EPF8820ATC144-7 - FLEX 8000 FPGA 672-Cell 7ns TQFP-144 | Altera
N.º de pieza: EPF8820ATC144-7 ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.75 | $9.750,00 |
EPF8820ATC144-7 Descripción general
A field-programmable gate array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable routing channels, and programmable I/O cells. Designers describe logic at the register-transfer level using HDLs (VHDL or Verilog) and the synthesis toolchain maps the design into the bitstream that configures SRAM look-up tables, flip-flops, and interconnect. FPGAs sit in the broader programmable logic hierarchy: PLD (programmable logic device) is the umbrella term, SPLD/CPLD represent simpler non-volatile architectures, while SRAM-based FPGAs like FLEX 8000 offer the highest logic density and re-programmability.
Key features of the EPF8820ATC144-7 include 84 Logic Array Blocks (LABs), 112 user I/O pins, a 5V core supply with MultiVolt I/O support (3.3V or 5.0V on the I/O bank for all packages except 84-pin variants), and JTAG-based boundary-scan testing per IEEE 1149.1. The architecture uses continuous FastTrack interconnect routing and incorporates embedded RAM blocks and a per-pin tri-state buffer for bus-oriented designs. The TQFP-144 footprint exposes 112 user I/Os while leaving the remaining pins for power, ground, configuration, and JTAG signals.
Typical applications include glue-logic integration, peripheral bus bridging (ISA-to-PCI bridges in legacy PCs), industrial control state machines, prototyping ASICs, and replacement of multiple TTL/CMOS 74-series packages. Engineers also deploy the EPF8820ATC144-7 in telecommunications line cards, test equipment front-ends, and avionics subsystems where 5V tolerance and through-hole-compatible surface-mount packages are required. The FLEX 8000 family was a workhorse of late-1990s and early-2000s designs, and many systems still rely on these parts for long-life-cycle support.
When designing with the EPF8820ATC144-7, ensure your Quartus II or MAX+PLUS II toolchain targets the FLEX 8000 device family and that the configuration EPROM (EPC1/EPC1064/EPC1441) is correctly selected for the device density. Watch the -7 speed grade carefully - it is the slowest EPF8820A bin and may not meet timing budgets that the -3 or -4 grades can. The part is now in NRND (Not Recommended for New Designs) lifecycle, so consider Cyclone or MAX families for new projects.
Alternativas directas para EPF8820ATC144-7 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con EPF8820ATC144-7 (mismo factor de forma y huella) — difiere en Package, Configuration Method, Operating Temperature, Process Technology, Speed Grade.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
EPF8820ATC144-4
✅ Sustitución directa✓ En stock
$11.1 / unidad
Ver hoja de datos →EPF8820ATC144-4N
✅ Sustitución directa✓ En stock
$15.2 / unidad
Ver hoja de datos →EPF8820ATC144-3
✅ Sustitución directa✓ En stock
$9.25 / unidad
Ver hoja de datos →EPF8820ATC144-3N
✅ Sustitución directa✓ En stock
$10.4 / unidad
Ver hoja de datos →EPF8820ATC144-2
✅ Sustitución directa✓ En stock
$19.85 / unidad
Ver hoja de datos →EPF8820ATC144-2N
✅ Sustitución directa✓ En stock
$18.95 / unidad
Ver hoja de datos →EPF8820ATC144-1
✅ Sustitución directa✓ En stock
$15.95 / unidad
Ver hoja de datos →EPF8820ATC144-7 Valores máximos y características eléctricas
| Family | FLEX 8000 |
| Device | EPF8820A |
| Usable Gates | 8,000 |
| Logic Cells | 672 |
| Logic Array Blocks (LABs) | 84 |
| User I/O Pins | 112 |
| Speed Grade | -7 (7 ns pin-to-pin delay) |
| Technology Node | 0.42 µm CMOS SRAM |
| Core Supply Voltage | 5 V |
| I/O Supply Voltage (MultiVolt) | 3.3 V or 5.0 V |
| Maximum Frequency | 125 MHz |
| Encapsulado | 144-pin TQFP (TC144) |
| Configuration Method | SRAM, configured via EPC1/EPC1064/EPC1213/EPC1441 |
| Boundary Scan | IEEE 1149.1 JTAG |
| In-Circuit Reconfigurability | Yes (ICR) |
| Operating Temperature (commercial) | 0 °C to +70 °C |
Guía de configuración de pines de EPF8820ATC144-7 144-pin tqfp (tc144)
Configuración de pines para EPF8820ATC144-7 (encapsulado 144-pin tqfp (tc144)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para EPF8820ATC144-7.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
EPF8820ATC144-7 es adecuado para 6 aplicacións: Legacy ISA-to-PCI Bus Bridge, Industrial Control State Machine, Telecom Line Card Interface Logic, Test & Measurement Front-End, Avionics Subsystem Glue Logic, ASIC Prototyping and TTL Replacement.
Legacy ISA-to-PCI Bus Bridge
The EPF8820ATC144-7's 112 user I/Os and 5V MultiVolt tolerance make it a practical glue-logic bridge between legacy ISA buses (8/16-bit at 8 MHz) and 32-bit PCI add-in cards. Its 672 logic cells and 8,000 usable gates are sufficient to implement address decoding, byte-swapping, and interrupt steering logic that previously required 6-10 discrete 74-series TTL packages. The -7 speed grade meets ISA timing with margin but is borderline for 33 MHz PCI, where the -4 or -3 grade would be safer. Designers target this part when modernizing industrial PCs that must remain pin- and footprint-compatible with 1990s motherboards, allowing drop-in upgrade of programmable logic without disturbing the rest of the BOM.
Recomendado
Industrial Control State Machine
Factory automation controllers frequently use the EPF8820ATC144-7 to consolidate PLC ladder-logic equivalents into a single programmable device. The 84 LABs support complex multi-state sequencing for conveyor control, valve actuation, and motor start/stop interlocks, while the 5V I/O directly interfaces with industrial sensor outputs (24V tolerant via external resistor dividers). The -7 speed grade is well matched to sub-millisecond scan times typical of PLC scan cycles. Long-term availability makes this part attractive for machinery with 15-20 year service lifetimes where revalidation costs would dominate redesign expense.
Recomendado
Telecom Line Card Interface Logic
Telecommunications line cards in legacy T1/E1 and early-SDH equipment deploy the EPF8820ATC144-7 to implement framing, alarm monitoring, and timeslot assignment between framer ICs and backplane connectors. The 112 I/Os accommodate parallel HDB3-coded data buses, while the embedded SRAM blocks in the FLEX 8000 fabric implement small elastic stores for jitter buffering. The part's 5V tolerance interfaces directly with bipolar ECL-to-TTL translator outputs common in telecom silicon of the era. Designers value the long-life-cycle support and the broad installed base of FLEX 8000 toolchain expertise within telecom OEMs.
Recomendado
Test & Measurement Front-End
Bench-top instrumentation such as logic analyzers, protocol exercisers, and switch matrices use the EPF8820ATC144-7 to implement pattern generation, timing measurement, and front-panel switching. The 5V MultiVolt I/O interfaces directly with TTL/CMOS probe pods, and the 672-cell capacity is sufficient for 32-channel pattern generators with 8K-deep vectors stored in external SRAM. The 7 ns grade accommodates pattern rates up to about 50 MHz, which covers most serial protocol decode applications including SPI, I2C, and UART. The exposed JTAG boundary scan simplifies board-level test, a hallmark feature of FLEX 8000 designs.
Recomendado
Avionics Subsystem Glue Logic
Military and commercial avionics subsystems use the EPF8820ATC144-7 to consolidate ARINC 429, MIL-STD-1553, and discrete I/O handling into a single programmable device. The 5V tolerance matches legacy avionics bus voltages, and the 0-70 °C commercial grade is acceptable for cabin and cockpit systems. For harsher environments, designers select the industrial 'I' grade or use the part inside an environmentally sealed chassis. The long lifecycle of avionics programs (often 25-30 years) makes the NRND status a critical procurement risk that must be mitigated with last-time-buy stock or qualified substitute planning.
Recomendado
ASIC Prototyping and TTL Replacement
Before committing to a mask-programmed gate array, engineering teams use the EPF8820ATC144-7 to prototype and validate the full system design at clock speeds representative of the final ASIC. The 672 cells and 8K usable gates emulate ASIC gate counts up to about 15-20K gates with typical 3-4x utilization. Designers also use the part to consolidate a board full of discrete 74LS/74ALS/74F TTL into one IC, reducing board area by 50-70% and improving noise immunity. Once the design is validated, the FLEX 8000 bitstream can be re-spun in minutes versus ASIC mask cycles of 8-12 weeks.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para EPF8820ATC144-7 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | EPF8820ATC144-4 | EPF8820ATC144-4N | EPF8820ATC144-3 | EPF8820ATC144-3N | EPF8820ATC144-2 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | TQFP-144 | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Speed Grade | -7 (7 ns) | -4 (4 ns) | -4 (4 ns) | -3 (3 ns) | -3 (3 ns) | -2 (2 ns) |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 |
| Logic Cells | 672 | 672 | 672 | 672 | 672 | 672 |
| User I/Os | 112 | 112 | 112 | 112 | 112 | 112 |
| Lifecycle | NRND | NRND | NRND | NRND | NRND | NRND |
Diferenciadores clave
- Slowest commercial bin (-7) suited for cost-sensitive glue logic (frente a EPF8820ATC144-4)
- MultiVolt I/O supports mixed 3.3V/5.0V system designs (frente a EPF8452ATC100-4)
- In-circuit reconfigurability via serial EPROM (frente a XC4003E (Xilinx 4000E family))
Notas de diseño
Estimated: at a 7 ns pin-to-pin delay in the -7 grade, the maximum toggle rate of a single flip-flop is approximately 1/(2×7ns) = 71 MHz before setup-time violations occur. Designs targeting 33 MHz PCI or 50 MHz synchronous buses must use the -4 or -3 grade instead. Do not assume the -7 grade is interchangeable with faster bins for timing closure without re-running static timing analysis in MAX+PLUS II or Quartus II.
The EPF8820ATC144-7 requires a stable 5V ±5% VCC supply with at least 100 mA of headroom for I/O switching transients. Decouple VCC with a 22 µF tantalum bulk capacitor and a 0.1 µF ceramic capacitor per VCC pin pair. During configuration, ICC can briefly spike to 300 mA; ensure the regulator's current limit and thermal dissipation accommodate this transient. The MultiVolt I/O bank can be powered from 3.3V or 5.0V independently of VCC, but both must be present for normal operation.
The 144-pin TQFP has a 0.5 mm pitch and requires careful PCB layout: use 4-mil traces with 4-mil spaces, length-matched differential pairs for clock nets, and a solid ground plane beneath the device. JTAG signals (TCK, TMS, TDI, TDO, TRST) should be guarded with ground traces to prevent noise-induced boundary-scan failures. Reserve space on the board for the EPC1/EPC1441 configuration EPROM in an 8-pin or 20-pin package adjacent to the FPGA.
Información de cumplimiento
RoHS/lead-free status was not present in the verified web data; the 'N' suffix in EPF8820ATC144-4N indicates a lead-free finish variant, but the -7 grade suffix does not explicitly confirm lead-free compliance. AEC-Q100 is not applicable as FLEX 8000 is not automotive-qualified.
