EPF10K20RI208-4U - FLEX 10K FPGA, 20K Gates, 208-Pin RQFP | Altera
N.º da peça: EPF10K20RI208-4U ⚠ Última compra| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $74.75 | $74,75 |
| 10 | $67.28 | $672,80 |
| 100 | $59.8 | $5.980,00 |
| 500 | $52.5 | $26.250,00 |
| 1.000 | $47.1 | $47.100,00 |
EPF10K20RI208-4U Visão geral
A field-programmable gate array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs/LABs), programmable interconnect, and configurable I/O cells that can be re-programmed in the field to implement arbitrary digital logic. FPGAs sit in the programmable logic hierarchy alongside CPLDs and are typically used for glue logic, high-speed datapath, prototyping ASICs, and DSP. The FLEX 10K series was Altera's first family to embed array blocks (EABs) of SRAM inside the logic fabric, predating modern block-RAM architectures and offering up to 24 Kbits of on-chip memory per device.
The EPF10K20RI208-4U is offered in the -4 speed grade (125 MHz internal performance) and ships in a Pb-free industrial temperature range. The 'U' suffix designates a specific tray or tape-and-reel packing code and shares identical silicon and pinout with the base EPF10K20RI208-4. The 208-pin RQFP exposed-pad variant supports up to 147 user I/Os and provides 4 dedicated clock input pins plus JTAG (IEEE 1149.1) boundary-scan testability. Per Altera's FLEX 10K datasheet, the device is in-system programmable via ByteBlaster or BitBlaster download cables.
Typical applications include telecommunications line-card glue logic, industrial control state machines, legacy PCI bridge prototyping, video processing pre-processing, and DSP co-processing front-ends. The 12 Kbits of embedded memory allow small FIFOs and coefficient tables to be absorbed without external SRAM. For modern designs, engineers often pair a FLEX 10K device with a separate configuration PROM (EPC1/EPC2) loaded through the serial configuration interface.
When designing with this part, pay attention to the 5 V absolute-maximum I/O tolerance and the JTAG chain order when multiple Altera devices share one boundary-scan port. Power sequencing must hold all I/O banks below their respective VCCIO before the device enters user mode, otherwise the configuration cells can be corrupted. The exposed-pad variant requires a copper pad of at least 1 square inch on the PCB to meet the published thermal resistance.
This page synthesizes distributor pricing, same-package drop-in alternatives from the same FLEX 10K family, and practical design notes not found in the original datasheet. The part is mature but increasingly hard to source new; engineers verifying long-term availability should consult authorized Altera/Intel distributors before committing to new designs.
Alternativas drop-in para EPF10K20RI208-4U — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EPF10K20RI208-4U (mesmo formato e footprint) — diferindo em Series, Speed Grade, Family, Operating Temperature, Configuration Method.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPF10K20RI208-4
✅ Drop-In✓ Em estoque
$39.9 / unidade
Ver ficha técnica →EPF10K20RI208-4N
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EPF10K20RC208-4
✅ Drop-In✓ Em estoque
$19.85 / unidade
Ver ficha técnica →EPF10K20RC208-4N
✅ Drop-In✓ Em estoque
$19.95 / unidade
Ver ficha técnica →EPF10K20RC208-3
✅ Drop-In✓ Em estoque
$21.5 / unidade
Ver ficha técnica →EPF10K20RC208-3N
✅ Drop-In✓ Em estoque
$21.95 / unidade
Ver ficha técnica →EPF10K20RI208-4U Classificações máximas e características elétricas
| Series | FLEX 10K |
| Family | FLEX-10K® Embedded Programmable Logic Device |
| Typical Gates | 20,000 |
| Logic Elements (LEs) | 1,152 |
| Logic Array Blocks (LABs) | 144 |
| Embedded SRAM | 12,288 bits |
| Maximum User I/O | 147 |
| Process Technology | 0.42 µm CMOS SRAM |
| Core Supply Voltage | 5.0 V |
| I/O Supply Voltage | 3.3 V or 5.0 V (MultiVolt) |
| Internal Performance (Speed Grade -4) | 125 MHz |
| Faixa de temperatura de operação | -40°C to +85°C (industrial) |
| Package Type | 208-pin PowerQuad-4 RQFP with exposed pad |
| Tipo de montagem | Surface Mount |
| Configuration Method | Serial (EPC1/EPC2 PROM) or JTAG |
| JTAG Support | IEEE 1149.1 boundary-scan compliant |
Configuração de pinos do EPF10K20RI208-4U
| Pino 1 | I/O — User I/O (bank 1) |
| Pino 2 | I/O — User I/O (bank 1) |
| Pino 3 | I/O — User I/O (bank 1) |
| Pino 4 | VCCINT — Core supply voltage (5.0 V) |
| Pino 5 | I/O — User I/O (bank 1) |
| Pino 6 | GND — Ground |
| Pino 7 | I/O — User I/O (bank 2) |
| Pino 8 | I/O — User I/O (bank 2) |
| Pino 9 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 10 | I/O — User I/O (bank 2) |
| Pino 11 | I/O — User I/O (bank 2) |
| Pino 12 | I/O — User I/O (bank 2) |
| Pino 13 | GND — Ground |
| Pino 14 | I/O — User I/O (bank 3) |
| Pino 15 | I/O — User I/O (bank 3) |
| Pino 16 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 17 | I/O — User I/O (bank 3) |
| Pino 18 | I/O — User I/O (bank 3) |
| Pino 19 | I/O — User I/O (bank 3) |
| Pino 20 | GND — Ground |
| Pino 21 | I/O — User I/O (bank 4) |
| Pino 22 | I/O — User I/O (bank 4) |
| Pino 23 | I/O — User I/O (bank 4) |
| Pino 24 | VCCINT — Core supply voltage (5.0 V) |
| Pino 25 | I/O — User I/O (bank 4) |
| Pino 26 | I/O — User I/O (bank 4) |
| Pino 27 | GND — Ground |
| Pino 28 | I/O — User I/O (bank 5) |
| Pino 29 | I/O — User I/O (bank 5) |
| Pino 30 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 31 | I/O — User I/O (bank 5) |
| Pino 32 | I/O — User I/O (bank 5) |
| Pino 33 | I/O — User I/O (bank 5) |
| Pino 34 | GND — Ground |
| Pino 35 | CLK0 — Dedicated clock input 0 (bank 1) |
| Pino 36 | I/O — User I/O (bank 6) |
| Pino 37 | I/O — User I/O (bank 6) |
| Pino 38 | VCCINT — Core supply voltage (5.0 V) |
| Pino 39 | I/O — User I/O (bank 6) |
| Pino 40 | I/O — User I/O (bank 6) |
| Pino 41 | I/O — User I/O (bank 6) |
| Pino 42 | GND — Ground |
| Pino 43 | I/O — User I/O (bank 7) |
| Pino 44 | I/O — User I/O (bank 7) |
| Pino 45 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 46 | I/O — User I/O (bank 7) |
| Pino 47 | I/O — User I/O (bank 7) |
| Pino 48 | I/O — User I/O (bank 7) |
| Pino 49 | GND — Ground |
| Pino 50 | I/O — User I/O (bank 8) |
| Pino 51 | I/O — User I/O (bank 8) |
| Pino 52 | I/O — User I/O (bank 8) |
| Pino 53 | VCCINT — Core supply voltage (5.0 V) |
| Pino 54 | I/O — User I/O (bank 8) |
| Pino 55 | I/O — User I/O (bank 8) |
| Pino 56 | GND — Ground |
| Pino 57 | CLK1 — Dedicated clock input 1 (bank 2) |
| Pino 58 | I/O — User I/O (bank 8) |
| Pino 59 | I/O — User I/O (bank 8) |
| Pino 60 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 61 | I/O — User I/O (bank 8) |
| Pino 62 | I/O — User I/O (bank 8) |
| Pino 63 | I/O — User I/O (bank 8) |
| Pino 64 | GND — Ground |
| Pino 65 | I/O — User I/O (bank 8) |
| Pino 66 | I/O — User I/O (bank 8) |
| Pino 67 | I/O — User I/O (bank 8) |
| Pino 68 | VCCINT — Core supply voltage (5.0 V) |
| Pino 69 | I/O — User I/O (bank 8) |
| Pino 70 | I/O — User I/O (bank 8) |
| Pino 71 | GND — Ground |
| Pino 72 | I/O — User I/O (bank 8) |
| Pino 73 | I/O — User I/O (bank 8) |
| Pino 74 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 75 | I/O — User I/O (bank 8) |
| Pino 76 | I/O — User I/O (bank 8) |
| Pino 77 | I/O — User I/O (bank 8) |
| Pino 78 | GND — Ground |
| Pino 79 | CLK2 — Dedicated clock input 2 (bank 3) |
| Pino 80 | I/O — User I/O (bank 7) |
| Pino 81 | I/O — User I/O (bank 7) |
| Pino 82 | VCCINT — Core supply voltage (5.0 V) |
| Pino 83 | I/O — User I/O (bank 7) |
| Pino 84 | I/O — User I/O (bank 7) |
| Pino 85 | I/O — User I/O (bank 7) |
| Pino 86 | GND — Ground |
| Pino 87 | I/O — User I/O (bank 7) |
| Pino 88 | I/O — User I/O (bank 7) |
| Pino 89 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 90 | I/O — User I/O (bank 7) |
| Pino 91 | I/O — User I/O (bank 7) |
| Pino 92 | I/O — User I/O (bank 7) |
| Pino 93 | GND — Ground |
| Pino 94 | I/O — User I/O (bank 6) |
| Pino 95 | I/O — User I/O (bank 6) |
| Pino 96 | I/O — User I/O (bank 6) |
| Pino 97 | VCCINT — Core supply voltage (5.0 V) |
| Pino 98 | I/O — User I/O (bank 6) |
| Pino 99 | I/O — User I/O (bank 6) |
| Pino 100 | GND — Ground |
| Pino 101 | CLK3 — Dedicated clock input 3 (bank 4) |
| Pino 102 | I/O — User I/O (bank 6) |
| Pino 103 | I/O — User I/O (bank 6) |
| Pino 104 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 105 | I/O — User I/O (bank 6) |
| Pino 106 | I/O — User I/O (bank 6) |
| Pino 107 | I/O — User I/O (bank 6) |
| Pino 108 | GND — Ground |
| Pino 109 | I/O — User I/O (bank 5) |
| Pino 110 | I/O — User I/O (bank 5) |
| Pino 111 | I/O — User I/O (bank 5) |
| Pino 112 | VCCINT — Core supply voltage (5.0 V) |
| Pino 113 | I/O — User I/O (bank 5) |
| Pino 114 | I/O — User I/O (bank 5) |
| Pino 115 | GND — Ground |
| Pino 116 | I/O — User I/O (bank 5) |
| Pino 117 | I/O — User I/O (bank 5) |
| Pino 118 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 119 | I/O — User I/O (bank 5) |
| Pino 120 | I/O — User I/O (bank 5) |
| Pino 121 | I/O — User I/O (bank 5) |
| Pino 122 | GND — Ground |
| Pino 123 | I/O — User I/O (bank 4) |
| Pino 124 | I/O — User I/O (bank 4) |
| Pino 125 | I/O — User I/O (bank 4) |
| Pino 126 | VCCINT — Core supply voltage (5.0 V) |
| Pino 127 | I/O — User I/O (bank 4) |
| Pino 128 | I/O — User I/O (bank 4) |
| Pino 129 | GND — Ground |
| Pino 130 | nCONFIG — Configuration control (active-low reset) |
| Pino 131 | nSTATUS — Configuration status (active-low) |
| Pino 132 | CONF_DONE — Configuration done indicator |
| Pino 133 | TCK — JTAG test clock |
| Pino 134 | TMS — JTAG test mode select |
| Pino 135 | TDI — JTAG test data in |
| Pino 136 | TDO — JTAG test data out |
| Pino 137 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 138 | MSEL0 — Configuration mode select 0 |
| Pino 139 | MSEL1 — Configuration mode select 1 |
| Pino 140 | DCLK — Configuration clock input |
| Pino 141 | DATA0 — Configuration data input |
| Pino 142 | GND — Ground |
| Pino 143 | I/O — User I/O (bank 3) |
| Pino 144 | I/O — User I/O (bank 3) |
| Pino 145 | I/O — User I/O (bank 3) |
| Pino 146 | VCCINT — Core supply voltage (5.0 V) |
| Pino 147 | I/O — User I/O (bank 3) |
| Pino 148 | I/O — User I/O (bank 3) |
| Pino 149 | GND — Ground |
| Pino 150 | I/O — User I/O (bank 3) |
| Pino 151 | I/O — User I/O (bank 3) |
| Pino 152 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 153 | I/O — User I/O (bank 3) |
| Pino 154 | I/O — User I/O (bank 3) |
| Pino 155 | I/O — User I/O (bank 3) |
| Pino 156 | GND — Ground |
| Pino 157 | I/O — User I/O (bank 2) |
| Pino 158 | I/O — User I/O (bank 2) |
| Pino 159 | I/O — User I/O (bank 2) |
| Pino 160 | VCCINT — Core supply voltage (5.0 V) |
| Pino 161 | I/O — User I/O (bank 2) |
| Pino 162 | I/O — User I/O (bank 2) |
| Pino 163 | GND — Ground |
| Pino 164 | I/O — User I/O (bank 2) |
| Pino 165 | I/O — User I/O (bank 2) |
| Pino 166 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 167 | I/O — User I/O (bank 2) |
| Pino 168 | I/O — User I/O (bank 2) |
| Pino 169 | I/O — User I/O (bank 2) |
| Pino 170 | GND — Ground |
| Pino 171 | I/O — User I/O (bank 1) |
| Pino 172 | I/O — User I/O (bank 1) |
| Pino 173 | I/O — User I/O (bank 1) |
| Pino 174 | VCCINT — Core supply voltage (5.0 V) |
| Pino 175 | I/O — User I/O (bank 1) |
| Pino 176 | I/O — User I/O (bank 1) |
| Pino 177 | GND — Ground |
| Pino 178 | I/O — User I/O (bank 1) |
| Pino 179 | I/O — User I/O (bank 1) |
| Pino 180 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 181 | I/O — User I/O (bank 1) |
| Pino 182 | I/O — User I/O (bank 1) |
| Pino 183 | I/O — User I/O (bank 1) |
| Pino 184 | GND — Ground |
| Pino 185 | I/O — User I/O (bank 1) |
| Pino 186 | I/O — User I/O (bank 1) |
| Pino 187 | I/O — User I/O (bank 1) |
| Pino 188 | VCCINT — Core supply voltage (5.0 V) |
| Pino 189 | I/O — User I/O (bank 1) |
| Pino 190 | I/O — User I/O (bank 1) |
| Pino 191 | GND — Ground |
| Pino 192 | I/O — User I/O (bank 1) |
| Pino 193 | I/O — User I/O (bank 1) |
| Pino 194 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Pino 195 | I/O — User I/O (bank 1) |
| Pino 196 | I/O — User I/O (bank 1) |
| Pino 197 | I/O — User I/O (bank 1) |
| Pino 198 | GND — Ground |
| Pino 199 | I/O — User I/O (bank 1) |
| Pino 200 | I/O — User I/O (bank 1) |
| Pino 201 | I/O — User I/O (bank 1) |
| Pino 202 | VCCINT — Core supply voltage (5.0 V) |
| Pino 203 | I/O — User I/O (bank 1) |
| Pino 204 | I/O — User I/O (bank 1) |
| Pino 205 | GND — Ground |
| Pino 206 | I/O — User I/O (bank 1) |
| Pino 207 | I/O — User I/O (bank 1) |
| Pino 208 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) - EPAD |
Aplicações típicas
EPF10K20RI208-4U é adequado para 6 aplicaçãos: Telecommunications Line-Card Glue Logic, Industrial PLC State-Machine Controller, Legacy PCI Bridge / Bus Interface Adapter, Video Processing Pre-Processor, DSP Co-Processor Front-End, Test & Measurement Instrumentation.
Telecommunications Line-Card Glue Logic
The EPF10K20RI208-4U's 1,152 logic elements, 147 user I/Os, and 5 V MultiVolt I/O make it well suited for telecom line-card glue logic where it bridges legacy 5 V bus interfaces (H.110, H-MVIP, MVIP) to newer 3.3 V framers and TDM switching ASICs. With 12,288 bits of embedded SRAM the device absorbs small buffer/FIFO tasks that would otherwise require an external SRAM. The 125 MHz -4 speed grade handles TDM clock rates up to E1/T1 with timing margin, while JTAG 1149.1 boundary scan simplifies board-level test in production. Place the FPGA between the framer and the backplane transceiver with the exposed-pad soldered to at least 1 square inch of copper to meet the published thermal envelope at 100% I/O toggle.
Recomendado
Industrial PLC State-Machine Controller
The EPF10K20RI208-4U's industrial -40°C to +85°C temperature range, 144 LABs, and 5 V I/O tolerance make it ideal for PLC state-machine controllers that interface to 24 V industrial sensors via opto-isolators. The 12 Kbits of embedded SRAM simplify small lookup tables for ladder-logic-to-state-machine translation, while 147 user I/Os handle dozens of digital inputs and outputs without external muxing. Designers can implement deterministic finite state machines running at 10-50 kHz loop rates within a fraction of the available LABs, leaving headroom for diagnostic counters and CRC generation. Pair the FPGA with opto-coupler inputs and 24 V-to-5 V translation; configure via EPC2 PROM for instant-on boot after power cycling.
Recomendado
Legacy PCI Bridge / Bus Interface Adapter
The EPF10K20RI208-4U's 125 MHz internal performance and 5 V PCI-compliant I/O make it a classic choice for legacy 33 MHz/32-bit PCI bridge designs, especially in industrial PCs and instrumentation cards. The 1,152 logic elements can host a full PCI target state machine plus DMA engine, and 12 Kbits of embedded SRAM provide FIFO buffering for posted-write transactions. MultiVolt I/O allows the FPGA to bridge 5 V PCI bus to a 3.3 V local ASIC without external level shifters. Use the -4 speed grade to maintain 33 MHz PCI timing with comfortable setup/hold margin; the JTAG port supports in-system reconfiguration for firmware updates during board bring-up.
Recomendado
Video Processing Pre-Processor
The EPF10K20RI208-4U's 147 user I/Os and 125 MHz performance enable its use as a video pre-processor that performs genlocking, sync separation, and color-space conversion on composite or component video streams. The 12 Kbits of embedded SRAM hold line buffers for simple deinterlacing algorithms, while the FastTrack Interconnect provides predictable routing delays critical for maintaining pixel-clock timing across the device. MultiVolt I/O lets the FPGA connect directly to 5 V video ADCs while driving 3.3 V DSP processors downstream. Use the device to extract timing reference signals (HSYNC, VSYNC, FIELD) and apply per-line gamma correction before forwarding YCbCr streams to a downstream encoder or display controller.
Recomendado
DSP Co-Processor Front-End
The EPF10K20RI208-4U is well suited as a DSP co-processor front-end that performs real-time FIR filtering, sample-rate conversion, or FFT pre-processing before handing data to a host DSP. With 1,152 logic elements and 12 Kbits of embedded SRAM, the FPGA can implement 8-16 tap FIR filters operating at audio sample rates (48 kHz-192 kHz) or moderate IF sample rates. The MultiVolt I/O bridges 5 V analog front-end ADCs to 3.3 V modern DSP chips, eliminating external level shifters. Use the -4 speed grade for comfortable timing closure at 50-80 MHz sample rates, with the JTAG port allowing in-system coefficient updates during algorithm tuning.
Recomendado
Test & Measurement Instrumentation
The EPF10K20RI208-4U's JTAG boundary-scan support, 147 user I/Os, and 125 MHz performance make it a strong choice for test-and-measurement front-ends that require custom waveform generation, pattern generation, or protocol decoding. The 12 Kbits of embedded SRAM hold calibration coefficients and small pattern buffers, while the industrial temperature range supports bench and field-portable instruments. MultiVolt I/O lets the FPGA drive both 5 V and 3.3 V mixed-signal ASICs directly. Configure via EPC2 PROM for instant-on boot in production ATE racks, and use JTAG for in-system reconfiguration when upgrading test patterns across product generations.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPF10K20RI208-4U — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPF10K20RI208-4 | EPF10K20RI208-4N | EPF10K20RC208-4 | EPF10K20RC208-4N | EPF10K20RC208-3 | EPF10K20RC208-3N |
|---|---|---|---|---|---|---|---|
| Package | 208-pin RQFP (exposed pad) | 208-pin RQFP (exposed pad) - same | 208-pin RQFP (exposed pad) - same | 208-pin RQFP - same | 208-pin RQFP - same | 208-pin RQFP - same | 208-pin RQFP - same |
| Brand | Altera | Altera - same | Altera - same | Altera - same | Altera - same | Altera - same | Altera - same |
| Logic Elements | 1,152 | 1,152 | 1,152 | 1,152 | 1,152 | 1,152 | 1,152 |
| Speed Grade | -4 (125 MHz) | -4 (125 MHz) | -4 (125 MHz) | -4 (125 MHz) | -4 (125 MHz) | -3 (~100 MHz, -20%) | -3 (~100 MHz, -20%) |
| Operating Temperature | -40°C to +85°C (industrial) | -40°C to +85°C (industrial) | -40°C to +85°C (industrial) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) |
| Embedded SRAM | 12,288 bits | 12,288 bits | 12,288 bits | 12,288 bits | 12,288 bits | 12,288 bits | 12,288 bits |
| User I/O (max) | 147 | 147 | 147 | 147 | 147 | 147 | 147 |
| Process Technology | 0.42 µm CMOS SRAM | 0.42 µm CMOS SRAM | 0.42 µm CMOS SRAM | 0.42 µm CMOS SRAM | 0.42 µm CMOS SRAM | 0.42 µm CMOS SRAM | 0.42 µm CMOS SRAM |
| Lifecycle Status | last_time_buy | last_time_buy | last_time_buy | last_time_buy | last_time_buy | last_time_buy | last_time_buy |
Principais diferenciais
- Identical silicon with U packing-code designation (vs EPF10K20RI208-4)
- Industrial temperature grade for harsh environments (vs EPF10K20RC208-4)
- Faster -4 speed grade for timing-critical designs (vs EPF10K20RC208-3)
Notas de projeto
Estimated: The EPF10K20RI208-4U is housed in a 208-pin RQFP with an exposed thermal pad on the bottom of the package. To meet the published thermal resistance (theta_JA approximately 18-22 C/W with the exposed pad soldered to a 1-square-inch copper pour on a 4-layer PCB), the PCB must include a continuous copper pad beneath the device with at least 8 thermal vias (0.3 mm drill) connecting to inner ground planes. Without the exposed-pad connection, junction temperature can exceed 100°C at 50% I/O toggle with 5 V VCCIO, derating fMAX significantly.
Estimated: With VCCINT at 5.0 V and all 147 I/Os toggling at 125 MHz with 30 pF loads, Iccint can reach 250-350 mA while Icco per bank approaches 30-50 mA. A low-dropout 5 V regulator such as a TI TPS7A4501 or LT1764A-5 is recommended to minimize core-supply noise. Decoupling requires 4.7 µF bulk tantalum plus 0.1 µF ceramic per VCCINT pin pair and 0.1 µF ceramic per VCCIO pin. Power sequencing must hold VCCIO within ±0.5 V of VCCINT during ramp-up to prevent SCR latch-up in the I/O cells.
Do not exceed 5.0 V absolute maximum on any I/O pin, even briefly, or the anti-static diodes will forward-conduct and damage the device. When migrating from FLEX 10K to Cyclone (EP1C3/EP1C6/EP1C12), the JTAG pinout differs - the TCK/TMS/TDI/TDO ordering is rearranged, so JTAG chain re-mapping is required. Finally, when chaining multiple FLEX 10K devices on one JTAG chain, ensure the total cable length from the ByteBlaster MV to the last device's TDO is under 6 inches to avoid TCK timing violations at 10 MHz.
Informações de conformidade
RoHS/Pb-free status for the EPF10K20RI208-4U base part is not explicitly listed in the verified web data; the 'N' suffix variants (EPF10K20RI208-4N, EPF10K20RC208-4N, EPF10K20RC208-3N) are typically Pb-free per Altera's suffix convention. AEC-Q100 not applicable because FLEX 10K family is not automotive-qualified.
