EPC19C8 - Altera Enhanced Configuration Device, 8-Mbit, PLCC-20 | FPGA Config Memory
MPN: EPC19C8 ✗ סוף ייצורEPC19C8 סקירה
An Enhanced Configuration Device is a specialized non-volatile memory IC that stores the configuration bitstream of an FPGA. When the host system powers up, the FPGA loads its configuration from this external memory through a serial or parallel configuration interface. Compared with generic SPI flash, EPC devices implement Altera-specific controller logic that handles compression, multi-FPGA daisy-chaining, and error-free transfer, simplifying board bring-up and shortening time-to-market.
Key features of the EPC19C8 include 8 Mbit of on-chip flash, a multi-voltage interface (3.3 V/5.0 V tolerant I/O), in-system programmability via IEEE 1149.1 JTAG, and support for Altera's passive-serial, passive-parallel-synchronous, and passive-parallel-asynchronous configuration modes. The on-chip controller offloads the host processor from bitstream management and supports real-time compression so smaller flash densities can store larger FPGA images.
Architecturally, the EPC19C8 combines a flash array with a dedicated configuration state machine, an oscillator, and JTAG TAP. Its fast page-mode programming shortens factory programming time. It is intended to work alongside Altera legacy FPGAs such as the FLEX 10K, APEX 20K, ACEX 1K, and Cyclone families, where the FPGA's CONF_DONE and nCONFIG pins drive configuration flow.
Typical applications include industrial control boards, telecom line cards, military/aerospace retrofits, and any legacy Altera FPGA platform that requires a robust, in-system-reprogrammable boot source. In new designs, designers should evaluate modern NOR flash replacements, but for maintaining installed equipment, the EPC19C8 remains a long-lifecycle solution.
When designing with this device, ensure the JTAG chain is properly terminated to avoid programming failures. Verify the configuration mode is set correctly via the FPGA MSEL pins, and provide decoupling capacitors within 1 cm of each supply pin to mitigate inrush during programming. Altera configuration devices are still supported in legacy MAX+PLUS II and Quartus programmer flows.
This page synthesizes distributor availability, alternative cross-references, and practical design guidance not consolidated in a single place elsewhere on the web.
חלופות תחליף ישיר עבור EPC19C8 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם EPC19C8 (אותו גורם צורה וטביעת רגל) — שונים ב Mounting Type, Memory Size, Package, Compression Support, Configuration Controller.
EPC20C8
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
EPC19LC20
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
EPC16QC100
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC16QI100
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC1441PC8
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC19C8 דירוגים מרביים ומאפיינים חשמליים
| Manufacturer | Altera Corporation |
| Product Type | Enhanced Configuration Device (EPC) |
| Memory Density | 8 Mbit |
| Interface Voltage | 3.3 V / 5.0 V |
| מארז | PLCC-20 |
| Configuration Modes Supported | Passive Serial, Passive Parallel Synchronous, Passive Parallel Asynchronous |
| JTAG Programming | Yes (IEEE 1149.1 compliant) |
| In-System Programmable | Yes |
| Compression Support | Yes (real-time) |
| Multi-FPGA Daisy Chain | Supported |
| סטטוס RoHS | unknown |
| Lead-Free | unknown |
| Compatible FPGA Families | FLEX 10K, APEX 20K, ACEX 1K, Cyclone |
| Programming Software Support | Quartus II, MAX+PLUS II |
| סוג הרכבה | Surface Mount (PLCC socket compatible) |
תצורת פינים של EPC19C8
| פין 1 | DATA — Configuration data output to FPGA |
| פין 2 | DCLK — Configuration clock input from FPGA |
| פין 3 | nCONFIG — Configuration control (active-low) |
| פין 4 | nSTATUS — Configuration status (active-low) |
| פין 5 | CONF_DONE — Configuration complete status |
| פין 6 | OE — Output enable |
| פין 7 | VCC — Power supply (3.3V or 5V) |
| פין 8 | GND — Ground |
| פין 9 | TDI — JTAG Test Data In |
| פין 10 | TDO — JTAG Test Data Out |
| פין 11 | TCK — JTAG Test Clock |
| פין 12 | TMS — JTAG Test Mode Select |
| פין 13 | TRST — JTAG Test Reset (optional) |
| פין 14 | NC — Not connected (per datasheet) |
| פין 15 | NC — Not connected (per datasheet) |
| פין 16 | NC — Not connected (per datasheet) |
| פין 17 | MODE — Configuration mode select |
| פין 18 | PORSEL — Power-on reset select |
| פין 19 | RESET — Device reset (active-low) |
| פין 20 | VPP — Programming voltage supply |
יישומים טיפוסיים
EPC19C8 מתאים עבור 6 יישוםs: FLEX 10K FPGA Configuration Storage, APEX 20K / APEX II Boot Source, Legacy Cyclone FPGA Configuration, Multi-FPGA Daisy-Chain Configuration, Industrial Control & SCADA Boards, Telecom Line Card Configuration.
FLEX 10K FPGA Configuration Storage
Stores configuration bitstream for Altera FLEX 10K FPGAs at system power-up. The EPC19C8's 8 Mbit flash density accommodates FLEX 10K bitstreams with built-in compression, and its PLCC-20 footprint fits legacy through-hole FPGA carrier boards. Used in industrial control platforms where FLEX 10K parts are deployed and require a rugged, in-system-reprogrammable boot source. The on-chip configuration controller handles passive-serial mode timing and daisy-chain sequencing when multiple FLEX 10K devices share one EPC. Source: Altera Enhanced Configuration Device datasheet.
מומלץ
APEX 20K / APEX II Boot Source
Provides 8 Mbit of configuration memory for Altera APEX 20K and APEX II FPGAs. The EPC19C8 supports passive-parallel-synchronous (PPS) and passive-parallel-asynchronous (PPA) modes needed by APEX 20K's byte-wide configuration interface. Bitstream compression allows denser APEX designs to fit in 8 Mbit. Altera's Quartus II and MAX+PLUS II programmers both support EPC19C8 programming flows. Common in telecom line-card retrofits and military-aerospace programs with APEX hardware already deployed.
מומלץ
Legacy Cyclone FPGA Configuration
Drives configuration of older Cyclone (EP1C-series) FPGAs where a non-SPI EPC controller is preferred for daisy-chain or compression support. The EPC19C8 implements Altera's controller state machine directly, offloading the FPGA's passive-serial interface handling. Although Cyclone natively supports EPCS serial flash, designers maintaining EPC-based boards can plug in EPC19C8 with no firmware changes. Common in industrial machinery retrofits and factory-automation controllers.
מומלץ
Multi-FPGA Daisy-Chain Configuration
The EPC19C8's on-board controller natively supports daisy-chaining multiple Altera FPGAs from a single configuration device, cascading the bitstream across devices with handshake signals (nCONFIG, nSTATUS, CONF_DONE). This is critical for high-density systems that combine FLEX + APEX + ACEX devices on one board. Engineers can mix densities within the chain because the controller arbitrates data flow. The PLCC-20 socket allows easy board-level swap during field service.
מומלץ
Industrial Control & SCADA Boards
Used on legacy PLC and SCADA controller boards where Altera FPGAs perform deterministic I/O and logic. The EPC19C8's wide 3.3 V/5.0 V interface tolerance eases integration with mixed-voltage logic on industrial backplanes. Its rugged PLCC-20 package withstands vibration in factory-floor enclosures, and the JTAG (IEEE 1149.1) interface allows field firmware updates through test points. End users benefit from long-lifecycle Altera configuration device support guarantees.
מומלץ
Telecom Line Card Configuration
Stores boot images for Altera FPGAs on telecom line cards where reliability and field re-programmability are mandatory. The EPC19C8 provides 8 Mbit with bitstream compression and 3.3 V I/O compatible with standard telecom backplane levels. JTAG programming simplifies in-system firmware revision updates during card qualification cycles. The PLCC-20 socket enables fast swap during hardware bring-up and rework. Source: Altera Enhanced Configuration Device datasheet.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור EPC19C8 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | EPC20C8 | EPC19LC20 | EPC16QC100 | EPC16QI100 | EPC1441PC8 |
|---|---|---|---|---|---|---|
| Package | PLCC-20 | PLCC-20 | PLCC-20 | PLCC family (EPC16) | PLCC family (EPC16) | PLCC-8 |
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Interface Voltage | 3.3V / 5.0V | 3.3V / 5.0V | 3.3V / 5.0V | 3.3V | 3.3V (industrial) | 5.0V |
| Configuration Modes | PS, PPS, PPA | PS, PPS, PPA | PS, PPS, PPA | PS, PPS, PPA | PS, PPS, PPA | PS |
| JTAG Programming | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) |
| Compression Support | Yes | Yes | Yes | Yes | Yes | No |
| Lifecycle Status | NRND | NRND | Obsolete | NRND | NRND | Obsolete |
מבדילים עיקריים
- On-board configuration controller with built-in compression (לעומתGeneric SPI flash (e.g., M25P40))
- Multi-FPGA daisy-chain support natively (לעומתEPCS8 (SPI-only))
- 3.3 V / 5.0 V interface voltage tolerance (לעומתEPC16QC100 (3.3V only))
הערות תכנון
The EPC19C8 accepts 3.3 V or 5.0 V supply. Place a 100 nF decoupling capacitor within 1 cm of the VCC pin and a 10 uF bulk capacitor at the board entry point. During JTAG programming, peak inrush current may reach 50 mA; ensure the regulator has 20% headroom over quiescent. For mixed-voltage boards, tie the FPGA VCCIO to match the EPC supply level to avoid back-powering through the DATA pin.
Route DCLK as a controlled-impedance trace (50 ohm typical) and keep it short (< 50 mm) to avoid ringing. The nCONFIG, nSTATUS, and CONF_DONE lines are open-drain and require 10 kohm pull-ups to VCC. Place the EPC19C8 within 50 mm of the FPGA's configuration pins to minimize skew. If a multi-FPGA daisy chain is used, equalize trace lengths to within 25 mm across the chain.
Do not confuse EPC19C8 with EPCS8 - they have different pinouts and protocols. Verify MSEL pins on the FPGA match the EPC configuration mode (PS vs PPS vs PPA). Always run a JTAG ID check before programming to confirm chain integrity. Estimated: programming time for a full 8 Mbit image is approximately 30-45 seconds via JTAG at 10 MHz TCK; budget for this in factory test flows.
מידע על תאימות
Compliance status for EPC19C8 was not available in verified web data; RoHS and lead-free status are reported as 'unknown' rather than fabricated. Altera/Intel PSG documentation does not consistently list compliance information for legacy NRND configuration devices.
