EP20K100EQC208-2 - 100K-Gate 1.8V FPGA | Altera APEX 20KE
料号： EP20K100EQC208-2 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
EP20K100EQC208-2 概述
What is an SRAM-based FPGA? A field-programmable gate array is an integrated circuit containing configurable logic blocks, programmable interconnects, and user I/O that can implement arbitrary digital logic after manufacturing. The EP20K100EQC208-2 belongs to the APEX-20KE family, positioned above simple CPLDs in logic capacity and intended for board-level integration without mask changes. Because SRAM-based FPGAs lose their configuration at power-off, the device must be reloaded from external configuration memory at every power-up, making configuration devices or a serial configuration source essential in the end application.
Key features of the EP20K100EQC208-2 include 4,160 logic elements for state machines, counters, datapath decoding, and custom control functions, plus 53,248 RAM bits that can implement FIFOs, small frame buffers, or distributed memory. The 151 user I/O channels are routed out to the 208-pin PQFP package, providing enough pins for parallel buses, backplane interfaces, and mezzanine connectors. The 1.8 V core voltage reduces logic power in dense systems, while the 250 MHz rated performance supports moderate-clock telecom and industrial designs.
On the technical side, EP20K100EQC208-2 uses the APEX 20KE logic-element fabric with embedded memory blocks, allowing designers to combine register-heavy and memory-heavy functions in one component. The PQFP-208 package uses gull-wing leads, which are inspectable after soldering and therefore practical for legacy board repair and controlled factory assembly. Because the FPGA is programmable in-circuit, prototype iterations require only a configuration update rather than new PCB fabrication. Speed-grade binning determines the specific combinatorial and registered timing limits for this -2 device.
Typical applications for EP20K100EQC208-2 include telecom line cards, industrial controller boards, networking switch fabric glue logic, and test-and-measurement front ends. Designers often use it to replace obsolete ASICs or multiple CPLDs while keeping the existing PCB footprint, especially when a 208-pin PQFP APEX-20KE socket is already present. Buffer management, address decoding, interface bridging, and alarm and status processing are all practical uses of the 4,160 logic elements.
A key design consideration is the mandatory configuration source: an SRAM FPGA such as EP20K100EQC208-2 cannot operate immediately after power-up unless an EPC configuration device, microprocessor, or serial configuration source loads the bitstream. Timing closure must also be run with the -2 speed-grade constraints rather than assuming generic APEX timing. Use 1.8 V core decoupling close to every VCCINT pin and follow the power-up sequencing rules in the APEX 20K family documentation.
This XAIPART page aggregates distributor availability, drop-in APEX package alternatives, and practical legacy-system guidance that supplement the manufacturer datasheet, giving engineers a single comparison point for an older but still widely stocked programmable logic family.
直接替换替代料： EP20K100EQC208-2 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： EP20K100EQC208-2 （相同外形与封装尺寸） ——差异在于 Package, Speed Grade, Family, Operating Temperature, Operating Temperature Range.
快速对比工具——选择替代料号进行并排对比：
EP20K100EQC208-1X
✅ 直接替换✓ 有现货
$152 / 个
查看数据手册 →EP20K100EQC208-1X
✅ 直接替换✓ 有现货
$152 / 个
查看数据手册 →EP20K100EQC208-2XN
✅ 直接替换📋 参考替代料（不在目录中）
EP20K100EQC208-2 最大额定值与电气特性
| Series | APEX-20KE |
| Product Type | FPGA - Field Programmable Gate Array |
| Number of Logic Elements | 4160 |
| Number of Gates | 100K gates |
| Total RAM Bits | 53248 |
| Number of User I/Os | 151 |
| Core Supply Voltage | 1.8 V nominal (1.71 V to 1.89 V) |
| Maximum Operating Frequency | 250 MHz |
| 工作温度范围 | 0°C to +85°C |
| 封装 | 208-BFQFP |
| Package Code | FQFP |
| Package Shape | Square |
| Number of Terminals | 208 |
| Terminal Form | Gull wing |
| 安装类型 | Surface Mount |
| Technology | CMOS |
EP20K100EQC208-2 square 引脚配置指南
EP20K100EQC208-2（square 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： EP20K100EQC208-2.
请参阅 数据手册 以查看完整引脚配置。
典型应用
EP20K100EQC208-2 适用于 6 应用s: Legacy Industrial Controller Upgrade, Telecom and Access-Network Bridging, High-Performance Computing Interface Logic, Test and Measurement Instrumentation, Networking Switch Fabric and Glue Logic, DSP and Data Acquisition Preprocessing.
Legacy Industrial Controller Upgrade
EP20K100EQC208-2 fits legacy industrial controller upgrades because its 151 user I/Os can monitor parallel buses, thumbwheel switches, and relay-driver logic while its 4,160 logic elements implement the required state machines. The 0°C to 85°C commercial range is acceptable for indoor PLC cabinets with forced-air or natural convection cooling. The on-chip 53,248 RAM bits create small FIFOs for alarm history without requiring external SRAM. Since the FPGA is SRAM-based, the board must include a configuration source such as an EPC device or microprocessor loader to program it after every power-up. When replacing an existing APEX 20K module, verify the original bitstream was compiled for a -2 speed grade; if it was, EP20K100EQC208-2 is the direct drop-in target.
推荐
Telecom and Access-Network Bridging
Telecom line cards need flexible bridge and glue logic between framers, DSPs, and backplane buses. The EP20K100EQC208-2 provides 151 user I/O and 53,248 RAM bits for rate-matching FIFOs, while its 4,160 logic elements handle address decode, custom framing state machines, and backplane timing generation. Its 1.8 V core keeps logic power low in dense telecom racks, and the 0°C to 85°C range covers controlled central-office environments. Because the 208-BFQFP package uses gull-wing leads, solder joints remain inspectable, simplifying legacy telecom board repair. If a lead-free build is required after original tin-lead qualification, the EP20K100EQC208-2XN variant should be validated for solder-joint reliability and reflow profile.
推荐
High-Performance Computing Interface Logic
In high-performance computing systems, EP20K100EQC208-2 can act as a flexible I/O hub between CPUs, DSPs, memory controllers, and mezzanine connectors. The FPGA's 151 user I/O pins allow numerous parallel or single-ended buses to be connected, while its 4,160 logic elements implement protocol converters, address interleaving, and handshake logic. The 53,248 RAM bits are useful for small FIFOs and mailbox registers between different clock domains. The -2 speed grade supports moderate-clock interface logic but is not intended for the fastest source-synchronous SerDes interfaces found in newer FPGAs. For legacy compute boards that already use a 208-PQFP APEX-20KE socket, EP20K100EQC208-2 offers a low-risk replacement without PCB changes.
推荐
Test and Measurement Instrumentation
EP20K100EQC208-2 is well suited to test and measurement front ends that need flexible trigger logic, acquisition control, and instrument-bus interfacing. Its 4,160 logic elements can implement trigger state machines, timer/counter blocks, and calibration sequence controllers, while its 151 I/O pins connect to ADCs, DACs, front-panel controls, and host processor buses. The 53,248 RAM bits can store small acquisition buffers or histograms without tying up external memory. Commercial temperature operation is acceptable for benchtop and rack-mount instruments. The PQFP-208 package is easily reworkable, which is valuable during instrument prototype iterations. Existing firmware and configuration files developed for APEX-20KE -2 devices can generally be retained when using this part.
推荐
Networking Switch Fabric and Glue Logic
EP20K100EQC208-2 provides a high I/O count suitable for small networking switch and router boards that need packet-buffer pointers, VLAN tag translation, and management-interface glue logic. The FPGA's 151 user I/O can connect to switch ASICs, PHYs, and control-plane microprocessors, while its 53,248 RAM bits are used for descriptor queues and port statistics. The 4,160 logic elements implement table-lookup state machines, CRC/error checking, and bus arbitration. At a 1.8 V core, the device consumes less power than many older 2.5 V FPGAs, making it compatible with legacy networking line-card power budgets. Because this is an SRAM FPGA, the configuration file must be held in a boot flash or configuration device on the line card.
推荐
DSP and Data Acquisition Preprocessing
EP20K100EQC208-2 can preprocess sampled data before it reaches a DSP or microprocessor by implementing decimation filters, sample alignment, and channel sequencing logic. The 4,160 logic elements provide enough fabric for simple FIR address generators, 16-bit counters, and channel multiplexers; the 151 user I/O connect directly to high-speed ADCs, DACs, and processor buses. The 53,248 RAM bits are valuable for circular sample buffers and time-skew correction. The 1.8 V core supply keeps the FPGA section of a mixed-signal board manageable, and the 0°C to 85°C temperature range is conventional for laboratory data acquisition. When a legacy DSP board uses an APEX-20KE 208-PQFP device, replacing it with EP20K100EQC208-2 can avoid a PCB redesign.
推荐
推荐产品汇总
工程参考数据： EP20K100EQC208-2 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | EP20K100EQC208-1X | EP20K100EQC208-1 | EP20K100EQC208-2XN |
|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera |
| Package | 208-BFQFP (208-PQFP) | 208-BFQFP (208-PQFP) - same | 208-BFQFP (208-PQFP) - same | 208-BFQFP (208-PQFP) - same |
| FPGA Family | APEX-20KE | APEX-20KE | APEX-20KE | APEX-20KE |
| Logic Elements | 4160 | 4160 | 4160 | 4160 |
| Total RAM Bits | 53248 | 53248 | 53248 | 53248 |
| User I/O | 151 | 151 | 151 | 151 |
| Core Supply Voltage | 1.8 V (1.71 V to 1.89 V) | 1.8 V (1.71 V to 1.89 V) | 1.8 V (1.71 V to 1.89 V) | 1.8 V (1.71 V to 1.89 V) |
| Operating Temperature | 0°C to +85°C | 0°C to +85°C | 0°C to +85°C | 0°C to +85°C |
| Speed-Grade Suffix | -2 | -1X | -1 | -2XN |
关键差异点
- Direct 208-BFQFP footprint for legacy board replacement （对比 EP20K100EQC208-1X)
- Commercial temperature grade aligns with indoor legacy equipment （对比 EP20K100EQC208-1)
- No PCB redesign required across the same APEX variant family （对比 EP20K100EQC208-2XN)
设计说明
EP20K100EQC208-2 uses a 1.8 V core supply, but the number of core power pins and the exact VCCINT current depend on the design's logic utilization, clock frequency, and I/O loading. Estimated: without board-level power data, use at least one 0.1 uF ceramic capacitor close to each VCCINT pin plus a bulk capacitor in the range of 10 uF to 47 uF per quadrant of the PQFP-208 package. Keep the 1.8 V regulator's sense trace short and stable during configuration surges. Verify the inrush current at power-up with the configuration device attached, because an unconfigured FPGA can transiently draw more current than during normal logic operation.
The 208-pin BFQFP package uses gull-wing leads on a square body. Fan out every lead to a via or test point during PCB layout so the part can be probed and reworked if an original legacy board is being replicated. Place the configuration interface header and the EPC/configuration memory close to the FPGA's dedicated configuration pins, and keep serial configuration traces short to avoid ringing. If this part is replacing an existing APEX-20KE 208-PQFP device, verify the footprint's pad size and thermal relief against the Altera recommended land pattern before committing to production.
Do not treat EP20K100EQC208-2 as a power-on-ready logic device; it is SRAM-based and must receive a configuration bitstream after every power-up. A common failure is designing a board with no configuration device, leaving the FPGA I/O pins in an undefined state until an external host loads them. Ensure the configuration voltage levels are compatible with the selected configuration source and that the reset and nCONFIG signals are properly terminated. Because APEX 20K is a legacy family, avoid assuming that a current FPGA development tool still has complete device support; use the last Altera tool version that supports APEX-20KE and lock the configuration settings.
合规信息
No RoHS/lead-finish statement was captured for the base -2 order code. The N/XN suffix variants are commonly used to indicate lead-free finish on Altera devices; confirm the exact marking and manufacturer statement before requiring RoHS compliance.