EPF8820AQC208-4 - FLEX 8000 FPGA, 672 Cells, 152 I/O, 5V | Intel
부품 번호: EPF8820AQC208-4 ⚠ 최종 구매| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $47.5 | $47.50 |
| 10 | $42.75 | $427.50 |
| 100 | $38.2 | $3,820.00 |
| 250 | $35.1 | $8,775.00 |
| 500 | $32.8 | $16,400.00 |
EPF8820AQC208-4 개요
A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the density of gate arrays with the design flexibility of in-system reprogrammability. FPGAs occupy a tier between simple PLDs (PAL/GAL, CPLDs) and ASICs in the broader semiconductor hierarchy: programmable logic -> PLD -> CPLD/FPGA -> programmable semiconductor. The FLEX 8000 series was Altera's first generation of register-rich, SRAM-based FPGAs with in-circuit reconfigurability, marking a transition away from one-time programmable fuse-link devices.
Key features of the EPF8820AQC208-4 include 84 Logic Array Blocks (LABs), 152 user I/O pins, MultiVolt I/O support for 3.3 V and 5.0 V interface operation, in-circuit reconfigurability (ICR) via external configuration devices, and a continuous commercial temperature range of 0 °C to 70 °C. The PQFP-208 package provides a robust gull-wing lead footprint compatible with standard surface-mount assembly lines.
From an architectural standpoint, the EPF8820AQC208-4 uses an SRAM-based look-up-table (LUT) fabric with embedded register-rich LABs, a fast continuous interconnect network, and dedicated I/O cells supporting JTAG boundary-scan and MultiVolt I/O standards. In-circuit reconfigurability allows the device to be reprogrammed on the PCB without removing the part, a major advantage over fuse-based PLDs.
Typical applications for the EPF8820AQC208-4 include industrial glue-logic replacement, PCI bus interface bridging, telecommunications line-card controllers, and legacy embedded control systems. The 152 I/Os make it attractive for designs that need to consolidate multiple discrete 74-series logic functions onto a single programmable device.
When designing with this device, note that it is now a mature legacy part with limited distributor stock; engineers should verify long-term availability or plan a migration to a Cyclone-family replacement before entering volume production. The 5 V VCCIO option supports direct interfacing to legacy TTL/CMOS logic without level shifters.
This page synthesizes distributor pricing, drop-in same-family alternatives, and design notes not found in the original FLEX 8000 datasheet, providing practical sourcing and engineering guidance for engineers maintaining legacy FLEX 8000 designs.
드롭인 대체품: EPF8820AQC208-4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: EPF8820AQC208-4 (동일 폼 팩터 및 풋프린트) — 차이점: Package, Process Technology, Operating Temperature, Configuration Method, Logic Array Blocks (LABs).
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
EPF8820AQC208-3N
✅ 드롭인✓ 재고 있음
$11.4 / 개
데이터시트 보기 →EPF8820AQC208-3
✅ 드롭인✓ 재고 있음
$18.95 / 개
데이터시트 보기 →EPF8820AQC208-2N
✅ 드롭인✓ 재고 있음
$5.1 / 개
데이터시트 보기 →EPF8820AQC208-2
✅ 드롭인✓ 재고 있음
$22.8 / 개
데이터시트 보기 →EPF8820AQC208-4N
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
EPF8636AQC208-4N
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$10.4 / 개
데이터시트 보기 →EPF8820AQC208-4 최대 정격 & 전기적 특성
| Product Family | FLEX 8000 |
| Logic Elements / Cells | 672 |
| Usable Gates | 8,000 |
| Logic Array Blocks (LABs) | 84 |
| User I/Os | 152 |
| Maximum Operating Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS |
| Supply Voltage (Core) | 5 V |
| I/O Voltage Support | 3.3 V or 5.0 V (MultiVolt) |
| 동작 온도 | 0 °C to 70 °C (Commercial) |
| Package Type | 208-BFQFP / PQFP-208 (gull-wing) |
| 실장 유형 | Surface Mount |
| Reconfigurability | In-Circuit Reconfigurable (SRAM) |
| Logic Family | CMOS |
| RoHS 상태 | Compliant (lead-free -4 suffix per datasheet ordering info) |
EPF8820AQC208-4 208-bfqfp / pqfp-208 (gull-wing) 핀 구성 가이드
EPF8820AQC208-4(208-bfqfp / pqfp-208 (gull-wing) 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: EPF8820AQC208-4.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
EPF8820AQC208-4 적합 용도: 6 애플리케이션s: Legacy Industrial Glue Logic Consolidation, PCI Bus Interface and Bridge Logic, Telecommunications Line-Card Controllers, Legacy Embedded Control Systems, Test and Measurement Front-End Logic, Military/Aerospace Legacy Avionics.
Legacy Industrial Glue Logic Consolidation
The EPF8820AQC208-4 fits legacy industrial glue-logic replacement because it consolidates 8K gates of discrete 74-series logic onto a single in-circuit-reconfigurable device. Its 152 user I/Os accommodate the high pin count typical of multi-chip glue-logic boards, while the PQFP-208 package survives the mechanical vibration profiles of factory-floor equipment. The 5 V MultiVolt I/O interfaces directly to TTL logic without level shifters, preserving the original BOM voltage rails. Compared with discrete 74HC/74LS implementations, the FLEX 8000 FPGA reduces board area, simplifies ECOs, and enables post-assembly logic revisions through in-circuit programming via JTAG. The 0-70 °C commercial temperature range covers most indoor industrial enclosures.
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PCI Bus Interface and Bridge Logic
The EPF8820AQC208-4 was widely used for PCI bus interface bridges in the late 1990s and early 2000s because its 8K-gate capacity comfortably implemented 32-bit PCI target or master state machines plus DMA and interrupt controllers. The 125 MHz internal frequency supports 33 MHz PCI clocking with timing margin to spare. The 152 I/Os in PQFP-208 handle both the 32-bit PCI bus plus local-bus side signals, plus parity and arbitration pins. 5 V VCCIO matches the original PCI 5 V signaling environment (pre-PCI 3.3 V). Engineers maintaining legacy PCI cards in industrial PCs, medical instruments, and telecommunications line cards continue to source this part.
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Telecommunications Line-Card Controllers
The EPF8820AQC208-4 served telecom line-card controllers implementing HDLC framing, T1/E1 time-slot management, and low-speed serial multiplexing. The 672 logic cells and 8K usable gates fit these control-plane functions while leaving headroom for proprietary vendor extensions. Its 5 V core tolerates the +5 V supplies common in legacy central-office equipment, and the PQFP-208 package is robust against the conformal coating and wave-solder rework typical of telecom hardware. The SRAM-based in-circuit reconfigurability allowed field firmware updates via JTAG without board removal. Modern replacements are typically Lattice MachXO2/3 or Intel MAX V CPLDs.
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Legacy Embedded Control Systems
The EPF8820AQC208-4 is well-suited as a peripheral expansion and custom I/O controller for legacy embedded microcontroller boards. Its 152 I/Os extend the host MCU's GPIO count, and the SRAM-based fabric enables state-machine, PWM, encoder, and custom-protocol peripherals to be implemented in hardware rather than software. The 5 V tolerance allows direct interfacing to legacy 8051, 68HC11, or x86 host systems without level translation. In-circuit reconfigurability enables field updates through the JTAG port. The commercial 0-70 °C temperature grade covers most indoor cabinet and chassis-mount embedded applications.
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Test and Measurement Front-End Logic
The EPF8820AQC208-4 functions as the timing-and-control FPGA in legacy test and measurement equipment, generating stimulus patterns, capturing response waveforms, and routing signals to ADC/DAC channels. The 8K-gate density is sufficient for multi-channel digital pattern generation, while the 152 I/Os accommodate the many parallel test points required for mixed-signal test. The 125 MHz internal clock generates sub-ns timing edges when paired with the -2 speed grade. The 5 V VCCIO directly drives TTL/CMOS test fixtures from the 1990s era. PQFP-208 is hand-solderable for prototype rework.
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Military/Aerospace Legacy Avionics
The EPF8820AQC208-4 was specified into military and aerospace avionics designs of the late 1990s as a redundant control FPGA whose SRAM-based fabric allowed in-flight firmware updates via mission data loader. The PQFP-208 package is suitable for through-hole-converted-to-SMT board assemblies used in ruggedized enclosures. Although modern military programs have migrated to radiation-hardened FPGAs (Microsemi/Actel RTAX), long-life sustainment programs still procure the EPF8820AQC208-4 as a form-fit-function replacement. Source through authorized distributors with full traceability documentation.
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추천 제품 요약
엔지니어링 참조 데이터: EPF8820AQC208-4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | EPF8820AQC208-3N | EPF8820AQC208-3 | EPF8820AQC208-2N | EPF8820AQC208-2 | EPF8820AQC208-4N | EPF8636AQC208-4N |
|---|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel | Intel | Intel | Intel | Intel | Intel |
| Package | PQFP-208 | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Speed Grade | -4 (slowest) | -3 (mid) | -3 (mid) | -2 (fastest) | -2 (fastest) | -4 (slowest) | -4 (slowest) |
| Logic Cells | 672 | 672 | 672 | 672 | 672 | 672 | ~432 |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 | 4,000 |
| User I/Os | 152 | 152 | 152 | 152 | 152 | 152 | 148 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
주요 차별점
- Slowest commercial speed grade (-4) for cost-optimized legacy designs (vs EPF8820AQC208-3)
- Highest-density PQFP-208 pin count (152 I/Os) within the FLEX 8000 family (vs EPF8636AQC208-4N)
- In-circuit reconfigurability via SRAM-based fabric (vs MAX 7000-series CPLD (EPM7128S))
설계 노트
The EPF8820AQC208-4 requires a clean +5 V supply at typically 100-300 mA depending on logic utilization and toggle rate. Place 0.1 µF ceramic decoupling capacitors near every VCC pin (the PQFP-208 has multiple VCC/GND pairs) and a bulk 47-100 µF tantalum or aluminum electrolytic at the board power entry. The SRAM-based configuration memory draws continuous bias current even when logic is idle; unlike CPLDs, the FLEX 8000 cannot be powered down to zero quiescent current without losing configuration. Estimate: at 50% utilization and 50 MHz toggle rate, ICC ≈ 150 mA, so the regulator must source at least 250 mA with headroom.
The PQFP-208 package has a 0.5 mm lead pitch and a 30.6 mm × 30.6 mm body; allocate a minimum 4-layer PCB with a continuous ground plane beneath the device to provide thermal spreading and controlled impedance for I/O traces. Each output pin can source/sink up to 25 mA per the FLEX 8000 datasheet, so route high-current outputs with 0.2 mm wide traces or use a fan-out to multiple vias. Keep configuration-related signals (nCONFIG, nSTATUS, CONF_DONE, DCLK) short and away from switching I/O to avoid configuration failure during power-up.
Common pitfalls when designing with the EPF8820AQC208-4: (1) forgetting that the device loses its configuration on power-down, so an external configuration EEPROM (EPC1, EPC2, EPCQ) is mandatory for non-volatile designs; (2) confusing the 5 V VCCINT core with the MultiVolt VCCIO - both must be present; (3) using the -4 speed grade for timing-critical paths when the -3 or -2 variant is required; (4) failing to terminate clock inputs when driving with long traces; (5) assuming modern Altera/Intel Quartus software supports FLEX 8000 - the latest fully-supported Quartus version is Quartus II 13.0sp1, after which support was dropped. Plan tooling lifecycle accordingly.
The PQFP-208 lead frame has approximately 1-2 nH lead inductance per pin; this can cause ringing on high-speed outputs (>50 MHz). Place 33 Ω series damping resistors on outputs driving >2 inch traces, and use a continuous ground return path beneath each signal trace. For clock outputs, drive from a dedicated PLL/global clock buffer pin (the FLEX 8000 has 4 dedicated clock inputs) rather than a general-purpose I/O. Keep JTAG signals (TCK, TMS, TDI, TDO) away from high-frequency switching nets to avoid programming failures during in-circuit reconfiguration.
규정 준수 정보
RoHS compliance verified by the -4 speed grade suffix and lead-free PQFP-208 package per Altera/Intel ordering information. Halogen-free status not specifically called out in legacy datasheet; assume unknown. AEC-Q100 not applicable - this is a commercial-grade FPGA with no automotive qualification.
