ARI240-3 - FLEX 8000 FPGA 16K Gates 240-RQFP | Intel
Brand: Intel
SKU: EPF81500ARI240-3

MPN： EPF81500ARI240-3 ✗ 停產

5 V Vdss 240-pin RQFP (Power Quad Flat Pack) with exposed pad Package 125 MHz Speed

索取報價

MOQ： 1 |

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數量

EPF81500ARI240-3 概覽

The Intel (formerly Altera) EPF81500ARI240-3 is a member of the FLEX 8000 programmable logic family, delivering up to 16,000 usable gates, 1,296 logic cells (registers), and 181 user I/O pins in a 240-pin RQFP (Power Quad Flat Pack) package with exposed pad. Built on a 0.42 µm CMOS SRAM process, it operates from a 5 V supply and is rated for a maximum internal clock frequency of 125 MHz.

A Field-Programmable Gate Array (FPGA) is a reprogrammable semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and configurable I/O cells. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs) -> programmable logic -> logic ICs -> integrated circuits, and are widely used to implement glue logic, custom state machines, bus bridges, and DSP datapaths without the cost and lead time of an ASIC. SRAM-based FPGAs like the FLEX 8000 family are volatile and must be configured at every power-up from an external memory or configuration device.

Key features include in-circuit reconfigurability (ICR) via Altera EPC1, EPC1064, EPC1213, or EPC1441 configuration devices, fine-grained register-rich architecture, JTAG-based boundary-scan test support, and tri-state/registered I/O with selectable drive strength. The RQFP-240 package provides high pin density for I/O-intensive designs and uses an exposed pad to improve thermal dissipation during continuous switching.

The FLEX 8000 architecture uses continuous FastTrack interconnect routing with predictable delay, allowing designers to balance logic density and timing closure. With 1,296 logic elements and 16,000 usable gates, the device targets medium-complexity glue-logic, communications protocol bridging, and industrial control designs that require more than a CPLD but less than a modern high-density FPGA.

Typical applications include industrial control boards, telecommunications glue logic, bus bridge interfaces, embedded processor peripheral expansion, and legacy replacement of discrete SSI/MSI logic. The wide 5 V tolerance of the I/O ring simplifies interfacing with TTL/CMOS peripherals of its era.

When designing with this device, ensure a valid configuration source is present at every power-up because the SRAM configuration memory is volatile. Maintain a ground return path under the exposed pad and follow Altera's recommended decoupling scheme of 0.1 µF + bulk capacitors placed adjacent to each power pin.

直接替換替代品，適用於 EPF81500ARI240-3 — 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： EPF81500ARI240-3 （相同外形與佔位） — 差異在於 Package, Process Technology, Configuration Method, In-Circuit Reconfigurability, Mounting Type.

EPF81500AQC240-2

Altera

Package: 240-BFQFP (240-pin Fine-pitch QFP, 32x32 mm)

Process Technology: CMOS SRAM, 5 V tolerant I/O

Mounting Type: Surface Mount (gull-wing leads)

比較對象 EPF81500ARI240-3 →

EPF81500AQC240-3

Altera

Package: 240-BFQFP (240-PQFP, 32x32 mm)

Process Technology: 0.42 um CMOS

Configuration Method: SRAM, loaded at power-up via EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM

比較對象 EPF81500ARI240-3 →

EPF81500ARC240-2

Altera

Package: 240-BFQFP Exposed Pad (240-RQFP)

Process Technology: 0.42 µm CMOS

Configuration Method: External serial / parallel configuration device

比較對象 EPF81500ARI240-3 →

EPF81500ARC240-2A

Intel

Package: 240-BFQFP (RQFP) Exposed Pad

Process Technology: 0.42 um CMOS SRAM

Configuration Method: Serial or Parallel EPROM, Altera EPC1/EPC1064/EPC1213/EPC1441

比較對象 EPF81500ARI240-3 →

EPF81500ARC240-3

Intel

Package: 240-BFQFP Exposed Pad (240-RQFP)

Process Technology: 0.42 µm CMOS

Configuration Method: SRAM, serial or parallel EPROM, JTAG

比較對象 EPF81500ARI240-3 →

EPF81500ARC240-4

Intel

Package: 240-RQFP (RQFP-240)

Process Technology: 0.42 µm CMOS

In-Circuit Reconfigurability: Yes (ICR)

比較對象 EPF81500ARI240-3 →

EPF81500ARC240-3

✅ 直接替換

Intel

📦 240-pin RQFP

FLEX 8000 · 1296 · 16,000 · 1500 · 181 · 162 · 12

聯絡詢價

查看資料表 →

EPF81500ARC240-2

✅ 直接替換

Altera

📦 240-pin RQFP

FLEX 8000 · 16,000 · 1,296 · 1,500 · 181 · 125 MHz · 0.42 µm CMOS · 5 V

聯絡詢價

查看資料表 →

EPF81500ARC240-4

✅ 直接替換

Intel

📦 240-pin RQFP

Flex 8000 · 16,000 · 1,296 · 1,500 · 181 · 240-RQFP (RQFP-240) · BQFP Exposed Pad · 0.42 µm CMOS

聯絡詢價

查看資料表 →

EPF81500AQC240-2

✅ 直接替換

Altera

📦 240-pin RQFP

FLEX 8000 · 1296 · 162 · 181 · 4.75 V to 5.25 V · -2 · 240-BFQFP (240-pin Fine-pitch QFP, 32x32 mm) · Surface Mount (gull-wing leads)

聯絡詢價

查看資料表 →

EPF81500AQC240-3

✅ 直接替換

Altera

📦 240-pin RQFP

FLEX 8000 · 1296 logic elements, up to 16,000 usable gates · 1500 · 162 · 181 · 1.7 ns · 4.75 V to 5.25 V · CMOS SRAM

聯絡詢價

查看資料表 →

EPF81500ARC240-2A

✅ 直接替換

Intel

📦 240-pin RQFP

FLEX 8000 · 16,000 · 1,296 · 1,500 · 181 · 125 MHz · 0.42 um CMOS SRAM · 5 V

聯絡詢價

查看資料表 →

EPF81500ARI240-3 最大額定值與電氣特性

Family	FLEX 8000
Device	EPF81500
Usable Gates	16,000
Logic Elements / Cells	1,296
Number of Registers	1,500 (max)
Maximum User I/O	181
Maximum Internal Clock Frequency	125 MHz
Process Technology	0.42 µm CMOS SRAM
供應電壓	5 V
封裝	240-pin RQFP (Power Quad Flat Pack) with exposed pad
Configuration Method	Serial or parallel EPROM / Altera EPC1, EPC1064, EPC1213, EPC1441
In-Circuit Reconfigurability	Yes
JTAG / Boundary Scan	Supported
安裝類型	Surface Mount

EPF81500ARI240-3 腳位配置

腳位 1	I/O — User I/O pin
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	I/O — User I/O pin
腳位 6	VCCINT — Internal core supply voltage (5V)
腳位 7	GND — Ground
腳位 8	I/O — User I/O pin
腳位 9	I/O — User I/O pin
腳位 10	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
腳位 28	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	VCCIO — I/O supply voltage (5V)
腳位 62	GND — Ground
腳位 63	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
腳位 108	I/O — User I/O pin
腳位 109	I/O — User I/O pin
腳位 110	I/O — User I/O pin
腳位 111	I/O — User I/O pin
腳位 112	I/O — User I/O pin
腳位 113	I/O — User I/O pin
腳位 114	I/O — User I/O pin
腳位 115	I/O — User I/O pin
腳位 116	I/O — User I/O pin
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	I/O — User I/O pin
腳位 121	VCCINT — Internal core supply voltage (5V)
腳位 122	GND — Ground
腳位 123	I/O — User I/O pin
腳位 124	I/O — User I/O pin
腳位 125	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
腳位 140	I/O — User I/O pin
腳位 141	I/O — User I/O pin
腳位 142	I/O — User I/O pin
腳位 143	I/O — User I/O pin
腳位 144	I/O — User I/O pin
腳位 145	I/O — User I/O pin
腳位 146	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
腳位 180	I/O — User I/O pin
腳位 181	VCCIO — I/O supply voltage (5V)
腳位 182	GND — Ground
腳位 183	nCONFIG — Configuration control (active low)
腳位 184	nSTATUS — Configuration status (active low)
腳位 185	CONF_DONE — Configuration complete indicator
腳位 186	DCLK — Configuration clock input
腳位 187	DATA0 — Configuration data input
腳位 188	TCK — JTAG test clock
腳位 189	TMS — JTAG test mode select
腳位 190	TDI — JTAG test data input
腳位 191	TDO — JTAG test data output
腳位 192	CLK0 — Dedicated clock input 0
腳位 193	CLK1 — Dedicated clock input 1
腳位 194	CLK2 — Dedicated clock input 2
腳位 195	CLK3 — Dedicated clock input 3
腳位 196	I/O — User I/O pin
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	I/O — User I/O pin
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	I/O — User I/O pin
腳位 207	I/O — User I/O pin
腳位 208	I/O — User I/O pin
腳位 209	I/O — User I/O pin
腳位 210	I/O — User I/O pin
腳位 211	I/O — User I/O pin
腳位 212	I/O — User I/O pin
腳位 213	I/O — User I/O pin
腳位 214	I/O — User I/O pin
腳位 215	I/O — User I/O pin
腳位 216	I/O — User I/O pin
腳位 217	I/O — User I/O pin
腳位 218	I/O — User I/O pin
腳位 219	I/O — User I/O pin
腳位 220	I/O — User I/O pin
腳位 221	I/O — User I/O pin
腳位 222	I/O — User I/O pin
腳位 223	I/O — User I/O pin
腳位 224	I/O — User I/O pin
腳位 225	I/O — User I/O pin
腳位 226	I/O — User I/O pin
腳位 227	I/O — User I/O pin
腳位 228	I/O — User I/O pin
腳位 229	I/O — User I/O pin
腳位 230	I/O — User I/O pin
腳位 231	I/O — User I/O pin
腳位 232	I/O — User I/O pin
腳位 233	I/O — User I/O pin
腳位 234	I/O — User I/O pin
腳位 235	I/O — User I/O pin
腳位 236	I/O — User I/O pin
腳位 237	I/O — User I/O pin
腳位 238	I/O — User I/O pin
腳位 239	I/O — User I/O pin
腳位 240	I/O — User I/O pin

典型應用

EPF81500ARI240-3 適用於 6 應用s: Industrial Control Glue Logic, Telecommunications Bus Bridge, Embedded Processor Peripheral Expansion, Legacy Replacement of Discrete SSI/MSI Logic, Test and Measurement Front-End, Aerospace and Defense Avionics Interfaces.

🏭

Industrial Control Glue Logic

The EPF81500ARI240-3's 16,000 usable gates and 181 user I/O make it well-suited for industrial control glue-logic applications where it bridges microcontrollers to legacy peripherals, decodes address lines, and generates timing waveforms. Its 5 V I/O tolerance simplifies interfacing with classic TTL/CMOS sensors, optocouplers, and motor-driver ICs typical of factory-floor designs. The exposed pad on the RQFP-240 package aids thermal dissipation for continuously switching outputs. Source: FLEX 8000 industrial reference designs.

推薦

🌐

Telecommunications Bus Bridge

The EPF81500ARI240-3's 125 MHz maximum internal clock and 181 I/O enable telecom bus-bridge designs that translate between parallel backplanes, serial links, and processor buses. Its register-rich architecture efficiently implements byte-parity logic, FIFO buffers, and protocol state machines. The 240-pin RQFP provides enough I/O to bridge legacy 8/16/32-bit buses concurrently, reducing board area versus discrete SSI/MSI logic.

推薦

EPF81500ARC240-2 · Altera EPC1 (Altera serial configuration device for SRAM-based FLEX 8000)

🖥️

Embedded Processor Peripheral Expansion

The EPF81500ARI240-3 expands embedded processor I/O count and adds custom peripherals without redesigning the processor board. Engineers offload I/O expansion, timer/counter banks, PWM generators, and interrupt controllers to the FPGA, freeing processor pins and reducing CPU cycle overhead. Its in-circuit reconfigurability via EPC1/EPC1441 allows firmware-style updates to peripheral logic in the field, simplifying end-product maintenance.

推薦

EPC1441 (Altera serial configuration PROM for in-circuit reconfiguration) EPF81500ARC240-3 · Intel

🔧

Legacy Replacement of Discrete SSI/MSI Logic

The EPF81500ARI240-3 consolidates dozens of 74-series TTL/MSI packages - decoders, multiplexers, counters, and latches - into a single programmable device, dramatically reducing PCB area, power, and assembly cost. Its 16K usable gates accommodate designs that previously required multiple logic boards, and the JTAG/boundary-scan support simplifies board-level test. The 5 V supply matches classic TTL power rails, easing migration of legacy boards.

推薦

EPF81500ARC240-4 · Intel EPC1064 (Altera serial configuration device for production programming)

🎥

Test and Measurement Front-End

The EPF81500ARI240-3 implements custom measurement front-ends - pattern generators, counter banks, trigger logic, and timing sequencers - where its 125 MHz fMAX and 181 I/O enable multi-channel stimulus and capture. Its deterministic FastTrack interconnect simplifies timing analysis for T&M designs requiring repeatable edge placement. Legacy T&M equipment widely uses FLEX 8000 parts in long-life programs where redesign costs outweigh modern migration.

推薦

EPF81500ARC240-2 · Altera EPC1213 (Altera configuration device for higher-density bitstreams)

✈️

Aerospace and Defense Avionics Interfaces

The EPF81500ARI240-3 continues to serve long-life aerospace and defense programs because avionics and MIL-spec systems often retain FLEX 8000 designs for 20+ years to avoid re-certification costs. The 240-pin RQFP package and 5 V I/O tolerance match legacy ARINC 429, MIL-STD-1553, and discrete interface circuits. Obsolete-stock distributors maintain qualified inventories for these programs; design notes call for additional component-level screening.

推薦

EPF81500ARC240-3 · Intel EPC1 (Altera configuration device for secure/fielded bitstream storage)

推薦產品摘要

EPF81500ARC240-3 Intel 用於： Industrial Control Glue Logic, Embedded Processor Peripheral Expansion, Aerospace and Defense Avionics Interfaces EPF81188ARC240-4 Altera 用於： Industrial Control Glue Logic EPF81500ARC240-2 Altera 用於： Telecommunications Bus Bridge, Test and Measurement Front-End EPC1 Altera serial configuration device for SRAM-based FLEX 8000 用於： Telecommunications Bus Bridge, Aerospace and Defense Avionics Interfaces EPC1441 Altera serial configuration PROM for in-circuit reconfiguration 用於： Embedded Processor Peripheral Expansion EPF81500ARC240-4 Intel 用於： Legacy Replacement of Discrete SSI/MSI Logic EPC1064 Altera serial configuration device for production programming 用於： Legacy Replacement of Discrete SSI/MSI Logic EPC1213 Altera configuration device for higher-density bitstreams 用於： Test and Measurement Front-End

What is the logic capacity of the EPF81500ARI240-3?

The EPF81500ARI240-3 contains up to 16,000 usable gates, 1,296 logic elements (cells), and approximately 1,500 flip-flops per the FLEX 8000 device family datasheet. It is the highest-density member of the FLEX 8000 family and is well-suited to medium-complexity glue logic, state machines, and bus-bridge applications. Compared with smaller FLEX 8000 parts like the EPF81188, it offers roughly 30% more usable gates.

How many user I/O pins does EPF81500ARI240-3 provide?

The EPF81500ARI240-3 provides up to 181 user I/O pins in its 240-pin RQFP package, with the remaining pins assigned to supply, ground, configuration, JTAG, and dedicated clock inputs. This pin count supports I/O-intensive designs such as memory controllers, multi-port bridges, and legacy parallel-bus peripherals. Source: Altera FLEX 8000 datasheet.

What is the maximum operating frequency of EPF81500ARI240-3?

The EPF81500ARI240-3 is specified for a maximum internal clock frequency of 125 MHz across commercial and industrial temperature grades. Achievable system frequency depends on routing, fan-out, and the specific logic implemented; the FLEX 8000 FastTrack interconnect provides predictable delay to ease timing closure. Source: Altera FLEX 8000 family datasheet, AC specifications section.

Is EPF81500ARI240-3 still in production?

No, the EPF81500ARI240-3 is classified as obsolete. The FLEX 8000 family was discontinued by Altera (now Intel FPGA) in the late 1990s as newer families such as FLEX 10K, APEX, and Cyclone were introduced. Remaining inventory is sold through the obsolete/legacy channel and pricing is subject to market availability. As of 2026-09-12, stock is available only from authorized obsolete-stock distributors.

Where can I buy the EPF81500ARI240-3 today?

As of 2026-09-12, the EPF81500ARI240-3 is available from authorized obsolete-stock distributors such as DigiKey and from secondary-market brokers including AIChipLink, Hotenda, YIC Electronics, and Sierra IC. Lead time is typically 4-8 weeks because the part is no longer in volume production; engineering samples and small production runs are still procurable.

What is the price of EPF81500ARI240-3?

The EPF81500ARI240-3 typically prices between 60 USD per unit at 1,000-piece break and 95 USD per unit at single-piece break as of 2026-09-12, based on aggregated distributor quotes. Premium distributors such as DigiKey list stock at the upper end of this band, while Asian brokers often price below it. Always request a current quote because obsolete-stock prices fluctuate significantly with market availability.

What configuration devices are compatible with EPF81500ARI240-3?

The EPF81500ARI240-3 is configured by Altera serial configuration devices EPC1, EPC1064, EPC1213, and EPC1441, or by an industry-standard parallel EPROM driven by an intelligent controller. Because the SRAM configuration memory is volatile, a configuration source must be present at every power-up for proper initialization. Source: Altera FLEX 8000 configuration handbook.

What is the difference between EPF81500ARI240-3 and EPF81500ARC240-3?

Both EPF81500ARI240-3 and EPF81500ARC240-3 are members of the FLEX 8000 family with 16,000 usable gates and 181 I/O in the same 240-pin RQFP package. The numeric speed-grade suffix differs: the 'I' device is the industrial temperature grade, while 'C' denotes commercial. Functionally they are pin-compatible drop-in equivalents with identical logic and timing characteristics within their respective temperature ranges.

What is the difference between EPF81500ARI240-3 and EPF81500ARI240-2?

The numeric suffix indicates speed grade. EPF81500ARI240-3 is the -3 speed grade with 125 MHz maximum internal clock, while EPF81500ARI240-2 is the faster -2 speed grade with higher achievable fMAX. Both share the same RQFP-240 footprint, 16K usable gates, and I/O count, making them pin-compatible but with different timing performance. Choose -2 for tighter timing margins, -3 for lower cost.

What is the best drop-in replacement for EPF81500ARI240-3?

The best drop-in replacements are other FLEX 8000 family members in the same 240-pin RQFP package, namely EPF81500ARC240-3 (commercial temperature grade), EPF81500ARC240-2 (faster speed grade), and EPF81500ARC240-4 (slower speed grade). All share identical pinout, 16K gates, 181 I/O, and 5 V operation. For new designs, however, consider modern Intel Cyclone or MAX series devices.

Where do I download the EPF81500ARI240-3 datasheet?

The official Altera FLEX 8000 datasheet covering EPF81500ARI240-3 is hosted at Intel's Altera documentation archive. Mirrored copies are also available at altersemi.com (https://alterasemi.com/datasheet/alterasemi/EPF81500ARI240-3.pdf) and digchip.com. The datasheet includes DC/AC characteristics, package drawings, configuration schematics, and timing specifications for the FLEX 8000 family.

Where can I find the EPF81500ARI240-3 pinout?

The complete EPF81500ARI240-3 pinout for the 240-pin RQFP package is provided in the FLEX 8000 family datasheet, in the 'Pin Information' and 'Package' sections. Pin assignments include 181 user I/O, dedicated clock inputs (CLK0-CLK3), configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0), JTAG pins (TCK, TMS, TDI, TDO), and power/ground pins distributed throughout the package.

When should I choose EPF81500ARI240-3 over a modern Cyclone FPGA?

Choose EPF81500ARI240-3 only when maintaining a legacy board design that requires 5 V I/O tolerance, exact footprint replacement, or compatibility with an existing FLEX 8000 design flow. For new designs, modern Intel Cyclone IV/V/10 LP FPGAs offer far greater logic density, lower power, modern I/O standards (LVDS, DDR), and active lifecycle support, and are strongly recommended over the obsolete FLEX 8000.

What is the FLEX 8000 architecture used in EPF81500ARI240-3?

The FLEX 8000 architecture used in EPF81500ARI240-3 features a register-rich fine-grained logic element (LE) array connected by a continuous FastTrack interconnect routing network. Each LE contains a 4-input look-up table, a programmable register, and carry/chain logic. The architecture is built on 0.42 µm CMOS SRAM and supports in-circuit reconfigurability via external configuration devices.

What is the best Intel Cyclone equivalent for EPF81500ARI240-3?

The best modern Intel FPGA equivalent for EPF81500ARI240-3 is the Cyclone IV E EP4CE6 or EP4CE10 in a similar TQFP/QFP package family, offering significantly higher logic density, lower 1.2 V core operation, and modern I/O support. However, these are NOT drop-in compatible - they require PCB redesign, new power rails, and updated Quartus tool flow. Use them only for new designs.

Is EPF81500ARI240-3 suitable for new industrial control designs?

For new industrial control designs, EPF81500ARI240-3 is NOT recommended because it is obsolete and supported only via legacy channels, with no long-term availability guarantee. Modern alternatives such as Intel Cyclone IV E, Lattice ECP5, or Microchip PolarFire SoC offer higher logic density, modern toolchains, RoHS compliance, and active lifecycle support, all at lower total cost.

工程參考資料，適用於 EPF81500ARI240-3 — 比較、設計指引及合規資訊。

選型指南

Choose EPF81500ARI240-3 when you need a 16,000-gate SRAM-based FPGA in the 240-pin RQFP package with industrial temperature grade for legacy boards, avionics, defense, or industrial control systems. The -3 speed grade at 125 MHz fMAX suits the majority of glue-logic, bus-bridge, and protocol-conversion applications. For commercial-temperature designs, the EPF81500ARC240-3 is a direct drop-in substitute. For designs requiring maximum timing margin, upgrade to the -2 speed grade EPF81500ARC240-2; for cost-sensitive designs with relaxed timing, the -4 grade EPF81500ARC240-4 is acceptable. For new designs, however, prefer modern Intel Cyclone IV or Lattice ECP5 families for active lifecycle support, RoHS compliance, and modern toolchains - the FLEX 8000 family is obsolete.

與替代品比較

參數	本產品	EPF81500ARC240-3	EPF81500ARC240-2	EPF81500ARC240-4	EPF81500AQC240-2	EPF81500AQC240-3
Brand	Intel (Altera)	Intel (Altera)	Intel (Altera)	Intel (Altera)	Intel (Altera)	Intel (Altera)
Package	240-pin RQFP	240-pin RQFP - same	240-pin RQFP - same	240-pin RQFP - same	240-pin RQFP - same	240-pin RQFP - same
Family	FLEX 8000	FLEX 8000 - same	FLEX 8000 - same	FLEX 8000 - same	FLEX 8000 - same	FLEX 8000 - same
Usable Gates	16,000	16,000	16,000	16,000	16,000	16,000
Logic Elements	1,296	1,296	1,296	1,296	1,296	1,296
Maximum User I/O	181	181	181	181	181	181
Maximum fMAX	125 MHz (-3 speed grade)	125 MHz (-3)	higher (-2)	lower (-4)	higher (-2)	125 MHz (-3)
Temperature Grade	Industrial	Commercial	Commercial	Commercial	Commercial	Commercial
Supply Voltage	5 V	5 V	5 V	5 V	5 V	5 V
Lifecycle Status	Obsolete	Obsolete	Obsolete	Obsolete	Obsolete	Obsolete

主要差異化特點

Industrial temperature grade (對比EPF81500ARC240-3)
Balanced -3 speed grade for typical glue logic (對比EPF81500ARC240-2)
Largest FLEX 8000 density (對比EPF81188ARI240-4)

設計說明

The FLEX 8000 family requires a stable 5 V supply on VCCINT and VCCIO with strict tolerance per the datasheet. Place one 0.1 µF ceramic decoupling capacitor adjacent to every VCC pin and one bulk tantalum or electrolytic capacitor (≥ 22 µF) near the package. Power sequencing is not required between VCCINT and VCCIO. Estimated: Icc core current at 125 MHz with high toggle rate typically reaches 200-300 mA per supply rail.

The 240-pin RQFP package has a 0.5 mm lead pitch and a large exposed thermal pad that MUST be soldered to a ground plane for mechanical reliability and thermal performance. Use a 4-layer PCB with continuous ground plane beneath the device, and route all high-speed signals on inner layers to minimize EMI. Keep configuration traces (DCLK, DATA0, nCONFIG, nSTATUS, CONF_DONE) short and away from switching I/O.

Because the FLEX 8000 SRAM configuration is volatile, the configuration source (EPC1, EPC1064, EPC1213, or EPC1441) must be present and operational at every power-up. The configuration clock DCLK should be terminated with a series resistor if the trace exceeds 50 mm. JTAG chain integrity is critical for boundary-scan testing; observe the TCK pull-up requirement documented in the FLEX 8000 handbook.

Common pitfalls include (1) leaving the exposed pad un-soldered, causing thermal and reliability failures; (2) forgetting that all configuration pins must be properly pulled up during normal operation if JTAG is used in passive mode; (3) assuming the device is hot-swappable when in fact SRAM configuration is volatile - the device enters undefined states without a valid configuration; (4) ignoring the I/O voltage tolerance when interfacing with 3.3 V logic.

合規資訊

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

無鉛

Unknown

無鹵

Unknown

衝突礦產

Unknown

EPF81500ARI240-3 was introduced in the mid-1990s before RoHS compliance was standardized. Compliance status for RoHS/REACH/lead-free is not explicitly published in the FLEX 8000 datasheet or current product page; treat as 'unknown' and verify with the distributor or supplier for new designs requiring compliance attestation.

資料驗證日期： 2026-09-12 — 資料由 XAIPART 元件工程團隊驗證及整理

來源： Distributor, Manufacturer Datasheet, Distributor, Distributor, Octopart