EPC8QC100DM - 8Mb In-System Prog Config PROM | Intel FPGA | PQFP-100
MPN： EPC8QC100DM ✗ 停產EPC8QC100DM 概覽
A configuration PROM (also called a serial configuration device or FPGA configuration flash) is a non-volatile memory IC dedicated to storing the FPGA bitstream. In the hierarchy of configuration storage, EPC devices sit above generic SPI flash and below hard-wired boot ROMs: they are pre-validated for the FPGA configuration protocol, eliminating the bitstream remapping, multi-boot sequencing, and remote-update logic that a generic flash would require. EPC PROMs are organized into series (EPC1, EPC2, EPC4, EPC8, EPC16, EPC64, EPC128) where the digit indicates approximate megabit capacity.
Key features of the EPC8QC100DM include 8 Mb (1 MB) storage capacity, 3.3 V single-supply operation, serial interface clocking up to 40 MHz, in-system programmability through the JTAG (IEEE 1149.1) port, and dedicated cascade-support pins that allow two EPC8 devices to be chained for 16 Mb total configuration memory - useful for large Cyclone/Arria-family bitstreams. The 'DM' suffix denotes the industrial operating-temperature grade and the 100-pin PQFP surface-mount package.
The device uses a serial daisy-chain interface optimized for the Altera Passive Serial (PS), Passive Parallel Synchronous (PPS), and Active Serial (AS) configuration schemes. When cascaded, a single EPC8 holds the lower-address portion of the bitstream while a second EPC8 holds the upper portion; this is referenced in Altera application note AN-370 and the Enhanced Configuration (EPC) Devices datasheet. The JTAG chain integrates cleanly with the FPGA's JTAG chain using only four boundary-scan pins (TCK, TMS, TDI, TDO), so no extra board space is required for ISP.
Typical applications include configuration memory for Cyclone, Cyclone II, Cyclone III, Stratix, and Arria-family FPGAs in industrial controllers, telecom line cards, video-broadcast equipment, and military/aerospace systems where field-reprogrammability is required for in-field firmware updates. The industrial temperature range and PQFP-100 package also make it suitable for legacy designs with through-hole-style rework or hand-repair workflows where QFN packages are less practical.
When designing with the EPC8QC100DM, ensure the JTAG chain includes the FPGA and any other JTAG devices; verify that the nCASC pin is tied correctly when only one EPC8 is used, and add a 100 ohm series termination on the DCLK line for cable lengths exceeding 150 mm. Designers upgrading to newer MAX-series FPGAs should evaluate the EPCQ-series or the second-generation MAX V CPLD configuration architecture, since legacy EPC PROMs are no longer recommended for new designs targeting MAX 10 or Cyclone 10 LP devices.
This page synthesizes distributor pricing, drop-in same-package alternatives, JTAG-ISP design notes, and cascade-chain wiring guidance not collected on any single distributor product page.
直接替換替代品，適用於 EPC8QC100DM — 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： EPC8QC100DM （相同外形與佔位） — 差異在於 Package, Memory Type, Configuration Interface, Operating Temperature, Memory Size.
EPC8QC100
✅ 直接替換聯絡詢價
查看資料表 →EPC8QC100-T
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPC8QC100C
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPC8QI100N
✅ 直接替換聯絡詢價
查看資料表 →EPC16QC100DM
✅ 直接替換聯絡詢價
查看資料表 →EPC8QC100DM 最大額定值與電氣特性
| 記憶體類型 | Non-volatile configuration PROM |
| 記憶體容量 | 8 Mb (1 MB) |
| 介面 | Serial (Passive Serial / Passive Parallel Synchronous / Active Serial) |
| Supply Voltage (VCC) | 3.0 V to 3.6 V (3.3 V typical) |
| Maximum DCLK Frequency | 40 MHz |
| In-System Programming | Yes (IEEE 1149.1 / IEEE 1532 JTAG) |
| Cascade Support | Yes - two EPC8 devices for 16 Mb |
| 工作溫度 | -40 C to +85 C (industrial / DM suffix) |
| 封裝 | 100-PQFP (20 x 14 mm) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 1 (Unlimited) |
| RoHS 狀態 | Compliant |
| Lead-Free / Halogen-Free | Lead-free (per supplier); halogen status not in datasheet excerpt |
| Compatible FPGA Families | Cyclone, Cyclone II, Cyclone III, Stratix, Arria |
| Configuration Modes | PS, PPS, AS (with appropriate FPGA master) |
EPC8QC100DM 100-pqfp (20 x 14 mm) 腳位配置指南
EPC8QC100DM（100-pqfp (20 x 14 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： EPC8QC100DM.
請參閱 資料表 以查看完整腳位配置。
典型應用
EPC8QC100DM 適用於 6 應用s: Cyclone / Cyclone II FPGA Configuration Memory, Stratix / Stratix II Mid-Density Bitstream Storage, Industrial Control & Factory Automation Controllers, Telecom Line Cards & Network Infrastructure, Video Broadcast & Professional AV Equipment, Military & Aerospace Avionics Subsystems.
Cyclone / Cyclone II FPGA Configuration Memory
The EPC8QC100DM serves as the dedicated configuration memory for first- and second-generation Intel Cyclone FPGAs, storing the compressed or uncompressed bitstream that the Cyclone's Passive Serial (PS) or Active Serial (AS) configuration controller reads at boot. The EPC8's 8 Mb capacity covers Cyclone EP1C3, EP1C4, EP1C6, EP1C12, and most EP1C20 designs without bitstream compression, and the JTAG-based ISP allows field upgrades of the FPGA logic without removing the board. Cascading two EPC8 devices supports the larger Cyclone II EP2C35/EP2C50 bitstreams when needed. The 3.3 V single-supply operation matches the Cyclone's VCCINT rail, eliminating level shifters.
推薦
Stratix / Stratix II Mid-Density Bitstream Storage
For mid-density Stratix and Stratix II designs that fit within 8 Mb after Altera bitstream compression, the EPC8QC100DM provides an industrial-temperature, surface-mount configuration memory in the familiar PQFP-100 footprint. Designers favor the EPC8 over a generic SPI flash because the passive-serial protocol is pre-implemented in the EPC silicon, removing the need for glue logic or a third-party SPI controller. The 40 MHz DCLK rate keeps configuration times under 250 ms for a fully populated 8 Mb bitstream, fast enough for telecom line-card hot-swap and avionics reset cycles.
推薦
Industrial Control & Factory Automation Controllers
The EPC8QC100DM's industrial -40 C to +85 C operating range and lead-free PQFP-100 package make it a strong fit for PLC backplanes, motor-drive control boards, and SCADA I/O modules that must operate in unheated cabinets or outdoor enclosures. The PQFP-100 leads are robust enough for hand-repair and rework, an advantage over fine-pitch QFN configuration memory in legacy industrial designs. JTAG-ISP enables field firmware rollouts across installed base equipment without returning boards to a depot, dramatically reducing total cost of ownership for fleet-managed industrial assets.
推薦
Telecom Line Cards & Network Infrastructure
Telecom line cards using Altera/Intel FPGAs for packet processing, SERDES aggregation, or TDM/framer functions boot their bitstreams from the EPC8QC100DM, where the 3.3 V supply, industrial temperature, and PQFP-100 package suit the long-life NEBS-compliant hardware used in central offices. The EPC8 supports hot-swap of the FPGA bitstream under CPU control and integrates into a multi-device JTAG chain with the FPGA plus boundary-scan buffers. Cascading two EPC8 devices to 16 Mb is the recommended pattern for higher-density Stratix II EP2S60 line-card designs.
推薦
Video Broadcast & Professional AV Equipment
Professional video encoders, frame synchronizers, and broadcast routers use Cyclone/Stratix FPGAs configured by the EPC8QC100DM to hold firmware across the -40 C to +85 C operating envelope demanded by air-conditioned studios and unventilated outdoor transmitter cabinets. The EPC8's serial interface preserves board space compared to parallel boot PROMs, while its PQFP-100 mechanical package is preferred for broadcast OEM repair workflows that use hot-air rework rather than BGA reflow. In-system JTAG programming lets broadcast engineers ship firmware updates as compressed bitstreams over Ethernet without opening chassis.
推薦
Military & Aerospace Avionics Subsystems
Long-lifecycle avionics subsystems, unmanned-vehicle flight controllers, and military radio platforms rely on the EPC8QC100DM because the Altera/Intel EPC PROM family has decades of qualified heritage and the PQFP-100 package survives the mechanical-shock and vibration profiles typical of DO-160 environments. The EPC8's passive-serial interface is well-documented in Altera application notes used by avionics integrators, and its JTAG port supports the boundary-scan-based BIT (built-in test) required for flight-certifiable subsystems. Designers migrating to newer Intel FPGAs retain the EPC8 as a fallback configuration path while qualifying EPCQ-series silicon.
推薦
推薦產品摘要
工程參考資料，適用於 EPC8QC100DM — 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 | EPC8QC100 | EPC8QC100-T | EPC8QC100C | EPC8QI100N | EPC16QC100DM |
|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel | Intel | Intel | Intel | Intel |
| Package | PQFP-100 (20 x 14 mm) | PQFP-100 - same | PQFP-100 - same | PQFP-100 - same | PQFP-100 - same | PQFP-100 - same |
| Memory Size | 8 Mb | 8 Mb | 8 Mb | 8 Mb | 8 Mb | 16 Mb |
| Supply Voltage | 3.3 V (3.0-3.6 V) | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| DCLK Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| JTAG ISP Support | Yes (IEEE 1149.1 / 1532) | Yes | Yes | Yes | Yes | Yes |
| Cascade Support | Yes (two devices for 16 Mb) | Yes | Yes | Yes | Yes | Yes (or use single device at 16 Mb) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主要差異化特點
- Industrial temperature grade in PQFP-100 (對比EPC8QC100)
- Half the density of the EPC16QC100DM (對比EPC16QC100DM)
- PQFP-100 leaded package vs QFN alternatives (對比EPC8QI100N)
設計說明
Place the EPC8QC100DM within 50 mm of the FPGA's configuration pins to keep the DCLK trace short and avoid reflections at the 40 MHz maximum clock rate. Add a 33 ohm series resistor on DCLK near the FPGA for trace lengths over 75 mm. Route DATA, DCLK, and nCONFIG on the same layer with a continuous ground return underneath; keep these signals away from switching-power-supply and clock nets to prevent crosstalk during the 8 Mb configuration load.
The EPC8QC100DM draws a peak inrush of approximately 30 mA on VCC during power-on reset; a 10 uF bulk + 100 nF decoupling pair within 5 mm of the VCC pins is required. Tie VCC directly to the 3.3 V rail that powers the FPGA's VCCIO configuration bank; if the FPGA uses 1.8 V or 1.5 V I/O, a separate 3.3 V rail must remain present during configuration because the EPC8 does not support level translation.
Do not leave nCASC floating when using a single EPC8QC100DM; it must be tied to GND through a 10 kohm resistor or directly so the master EPC8 does not hand control to a non-existent slave. Per the Enhanced Configuration datasheet, when cascading two EPC8 devices, the master's nCASC output drives the slave's nCS pin, and the FPGA MSEL pins must select the cascaded PS or PPS mode. Forgetting to program the FPGA MSEL pins to the correct cascaded value is the most common configuration-failure root cause.
合規資訊
RoHS compliance confirmed by supplier listings (QTreeic, DigiKey). Lead-free per supplier description. AEC-Q100 not applicable - this is a configuration PROM, not an automotive-grade IC. Halogen-free and conflict-minerals status not in datasheet excerpt - set to unknown.
