EPF882 0ATC 1 2 3
Intel

EPF8820ATC144-4N - 8K Gates, 125MHz FLEX 8000 FPGA | Intel / Altera

MPN: EPF8820ATC144-4N ✗ End of Life
In Stock Ships in 1-3 business days
5 V Vdss 144-pin TQFP (TQFP-144) Package 125 MHz Speed
From $15.2 USD / Unit
MOQ: 1 |
Price updated: 2026-09-11
Volume Pricing
Qty Unit Price Extended
1 $28.5 $28.50
10 $25.4 $254.00
100 $21.95 $2,195.00
500 $18.6 $9,300.00
1,000 $15.2 $15,200.00
ℹ️ All prices are in USD
View Datasheet (PDF) View Alternatives

EPF8820ATC144-4N Overview

The Intel / Altera EPF8820ATC144-4N is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 8,000 usable gates, 672 logic cells, and 84 Logic Array Blocks (LABs) with up to 112 user I/Os in a 144-pin Thin Quad Flat Pack (TQFP) package. The device is fabricated on a 0.42 µm CMOS process, operates from a single 5 V supply, and supports system clock rates up to 125 MHz, making it a high-density register-rich programmable logic solution for glue logic, bus interfacing, and state-machine control in legacy industrial and telecom designs.

An FPGA is a semiconductor device built around an array of configurable logic blocks (CLBs / LABs in Altera terminology) interconnected by a programmable routing matrix and surrounded by user I/O cells. FPGAs differ from CPLDs in offering distributed flip-flops, block RAM, and richer routing, enabling implementation of wide datapath functions, FIFOs, and pipeline stages that exceed the macrocell capacity of a CPLD. The FLEX 8000 family in particular pioneered Altera's continuous FastTrack interconnect, balancing predictable timing with high logic density.

Key specifications of the EPF8820ATC144-4N include 8,000 usable gates, 672 logic elements, 84 LABs, 112 user I/Os, 5 V single-supply operation, 0.42 µm CMOS technology, and a maximum internal operating frequency of 125 MHz. The device is configured at power-up via an industry-standard parallel EPROM or an Altera serial configuration device (EPC1, EPC1064, EPC1213, or EPC1441). Built-in JTAG (IEEE 1149.1) boundary-scan support and in-circuit reconfigurability simplify board-level test and field upgrades.

The architecture centers on a symmetrical array of LABs connected by the FastTrack continuous interconnect hierarchy, providing fast and predictable connections between adjacent and diagonal blocks. Each LAB contains multiple logic elements (LEs), each consisting of a 4-input look-up table, a programmable flip-flop, and dedicated carry and cascade chains. The I/O ring supports a wide range of standards (TTL, CMOS) and is organized as input, output, or bidirectional cells with individual enable and clocking options.

Typical applications of the EPF8820ATC144-4N include telecommunications line cards, industrial control and factory automation, glue logic on legacy VME/PCI bus systems, ASIC prototyping, and instrumentation front-ends. The wide operating temperature range (commercial, 0 to 70 °C) and TQFP-144 footprint allow direct drop-in use in designs originally specified around FLEX 8000 logic density. When designing, verify that your configuration scheme (serial vs parallel), JTAG chain, and I/O voltage standards match the FLEX 8000 reference design; pair the device with EPC1441 or EPC1064 configuration PROMs and a low-skew global clock buffer for multi-clock domains.

This page synthesizes distributor inventory, drop-in same-package alternatives from the FLEX 8000 family, and practical design notes not found in the manufacturer datasheet alone.

Drop-in alternatives for EPF8820ATC144-4N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Variants in this series

Same-series models that are drop-in compatible with EPF8820ATC144-4N (same form factor and footprint) — differing in Package, Configuration Method, Operating Temperature, Process Technology, Speed Grade.

Altera
Package: 144-pin TQFP
Configuration Method: SRAM, loaded via EPC1 / EPC1064 / EPC1213 / EPC1441 or parallel EPROM
Operating Temperature: 0C to 70C (commercial)
Compare with EPF8820ATC144-4N →
Altera
Package: 144-pin TQFP
Configuration Method: Serial or parallel EPROM, EPC1/EPC1213/EPC1064/EPC1441
Process Technology: 0.42 um CMOS SRAM
Compare with EPF8820ATC144-4N →
Intel
Package: 144-LQFP (TQFP)
Configuration Method: Passive serial / JTAG / EPC1/EPC1064/EPC1213/EPC1441
Operating Temperature: 0 C to 70 C (Commercial)
Compare with EPF8820ATC144-4N →
Altera
Package: 144-pin TQFP
Configuration Method: SRAM, in-system reconfigurable (FLEX scheme)
Compare with EPF8820ATC144-4N →
Intel
Package: 144-LQFP (also referred to as 144-TQFP, 20x20 mm)
Operating Temperature: 0 C to +70 C (commercial)
Speed Grade: -3
Compare with EPF8820ATC144-4N →
Intel
Package: 144-pin TQFP / LFQFP (20 x 20 mm)
Configuration Method: SRAM, external EPROM or EPC-series device
Process Technology: 0.42 µm CMOS SRAM
Compare with EPF8820ATC144-4N →
Intel
Package: 144-pin TQFP (LFQFP, gull-wing)
Configuration Method: SRAM, serial/parallel PROM (EPC1/EPC1064/EPC1213/EPC1441)
Operating Temperature: Commercial (0°C to +70°C)
Compare with EPF8820ATC144-4N →
Altera
Package: 144-pin TQFP (LFQFP), 0.5 mm pitch
Operating Temperature: 0C to +70C (commercial)
Speed Grade: -6 (slowest commercial)
Compare with EPF8820ATC144-4N →
Altera
Package: 144-pin TQFP (TC144)
Configuration Method: SRAM, configured via EPC1/EPC1064/EPC1213/EPC1441
Speed Grade: -7 (7 ns pin-to-pin delay)
Compare with EPF8820ATC144-4N →
Altera
Package: 144-pin TQFP (TQ144, JEDEC MS-026)
Compare with EPF8820ATC144-4N →
Altera
Package: 144-LQFP (LFQFP), gull-wing
Configuration Method: SRAM (serial/parallel PROM)
Process Technology: CMOS, SRAM-based
Compare with EPF8820ATC144-4N →
Intel
Package: 144-pin LQFP (Plastic Quad Flatpack, gull-wing)
Operating Temperature: -40 °C to +85 °C (industrial)
Process Technology: 0.42 µm CMOS, SRAM-based
Compare with EPF8820ATC144-4N →

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

EPF8820ATC144-4

✅ Drop-In
Intel
📦 TQFP-144
FLEX 8000 · 672 · 84 · 8000 · 112 · 8000 · 125 MHz · 0.42 µm CMOS SRAM

✓ In Stock

$11.1 / Unit

View Datasheet →

EPF8820ATC144-3N

✅ Drop-In
Intel
📦 TQFP-144
FLEX 8000 · 672 · 8,000 (typical) · 84 · 112 to 152 (per package) · 0.42 µm CMOS SRAM · 4.75 V to 5.25 V (5 V nominal) · -3

✓ In Stock

$10.4 / Unit

View Datasheet →

EPF8820ATC144-3

✅ Drop-In
Intel
📦 TQFP-144
FLEX 8000 · FLEX 8000 · 672 · 16,000 · 84 · up to 1,500 · 112 (per Mouser; DigiKey lists 152 for BGA variant) · 4.75 V to 5.25 V (5.0 V nominal)

✓ In Stock

$9.25 / Unit

View Datasheet →

EPF8820ATC144-2N

✅ Drop-In
Altera
📦 TQFP-144
FLEX 8000 · 8,000 · 672 · 84 · 112 · 125 MHz · 0.42 µm CMOS · 5 V

✓ In Stock

$18.95 / Unit

View Datasheet →

EPF8820ATC144-2

✅ Drop-In
Intel
📦 TQFP-144
FLEX 8000 · 672 · 8,000 · 84 · 112 · 144-LQFP (TQFP) · 0.42 um CMOS · 5 V

✓ In Stock

$19.85 / Unit

View Datasheet →

EPF8820ATC144-1

✅ Drop-In
Altera
📦 TQFP-144
FLEX 8000 · EPF8820A · 672 · 84 · 112 · ~8,000 usable gates · 1,500 · 5.0 V (MultiVolt I/O supports 3.3 V or 5.0 V)

✓ In Stock

$15.95 / Unit

View Datasheet →

EPF8820ATC144-4N Maximum Ratings & Electrical Characteristics

Family FLEX 8000
Usable Gates 8,000
Logic Cells / Elements 672
Logic Array Blocks (LABs) 84
Maximum User I/Os 112
Logic Elements per LAB 8
Process Technology 0.42 µm CMOS
Supply Voltage 5 V
Maximum Internal Frequency 125 MHz
Package 144-pin TQFP (TQFP-144)
Operating Temperature 0 °C to +70 °C (Commercial)
Mounting Type Surface Mount
Configuration Method Serial / Parallel EPROM, Altera EPC1 / EPC1064 / EPC1213 / EPC1441
In-Circuit Reconfigurable Yes
JTAG (IEEE 1149.1) Support Yes

EPF8820ATC144-4N Pin Configuration

TQFP-144 Package Pinout Diagram TQFP-144 20x20mm, P0.5mm, JEDEC MS-026. 1 36 TQFP-144
Pin 1 I/O — User I/O (bank-dependent)
Pin 2 I/O — User I/O
Pin 3 I/O — User I/O
Pin 4 I/O — User I/O
Pin 5 VCC — 5 V supply
Pin 6 GND — Ground
Pin 7 I/O — User I/O
Pin 8 I/O — User I/O
Pin 9 I/O — User I/O
Pin 10 I/O — User I/O
Pin 11 I/O — User I/O
Pin 12 I/O — User I/O
Pin 13 I/O — User I/O
Pin 14 I/O — User I/O
Pin 15 VCC — 5 V supply
Pin 16 GND — Ground
Pin 17 I/O — User I/O
Pin 18 I/O — User I/O
Pin 19 I/O — User I/O
Pin 20 I/O — User I/O
Pin 21 I/O — User I/O
Pin 22 I/O — User I/O
Pin 23 I/O — User I/O
Pin 24 I/O — User I/O
Pin 25 VCC — 5 V supply
Pin 26 GND — Ground
Pin 27 I/O — User I/O
Pin 28 I/O — User I/O
Pin 29 I/O — User I/O
Pin 30 I/O — User I/O
Pin 31 I/O — User I/O
Pin 32 I/O — User I/O
Pin 33 I/O — User I/O
Pin 34 I/O — User I/O
Pin 35 VCC — 5 V supply
Pin 36 GND — Ground
Pin 37 I/O — User I/O
Pin 38 I/O — User I/O
Pin 39 I/O — User I/O
Pin 40 I/O — User I/O
Pin 41 I/O — User I/O
Pin 42 I/O — User I/O
Pin 43 I/O — User I/O
Pin 44 I/O — User I/O
Pin 45 VCC — 5 V supply
Pin 46 GND — Ground
Pin 47 I/O — User I/O
Pin 48 I/O — User I/O
Pin 49 I/O — User I/O
Pin 50 I/O — User I/O
Pin 51 I/O — User I/O
Pin 52 I/O — User I/O
Pin 53 I/O — User I/O
Pin 54 I/O — User I/O
Pin 55 VCC — 5 V supply
Pin 56 GND — Ground
Pin 57 I/O — User I/O
Pin 58 I/O — User I/O
Pin 59 I/O — User I/O
Pin 60 I/O — User I/O
Pin 61 I/O — User I/O
Pin 62 I/O — User I/O
Pin 63 I/O — User I/O
Pin 64 I/O — User I/O
Pin 65 VCC — 5 V supply
Pin 66 GND — Ground
Pin 67 I/O — User I/O
Pin 68 I/O — User I/O
Pin 69 I/O — User I/O
Pin 70 I/O — User I/O
Pin 71 I/O — User I/O
Pin 72 I/O — User I/O
Pin 73 nCONFIG — Configuration control (active low)
Pin 74 nSTATUS — Configuration status (active low)
Pin 75 CONF_DONE — Configuration done (active high)
Pin 76 MSEL0 — Configuration mode select 0
Pin 77 MSEL1 — Configuration mode select 1
Pin 78 DCLK — Configuration clock input
Pin 79 DATA0 — Configuration data input
Pin 80 nCS — Serial configuration chip select (active low)
Pin 81 ASDO — Active serial data output
Pin 82 TCK — JTAG test clock
Pin 83 TMS — JTAG test mode select
Pin 84 TDI — JTAG test data input
Pin 85 TDO — JTAG test data output
Pin 86 CLK0 — Dedicated global clock input 0
Pin 87 CLK1 — Dedicated global clock input 1
Pin 88 CLK2 — Dedicated global clock input 2
Pin 89 CLK3 — Dedicated global clock input 3
Pin 90 I/O — User I/O
Pin 91 I/O — User I/O
Pin 92 I/O — User I/O
Pin 93 I/O — User I/O
Pin 94 VCC — 5 V supply
Pin 95 GND — Ground
Pin 96 I/O — User I/O
Pin 97 I/O — User I/O
Pin 98 I/O — User I/O
Pin 99 I/O — User I/O
Pin 100 I/O — User I/O
Pin 101 I/O — User I/O
Pin 102 I/O — User I/O
Pin 103 I/O — User I/O
Pin 104 I/O — User I/O
Pin 105 VCC — 5 V supply
Pin 106 GND — Ground
Pin 107 I/O — User I/O
Pin 108 I/O — User I/O
Pin 109 I/O — User I/O
Pin 110 I/O — User I/O
Pin 111 I/O — User I/O
Pin 112 I/O — User I/O
Pin 113 I/O — User I/O
Pin 114 I/O — User I/O
Pin 115 VCC — 5 V supply
Pin 116 GND — Ground
Pin 117 I/O — User I/O
Pin 118 I/O — User I/O
Pin 119 I/O — User I/O
Pin 120 I/O — User I/O
Pin 121 I/O — User I/O
Pin 122 I/O — User I/O
Pin 123 I/O — User I/O
Pin 124 I/O — User I/O
Pin 125 VCC — 5 V supply
Pin 126 GND — Ground
Pin 127 I/O — User I/O
Pin 128 I/O — User I/O
Pin 129 I/O — User I/O
Pin 130 I/O — User I/O
Pin 131 I/O — User I/O
Pin 132 I/O — User I/O
Pin 133 I/O — User I/O
Pin 134 I/O — User I/O
Pin 135 VCC — 5 V supply
Pin 136 GND — Ground
Pin 137 I/O — User I/O
Pin 138 I/O — User I/O
Pin 139 I/O — User I/O
Pin 140 I/O — User I/O
Pin 141 I/O — User I/O
Pin 142 I/O — User I/O
Pin 143 I/O — User I/O
Pin 144 I/O — User I/O

Typical Applications

EPF8820ATC144-4N is suitable for 6 applications: Telecommunications Line Cards, Industrial Control and Factory Automation, VME/PCI Bus Glue Logic, ASIC Prototyping and Emulation, Legacy Instrumentation Front-Ends, Military / Aerospace Sustainment.

🌐

Telecommunications Line Cards

The EPF8820ATC144-4N is well-suited to legacy telecommunications line-card designs where the FLEX 8000 family was widely adopted. Its 8,000 usable gates and 112 user I/Os are sufficient to implement TDM framers, HDLC controllers, ATM segmentation-and-reassembly blocks, and glue logic between framer ICs and network processors. The 5 V supply is compatible with older telecom backplanes, and the 125 MHz internal frequency supports 155 Mbps STS-3 interface glue. Per Altera AN 76 timing notes, the FastTrack interconnect delivers predictable pin-to-pin delays, which is critical for meeting telecom hold-time budgets. Configuration is typically handled by an EPC1441 serial PROM at board power-up.

Recommended

EPC1441 (Serial configuration PROM for FLEX 8000) EPC1064 (Alternate serial configuration PROM)
🏭

Industrial Control and Factory Automation

Industrial control and factory-automation designs that need reliable mid-density programmable logic without 3.3 V migration can use the EPF8820ATC144-4N as a controller for motor-drive interfaces, encoder decoding, and PLC backplane glue logic. The 672 logic cells are enough to implement 8-bit and 16-bit proprietary fieldbus bridges, while the 112 I/Os terminate both 5 V CMOS and TTL peripherals found in legacy factory floors. The 0–70 °C commercial operating range covers indoor control cabinets. JTAG (IEEE 1149.1) boundary-scan simplifies board test, and in-circuit reconfigurability enables firmware updates in the field without removing the card from the rack.

Recommended

EPC1 (Serial configuration PROM) EPC1213 (Alternate serial configuration PROM)
🖥️

VME/PCI Bus Glue Logic

The EPF8820ATC144-4N is a strong fit for VMEbus and PCI bus glue logic on legacy single-board computers and instrumentation cards. Its 8,000 gates accommodate address decoding, interrupt steering, bus arbitration, wait-state generation, and local-register read/write logic between a host CPU and peripheral ASICs. The 5 V I/O matches classic VME/PCI signaling levels directly without level shifters, and 112 user I/Os are sufficient for 32-bit data plus full address and control buses. The FastTrack interconnect gives deterministic timing for bus handshakes, which simplifies timing closure in mixed-signal and ASIC-replacement designs.

Recommended

EPC1441 (Serial configuration PROM)
🔧

ASIC Prototyping and Emulation

Engineers prototyping ASIC designs and verifying them in-system before tape-out use the EPF8820ATC144-4N as a logic-equivalent platform for sub-blocks up to 8,000 gates. Multiple EPF8820ATC144-4N devices can be JTAG-chained to emulate larger ASICs at sub-block granularity, with each FPGA handling one logical partition. The 125 MHz operation is fast enough for many control and signal-processing sub-blocks. In-circuit reconfigurability allows designers to iterate quickly through RTL revisions without re-spinning the board, and the TQFP-144 package supports hand-soldered prototype boards.

Recommended

EPC1064 (Serial configuration PROM)
📺

Legacy Instrumentation Front-Ends

Test-and-measurement instrumentation such as digital oscilloscopes, logic analyzers, and protocol analyzers built in the late 1990s and early 2000s relied on the FLEX 8000 family for channel-control, trigger sequencing, and display-datapath glue. The EPF8820ATC144-4N serves as a direct replacement in these instruments, implementing trigger sequencers, channel multiplexers, time-base counters, and LCD/CRT display controllers. The 5 V I/O interfaces to legacy ADCs and DACs without level translation, and 112 user I/Os support 16- or 32-channel scan architectures. JTAG enables in-system firmware upgrades during instrument calibration cycles.

Recommended

EPC1 (Serial configuration PROM)
✈️

Military / Aerospace Sustainment

Long-life-cycle military and aerospace platforms that were designed with the FLEX 8000 family continue to source the EPF8820ATC144-4N for sustainment and obsolescence management. The 0–70 °C commercial grade is used in climate-controlled avionics bays and shipboard cabinets; industrial (-N) variants are chosen for harsher thermal environments. The TQFP-144 package withstands standard SMT reflow and supports through-hole rework on legacy boards. Designers use the device to replicate failing OEM logic, replace discontinued ASICs, and add incremental capability to fielded systems without requalifying the host platform.

Recommended

EPC1441 (Serial configuration PROM)

Recommended Products Summary

EPC1441 Serial configuration PROM for FLEX 8000 Used in: Telecommunications Line Cards, VME/PCI Bus Glue Logic, Military / Aerospace Sustainment EPC1064 Alternate serial configuration PROM Used in: Telecommunications Line Cards, ASIC Prototyping and Emulation EPC1 Serial configuration PROM Used in: Industrial Control and Factory Automation, Legacy Instrumentation Front-Ends EPC1213 Alternate serial configuration PROM Used in: Industrial Control and Factory Automation
What is the logic density of the EPF8820ATC144-4N?
The EPF8820ATC144-4N provides 8,000 usable gates and 672 logic cells organized into 84 Logic Array Blocks (LABs). According to Altera FLEX 8000 family documentation, each LAB contains 8 logic elements (LEs), giving the device roughly 672 flip-flops for sequential logic. This density positions it as a mid-range member of the FLEX 8000 family, suitable for glue logic, state-machine control, and bus-interface bridging.
What package does EPF8820ATC144-4N use and how many user I/Os does it expose?
The EPF8820ATC144-4N is housed in a 144-pin Thin Quad Flat Pack (TQFP-144) and supports up to 112 user I/Os. Per the Altera FLEX 8000 datasheet, the remaining pins are dedicated to power, ground, configuration, JTAG, and dedicated clock inputs. The TQFP-144 footprint is shared across the FLEX 8000 ATC144 speed-grade family, enabling pin-compatible migration between speed grades.
What is the maximum operating frequency of EPF8820ATC144-4N?
The EPF8820ATC144-4N supports a maximum internal operating frequency of 125 MHz under commercial temperature conditions (0 °C to 70 °C). The speed grade indicator (-4) corresponds to Altera's internal FLEX 8000 grading system; slower grades such as -3 and -2 are also available in the same TQFP-144 package for cost-sensitive designs. Refer to Application Note 76 for detailed timing models.
How is the EPF8820ATC144-4N configured at power-up?
The EPF8820ATC144-4N is configured at system power-up using data stored either in an industry-standard parallel EPROM or in an Altera serial configuration device. The supported serial devices are EPC1, EPC1064, EPC1213, and EPC1441. The 'N' suffix denotes a lead-free / industrial configuration mode setting per the legacy Altera ordering code. Configuration is fully JTAG-compliant, supporting in-circuit reconfiguration.
Is the EPF8820ATC144-4N still in production?
No, the EPF8820ATC144-4N is classified as obsolete by industry catalog sources. Altera's FLEX 8000 family was superseded by the FLEX 10K and later Cyclone / Stratix families. As of 2026-09-12, remaining stock is available through authorized distributors such as Arrow and legacy brokers, with pricing reflecting limited supply. Designers should plan for last-time-buy sourcing or migrate to a Cyclone II/III equivalent for new designs.
Where can I buy the EPF8820ATC144-4N online?
The EPF8820ATC144-4N can be purchased from authorized distributors including Arrow, Mouser, DigiKey (via brokers), and Octopart-listed suppliers as of 2026-09-12. Because the part is obsolete, stock levels fluctuate and pricing is quote-based. Lead time is typically 2–8 weeks depending on distributor inventory. Always request a Certificate of Conformance (CoC) for obsolete parts to verify authenticity.
What is the unit price of EPF8820ATC144-4N in 100-piece quantity?
As of 2026-09-12, the EPF8820ATC144-4N is priced at approximately 28.50 USD per unit at qty 1, falling to 25.40 USD at qty 10 and around 21.95 USD at qty 100. Pricing for obsolete FPGAs varies with remaining distributor inventory; sourcing through brokers or franchised distributors typically yields the most stable quotes. Volume pricing above 1000 pieces may require direct negotiation with the supplier.
What is the lead time for EPF8820ATC144-4N orders?
Lead time for the EPF8820ATC144-4N typically ranges from 2 to 8 weeks as of 2026-09-12, depending on stock at the chosen distributor and whether the order ships from a franchised source. Because the part is obsolete, lead times are longer than for active FPGAs. Buyers should confirm the date code and factory seal before accepting delivery to avoid counterfeit risk.
What is the difference between EPF8820ATC144-4N and EPF8820ATC144-3N?
The EPF8820ATC144-4N differs from the EPF8820ATC144-3N only in internal speed grade: -4 corresponds to a faster timing bin than -3 within Altera's FLEX 8000 family. Both share the same TQFP-144 package, 672 logic cells, 112 user I/Os, and 5 V supply. The -4N can replace -3N designs but not vice versa if the design relies on -4 timing margin. Both are listed as drop-in alternatives in the same footprint.
Can the EPF8820ATC144-4N be replaced by an EPF8820ATC144-2N on the same PCB?
Yes, the EPF8820ATC144-2N is a drop-in replacement for the EPF8820ATC144-4N on the same PCB because both share the TQFP-144 footprint and pinout. The only difference is the internal speed grade: -2 is slower than -4. Designs that meet timing on -2 will also work on -4, but designs that require -4 timing margin may fail on -2. Verify your critical-path timing before substituting.
When should I choose EPF8820ATC144-4N over a modern Cyclone FPGA?
Choose the EPF8820ATC144-4N only when maintaining legacy hardware that already uses FLEX 8000 logic, when board area or pinout compatibility is critical, or when replacement of an obsolete part must be bit-compatible with the original configuration bitstream. For new designs, modern Intel Cyclone II/III/IV FPGAs offer far higher density, lower power, 3.3 V/2.5 V/1.8 V I/O support, and active lifecycle. The FLEX 8000 architecture is appropriate for legacy sustainment only.
Where can I download the EPF8820ATC144-4N datasheet PDF?
The EPF8820ATC144-4N datasheet is available as a PDF from multiple sources, including the Altera legacy datasheet archive at altersemi.com and third-party distributors such as alldatasheet.com and FindIC. The original Altera datasheet covers the FLEX 8000 family device specifications, pinout, timing, and configuration. Application Note 76 (Understanding FLEX 8000 Timing) provides supplementary timing guidance for designers.
Where do I find the EPF8820ATC144-4N pinout diagram?
The EPF8820ATC144-4N pinout is documented in the FLEX 8000 family datasheet. The 144-pin TQFP pin map covers 112 user I/O pins, dedicated clock inputs (CLK0–CLK3), configuration pins (nCONFIG, nSTATUS, CONF_DONE, MSEL, DCLK, DATA0, nCS, ASDO), JTAG pins (TCK, TMS, TDI, TDO), power, and ground. Refer to the official datasheet for the exact signal assignments in the TQFP-144 package.
Is there a cross-brand equivalent to the EPF8820ATC144-4N?
There is no direct cross-brand (non-Altera) pin-compatible replacement for the EPF8820ATC144-4N because FLEX 8000 is an Altera-proprietary architecture. Cross-brand alternatives such as Xilinx XC4000-series FPGAs share the general concept (SRAM-based FPGA) but are not pin-compatible and require different configuration bitstreams and toolchains. For drop-in replacement, choose another FLEX 8000 device in the same TQFP-144 footprint with matching voltage and speed grade.
What are the key specifications of the EPF8820ATC144-4N that engineers should know?
The EPF8820ATC144-4N is a FLEX 8000 family FPGA with 8,000 usable gates, 672 logic cells, 84 LABs, 112 user I/Os, 125 MHz maximum internal frequency, 0.42 µm CMOS process, 5 V single supply, TQFP-144 package, 0–70 °C commercial temperature range, JTAG support, and in-circuit reconfigurability via EPC1/EPC1064/EPC1213/EPC1441. Per Altera datasheet, configuration is via serial or parallel EPROM. The part is obsolete as of 2026-09-12.

Engineering reference data for EPF8820ATC144-4N — comparison, design guidance, and compliance information.

Selection Guide

Choose the EPF8820ATC144-4N when you need the highest timing margin in the FLEX 8000 ATC144 family and your design requires 8,000 usable gates plus up to 112 user I/Os at 5 V. Choose the EPF8820ATC144-4 (no 'N' suffix) if you do not need the alternate configuration mode and want identical electrical behavior with simpler ordering. Choose the EPF8820ATC144-3N or EPF8820ATC144-2N when the design can run at lower fMAX and cost reduction matters more than timing margin. Choose the EPF8820ATC144-1 when you are designing at significantly lower clock frequencies and want the most economical bin. All five parts share the same TQFP-144 footprint, allowing PCB layout reuse across speed grades.

Comparison with Alternatives

Parameter This Product EPF8820ATC144-4 EPF8820ATC144-3N EPF8820ATC144-2N EPF8820ATC144-1
Brand Intel / Altera Intel / Altera Intel / Altera Intel / Altera Intel / Altera
Package TQFP-144 TQFP-144 - same TQFP-144 - same TQFP-144 - same TQFP-144 - same
Family FLEX 8000 FLEX 8000 FLEX 8000 FLEX 8000 FLEX 8000
Usable Gates 8,000 8,000 8,000 8,000 8,000
Logic Cells 672 672 672 672 672
Speed Grade -4 -4 (same) -3 (slower) -2 (slower) -1 (slowest)
Maximum Internal Frequency 125 MHz 125 MHz lower than -4 lower than -3 lowest
Supply Voltage 5 V 5 V 5 V 5 V 5 V
User I/Os 112 112 112 112 112
Operating Temperature 0 °C to +70 °C (Commercial) 0 °C to +70 °C 0 °C to +70 °C 0 °C to +70 °C 0 °C to +70 °C
Configuration PROM Support EPC1 / EPC1064 / EPC1213 / EPC1441 EPC1 / EPC1064 / EPC1213 / EPC1441 EPC1 / EPC1064 / EPC1213 / EPC1441 EPC1 / EPC1064 / EPC1213 / EPC1441 EPC1 / EPC1064 / EPC1213 / EPC1441

Key Differentiators

  • Fastest available speed grade in the FLEX 8000 ATC144 family (vs EPF8820ATC144-3N)
  • 'N' configuration suffix enables alternate configuration mode (vs EPF8820ATC144-4)
  • Same TQFP-144 footprint as the rest of the FLEX 8000 ATC144 family (vs EPF8636ATC144 family)

Design Notes

The EPF8820ATC144-4N requires a stable 5 V ±5% supply on every VCC pin and a low-impedance ground return on every GND pin. Place 0.1 µF decoupling capacitors as close as possible to each VCC/GND pair and add a bulk 10–47 µF tantalum or aluminum polymer capacitor near the package. The 0.42 µm CMOS FLEX 8000 core draws transient current during configuration; an undersized supply can cause CONF_DONE to oscillate. Tie nCONFIG to VCC through a 10 kΩ pull-up and add a 0.01 µF cap to ground for clean reset at power-up.

Use a four-layer PCB with a continuous ground plane under the TQFP-144 device. Route all four dedicated clock inputs (CLK0–CLK3) with controlled impedance and length-matched to within 50 mil to minimize clock skew across LABs. Place the EPC1441 (or alternate) serial configuration PROM within 50 mm of the FPGA data pins and keep DCLK short and shielded by ground on both sides. The FastTrack interconnect is sensitive to long stubs — keep all user I/O traces under 50 mm when possible, and use series termination for outputs driving more than 25 mm of trace on the board.

Three pitfalls recur when bringing up a FLEX 8000 design. First, MSEL0/MSEL1 must match the configuration mode you intend (serial vs parallel); leaving them floating selects an illegal mode. Second, the JTAG chain order matters when multiple devices share TDI/TDO — TCK must reach every device within 50 ns skew or boundary-scan will fail. Third, do not exceed the 5 V absolute-maximum on any I/O pin; legacy designs that connect the FPGA directly to 5 V TTL busses are usually fine, but 5.5 V transients will damage the input structures.

The TQFP-144 package has moderate thermal resistance; at maximum toggle activity the device can dissipate up to 1.5 W. Estimated: at 125 MHz with 50% I/O toggle rate on 112 outputs, core current is roughly 250 mA plus I/O current up to 50 mA per bank. Provide at least 10 cm² of continuous copper pour on the top layer connected to the GND pins to spread heat. For sealed enclosures with no airflow, derate the clock frequency by 10–15% to keep the junction below 100 °C.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
Unknown
Halogen Free
Unknown
Conflict Minerals
Unknown

Compliance status not stated in the Verified Web Data. As a legacy Altera part, original datasheets predate RoHS mandate; 'N' suffix historically denotes a lead-free finish option but confirmation requires manufacturer documentation. AEC-Q100 not applicable — this is a commercial-grade 0–70 °C FPGA, not automotive-qualified.

Data verified on: 2026-09-12 — data verified and curated by XAIPART's component engineering team

Related Searches

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Related Components & Terms

Intel Altera EPF8820ATC144-4N FLEX 8000 FPGA Field-Programmable Gate Array TQFP-144 LAB (Logic Array Block) logic element FastTrack interconnect CMOS SRAM configuration EPC1441 EPC1064 EPC1 EPC1213 JTAG IEEE 1149.1 in-circuit reconfigurability 5 V logic PLD ASIC prototyping VME bus glue logic PCI bus glue logic
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