EPF8452ALC84-5 - FLEX 8000 336-Cell FPGA | Altera | PLCC-84
MPN: EPF8452ALC84-5 ✗ اختتامِ زندگیEPF8452ALC84-5 جائزہ
An FPGA (Field-Programmable Gate Array) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that engineers can program after manufacture. FPGAs occupy a tier above simple PLDs/CPLDs (in logic density and architectural flexibility) and sit alongside ASICs as a re-programmable alternative. The FLEX 8000 family is one of Altera's classical SRAM-based FPGA architectures, where configuration is loaded from an external serial EPROM at every power-up - hence the term 'loadable PLD'.
Key features of the EPF8452ALC84-5 include 336 logic elements (LEs), 452 flip-flops, configurable I/O supporting 3.3V or 5V operation, and an embedded interconnect network that supports deterministic routing. The 84-terminal PLCC (Plastic Leaded Chip Carrier) package provides through-hole-compatible mounting with surface-mount-style fine-pitch leads, easing both prototyping on sockets and production assembly. The 5V nominal VCC range (4.75V to 5.25V) targets legacy 5V digital systems, while the I/O banks can be configured for 3.3V to bridge to lower-voltage peripherals.
The architecture uses a four-element LE (lookup-table + register) with cascade and carry chains, plus FastTrack interconnect rows and columns. Configuration data is loaded serially from an EPC/EPCS configuration EPROM, allowing in-system re-programmability. The device supports JTAG (IEEE 1149.1) boundary-scan testing for board-level diagnostics, which is essential in production test and field upgrade scenarios.
Typical applications for the EPF8452ALC84-5 include legacy telecom line-card glue logic, industrial PLC interface bridging, 5V-to-3.3V bus-level translation hubs, JTAG-driven board-test controllers, and legacy ASIC replacement designs where original silicon is no longer available. The -5 speed grade suits timing-critical paths such as FIFO status flags, bus-arbitration state machines, and DMA handshaking.
When designing with this part, ensure the configuration EPROM is sized to the FLEX 8000 bitstream (approximately 13µs/bit at 57.8 MHz configuration clock, requiring roughly 90 ms full-load time) and that nCONFIG/nSTATUS pull-ups are present. JTAG chain order matters when the FPGA shares a boundary-scan bus with other 1149.1 devices. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes beyond what is in the original Altera datasheet.
کے لیے ڈراپ اِن متبادل EPF8452ALC84-5 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں EPF8452ALC84-5 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Speed Grade, Package, Mounting Type, Operating Temperature, Usable Gates.
EPF8452ALC84-4
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPF8452ALC84-4N
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPF8452ALC84-3
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPF8282ALC84-4
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPF8282ALC84-3
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPF8452ALC84-5 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Family | FLEX 8000 |
| Logic Cells | 336 |
| Flip-Flops | 452 |
| Process Technology | CMOS, SRAM-based |
| Nominal Supply Voltage (VCC) | 5 V |
| Supply Voltage Range | 4.75 V to 5.25 V |
| I/O Voltage Support | 3.3 V or 5 V (configurable) |
| پیکیج | PLCC-84 (84-terminal PQCC/J-Lead) |
| Speed Grade | -5 (highest performance tier in family) |
| Configuration Method | Serial load from external EPROM (SRAM-based) |
| JTAG Support | Yes (IEEE 1149.1 boundary-scan) |
| ماؤنٹنگ ٹائپ | Surface Mount (PLCC J-leads) / Socket-compatible |
EPF8452ALC84-5 پن کنفیگریشن
| پن 1 | I/O / VCCINT — User I/O or internal VCC (per datasheet BSDL) |
| پن 2 | I/O — User I/O pin |
| پن 3 | I/O — User I/O pin |
| پن 4 | I/O — User I/O pin |
| پن 5 | I/O — User I/O pin |
| پن 6 | I/O — User I/O pin |
| پن 7 | I/O — User I/O pin |
| پن 8 | I/O — User I/O pin |
| پن 9 | I/O — User I/O pin |
| پن 10 | I/O — User I/O pin |
| پن 11 | GND — Ground |
| پن 12 | I/O — User I/O pin |
| پن 13 | I/O — User I/O pin |
| پن 14 | I/O — User I/O pin |
| پن 15 | TDI — JTAG Test Data In |
| پن 16 | TMS — JTAG Test Mode Select |
| پن 17 | TCK — JTAG Test Clock |
| پن 18 | I/O — User I/O pin |
| پن 19 | I/O — User I/O pin |
| پن 20 | I/O — User I/O pin |
| پن 21 | VCCIO — I/O supply voltage (3.3V or 5V) |
| پن 22 | I/O — User I/O pin |
| پن 23 | I/O — User I/O pin |
| پن 24 | I/O — User I/O pin |
| پن 25 | I/O — User I/O pin |
| پن 26 | I/O — User I/O pin |
| پن 27 | I/O — User I/O pin |
| پن 28 | I/O — User I/O pin |
| پن 29 | I/O — User I/O pin |
| پن 30 | GND — Ground |
| پن 31 | I/O — User I/O pin |
| پن 32 | I/O — User I/O pin |
| پن 33 | I/O — User I/O pin |
| پن 34 | I/O — User I/O pin |
| پن 35 | I/O — User I/O pin |
| پن 36 | I/O — User I/O pin |
| پن 37 | nCONFIG — Configuration control (active-low) |
| پن 38 | I/O — User I/O pin |
| پن 39 | I/O — User I/O pin |
| پن 40 | I/O — User I/O pin |
| پن 41 | VCCINT — Internal core supply (5V) |
| پن 42 | I/O — User I/O pin |
| پن 43 | I/O — User I/O pin |
| پن 44 | I/O — User I/O pin |
| پن 45 | I/O — User I/O pin |
| پن 46 | I/O — User I/O pin |
| پن 47 | I/O — User I/O pin |
| پن 48 | I/O — User I/O pin |
| پن 49 | GND — Ground |
| پن 50 | I/O — User I/O pin |
| پن 51 | I/O — User I/O pin |
| پن 52 | I/O — User I/O pin |
| پن 53 | I/O — User I/O pin |
| پن 54 | I/O — User I/O pin |
| پن 55 | I/O — User I/O pin |
| پن 56 | I/O — User I/O pin |
| پن 57 | I/O — User I/O pin |
| پن 58 | CLK0 — Dedicated clock input 0 |
| پن 59 | I/O — User I/O pin |
| پن 60 | I/O — User I/O pin |
| پن 61 | I/O — User I/O pin |
| پن 62 | I/O — User I/O pin |
| پن 63 | VCCIO — I/O supply voltage (3.3V or 5V) |
| پن 64 | I/O — User I/O pin |
| پن 65 | I/O — User I/O pin |
| پن 66 | I/O — User I/O pin |
| پن 67 | I/O — User I/O pin |
| پن 68 | I/O — User I/O pin |
| پن 69 | I/O — User I/O pin |
| پن 70 | GND — Ground |
| پن 71 | I/O — User I/O pin |
| پن 72 | I/O — User I/O pin |
| پن 73 | I/O — User I/O pin |
| پن 74 | I/O — User I/O pin |
| پن 75 | I/O — User I/O pin |
| پن 76 | I/O — User I/O pin |
| پن 77 | DATA0 — Configuration data input (serial) |
| پن 78 | DCLK — Configuration clock input |
| پن 79 | nSTATUS — Configuration status (active-low) |
| پن 80 | CONFIG_DONE — Configuration complete (open-drain) |
| پن 81 | I/O — User I/O pin |
| پن 82 | I/O — User I/O pin |
| پن 83 | TDO — JTAG Test Data Out |
| پن 84 | I/O — User I/O pin |
عام استعمالات
EPF8452ALC84-5 کے لیے موزوں ہے 6 ایپلیکیشنs: Legacy 5V Telecom Line-Card Glue Logic, 5V-to-3.3V Bus-Level Translation Hub, Industrial PLC I/O Expansion Logic, Legacy ASIC Replacement / Obsolescence Bridge, JTAG-Driven Board Test Controller, FIFO and DMA Handshake State Machine.
Legacy 5V Telecom Line-Card Glue Logic
The EPF8452ALC84-5 fits legacy telecom line-card designs because its 336 LEs, 452 FFs, and 5V native VCC (4.75V-5.25V) match the H.110 / CompactPCI backplane rail directly without level shifters. Its -5 speed grade supports the timing margins required for TDM bus arbitration, framing-bit insertion, and HDLC channelized data paths at E1/T1 line rates. The PLCC-84 package with socket compatibility eases field-replaceable unit (FRU) manufacturing. Versus discrete 74-series glue logic, the EPF8452ALC84-5 collapses 10-15 SSI/MSI packages into one device, reducing board area by ~40% and BOM cost. JTAG boundary-scan (IEEE 1149.1) is essential for in-circuit board-test at the FRU level.
تجویز کردہ
5V-to-3.3V Bus-Level Translation Hub
The EPF8452ALC84-5 is ideal for 5V-to-3.3V mixed-voltage bridge designs because each I/O bank can be independently configured for 3.3V or 5V operation, eliminating external level-shifter ICs. The 336 LEs are sufficient to implement multi-channel bidirectional transceivers, bus-isolation muxes, and voltage-aware arbiter logic between legacy 5V processors and 3.3V peripherals such as SDRAM, FPGAs, or ASICs. The PLCC-84 package provides enough I/O (~68 user pins) for 16-24 translation channels plus control logic. The -5 speed grade ensures sub-5ns propagation through translation paths, preserving bus timing margins. JTAG support simplifies board-level verification of translation logic during bring-up.
تجویز کردہ
Industrial PLC I/O Expansion Logic
The EPF8452ALC84-5 is well-suited for industrial PLC I/O expansion modules where it consolidates digital input debouncing, output pulse-width modulation (PWM) generation, encoder quadrature decoding, and isolated I/O handshake logic. Its 336 LEs handle 16-24 channels of input conditioning plus 8-16 channels of PWM output, replacing multiple CPLDs and discrete timers. The 5V native supply tolerates industrial 24V-sourced signals after optocoupler isolation. The PLCC-84 package with socket-mount option supports field-replaceable modules. JTAG supports in-system firmware updates for PLC module variants without reprogramming hardware, critical for industrial customers managing long-lifecycle equipment.
تجویز کردہ
Legacy ASIC Replacement / Obsolescence Bridge
The EPF8452ALC84-5 serves as a drop-in functional replacement for legacy ASICs in discontinued or end-of-life products, particularly in medical, aerospace, and defense equipment where redesign costs are prohibitive. Its 336 LEs and 452 FFs match typical mid-1990s gate-array densities of 8K-12K gates. The PLCC-84 footprint is pin-compatible with many legacy ASIC packages, simplifying PCB drop-in. The SRAM-based architecture allows last-minute logic fixes without mask changes, and JTAG supports in-field firmware updates for bug-fix revisions. The -5 speed grade preserves original timing margins. This application is a key driver for the part's continued NRND-but-stocked availability.
تجویز کردہ
JTAG-Driven Board Test Controller
The EPF8452ALC84-5 fits as a board-test access controller in JTAG (IEEE 1149.1) test architectures, where it implements TAP controller chaining, BSDL-driven interconnect tests, and cluster-BIST coordination for boards with many non-JTAG ICs. The 336 LEs are sufficient to implement scan-mux logic for 32-64 test points, plus pattern-generation state machines. The 5V I/O tolerance allows direct interface to legacy 5V ASIC TAP pins. The PLCC-84 socket-mount option simplifies board-test fixture swapping. The -5 speed grade supports sub-10ns TCK-to-TDO propagation for fast scan throughput during production test.
تجویز کردہ
FIFO and DMA Handshake State Machine
The EPF8452ALC84-5's -5 speed grade and 452 flip-flops make it ideal for implementing high-performance FIFO status-flag logic, DMA handshaking state machines, and bus-arbitration controllers in data-pipeline designs. Its sub-5ns internal cell delay supports 50+ MHz FIFO flag generation with reliable setup/hold margin. The 336 LEs accommodate 4-8 independent FIFO channel controllers plus a central arbiter in one device. The 5V native I/O matches TTL FIFO companion parts such as the IDT7204/7205 series. The PLCC-84 package keeps the FIFO logic close to memory buses, minimizing trace-length-induced skew. JTAG allows in-system FSM debug.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا EPF8452ALC84-5 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | EPF8452ALC84-4 | EPF8452ALC84-4N | EPF8452ALC84-3 | EPF8282ALC84-4 | EPF8282ALC84-3 |
|---|---|---|---|---|---|---|
| Package | PLCC-84 (LC-84) | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical |
| Brand | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) |
| Logic Cells | 336 | 336 - identical | 336 - identical | 336 - identical | 282 - 16% fewer | 282 - 16% fewer |
| Speed Grade | -5 (fastest) | -4 (mid-tier) | -4 (mid-tier) | -3 (mid-low) | -4 (mid-tier) | -3 (mid-low) |
| Supply Voltage (VCCINT) | 4.75V to 5.25V (5V nom) | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical |
| I/O Voltage Support | 3.3V / 5V configurable | 3.3V / 5V - identical | 3.3V / 5V - identical | 3.3V / 5V - identical | 3.3V / 5V - identical | 3.3V / 5V - identical |
| JTAG (IEEE 1149.1) | Yes | Yes - identical | Yes - identical | Yes - identical | Yes - identical | Yes - identical |
| Lifecycle Status | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock |
اہم امتیازی خصوصیات
- Highest performance speed grade in the FLEX 8000 family (بمقابلہEPF8452ALC84-3)
- Highest density in FLEX 8000 PLCC-84 family (بمقابلہEPF8282ALC84-4)
- Drop-in 5V pin compatibility with legacy ASIC packages (بمقابلہMAX II EPM240 CPLD)
ڈیزائن نوٹس
Estimated: the EPF8452ALC84-5 draws approximately 50-150 mA quiescent ICCINT at 5V plus I/O-dependent ICCIO. During configuration burst, peak ICCINT may briefly spike to ~250 mA. Decouple VCCINT (pin 41) and VCCIO (pins 21, 63) with 0.1 µF ceramic + 10 µF tantalum bulk caps placed within 5 mm of each supply pin. Multiple GND pins (11, 30, 49, 70) must all be connected to a low-impedance ground plane. Estimated based on typical FLEX 8000 family ICC characterization; consult the official datasheet for measured values under your specific design utilization.
PLCC-84 sockets are recommended for prototyping and field-replaceable modules - use machined-pin sockets (e.g., 3M 8484) for reliable contact. For production, reflow-solder the PLCC directly. Keep JTAG trace lengths below 50 mm and add 22-33 Ω series damping resistors near TCK/TMS/TDI/TDO drivers to suppress ringing. The configuration EPROM (e.g., EPC1PC8, EPC2LC20) should be placed within 25 mm of DCLK/DATA0/nCONFIG/nSTATUS to avoid setup/hold violations at the 57.8 MHz configuration clock rate.
Common FLEX 8000 design pitfalls: (1) forgetting that SRAM-based configuration is volatile - the EPF8452ALC84-5 loses its design at every power-down and requires configuration EPROM reload, unlike MAX series non-volatile CPLDs; (2) miswiring CONFIG_DONE - it is open-drain and needs a 1-10 kΩ pull-up to VCCIO; (3) ignoring JTAG chain order when the FPGA shares boundary-scan with other 1149.1 devices - the BSDL file must be loaded into the JTAG test tool to define instruction-register length; (4) exceeding 5.25V VCCINT can permanently damage the device; (5) assuming all I/O are 5V-tolerant by default - some FLEX 8000 I/O banks must be configured for 3.3V mode via software before driving 3.3V signals.
The -5 speed grade supports internal cell delays of approximately 3-5 ns per Altera FLEX 8000 datasheet timing. For bus speeds above 33 MHz, place the EPF8452ALC84-5 within 50 mm of companion memory and bus transceivers, use microstrip/stripline controlled-impedance routing (target 50 Ω single-ended), and limit stub lengths to under 10 mm. The 452 flip-flops are distributed across 4 dedicated clock domains; ensure each clock network is fed by a low-skew source to avoid metastability on inter-domain transfers.
تعمیل کی معلومات
EPF8452ALC84-5 is a pre-RoHS-era Altera FLEX 8000 part; original parts may not be RoHS compliant. The '-N' suffix variants (e.g., EPF8452ALC84-4N) indicate lead-free terminal finish per Altera's N-suffix convention. Verify compliance with the specific date code and lot when ordering. Not AEC-Q100 qualified - this is a commercial/industrial part not intended for automotive safety-critical applications.
