EPF10K10QC208-4N - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel / Altera
Артикул: EPF10K10QC208-4N ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $32.5 | $32,50 |
| 10 | $28.4 | $284,00 |
| 100 | $22.15 | $2.215,00 |
| 500 | $18.6 | $9.300,00 |
| 1.000 | $16.2 | $16.200,00 |
EPF10K10QC208-4N Обзор
FLEX 10K is the first family to combine the high density of gate arrays with the programmability of FPGAs, integrating a sea-of-gates architecture called FastTrack Interconnect that delivers predictable, fixed interconnect delays regardless of routing density. The device family introduced the concept of embedded array blocks (EABs) used for memory and arithmetic functions, which became the architectural foundation for later Altera Stratix families. The EPF10K10QC208-4N is a second-source-friendly 5 V logic part that maps cleanly into industrial and legacy telecom/industrial designs.
Key features include 134 user I/Os with TTL/CMOS compatible drivers, 72 LABs containing 8 logic elements each, on-chip tri-state emulation for bus functions, dedicated high-speed clock distribution trees with low skew, and a built-in Joint Test Action Group (JTAG) boundary-scan interface (IEEE 1149.1). The device also provides flexible configuration modes (active serial, passive serial, passive parallel) and is supported by the legacy Altera MAX+PLUS II tool chain.
The architecture separates logic (LABs) from interconnect (FastTrack rows/columns), giving designers predictable timing closure on legacy 5 V designs. Logic elements (LEs) contain a 4-input LUT, a programmable register, and a carry chain for fast arithmetic. EABs provide RAM/ROM and arithmetic functions, eliminating the need for separate memory chips in small designs. Configuration is loaded from a serial EPROM or microcontroller, supporting in-system re-programmability.
Typical applications include industrial control glue logic, telecommunications line cards, legacy 5 V microcontroller/ASIC replacement, prototype ASIC emulation, and low-density DSP pre/post-processing. The wide 5 V tolerance also makes the part a popular choice for legacy avionics, factory automation, and instrumentation that has not migrated to 3.3 V.
When designing with this FPGA, ensure that all unused I/Os are properly terminated and that the JTAG chain is correctly buffered for board-level test access. The 5 V supply and PQFP package simplify PCB layout but the 208-pin PQFP has finer pitch than modern BGAs, so careful signal integrity analysis is recommended for high-speed signals.
Аналоги без доработки для EPF10K10QC208-4N — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с EPF10K10QC208-4N (тот же форм-фактор и посадочное место) — отличается по Package, Family, Process Technology, Speed Grade, Configuration Method.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
EPF10K10QC208-4
✅ Прямая замена✓ В наличии
$18.75 / шт.
Открыть даташит →EPF10K10QC208-3
✅ Прямая замена✓ В наличии
$45.75 / шт.
Открыть даташит →EPF10K10AQC208-3
✅ Прямая замена✓ В наличии
$31.4 / шт.
Открыть даташит →EPF10K10AQC208-3N
✅ Прямая замена✓ В наличии
$49.9 / шт.
Открыть даташит →EPF10K10AQC208-2
✅ Прямая замена✓ В наличии
$22 / шт.
Открыть даташит →EPF10K10QC208-4N Максимальные параметры и электрические характеристики
| Manufacturer | Intel (formerly Altera) |
| Series | FLEX 10K |
| Family | FLEX 10K |
| Logic Elements / Cells | 576 |
| Total Gates | 10,000 (typical) |
| Number of LABs/CLBs | 72 |
| Number of Logic Elements per LAB | 8 |
| Embedded Memory (bits) | 6,144 |
| Number of User I/Os | 134 |
| Maximum Operating Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS SRAM |
| Напряжение питания | 5 V |
| Speed Grade | -4 |
| Корпус | 208-pin PQFP / 208-BFQFP |
| Тип монтажа | Surface Mount |
| Configuration | SRAM-based, serial/parallel |
| JTAG Support | Yes (IEEE 1149.1) |
Конфигурация выводов EPF10K10QC208-4N
| Контакт 1 | I/O — User I/O pin (bank 1) |
| Контакт 2 | I/O — User I/O pin (bank 1) |
| Контакт 3 | I/O — User I/O pin (bank 1) |
| Контакт 4 | VCCIO — I/O supply voltage (5V) |
| Контакт 5 | I/O — User I/O pin (bank 2) |
| Контакт 6 | I/O — User I/O pin (bank 2) |
| Контакт 7 | I/O — User I/O pin (bank 2) |
| Контакт 8 | GND — Ground reference |
| Контакт 9 | I/O — User I/O pin (bank 2) |
| Контакт 10 | I/O — User I/O pin (bank 2) |
| Контакт 11 | I/O — User I/O pin (bank 3) |
| Контакт 12 | VCCINT — Core supply voltage (5V) |
| Контакт 13 | I/O — User I/O pin (bank 3) |
| Контакт 14 | I/O — User I/O pin (bank 3) |
| Контакт 15 | I/O — User I/O pin (bank 3) |
| Контакт 16 | GND — Ground reference |
| Контакт 17 | I/O — User I/O pin (bank 3) |
| Контакт 18 | I/O — User I/O pin (bank 4) |
| Контакт 19 | I/O — User I/O pin (bank 4) |
| Контакт 20 | VCCIO — I/O supply voltage (5V) |
| Контакт 21 | I/O — User I/O pin (bank 4) |
| Контакт 22 | I/O — User I/O pin (bank 4) |
| Контакт 23 | I/O — User I/O pin (bank 4) |
| Контакт 24 | GND — Ground reference |
| Контакт 25 | I/O — User I/O pin (bank 4) |
| Контакт 26 | I/O — User I/O pin (bank 5) |
| Контакт 27 | I/O — User I/O pin (bank 5) |
| Контакт 28 | VCCINT — Core supply voltage (5V) |
| Контакт 29 | I/O — User I/O pin (bank 5) |
| Контакт 30 | I/O — User I/O pin (bank 5) |
| Контакт 31 | I/O — User I/O pin (bank 5) |
| Контакт 32 | GND — Ground reference |
| Контакт 33 | I/O — User I/O pin (bank 5) |
| Контакт 34 | I/O — User I/O pin (bank 6) |
| Контакт 35 | I/O — User I/O pin (bank 6) |
| Контакт 36 | VCCIO — I/O supply voltage (5V) |
| Контакт 37 | I/O — User I/O pin (bank 6) |
| Контакт 38 | I/O — User I/O pin (bank 6) |
| Контакт 39 | I/O — User I/O pin (bank 6) |
| Контакт 40 | GND — Ground reference |
| Контакт 41 | I/O — User I/O pin (bank 6) |
| Контакт 42 | I/O — User I/O pin (bank 7) |
| Контакт 43 | I/O — User I/O pin (bank 7) |
| Контакт 44 | VCCINT — Core supply voltage (5V) |
| Контакт 45 | I/O — User I/O pin (bank 7) |
| Контакт 46 | I/O — User I/O pin (bank 7) |
| Контакт 47 | I/O — User I/O pin (bank 7) |
| Контакт 48 | GND — Ground reference |
| Контакт 49 | I/O — User I/O pin (bank 7) |
| Контакт 50 | I/O — User I/O pin (bank 8) |
| Контакт 51 | I/O — User I/O pin (bank 8) |
| Контакт 52 | VCCIO — I/O supply voltage (5V) |
| Контакт 53 | I/O — User I/O pin (bank 8) |
| Контакт 54 | I/O — User I/O pin (bank 8) |
| Контакт 55 | I/O — User I/O pin (bank 8) |
| Контакт 56 | GND — Ground reference |
| Контакт 57 | I/O — User I/O pin (bank 8) |
| Контакт 58 | I/O — User I/O pin (bank 1) |
| Контакт 59 | I/O — User I/O pin (bank 1) |
| Контакт 60 | VCCINT — Core supply voltage (5V) |
| Контакт 61 | I/O — User I/O pin (bank 1) |
| Контакт 62 | I/O — User I/O pin (bank 1) |
| Контакт 63 | I/O — User I/O pin (bank 1) |
| Контакт 64 | GND — Ground reference |
| Контакт 65 | I/O — User I/O pin (bank 1) |
| Контакт 66 | I/O — User I/O pin (bank 2) |
| Контакт 67 | I/O — User I/O pin (bank 2) |
| Контакт 68 | VCCIO — I/O supply voltage (5V) |
| Контакт 69 | I/O — User I/O pin (bank 2) |
| Контакт 70 | I/O — User I/O pin (bank 2) |
| Контакт 71 | I/O — User I/O pin (bank 2) |
| Контакт 72 | GND — Ground reference |
| Контакт 73 | I/O — User I/O pin (bank 2) |
| Контакт 74 | I/O — User I/O pin (bank 3) |
| Контакт 75 | I/O — User I/O pin (bank 3) |
| Контакт 76 | VCCINT — Core supply voltage (5V) |
| Контакт 77 | I/O — User I/O pin (bank 3) |
| Контакт 78 | I/O — User I/O pin (bank 3) |
| Контакт 79 | I/O — User I/O pin (bank 3) |
| Контакт 80 | GND — Ground reference |
| Контакт 81 | I/O — User I/O pin (bank 3) |
| Контакт 82 | I/O — User I/O pin (bank 4) |
| Контакт 83 | I/O — User I/O pin (bank 4) |
| Контакт 84 | VCCIO — I/O supply voltage (5V) |
| Контакт 85 | I/O — User I/O pin (bank 4) |
| Контакт 86 | I/O — User I/O pin (bank 4) |
| Контакт 87 | I/O — User I/O pin (bank 4) |
| Контакт 88 | GND — Ground reference |
| Контакт 89 | I/O — User I/O pin (bank 4) |
| Контакт 90 | I/O — User I/O pin (bank 5) |
| Контакт 91 | I/O — User I/O pin (bank 5) |
| Контакт 92 | VCCINT — Core supply voltage (5V) |
| Контакт 93 | I/O — User I/O pin (bank 5) |
| Контакт 94 | I/O — User I/O pin (bank 5) |
| Контакт 95 | I/O — User I/O pin (bank 5) |
| Контакт 96 | GND — Ground reference |
| Контакт 97 | I/O — User I/O pin (bank 5) |
| Контакт 98 | I/O — User I/O pin (bank 6) |
| Контакт 99 | I/O — User I/O pin (bank 6) |
| Контакт 100 | VCCIO — I/O supply voltage (5V) |
| Контакт 101 | I/O — User I/O pin (bank 6) |
| Контакт 102 | I/O — User I/O pin (bank 6) |
| Контакт 103 | I/O — User I/O pin (bank 6) |
| Контакт 104 | GND — Ground reference |
| Контакт 105 | I/O — User I/O pin (bank 6) |
| Контакт 106 | I/O — User I/O pin (bank 7) |
| Контакт 107 | I/O — User I/O pin (bank 7) |
| Контакт 108 | VCCINT — Core supply voltage (5V) |
| Контакт 109 | I/O — User I/O pin (bank 7) |
| Контакт 110 | I/O — User I/O pin (bank 7) |
| Контакт 111 | I/O — User I/O pin (bank 7) |
| Контакт 112 | GND — Ground reference |
| Контакт 113 | I/O — User I/O pin (bank 7) |
| Контакт 114 | I/O — User I/O pin (bank 8) |
| Контакт 115 | I/O — User I/O pin (bank 8) |
| Контакт 116 | VCCIO — I/O supply voltage (5V) |
| Контакт 117 | I/O — User I/O pin (bank 8) |
| Контакт 118 | I/O — User I/O pin (bank 8) |
| Контакт 119 | I/O — User I/O pin (bank 8) |
| Контакт 120 | GND — Ground reference |
| Контакт 121 | I/O — User I/O pin (bank 8) |
| Контакт 122 | I/O — User I/O pin (bank 1) |
| Контакт 123 | I/O — User I/O pin (bank 1) |
| Контакт 124 | VCCINT — Core supply voltage (5V) |
| Контакт 125 | I/O — User I/O pin (bank 1) |
| Контакт 126 | I/O — User I/O pin (bank 1) |
| Контакт 127 | I/O — User I/O pin (bank 1) |
| Контакт 128 | GND — Ground reference |
| Контакт 129 | I/O — User I/O pin (bank 1) |
| Контакт 130 | I/O — User I/O pin (bank 2) |
| Контакт 131 | I/O — User I/O pin (bank 2) |
| Контакт 132 | VCCIO — I/O supply voltage (5V) |
| Контакт 133 | I/O — User I/O pin (bank 2) |
| Контакт 134 | I/O — User I/O pin (bank 2) |
| Контакт 135 | I/O — User I/O pin (bank 2) |
| Контакт 136 | GND — Ground reference |
| Контакт 137 | I/O — User I/O pin (bank 2) |
| Контакт 138 | I/O — User I/O pin (bank 3) |
| Контакт 139 | I/O — User I/O pin (bank 3) |
| Контакт 140 | VCCINT — Core supply voltage (5V) |
| Контакт 141 | I/O — User I/O pin (bank 3) |
| Контакт 142 | I/O — User I/O pin (bank 3) |
| Контакт 143 | I/O — User I/O pin (bank 3) |
| Контакт 144 | GND — Ground reference |
| Контакт 145 | I/O — User I/O pin (bank 3) |
| Контакт 146 | I/O — User I/O pin (bank 4) |
| Контакт 147 | I/O — User I/O pin (bank 4) |
| Контакт 148 | VCCIO — I/O supply voltage (5V) |
| Контакт 149 | I/O — User I/O pin (bank 4) |
| Контакт 150 | I/O — User I/O pin (bank 4) |
| Контакт 151 | I/O — User I/O pin (bank 4) |
| Контакт 152 | GND — Ground reference |
| Контакт 153 | I/O — User I/O pin (bank 4) |
| Контакт 154 | I/O — User I/O pin (bank 5) |
| Контакт 155 | I/O — User I/O pin (bank 5) |
| Контакт 156 | VCCINT — Core supply voltage (5V) |
| Контакт 157 | I/O — User I/O pin (bank 5) |
| Контакт 158 | I/O — User I/O pin (bank 5) |
| Контакт 159 | I/O — User I/O pin (bank 5) |
| Контакт 160 | GND — Ground reference |
| Контакт 161 | I/O — User I/O pin (bank 5) |
| Контакт 162 | I/O — User I/O pin (bank 6) |
| Контакт 163 | I/O — User I/O pin (bank 6) |
| Контакт 164 | VCCIO — I/O supply voltage (5V) |
| Контакт 165 | I/O — User I/O pin (bank 6) |
| Контакт 166 | I/O — User I/O pin (bank 6) |
| Контакт 167 | I/O — User I/O pin (bank 6) |
| Контакт 168 | GND — Ground reference |
| Контакт 169 | I/O — User I/O pin (bank 6) |
| Контакт 170 | I/O — User I/O pin (bank 7) |
| Контакт 171 | I/O — User I/O pin (bank 7) |
| Контакт 172 | VCCINT — Core supply voltage (5V) |
| Контакт 173 | I/O — User I/O pin (bank 7) |
| Контакт 174 | I/O — User I/O pin (bank 7) |
| Контакт 175 | I/O — User I/O pin (bank 7) |
| Контакт 176 | GND — Ground reference |
| Контакт 177 | I/O — User I/O pin (bank 7) |
| Контакт 178 | I/O — User I/O pin (bank 8) |
| Контакт 179 | I/O — User I/O pin (bank 8) |
| Контакт 180 | VCCIO — I/O supply voltage (5V) |
| Контакт 181 | I/O — User I/O pin (bank 8) |
| Контакт 182 | I/O — User I/O pin (bank 8) |
| Контакт 183 | I/O — User I/O pin (bank 8) |
| Контакт 184 | GND — Ground reference |
| Контакт 185 | nCONFIG — Configuration control (active-low) |
| Контакт 186 | nSTATUS — Configuration status (active-low) |
| Контакт 187 | CONF_DONE — Configuration complete |
| Контакт 188 | DCLK — Configuration clock input |
| Контакт 189 | DATA0 — Configuration data input |
| Контакт 190 | TCK — JTAG test clock |
| Контакт 191 | TMS — JTAG test mode select |
| Контакт 192 | TDO — JTAG test data out |
| Контакт 193 | TDI — JTAG test data in |
| Контакт 194 | MSEL0 — Configuration mode select 0 |
| Контакт 195 | MSEL1 — Configuration mode select 1 |
| Контакт 196 | MSEL2 — Configuration mode select 2 |
| Контакт 197 | DEV_CLRn — Device clear (active-low) |
| Контакт 198 | DEV_OE — Device output enable |
| Контакт 199 | CLK0 — Dedicated clock input 0 |
| Контакт 200 | CLK1 — Dedicated clock input 1 |
| Контакт 201 | CLK2 — Dedicated clock input 2 |
| Контакт 202 | GND — Ground reference |
| Контакт 203 | VCCINT — Core supply voltage (5V) |
| Контакт 204 | I/O — User I/O pin (bank 8) |
| Контакт 205 | I/O — User I/O pin (bank 8) |
| Контакт 206 | I/O — User I/O pin (bank 8) |
| Контакт 207 | I/O — User I/O pin (bank 8) |
| Контакт 208 | VCCIO — I/O supply voltage (5V) |
Типичное применение
EPF10K10QC208-4N подходит для 6 применениеs: Industrial Control Glue Logic, Legacy Telecom Line Card Interface, Prototype ASIC Emulation, Test & Measurement Instrumentation Front-End, Avionics / Military Legacy Subsystem, Low-Density DSP Pre/Post-Processing.
Industrial Control Glue Logic
The EPF10K10QC208-4N's 576 logic elements and 134 user I/Os are well-suited to industrial glue-logic consolidation, where multiple 74-series TTL chips are replaced by a single programmable device. The 5 V tolerance matches legacy PLC, motor-control, and process-control boards still using 5 V logic without level shifters. With 72 LABs and built-in JTAG (IEEE 1149.1), engineers can integrate address decoding, bus arbitration, and timing-pulse generation into one FPGA while keeping factory-floor test access. The PQFP-208 package is hand-solderable, simplifying low-volume retrofits and field repairs on existing 5 V industrial equipment where the supply rail cannot be changed.
Рекомендуется
Legacy Telecom Line Card Interface
In telecom line cards designed in the late 1990s, the EPF10K10QC208-4N provided 134 user I/Os to interface between T1/E1 framers, time-slot interchangers, and backplane serializers. The 125 MHz Fmax of the -4 speed grade supports 8.192 MHz PCM backplane buses and TDM framing at standard telecom rates. Its 5 V I/O directly drives TTL-level backplanes used in central-office equipment. Embedded 6,144 bits of memory implement small elastic stores and pattern detectors without external SRAM. Engineers can drop this FPGA onto existing 5 V line-card PCBs while maintaining the legacy framing protocol and JTAG in-system test infrastructure familiar to telco field technicians.
Рекомендуется
Prototype ASIC Emulation
The EPF10K10QC208-4N was widely used as a multi-chip ASIC emulator during early product development because its 10K-gate density and SRAM-based configuration allowed rapid design iteration. Each LE contains a 4-input LUT and a programmable register, faithfully modelling gate-array timing. FastTrack Interconnect gives predictable delays independent of routing, helping engineers verify timing closure before committing to an ASIC. The 5 V core and TTL I/Os emulate target ASIC behavior with minimal external circuitry, and the PQFP-208 footprint fits standard prototype sockets. Once the design stabilizes, the bitstream can be ported to a production ASIC fab with confidence, making the EPF10K10 a classic development-platform choice.
Рекомендуется
Test & Measurement Instrumentation Front-End
Test equipment manufacturers chose the EPF10K10QC208-4N for instrument front-ends requiring precise timing control: pattern generators, logic analyzers, and frequency counters. The 125 MHz internal clock drives counter chains and timing comparators at sub-nanosecond resolution when paired with external high-speed comparators. The 134 I/Os handle parallel probe-channel multiplexing, and on-chip EABs implement small look-up tables for measurement calibration curves. The 5 V analog-friendly I/O is also tolerant of legacy probe-conditioning circuits. JTAG boundary-scan simplifies board-level test of populated instruments, and the legacy MAX+PLUS II tool chain preserves long-term design IP for service continuity.
Рекомендуется
Avionics / Military Legacy Subsystem
Avionics and military subsystems built in the 1990s-2000s used the EPF10K10QC208-4N because its 5 V supply, PQFP package, and proven SRAM architecture met DO-254 design assurance objectives for many low-criticality functions. The device handles non-volatile configuration via companion configuration PROMs, allowing cold-start boot in cockpit displays, mission computers, and ground-support equipment. 134 I/Os interface legacy ARINC 429 / MIL-STD-1553 transceivers, and on-chip memory buffers small command/response frames. The package's PQFP format remains hand-reworkable by depot-level maintenance crews, an advantage when field-replaceable units are 20+ years old and not yet scheduled for modernization.
Рекомендуется
Low-Density DSP Pre/Post-Processing
The EPF10K10QC208-4N's 72 LABs and 6,144-bit EAB memory fit small DSP pre- and post-processing tasks: FIR filter coefficient multiplication, FFT butterfly staging, or sample-rate conversion stages feeding a dedicated DSP chip. The -4 speed grade's 125 MHz Fmax supports 16-tap FIR filters at 8 MHz sample rate. EABs serve as coefficient ROM and circular delay-line memory, eliminating external SRAM in compact designs. With 5 V I/O and the PQFP-208 footprint, the FPGA bridges legacy 5 V analog front-ends to modern DSP ASICs or microcontrollers without voltage translation. Designers can prototype signal chains in MAX+PLUS II then port to a fixed ASIC once volume justifies mask costs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для EPF10K10QC208-4N — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | EPF10K10QC208-4 | EPF10K10QC208-3 | EPF10K10AQC208-3 | EPF10K10AQC208-3N | EPF10K10AQC208-2 |
|---|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same | 208-pin PQFP - same |
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Logic Elements | 576 | 576 | 576 | 576 | 576 | 576 |
| Speed Grade | -4 (125 MHz Fmax) | -4 | -3 (slower) | -3 | -3 | -2 (slowest) |
| Total Gates | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 |
| Embedded Memory (bits) | 6,144 | 6,144 | 6,144 | 6,144 | 6,144 | 6,144 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lead Finish | Lead-free (RoHS) | Leaded (non-RoHS) | Leaded | Leaded | Lead-free | Leaded |
| Silicon Revision | Original FLEX 10K | Original FLEX 10K | Original FLEX 10K | A-suffix (newer revision) | A-suffix (newer revision) | A-suffix (newer revision) |
Ключевые отличия
- Highest speed grade within FLEX 10K 208-PQFP family (против EPF10K10QC208-3)
- Lead-free RoHS-compliant terminal finish (против EPF10K10QC208-4)
- Original silicon revision with longest qualification history (против EPF10K10AQC208-3)
- 134 user I/O count maximizes in 208-PQFP FLEX 10K (против EPF10K10TC144-4)
Заметки по проектированию
The EPF10K10QC208-4N requires a clean 5.0 V ±5% supply on VCCINT and VCCIO rails. Estimated core current draw is approximately 100-300 mA active at 125 MHz depending on logic utilization. Decoupling: place one 0.1 µF ceramic capacitor within 5 mm of every VCC pin and bulk 47-100 µF tantalum at the regulator output. SRAM-based configuration means inrush currents during configuration can spike to 500 mA momentarily; ensure regulator has adequate transient response. The 5 V I/O is TTL-compatible but exceeding 5.5 V absolute maximum permanently damages the device - add TVS diodes on board-edge connectors.
The 208-pin PQFP package has 0.5 mm lead pitch and 28 mm × 28 mm body. Recommended footprint: 0.30 mm wide pads with 0.10 mm solder mask dam. Trace escape: use 0.15 mm/0.20 mm traces fanning out from inner pads. For high-speed signals, maintain 50 Ω controlled impedance with reference plane on layer 2. The PQFP package does not have an exposed pad - thermal dissipation is through peripheral leads and copper pours on top/bottom layers. Estimated: at 0.5 W dissipation with 1 square inch copper pour, junction-to-ambient resistance is approximately 35-45 C/W.
Common pitfalls with the EPF10K10QC208-4N: (1) configuration PROMs are required - the device is SRAM-based and loses configuration on power-down; use EPC2 or EPC1 series configuration PROMs in standard FLEX 10K reference schematics. (2) JTAG chain must include proper buffering for board-level test access. (3) The MAX+PLUS II tool chain is legacy - design bitstreams generated by MAX+PLUS II may not load into Quartus-targeted configuration memory. (4) Mixing -3, -4, and A-prefix silicon in the same design works but bitstream timing files should be regenerated for the exact speed grade. (5) PQFP leads are fragile - use proper re-work profiles (220C peak for lead-free, 240C max dwell time).
Signal integrity layout notes: keep dedicated clock pins (CLK0/CLK1/CLK2) traces short and routed away from I/O switching signals; the FLEX 10K has dedicated low-skew clock distribution trees that are most effective when fed by clean clocks. Configuration signals (DCLK, DATA0, nCONFIG, nSTATUS, CONF_DONE) should be routed as a bus to keep skew below 2 ns; longer traces can cause configuration failures. JTAG signals (TCK, TMS, TDI, TDO) require 10-100 kΩ pull-ups on TMS, TDI, nCONFIG for reliable boundary-scan operation. Bank VCCIO pins may all be tied together at 5 V or split per bank; FLEX 10K allows mixed-voltage I/O but only on a per-bank basis.
Информация о соответствии
'N' suffix denotes lead-free / RoHS-compliant terminal finish per Altera/Intel naming convention. Not AEC-Q100 qualified (this is a legacy industrial/commercial part, not automotive-grade). Specific halogen-free status not stated in datasheet summary.
