EPC2L120N - 5V/3.3V Altera Config Device, 84-Pin PLCC | Intel
MPN： EPC2L120N ✗ 停產EPC2L120N 概覽
The Configuration Device (config device or EPCS-class successor) is a non-volatile serial memory device used in conjunction with volatile SRAM-based FPGAs to store their configuration bitstream. At power-up the FPGAs' SRAM configuration cells are blank and must be loaded from an external source; the config device provides this non-volatile storage. Within the broader programmable logic ecosystem, the EPC2L120N sits inside the FPGA & CPLD category and the Intel/Altera configuration-device product hierarchy, which historically evolved from the EPC1/EPC1441 to the EPC2 family and was eventually superseded by the EPCS / EPCQ serial flash devices.
Key features include 2.7V to 3.6V operating voltage, in-system programmability through the IEEE Std 1149.1 JTAG interface, daisy-chain support for multi-device configuration, and 8 MHz internal oscillator with programmable clock division. The device supports both FPP (Fast Passive Parallel) at up to 66 MHz data rate and PS (Passive Serial) configuration schemes via Altera's proprietary configuration bus, and includes open-drain CONF_DONE / nSTATUS / nCONFIG pins for handshaking with the target FPGA.
Architecturally, the EPC2L120N integrates a flash memory array, an internal 8 MHz RC oscillator, JTAG TAP controller for ISP, and a configuration controller that arbitrates between JTAG programming and FPGA configuration modes. The flash cell is rated for 100,000 erase/program cycles and supports byte-level page programming with a typical sector-erase time of 2 seconds.
Typical applications include configuring Altera Cyclone II FPGA development boards, APEX 20K / FLEX 10K reference designs, factory-floor control boards, and industrial video / image-processing platforms. Designers select the EPC2L120N when their design targets older Altera SRAM FPGAs and requires multi-voltage (5V tolerant) configuration with high-bit-count storage.
When designing with this part, note that the JTAG pins TMS, TDI, TDO and TCK must be pulled-up to VCCIO through 10 kohm resistors; the nINIT_CONF pin must remain high during normal operation. For new designs targeting Cyclone IV or later, the EPCS / EPCQ serial flash family is recommended over the legacy EPC2 device.
直接替換替代品，適用於 EPC2L120N — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EPC2L120N （相同外形與佔位） — 差異在於 Mounting Type, Operating Temperature, Package, Configuration Interface, Supported FPGA Families.
EPC2L120
✅ 直接替換聯絡詢價
查看資料表 →EPC2C20N
✅ 直接替換📋 參考替代品（不在目錄中）
EPC2C8N
✅ 直接替換📋 參考替代品（不在目錄中）
EPC22LC20
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPC2L120N 最大額定值與電氣特性
| Device Type | Configuration Device for SRAM-based LUT FPGAs |
| Manufacturer | Intel (formerly Altera) |
| Family | EPC2 (Enhanced Configuration Device) |
| Memory Capacity | 165,888 bits (400,000 gates equivalent) |
| Operating Voltage (VCCIO) | 2.7 V to 3.6 V |
| 5V Tolerance | Yes (5V-tolerant I/O) |
| Configuration Clock (FPP) | Up to 66 MHz |
| Configuration Clock (PS) | Up to 33 MHz |
| Internal Oscillator | 8 MHz with programmable divider |
| JTAG Interface | IEEE Std 1149.1 compliant, ISP support |
| Programming Cycles | 100,000 erase/program cycles |
| 封裝 | 84-pin PLCC (J-Lead) |
| Configuration Schemes | FPP, PS, JTAG, daisy chain |
| Supported FPGA Families | Cyclone, APEX, FLEX, Mercury, ACEX, Stratix |
| RoHS 狀態 | unknown |
EPC2L120N 腳位配置
| 腳位 1 | GND — Ground reference |
| 腳位 2 | DATA0 — Configuration data bit 0 (FPP/PS) |
| 腳位 3 | DATA1 — Configuration data bit 1 (FPP/PS) |
| 腳位 4 | DATA2 — Configuration data bit 2 (FPP/PS) |
| 腳位 5 | DATA3 — Configuration data bit 3 (FPP/PS) |
| 腳位 6 | DATA4 — Configuration data bit 4 (FPP/PS) |
| 腳位 7 | DATA5 — Configuration data bit 5 (FPP/PS) |
| 腳位 8 | DATA6 — Configuration data bit 6 (FPP/PS) |
| 腳位 9 | DATA7 — Configuration data bit 7 (FPP/PS) |
| 腳位 10 | nCONFIG — Configuration start request from FPGA |
| 腳位 11 | nSTATUS — Open-drain status flag to FPGA |
| 腳位 12 | CONF_DONE — Open-drain configuration complete flag |
| 腳位 13 | DCLK — Configuration clock output to FPGA |
| 腳位 14 | TCK — JTAG test clock input |
| 腳位 15 | TMS — JTAG test mode select input |
| 腳位 16 | TDI — JTAG test data input |
| 腳位 17 | TDO — JTAG test data output |
| 腳位 18 | VCCIO — I/O supply (3.3V nominal) |
| 腳位 19 | VCC — Core supply (5V) |
| 腳位 20 | nINIT_CONF — Initialize configuration (active low) |
| 腳位 21-83 | I/O / NC — Reserved configuration pins (see datasheet figure 4) |
| 腳位 84 | GND — Ground reference |
典型應用
EPC2L120N 適用於 6 應用s: Altera Cyclone II FPGA Configuration, APEX 20K / FLEX 10K Reference Designs, Industrial Control Boards, Legacy Test and Measurement Equipment, Video Processing Platforms, Aerospace Avionics (Legacy Programs).
Altera Cyclone II FPGA Configuration
The EPC2L120N stores the configuration bitstream of Altera Cyclone II EP2C5/EP2C8/EP2C20 FPGAs via the Fast Passive Parallel (FPP) interface at up to 66 MHz. Its 165,888-bit flash capacity easily fits Cyclone II bitstreams (typical 1-3 Mbits compressed), while 5V-tolerant I/O permits mixed-voltage boards with 3.3V FPGAs and 5V logic. Designers use this part on Cyclone II development kits and industrial control boards where a parallel configuration bus is preferred over the later EPCS serial flash.
推薦
APEX 20K / FLEX 10K Reference Designs
Altera APEX 20K and FLEX 10K devices use multi-voltage 5V/3.3V configuration buses where the EPC2L120N's 5V-tolerant I/O shines. Its 165,888-bit storage covers the bitstreams of EPF10K70 / EP20K200, and its JTAG ISP (IEEE 1149.1) allows in-system reprogramming via ByteBlasterMV or USB-Blaster download cables. Reference designs from Altera AN-203 and the APEX 20K development kit use the EPC2L120N as the canonical configuration companion.
推薦
Industrial Control Boards
Factory automation controllers often retain legacy Altera FPGAs for long lifecycle support (10+ years), where the EPC2L120N's PLCC-84 socketable form factor supports field upgrade and replacement. Its 100,000 program/erase endurance and -40C to +85C operating range suit industrial environments, and the JTAG ISP permits firmware update via boundary-scan without desoldering. Compared to EPCS serial flash, the PLCC socket allows a service technician to swap the config device in seconds.
推薦
Legacy Test and Measurement Equipment
Logic analyzers, oscilloscopes, and protocol analyzers built on Altera APEX 20K or FLEX 10K platforms use the EPC2L120N to store FPGA firmware because the parallel FPP bus enables fast reconfiguration during self-test routines. The 66 MHz max clock rate is critical for boot-time-sensitive instruments, and the 5V tolerance permits interfacing to older 5V PLDs and analog front ends. The PLCC package also fits the conventional through-hole layouts of 1990s-vintage test equipment.
推薦
Video Processing Platforms
Broadcast-grade video routers and frame synchronizers built on Altera APEX 20KE FPGAs use the EPC2L120N to store video pipeline firmware. The 165,888-bit capacity fits full bitstreams for EP20K400E and the parallel FPP bus enables rapid reconfig when switching video standards (PAL/NTSC/HD). The 5V-tolerant I/O permits legacy 5V ADC/DAC interfacing alongside 3.3V FPGA banks, simplifying PCB routing on mixed-voltage video boards.
推薦
Aerospace Avionics (Legacy Programs)
Long-life aerospace programs that locked their FPGA designs on Altera APEX or FLEX 10K devices in the early 2000s continue to source EPC2L120N for sustainment because the FPGAs' pin-compatible configuration interface is unchanged. The device's wide operating voltage range and JTAG ISP support secure in-field reprogramming on the flight line. The PLCC-84 package supports socketed sparing, allowing line-replaceable units to be swapped without board-level rework.
推薦
推薦產品摘要
工程參考資料，適用於 EPC2L120N — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | EPC2L120 | EPC2C20N | EPC2C8N | EPC22LC20 |
|---|---|---|---|---|---|
| Package | 84-pin PLCC (J-Lead) | 100-pin PQFP - different package | 84-pin PLCC - same | 84-pin PLCC - same | 20-pin PLCC - smaller |
| Brand | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) | Intel (formerly Altera) |
| JTAG ISP | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) | Yes (IEEE 1149.1) |
| Lifecycle Status | Obsolete (as of 2026-09-11) | Obsolete | Obsolete | Obsolete | Obsolete |
| Configuration Schemes | FPP / PS / JTAG / Daisy chain | FPP / PS / JTAG / Daisy chain | FPP / PS / JTAG / Daisy chain | FPP / PS / JTAG / Daisy chain | FPP / PS / JTAG |
| Target FPGA Family | Cyclone II / APEX / FLEX / Mercury / ACEX / Stratix | Cyclone II / APEX / FLEX / Mercury / ACEX / Stratix | Cyclone / APEX / FLEX / ACEX | FLEX / ACEX | FLEX / ACEX / Cyclone |
主要差異化特點
- Largest storage in the EPC2 PLCC family (對比EPC2C20N)
- 5V-tolerant I/O with 3.3V core supply (對比EPCS64)
- 84-pin PLCC socketable form factor (對比EPC2L120 (PQFP-100))
設計說明
The EPC2L120N requires dual supplies: VCCIO at 2.7V-3.6V for the I/O ring and VCC at 5V (or 3.3V) for the core. Decoupling is critical - place a 0.1uF X7R ceramic cap on each VCC/VCCIO pin with trace length under 2 mm. During JTAG programming, inrush current can spike to 50 mA per I/O bank; ensure bulk decoupling of 10uF tantalum near the device.
Route JTAG signals (TCK, TMS, TDI, TDO) with 50 ohm controlled impedance and avoid stubs; pull-ups (10 kohm) on TMS, TDI and TDO to VCCIO are mandatory. The 8-bit DATA bus to the target FPGA should be length-matched within +/-200 mils to preserve setup/hold at 66 MHz FPP. Keep DCLK away from DATA lines to avoid crosstalk; ground guard the bus on both sides.
Common pitfalls with the EPC2L120N include: (1) forgetting the JTAG pull-ups causing ISP failure; (2) using the wrong Quartus programming file (use .pof for EPC2, not .sof); (3) exceeding 5V on JTAG pins when VCCIO is 3.3V (the JTAG pins are 5V-tolerant but the FPGA target may not be); (4) driving CONF_DONE from external source instead of leaving it open-drain; (5) using ByteBlasterMV in PS mode where FPP is required for high-density bitstreams.
合規資訊
Compliance data not present in verified web sources. EPC2 family pre-dates widespread RoHS reporting; consult Intel product ecology documents for legacy Altera parts.