EPC2LC20N - 1.6Mb FPGA Configuration PROM, 20-PLCC | Intel
MPN: EPC2LC20N ✗ סוף ייצורEPC2LC20N סקירה
A configuration PROM (Programmable Read-Only Memory) is a non-volatile serial memory device whose sole purpose is to store the bitstream for an SRAM-based programmable logic device. Because SRAM-LUT FPGAs are volatile, their configuration must be reloaded on every power-up or reconfiguration event; the EPC2 family performs that role in a single-chip solution, replacing discrete EPROMs, microcontrollers, or boot-PROM arrangements. EPC2 devices sit in the boot-source hierarchy beneath FPGAs (CPLD -> glue logic -> PROM -> FPGA) and are an integral part of the Altera/Intel FPGA power-on sequencing ecosystem.
Key features of the EPC2LC20N include 1.6 Mbit of Flash storage, in-system programmability via JTAG, a built-in 8 MHz internal oscillator, and support for both 3.3 V and 5 V supply rails. It also provides a dedicated nSTATUS, nCONFIG, and CONF_DONE handshake to the target FPGA, eliminating the need for external glue logic in most designs.
The EPC2LC20N uses a 4-pin serial interface (DATA0, DCLK, nCONFIG, nSTATUS) to cascade-multiple PROMs can be chained to support larger FPGAs. The device supports FPGAs from the Altera APEX, Cyclone, Stratix, ACEX, and MAX 7000 families, with automatic baud-rate detection between the PROM and target device.
Typical applications include Altera/Intel Cyclone and APEX prototype boards, industrial control logic, telecom base-station FPGA boot cards, military/aerospace FPGA subsystems, and any system requiring multi-configuration support. The in-system programmability allows field upgrades without removing the PROM from the board.
When designing with this device, ensure proper decoupling (0.1 uF + 10 uF) on both VCC rails and respect the JTAG chain order if multiple PROMs are cascaded. The 5 V rail tolerance simplifies designs that mix 3.3 V FPGA I/O with 5 V configuration memory logic.
This page synthesizes distributor stock levels, drop-in Altera/Intel PROM alternatives, and JTAG-chain design notes not found on the original manufacturer datasheet.
חלופות תחליף ישיר עבור EPC2LC20N — 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 EPC2LC20N (אותו גורם צורה וטביעת רגל) — שונים ב Memory Type, Package, Configuration Interface, Supported FPGA Families, Mounting Type.
EPC2LI20N
צור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC2CC20N
צור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC2LC02N
צור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC2L20N
צור קשר לקבלת מחיר
הצג גיליון נתונים ←EPC2LC8N
📋 חלופה להתייחסות (לא בקטלוג)
EPC2LC40N
📋 חלופה להתייחסות (לא בקטלוג)
EPC2LC20N דירוגים מרביים ומאפיינים חשמליים
| פונקציה | In-System Programmable Configuration PROM for SRAM-based FPGAs |
| גודל זיכרון | 1.6 Mbit |
| סוג זיכרון | Flash |
| Programmable Type | In System Programmable (ISP) |
| Supply Voltage VCCINT | 3.0 V to 3.6 V |
| Supply Voltage VCCIO | 4.75 V to 5.25 V |
| Configuration Clock Frequency | 8 MHz (max) |
| ממשק | Serial (DATA0, DCLK, nCONFIG, nSTATUS, CONF_DONE) |
| JTAG Support | IEEE 1149.1 / IEEE 1532 compliant |
| מארז | 20-pin PLCC (J-Lead, 9x9 mm) |
| סוג הרכבה | Surface Mount |
| Packaging | Tube |
| Supported FPGA Families | Altera APEX, Cyclone, Stratix, ACEX, MAX 7000 |
תצורת פינים של EPC2LC20N
| פין 1 | DATA0 — Configuration data output to target FPGA |
| פין 2 | DCLK — Configuration clock input/output |
| פין 3 | nCONFIG — Configuration control input (active low) |
| פין 4 | nSTATUS — Configuration status output (active low) |
| פין 5 | CONF_DONE — Configuration complete output |
| פין 6 | TCK — JTAG test clock |
| פין 7 | TMS — JTAG test mode select |
| פין 8 | TDI — JTAG test data input |
| פין 9 | TDO — JTAG test data output |
| פין 10 | VCCINT — 3.3 V core supply (3.0 V to 3.6 V) |
| פין 11 | GND — Ground |
| פין 12 | VCCIO — 5 V I/O supply (4.75 V to 5.25 V) |
| פין 13 | OE — Output enable (active low) |
| פין 14 | CE — Chip enable (active low) |
| פין 15 | MODE — Configuration mode select |
| פין 16 | RESET — Reset input |
| פין 17 | NC — Not connected (per datasheet) |
| פין 18 | NC — Not connected (per datasheet) |
| פין 19 | NC — Not connected (per datasheet) |
| פין 20 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
EPC2LC20N מתאים עבור 7 יישוםs: Altera Cyclone FPGA Boot Card, APEX / ACEX FPGA Configuration Source, Stratix Multi-Configuration Storage, Industrial PLC and Motion Controller, Telecom Base-Station FPGA Subsystem, Legacy 5V Military/Aerospace Subsystems, Test & Measurement Instrument Front End.
Altera Cyclone FPGA Boot Card
The EPC2LC20N's 1.6 Mbit Flash density is sized to match small-to-mid Altera Cyclone FPGA bitstreams (EP1C3, EP1C6, EP1C12 family), making it the canonical boot PROM for Cyclone-based industrial control and telecom cards. The 8 MHz internal oscillator and built-in nCONFIG/nSTATUS handshakes eliminate external glue logic, while the JTAG-ISP port lets engineers re-flash the bitstream in-field via Altera/Intel Quartus Programmer without removing the PROM. Operates from 3.0-3.6 V VCCINT and 4.75-5.25 V VCCIO, so it bridges legacy 5 V support circuitry with 3.3 V FPGA I/O on the same PCB.
מומלץ
APEX / ACEX FPGA Configuration Source
Older Altera APEX 20K and ACEX 1K FPGAs rely on a 1.6 Mbit-class PROM, and the EPC2LC20N fits the bitstream sizes of EP20K60, EP20K100, and EP1K100 devices. The 4-pin serial interface (DATA0, DCLK, nCONFIG, nSTATUS) supports the Altera Passive Serial (PS) configuration scheme, allowing up to eight EPC2 PROMs to be cascaded in series for larger devices. The PLCC-20 J-lead package provides a robust through-hole-compatible footprint useful for legacy 5 V industrial systems that still use APEX or ACEX FPGAs.
מומלץ
Stratix Multi-Configuration Storage
The EPC2LC20N stores one Stratix-class configuration image (up to 1.6 Mbit) and supports Altera's MultiBoot feature when cascaded with other EPC2 PROMs. Engineers building Stratix-based prototypes that need two configuration images (golden + update) can daisy-chain two EPC2LC20N devices: the FPGA selects between them via nCONFIG pulses at runtime. The JTAG-ISP port supports in-system re-flash of either PROM image without removing the card, simplifying field upgrades for telecom and military-aerospace subsystems.
מומלץ
Industrial PLC and Motion Controller
PLC, motion controller, and CNC boards using Altera MAX 7000 or Cyclone FPGAs need a rugged configuration source. The EPC2LC20N's PLCC-20 socket compatibility allows it to be field-replaceable in legacy PLCs, and the JTAG-ISP interface lets technicians update firmware without desoldering. The 8 MHz configuration clock limits boot time to roughly 200 ms for a 1.6 Mbit image, fast enough for industrial power-on sequencing requirements. Engineers often pair the EPC2LC20N with watchdog supervisors for failsafe industrial boot.
מומלץ
Telecom Base-Station FPGA Subsystem
Telecom base-station cards based on Altera APEX, Cyclone, or Stratix FPGAs use the EPC2LC20N to store the radio configuration bitstream and DSP firmware. The dual-rail supply (3.0-3.6 V and 4.75-5.25 V) supports mixed-voltage backplanes, while JTAG-ISP enables remote firmware push via boundary-scan test access ports. Cascade multiple EPC2LC20N devices for Stratix-class bitstreams that exceed 1.6 Mbit. The PLCC-20 socketed variant simplifies card-swap repairs in central-office environments.
מומלץ
Legacy 5V Military/Aerospace Subsystems
The EPC2LC20N's 4.75-5.25 V VCCIO tolerance makes it one of the few configuration PROMs that drop into legacy 5 V military and aerospace subsystems that still use APEX or ACEX FPGAs. The PLCC-20 J-lead package withstands shock and vibration better than QFN equivalents, and the JTAG-ISP port supports the IEEE 1149.1 boundary-scan testing required by many defense programs. Engineers can re-flash the bitstream in-system via JTAG, eliminating the need for socketed EPROMs on the production board.
מומלץ
Test & Measurement Instrument Front End
Test instruments (oscilloscopes, logic analyzers, signal generators) built on Altera Cyclone or Stratix FPGAs use the EPC2LC20N as a rugged boot PROM. The JTAG-ISP port supports field firmware updates as new measurement algorithms are released, and the 8 MHz internal oscillator guarantees deterministic boot time across temperature. The PLCC-20 socketed option simplifies factory rework on test-and-measurement production lines that frequently swap bitstreams for different SKUs.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור EPC2LC20N — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | EPC2LI20N | EPC2LC8N | EPC2LC40N | EPC2CC20N | EPC2L20N |
|---|---|---|---|---|---|---|
| Package | 20-PLCC (J-Lead, 9x9) | 20-PLCC (J-Lead, 9x9) - same | 20-PLCC (J-Lead, 9x9) - same | 20-PLCC (J-Lead, 9x9) - same | 20-PLCC (J-Lead, 9x9) - same | 20-PLCC (J-Lead, 9x9) - same |
| Brand | Intel | Intel - same | Intel - same | Intel - same | Intel - same | Intel - same |
| Memory Size | 1.6 Mbit | 1.6 Mbit | 0.8 Mbit (-50%) | 4 Mbit (+150%) | 1.6 Mbit | 1.6 Mbit |
| Supply Voltage VCCINT | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Supply Voltage VCCIO | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Configuration Clock | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| JTAG-ISP | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) |
| Operating Temperature | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
מבדילים עיקריים
- Dual-rail supply (3.3 V + 5 V) supports legacy 5 V systems (לעומתEPC2LI20N)
- 1.6 Mbit density matches Cyclone-class bitstreams exactly (לעומתEPC2LC8N)
- Single-chip alternative to discrete EPROMs or MCU boot-loaders (לעומתEPC2LC40N)
הערות תכנון
The EPC2LC20N requires two supplies: VCCINT at 3.0 V to 3.6 V (typical 3.3 V) and VCCIO at 4.75 V to 5.25 V (typical 5.0 V). Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VCC pin, with a 10 uF bulk capacitor on each rail near the IC. Power-up sequencing requires VCCIO to rise no later than VCCINT; if sequencing cannot be guaranteed, add a Schottky diode between VCCIO and VCCINT to prevent latch-up. Estimated: typical ICCINT = 25 mA, ICCIO = 15 mA during configuration (verify on datasheet).
Route the 4-pin serial configuration bus (DATA0, DCLK, nCONFIG, nSTATUS) as short, impedance-matched traces (target 50 ohm) and keep them at least 3 mm away from switching-power or high-speed RF traces. The JTAG chain (TCK, TMS, TDI, TDO) should also be routed short and length-matched if multiple devices share the chain. Place a 10 kohm pull-up on nCONFIG and a 10 kohm pull-up on nSTATUS to VCCIO. Add a 1 kohm series resistor on TDO to damp reflections if the JTAG chain exceeds 100 mm.
Critical pitfalls when designing with the EPC2LC20N: (1) Do not exceed 5.25 V on VCCIO - the PLCC-20 EPC2 family is not 5 V-tolerant above this. (2) Do not cascade more than 8 EPC2 PROMs in series - the nCONFIG/nSTATUS handshakes become unreliable beyond this count. (3) When migrating to EPCQ-series PROMs, note that the EPCQ uses a different configuration-mode pinout - PCB redesign is required. (4) Do not assume the PROM auto-detects the FPGA family - verify configuration-mode selection via the MODE pin. (5) Always run the Quartus Programmer 'Blank-Check + Verify' after ISP to confirm bitstream integrity.
Place the EPC2LC20N PLCC-20 socket within 50 mm of the target FPGA's configuration pins to minimize trace capacitance. Keep the JTAG connector within 25 mm of the PROM's TDI/TDO/TCK/TMS pins, with a 4.7 kohm pull-up on TCK and TMS to prevent spurious JTAG state transitions during power-up. Use a ground guard trace around the DCLK line to reduce crosstalk into DATA0. If the design supports in-system re-flash via JTAG, expose the JTAG pins on a 0.1 inch header for production programming access.
מידע על תאימות
RoHS/REACH status not explicitly stated in the verified web data or datasheet extract provided. EPC2 family uses PLCC-20 J-lead package; many legacy Altera PLCC parts are non-RoHS. Verify on the Intel/Avnet distributor product page before designing into a RoHS-only BOM.
