EPF10K20RI208-4U - FLEX 10K FPGA, 20K Gates, 208-Pin RQFP | Altera
MPN: EPF10K20RI208-4U ⚠ Lần mua cuốiEPF10K20RI208-4U Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho EPF10K20RI208-4U — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPF10K20RI208-4U (cùng hình factor và footprint) — khác nhau ở Series, Speed Grade, Family, Operating Temperature, Configuration Method.
EPF10K20RI208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF10K20RI208-4N
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EPF10K20RC208-4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF10K20RC208-4N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF10K20RC208-3
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF10K20RC208-3N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPF10K20RI208-4U Tỷ lệ tối đa & tính chất điện
| 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 |
| Khoảng nhiệt độ hoạt động | -40°C to +85°C (industrial) |
| Package Type | 208-pin PowerQuad-4 RQFP with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Configuration Method | Serial (EPC1/EPC2 PROM) or JTAG |
| JTAG Support | IEEE 1149.1 boundary-scan compliant |
Cấu hình chân EPF10K20RI208-4U
| Chân 1 | I/O — User I/O (bank 1) |
| Chân 2 | I/O — User I/O (bank 1) |
| Chân 3 | I/O — User I/O (bank 1) |
| Chân 4 | VCCINT — Core supply voltage (5.0 V) |
| Chân 5 | I/O — User I/O (bank 1) |
| Chân 6 | GND — Ground |
| Chân 7 | I/O — User I/O (bank 2) |
| Chân 8 | I/O — User I/O (bank 2) |
| Chân 9 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 10 | I/O — User I/O (bank 2) |
| Chân 11 | I/O — User I/O (bank 2) |
| Chân 12 | I/O — User I/O (bank 2) |
| Chân 13 | GND — Ground |
| Chân 14 | I/O — User I/O (bank 3) |
| Chân 15 | I/O — User I/O (bank 3) |
| Chân 16 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 17 | I/O — User I/O (bank 3) |
| Chân 18 | I/O — User I/O (bank 3) |
| Chân 19 | I/O — User I/O (bank 3) |
| Chân 20 | GND — Ground |
| Chân 21 | I/O — User I/O (bank 4) |
| Chân 22 | I/O — User I/O (bank 4) |
| Chân 23 | I/O — User I/O (bank 4) |
| Chân 24 | VCCINT — Core supply voltage (5.0 V) |
| Chân 25 | I/O — User I/O (bank 4) |
| Chân 26 | I/O — User I/O (bank 4) |
| Chân 27 | GND — Ground |
| Chân 28 | I/O — User I/O (bank 5) |
| Chân 29 | I/O — User I/O (bank 5) |
| Chân 30 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 31 | I/O — User I/O (bank 5) |
| Chân 32 | I/O — User I/O (bank 5) |
| Chân 33 | I/O — User I/O (bank 5) |
| Chân 34 | GND — Ground |
| Chân 35 | CLK0 — Dedicated clock input 0 (bank 1) |
| Chân 36 | I/O — User I/O (bank 6) |
| Chân 37 | I/O — User I/O (bank 6) |
| Chân 38 | VCCINT — Core supply voltage (5.0 V) |
| Chân 39 | I/O — User I/O (bank 6) |
| Chân 40 | I/O — User I/O (bank 6) |
| Chân 41 | I/O — User I/O (bank 6) |
| Chân 42 | GND — Ground |
| Chân 43 | I/O — User I/O (bank 7) |
| Chân 44 | I/O — User I/O (bank 7) |
| Chân 45 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 46 | I/O — User I/O (bank 7) |
| Chân 47 | I/O — User I/O (bank 7) |
| Chân 48 | I/O — User I/O (bank 7) |
| Chân 49 | GND — Ground |
| Chân 50 | I/O — User I/O (bank 8) |
| Chân 51 | I/O — User I/O (bank 8) |
| Chân 52 | I/O — User I/O (bank 8) |
| Chân 53 | VCCINT — Core supply voltage (5.0 V) |
| Chân 54 | I/O — User I/O (bank 8) |
| Chân 55 | I/O — User I/O (bank 8) |
| Chân 56 | GND — Ground |
| Chân 57 | CLK1 — Dedicated clock input 1 (bank 2) |
| Chân 58 | I/O — User I/O (bank 8) |
| Chân 59 | I/O — User I/O (bank 8) |
| Chân 60 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 61 | I/O — User I/O (bank 8) |
| Chân 62 | I/O — User I/O (bank 8) |
| Chân 63 | I/O — User I/O (bank 8) |
| Chân 64 | GND — Ground |
| Chân 65 | I/O — User I/O (bank 8) |
| Chân 66 | I/O — User I/O (bank 8) |
| Chân 67 | I/O — User I/O (bank 8) |
| Chân 68 | VCCINT — Core supply voltage (5.0 V) |
| Chân 69 | I/O — User I/O (bank 8) |
| Chân 70 | I/O — User I/O (bank 8) |
| Chân 71 | GND — Ground |
| Chân 72 | I/O — User I/O (bank 8) |
| Chân 73 | I/O — User I/O (bank 8) |
| Chân 74 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 75 | I/O — User I/O (bank 8) |
| Chân 76 | I/O — User I/O (bank 8) |
| Chân 77 | I/O — User I/O (bank 8) |
| Chân 78 | GND — Ground |
| Chân 79 | CLK2 — Dedicated clock input 2 (bank 3) |
| Chân 80 | I/O — User I/O (bank 7) |
| Chân 81 | I/O — User I/O (bank 7) |
| Chân 82 | VCCINT — Core supply voltage (5.0 V) |
| Chân 83 | I/O — User I/O (bank 7) |
| Chân 84 | I/O — User I/O (bank 7) |
| Chân 85 | I/O — User I/O (bank 7) |
| Chân 86 | GND — Ground |
| Chân 87 | I/O — User I/O (bank 7) |
| Chân 88 | I/O — User I/O (bank 7) |
| Chân 89 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 90 | I/O — User I/O (bank 7) |
| Chân 91 | I/O — User I/O (bank 7) |
| Chân 92 | I/O — User I/O (bank 7) |
| Chân 93 | GND — Ground |
| Chân 94 | I/O — User I/O (bank 6) |
| Chân 95 | I/O — User I/O (bank 6) |
| Chân 96 | I/O — User I/O (bank 6) |
| Chân 97 | VCCINT — Core supply voltage (5.0 V) |
| Chân 98 | I/O — User I/O (bank 6) |
| Chân 99 | I/O — User I/O (bank 6) |
| Chân 100 | GND — Ground |
| Chân 101 | CLK3 — Dedicated clock input 3 (bank 4) |
| Chân 102 | I/O — User I/O (bank 6) |
| Chân 103 | I/O — User I/O (bank 6) |
| Chân 104 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 105 | I/O — User I/O (bank 6) |
| Chân 106 | I/O — User I/O (bank 6) |
| Chân 107 | I/O — User I/O (bank 6) |
| Chân 108 | GND — Ground |
| Chân 109 | I/O — User I/O (bank 5) |
| Chân 110 | I/O — User I/O (bank 5) |
| Chân 111 | I/O — User I/O (bank 5) |
| Chân 112 | VCCINT — Core supply voltage (5.0 V) |
| Chân 113 | I/O — User I/O (bank 5) |
| Chân 114 | I/O — User I/O (bank 5) |
| Chân 115 | GND — Ground |
| Chân 116 | I/O — User I/O (bank 5) |
| Chân 117 | I/O — User I/O (bank 5) |
| Chân 118 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 119 | I/O — User I/O (bank 5) |
| Chân 120 | I/O — User I/O (bank 5) |
| Chân 121 | I/O — User I/O (bank 5) |
| Chân 122 | GND — Ground |
| Chân 123 | I/O — User I/O (bank 4) |
| Chân 124 | I/O — User I/O (bank 4) |
| Chân 125 | I/O — User I/O (bank 4) |
| Chân 126 | VCCINT — Core supply voltage (5.0 V) |
| Chân 127 | I/O — User I/O (bank 4) |
| Chân 128 | I/O — User I/O (bank 4) |
| Chân 129 | GND — Ground |
| Chân 130 | nCONFIG — Configuration control (active-low reset) |
| Chân 131 | nSTATUS — Configuration status (active-low) |
| Chân 132 | CONF_DONE — Configuration done indicator |
| Chân 133 | TCK — JTAG test clock |
| Chân 134 | TMS — JTAG test mode select |
| Chân 135 | TDI — JTAG test data in |
| Chân 136 | TDO — JTAG test data out |
| Chân 137 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 138 | MSEL0 — Configuration mode select 0 |
| Chân 139 | MSEL1 — Configuration mode select 1 |
| Chân 140 | DCLK — Configuration clock input |
| Chân 141 | DATA0 — Configuration data input |
| Chân 142 | GND — Ground |
| Chân 143 | I/O — User I/O (bank 3) |
| Chân 144 | I/O — User I/O (bank 3) |
| Chân 145 | I/O — User I/O (bank 3) |
| Chân 146 | VCCINT — Core supply voltage (5.0 V) |
| Chân 147 | I/O — User I/O (bank 3) |
| Chân 148 | I/O — User I/O (bank 3) |
| Chân 149 | GND — Ground |
| Chân 150 | I/O — User I/O (bank 3) |
| Chân 151 | I/O — User I/O (bank 3) |
| Chân 152 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 153 | I/O — User I/O (bank 3) |
| Chân 154 | I/O — User I/O (bank 3) |
| Chân 155 | I/O — User I/O (bank 3) |
| Chân 156 | GND — Ground |
| Chân 157 | I/O — User I/O (bank 2) |
| Chân 158 | I/O — User I/O (bank 2) |
| Chân 159 | I/O — User I/O (bank 2) |
| Chân 160 | VCCINT — Core supply voltage (5.0 V) |
| Chân 161 | I/O — User I/O (bank 2) |
| Chân 162 | I/O — User I/O (bank 2) |
| Chân 163 | GND — Ground |
| Chân 164 | I/O — User I/O (bank 2) |
| Chân 165 | I/O — User I/O (bank 2) |
| Chân 166 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 167 | I/O — User I/O (bank 2) |
| Chân 168 | I/O — User I/O (bank 2) |
| Chân 169 | I/O — User I/O (bank 2) |
| Chân 170 | GND — Ground |
| Chân 171 | I/O — User I/O (bank 1) |
| Chân 172 | I/O — User I/O (bank 1) |
| Chân 173 | I/O — User I/O (bank 1) |
| Chân 174 | VCCINT — Core supply voltage (5.0 V) |
| Chân 175 | I/O — User I/O (bank 1) |
| Chân 176 | I/O — User I/O (bank 1) |
| Chân 177 | GND — Ground |
| Chân 178 | I/O — User I/O (bank 1) |
| Chân 179 | I/O — User I/O (bank 1) |
| Chân 180 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 181 | I/O — User I/O (bank 1) |
| Chân 182 | I/O — User I/O (bank 1) |
| Chân 183 | I/O — User I/O (bank 1) |
| Chân 184 | GND — Ground |
| Chân 185 | I/O — User I/O (bank 1) |
| Chân 186 | I/O — User I/O (bank 1) |
| Chân 187 | I/O — User I/O (bank 1) |
| Chân 188 | VCCINT — Core supply voltage (5.0 V) |
| Chân 189 | I/O — User I/O (bank 1) |
| Chân 190 | I/O — User I/O (bank 1) |
| Chân 191 | GND — Ground |
| Chân 192 | I/O — User I/O (bank 1) |
| Chân 193 | I/O — User I/O (bank 1) |
| Chân 194 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) |
| Chân 195 | I/O — User I/O (bank 1) |
| Chân 196 | I/O — User I/O (bank 1) |
| Chân 197 | I/O — User I/O (bank 1) |
| Chân 198 | GND — Ground |
| Chân 199 | I/O — User I/O (bank 1) |
| Chân 200 | I/O — User I/O (bank 1) |
| Chân 201 | I/O — User I/O (bank 1) |
| Chân 202 | VCCINT — Core supply voltage (5.0 V) |
| Chân 203 | I/O — User I/O (bank 1) |
| Chân 204 | I/O — User I/O (bank 1) |
| Chân 205 | GND — Ground |
| Chân 206 | I/O — User I/O (bank 1) |
| Chân 207 | I/O — User I/O (bank 1) |
| Chân 208 | VCCIO — I/O supply voltage (3.3 V or 5.0 V) - EPAD |
Ứng dụng tiêu biểu
EPF10K20RI208-4U phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPF10K20RI208-4U — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Identical silicon with U packing-code designation (vsEPF10K20RI208-4)
- Industrial temperature grade for harsh environments (vsEPF10K20RC208-4)
- Faster -4 speed grade for timing-critical designs (vsEPF10K20RC208-3)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
