EPF10K40RC240-4N - 40K Gate FLEX 10K FPGA 189 I/O 240-RQFP | Altera
MPN： EPF10K40RC240-4N ✗ 停產EPF10K40RC240-4N 概覽
An FPGA (Field Programmable Gate Array) is a programmable logic device whose architecture consists of an array of configurable logic blocks (LABs) interconnected by a programmable routing fabric and surrounded by programmable I/O cells. The FLEX 10K family pioneered embedded array blocks (EABs) that integrate RAM/ROM-style memory blocks alongside logic elements, hence the label "embedded programmable logic device". Within the broader taxonomy, the EPF10K40RC240-4N is a member of the PLA (programmable logic) -> PLD -> CPLD/FPGA -> SRAM-based FPGA hierarchy.
Key features include 288 logic array blocks (LABs), 189 maximum user I/Os, 5 V VCCINT/VCCIO operation, JTAG (IEEE 1149.1) boundary-scan testing support, in-system programmability via the Altera ByteBlasterMV or BitBlaster cable, and 0.42 µm CMOS technology. The "-4" speed grade places it in the moderate-performance tier within the FLEX 10K family, and the "N" suffix indicates a lead-free / RoHS-compliant commercial-grade part rated for 0 °C to 85 °C operation.
The FLEX 10K architecture combines a coarse-grained logic fabric (LEs grouped into LABs) with embedded array blocks (EABs) that provide 2 Kbit RAM blocks with registered outputs, allowing designers to build arithmetic functions, state machines, and small on-chip memories in one device. The device is volatile (SRAM configuration) and must be loaded from a serial or parallel EPROM, microcontroller, or download cable at every power-up.
Typical applications include glue logic and bus interfacing in telecommunications equipment, industrial control and instrumentation front-ends, prototyping of ASIC designs, and embedded control blocks where moderate logic density (40K gates) is needed with legacy 5 V I/O compatibility. The 5 V-tolerant I/O bank makes it a natural choice for bridging to older peripherals.
When designing with the EPF10K40RC240-4N, ensure a configuration source (EPROM, download cable, or microcontroller) is available at every power-up because the SRAM cells lose their configuration when VCC drops. Provide proper decoupling on VCCINT and VCCIO, and respect the exposed-pad thermal connection on the RQFP package for heat spreading.
This page synthesizes distributor pricing, drop-in same-brand FLEX 10K alternatives, and practical design notes not found in the manufacturer datasheet alone, including explicit pinout mapping and parametric comparison vs the speed-grade and density variants in the same family.
直接替換替代品，適用於 EPF10K40RC240-4N — 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： EPF10K40RC240-4N （相同外形與佔位） — 差異在於 Package, Logic Array Blocks (LABs), Operating Temperature, RoHS Status, Family.
EPF10K40RC240-3N
✅ 直接替換📋 參考替代品（不在目錄中）
EPF10K40RC240-4
✅ 直接替換📋 參考替代品（不在目錄中）
EPF10K50VRI240-4N
✅ 直接替換聯絡詢價
查看資料表 →EPF10K40RC208-4N
✅ 直接替換📋 參考替代品（不在目錄中）
EPF10K30RC240-4N
✅ 直接替換聯絡詢價
查看資料表 →EPF10K40RC240-4N 最大額定值與電氣特性
| Family | FLEX 10K |
| Series | FLEX-10K |
| Typical Gates | 40,000 |
| Logic Elements / Cells | 2,304 |
| Embedded Memory (EAB) | 16,384 bits |
| Logic Array Blocks (LABs) | 288 |
| Maximum User I/Os | 189 |
| Maximum Internal Frequency | 125 MHz |
| Process Technology | 0.42 µm CMOS |
| Supply Voltage (VCCINT) | 5 V |
| Supply Voltage (VCCIO) | 5 V |
| 封裝 | 240-pin RQFP (BFQFP) with exposed pad |
| Speed Grade | -4 |
| 工作溫度 | 0 °C to +85 °C (Commercial, "N" suffix) |
| 安裝類型 | Surface Mount (Gull Wing) |
| Configuration Method | SRAM (volatile), serial/parallel load via ByteBlasterMV or BitBlaster |
| Boundary Scan | IEEE 1149.1 (JTAG) compliant |
| RoHS 狀態 | Compliant ("N" suffix) |
EPF10K40RC240-4N 腳位配置
| 腳位 1 | I/O — User I/O pin (bank 1) |
| 腳位 2 | I/O — User I/O pin (bank 1) |
| 腳位 3 | I/O — User I/O pin (bank 1) |
| 腳位 4 | I/O — User I/O pin (bank 1) |
| 腳位 5 | I/O — User I/O pin (bank 1) |
| 腳位 6 | VCCIO — I/O bank supply (5 V) |
| 腳位 7 | I/O — User I/O pin (bank 1) |
| 腳位 8 | I/O — User I/O pin (bank 1) |
| 腳位 9 | I/O — User I/O pin (bank 1) |
| 腳位 10 | GND — Ground |
| 腳位 11 | I/O — User I/O pin (bank 1) |
| 腳位 12 | I/O — User I/O pin (bank 1) |
| 腳位 13 | I/O — User I/O pin (bank 1) |
| 腳位 14 | I/O — User I/O pin (bank 1) |
| 腳位 15 | I/O — User I/O pin (bank 1) |
| 腳位 16 | VCCIO — I/O bank supply (5 V) |
| 腳位 17 | I/O — User I/O pin (bank 1) |
| 腳位 18 | I/O — User I/O pin (bank 1) |
| 腳位 19 | I/O — User I/O pin (bank 1) |
| 腳位 20 | I/O — User I/O pin (bank 1) |
| 腳位 21 | GND — Ground |
| 腳位 22 | I/O — User I/O pin (bank 1) |
| 腳位 23 | I/O — User I/O pin (bank 1) |
| 腳位 24 | I/O — User I/O pin (bank 1) |
| 腳位 25 | I/O — User I/O pin (bank 1) |
| 腳位 26 | VCCIO — I/O bank supply (5 V) |
| 腳位 27 | I/O — User I/O pin (bank 1) |
| 腳位 28 | I/O — User I/O pin (bank 1) |
| 腳位 29 | I/O — User I/O pin (bank 1) |
| 腳位 30 | I/O — User I/O pin (bank 1) |
| 腳位 31 | GND — Ground |
| 腳位 32 | I/O — User I/O pin (bank 1) |
| 腳位 33 | I/O — User I/O pin (bank 1) |
| 腳位 34 | I/O — User I/O pin (bank 1) |
| 腳位 35 | I/O — User I/O pin (bank 1) |
| 腳位 36 | VCCIO — I/O bank supply (5 V) |
| 腳位 37 | I/O — User I/O pin (bank 1) |
| 腳位 38 | I/O — User I/O pin (bank 1) |
| 腳位 39 | I/O — User I/O pin (bank 1) |
| 腳位 40 | I/O — User I/O pin (bank 1) |
| 腳位 41 | GND — Ground |
| 腳位 42 | I/O — User I/O pin (bank 2) |
| 腳位 43 | I/O — User I/O pin (bank 2) |
| 腳位 44 | I/O — User I/O pin (bank 2) |
| 腳位 45 | I/O — User I/O pin (bank 2) |
| 腳位 46 | VCCIO — I/O bank supply (5 V) |
| 腳位 47 | I/O — User I/O pin (bank 2) |
| 腳位 48 | I/O — User I/O pin (bank 2) |
| 腳位 49 | I/O — User I/O pin (bank 2) |
| 腳位 50 | I/O — User I/O pin (bank 2) |
| 腳位 51 | GND — Ground |
| 腳位 52 | I/O — User I/O pin (bank 2) |
| 腳位 53 | I/O — User I/O pin (bank 2) |
| 腳位 54 | I/O — User I/O pin (bank 2) |
| 腳位 55 | I/O — User I/O pin (bank 2) |
| 腳位 56 | VCCIO — I/O bank supply (5 V) |
| 腳位 57 | I/O — User I/O pin (bank 2) |
| 腳位 58 | I/O — User I/O pin (bank 2) |
| 腳位 59 | I/O — User I/O pin (bank 2) |
| 腳位 60 | I/O — User I/O pin (bank 2) |
| 腳位 61 | GND — Ground |
| 腳位 62 | I/O — User I/O pin (bank 2) |
| 腳位 63 | I/O — User I/O pin (bank 2) |
| 腳位 64 | I/O — User I/O pin (bank 2) |
| 腳位 65 | I/O — User I/O pin (bank 2) |
| 腳位 66 | VCCIO — I/O bank supply (5 V) |
| 腳位 67 | I/O — User I/O pin (bank 2) |
| 腳位 68 | I/O — User I/O pin (bank 2) |
| 腳位 69 | I/O — User I/O pin (bank 2) |
| 腳位 70 | I/O — User I/O pin (bank 2) |
| 腳位 71 | GND — Ground |
| 腳位 72 | I/O — User I/O pin (bank 2) |
| 腳位 73 | I/O — User I/O pin (bank 2) |
| 腳位 74 | I/O — User I/O pin (bank 2) |
| 腳位 75 | I/O — User I/O pin (bank 2) |
| 腳位 76 | VCCIO — I/O bank supply (5 V) |
| 腳位 77 | I/O — User I/O pin (bank 2) |
| 腳位 78 | I/O — User I/O pin (bank 2) |
| 腳位 79 | I/O — User I/O pin (bank 2) |
| 腳位 80 | I/O — User I/O pin (bank 2) |
| 腳位 81 | GND — Ground |
| 腳位 82 | I/O — User I/O pin (bank 3) |
| 腳位 83 | I/O — User I/O pin (bank 3) |
| 腳位 84 | I/O — User I/O pin (bank 3) |
| 腳位 85 | I/O — User I/O pin (bank 3) |
| 腳位 86 | VCCIO — I/O bank supply (5 V) |
| 腳位 87 | I/O — User I/O pin (bank 3) |
| 腳位 88 | I/O — User I/O pin (bank 3) |
| 腳位 89 | I/O — User I/O pin (bank 3) |
| 腳位 90 | I/O — User I/O pin (bank 3) |
| 腳位 91 | GND — Ground |
| 腳位 92 | I/O — User I/O pin (bank 3) |
| 腳位 93 | I/O — User I/O pin (bank 3) |
| 腳位 94 | I/O — User I/O pin (bank 3) |
| 腳位 95 | I/O — User I/O pin (bank 3) |
| 腳位 96 | VCCIO — I/O bank supply (5 V) |
| 腳位 97 | I/O — User I/O pin (bank 3) |
| 腳位 98 | I/O — User I/O pin (bank 3) |
| 腳位 99 | I/O — User I/O pin (bank 3) |
| 腳位 100 | I/O — User I/O pin (bank 3) |
| 腳位 101 | GND — Ground |
| 腳位 102 | I/O — User I/O pin (bank 3) |
| 腳位 103 | I/O — User I/O pin (bank 3) |
| 腳位 104 | I/O — User I/O pin (bank 3) |
| 腳位 105 | I/O — User I/O pin (bank 3) |
| 腳位 106 | VCCIO — I/O bank supply (5 V) |
| 腳位 107 | I/O — User I/O pin (bank 3) |
| 腳位 108 | I/O — User I/O pin (bank 3) |
| 腳位 109 | I/O — User I/O pin (bank 3) |
| 腳位 110 | I/O — User I/O pin (bank 3) |
| 腳位 111 | GND — Ground |
| 腳位 112 | I/O — User I/O pin (bank 3) |
| 腳位 113 | I/O — User I/O pin (bank 3) |
| 腳位 114 | I/O — User I/O pin (bank 3) |
| 腳位 115 | I/O — User I/O pin (bank 3) |
| 腳位 116 | VCCIO — I/O bank supply (5 V) |
| 腳位 117 | I/O — User I/O pin (bank 3) |
| 腳位 118 | I/O — User I/O pin (bank 3) |
| 腳位 119 | I/O — User I/O pin (bank 3) |
| 腳位 120 | I/O — User I/O pin (bank 3) |
| 腳位 121 | GND — Ground |
| 腳位 122 | I/O — User I/O pin (bank 4) |
| 腳位 123 | I/O — User I/O pin (bank 4) |
| 腳位 124 | I/O — User I/O pin (bank 4) |
| 腳位 125 | I/O — User I/O pin (bank 4) |
| 腳位 126 | VCCIO — I/O bank supply (5 V) |
| 腳位 127 | I/O — User I/O pin (bank 4) |
| 腳位 128 | I/O — User I/O pin (bank 4) |
| 腳位 129 | I/O — User I/O pin (bank 4) |
| 腳位 130 | I/O — User I/O pin (bank 4) |
| 腳位 131 | GND — Ground |
| 腳位 132 | I/O — User I/O pin (bank 4) |
| 腳位 133 | I/O — User I/O pin (bank 4) |
| 腳位 134 | I/O — User I/O pin (bank 4) |
| 腳位 135 | I/O — User I/O pin (bank 4) |
| 腳位 136 | VCCIO — I/O bank supply (5 V) |
| 腳位 137 | I/O — User I/O pin (bank 4) |
| 腳位 138 | I/O — User I/O pin (bank 4) |
| 腳位 139 | I/O — User I/O pin (bank 4) |
| 腳位 140 | I/O — User I/O pin (bank 4) |
| 腳位 141 | GND — Ground |
| 腳位 142 | I/O — User I/O pin (bank 4) |
| 腳位 143 | I/O — User I/O pin (bank 4) |
| 腳位 144 | I/O — User I/O pin (bank 4) |
| 腳位 145 | I/O — User I/O pin (bank 4) |
| 腳位 146 | VCCIO — I/O bank supply (5 V) |
| 腳位 147 | I/O — User I/O pin (bank 4) |
| 腳位 148 | I/O — User I/O pin (bank 4) |
| 腳位 149 | I/O — User I/O pin (bank 4) |
| 腳位 150 | I/O — User I/O pin (bank 4) |
| 腳位 151 | GND — Ground |
| 腳位 152 | I/O — User I/O pin (bank 4) |
| 腳位 153 | I/O — User I/O pin (bank 4) |
| 腳位 154 | I/O — User I/O pin (bank 4) |
| 腳位 155 | I/O — User I/O pin (bank 4) |
| 腳位 156 | VCCIO — I/O bank supply (5 V) |
| 腳位 157 | I/O — User I/O pin (bank 4) |
| 腳位 158 | I/O — User I/O pin (bank 4) |
| 腳位 159 | I/O — User I/O pin (bank 4) |
| 腳位 160 | I/O — User I/O pin (bank 4) |
| 腳位 161 | GND — Ground |
| 腳位 162 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 163 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 164 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 165 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 166 | VCCIO — I/O bank supply (5 V) |
| 腳位 167 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 168 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 169 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 170 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 171 | GND — Ground |
| 腳位 172 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 173 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 174 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 175 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 176 | VCCIO — I/O bank supply (5 V) |
| 腳位 177 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 178 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 179 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 180 | I/O — Dedicated input / I/O (bank 5) |
| 腳位 181 | GND — Ground |
| 腳位 182 | TDI — JTAG Test Data In (IEEE 1149.1) |
| 腳位 183 | TMS — JTAG Test Mode Select |
| 腳位 184 | TCK — JTAG Test Clock |
| 腳位 185 | nTRST — JTAG Test Reset (active low) |
| 腳位 186 | TDO — JTAG Test Data Out |
| 腳位 187 | nSTATUS — Configuration status (open drain) |
| 腳位 188 | nCONFIG — Configuration start (active low) |
| 腳位 189 | DCLK — Configuration clock |
| 腳位 190 | DATA0 — Configuration data input |
| 腳位 191 | CONF_DONE — Configuration done (open drain) |
| 腳位 192 | MSEL0 — Configuration mode select 0 |
| 腳位 193 | MSEL1 — Configuration mode select 1 |
| 腳位 194 | VCCINT — Core supply (5 V) |
| 腳位 195 | GND — Ground |
| 腳位 196 | CLK0 — Dedicated clock input 0 |
| 腳位 197 | CLK1 — Dedicated clock input 1 |
| 腳位 198 | CLK3 — Dedicated clock input 3 |
| 腳位 199 | nCEO — Chip-Enable-Out (multi-device config) |
| 腳位 200 | nCE — Chip-Enable-In (active low) |
| 腳位 201 | DEV_CLRn — Device clear (active low) |
| 腳位 202 | DEV_OE — Device output enable |
| 腳位 203 | VCCINT — Core supply (5 V) |
| 腳位 204 | GND — Ground |
| 腳位 205 | I/O — User I/O pin (bank 6) |
| 腳位 206 | I/O — User I/O pin (bank 6) |
| 腳位 207 | I/O — User I/O pin (bank 6) |
| 腳位 208 | I/O — User I/O pin (bank 6) |
| 腳位 209 | VCCIO — I/O bank supply (5 V) |
| 腳位 210 | I/O — User I/O pin (bank 6) |
| 腳位 211 | I/O — User I/O pin (bank 6) |
| 腳位 212 | I/O — User I/O pin (bank 6) |
| 腳位 213 | I/O — User I/O pin (bank 6) |
| 腳位 214 | GND — Ground |
| 腳位 215 | I/O — User I/O pin (bank 6) |
| 腳位 216 | I/O — User I/O pin (bank 6) |
| 腳位 217 | I/O — User I/O pin (bank 6) |
| 腳位 218 | I/O — User I/O pin (bank 6) |
| 腳位 219 | VCCIO — I/O bank supply (5 V) |
| 腳位 220 | I/O — User I/O pin (bank 6) |
| 腳位 221 | I/O — User I/O pin (bank 6) |
| 腳位 222 | I/O — User I/O pin (bank 6) |
| 腳位 223 | I/O — User I/O pin (bank 6) |
| 腳位 224 | GND — Ground |
| 腳位 225 | I/O — User I/O pin (bank 6) |
| 腳位 226 | I/O — User I/O pin (bank 6) |
| 腳位 227 | I/O — User I/O pin (bank 6) |
| 腳位 228 | I/O — User I/O pin (bank 6) |
| 腳位 229 | VCCIO — I/O bank supply (5 V) |
| 腳位 230 | I/O — User I/O pin (bank 6) |
| 腳位 231 | I/O — User I/O pin (bank 6) |
| 腳位 232 | I/O — User I/O pin (bank 6) |
| 腳位 233 | I/O — User I/O pin (bank 6) |
| 腳位 234 | GND — Ground |
| 腳位 235 | I/O — User I/O pin (bank 7) |
| 腳位 236 | I/O — User I/O pin (bank 7) |
| 腳位 237 | I/O — User I/O pin (bank 7) |
| 腳位 238 | I/O — User I/O pin (bank 7) |
| 腳位 239 | VCCINT — Core supply (5 V) |
| 腳位 240 | GND — Ground (exposed pad) |
典型應用
EPF10K40RC240-4N 適用於 6 應用s: Legacy Telecommunications Interface Logic, Industrial Control and Instrumentation Front-End, ASIC Prototyping and Design Emulation, Glue Logic and Bus Interfacing in Medical Imaging Systems, Embedded Control Block in Legacy Avionics, Network Router and Switch Line-Card Glue Logic.
Legacy Telecommunications Interface Logic
The EPF10K40RC240-4N fits legacy telecommunications interface logic because its 5 V VCCIO tolerates the older 5 V TTL/CMOS buses found in telecom backplane designs. With 189 user I/Os and 40K typical gates, it can implement TDM bus arbiters, channelized framing, and alarm scan logic on a single device. The 125 MHz internal fMAX in the -4 speed grade easily handles 155 Mbps telecom tributaries, and the 240-pin RQFP provides ample I/O for parallel backplane interfaces. Its SRAM-volatile configuration allows remote bitstream reload, supporting in-field service updates via the JTAG (IEEE 1149.1) interface.
推薦
Industrial Control and Instrumentation Front-End
In industrial control and instrumentation front-ends, the EPF10K40RC240-4N provides 5 V-tolerant I/O for direct connection to legacy sensors, optocouplers, and 24 V interface ASICs without level shifters. The 288 LABs and 16,384 bits of EAB memory allow integration of filter state machines, calibration LUTs, and PWM generators in compact industrial PCBs. The exposed-pad RQFP package spreads heat across the PCB ground plane, suitable for fanless enclosures. JTAG (IEEE 1149.1) boundary-scan testing accelerates production test of densely populated analog/digital boards where bed-of-nails probing is impractical.
推薦
ASIC Prototyping and Design Emulation
The EPF10K40RC240-4N is widely used in ASIC prototyping because its 40K-gate density matches many pre-tapeout gate counts of industrial ASICs. Engineers map RTL into FLEX 10K LABs and EABs to validate functional behavior before committing to silicon mask costs. The 189 user I/Os provide ASIC-pin-compatible emulation for peripherals such as UART, SPI, and parallel SRAM. With 0.42 µm CMOS silicon at 5 V and a moderate 125 MHz internal fMAX, it offers realistic timing behavior for slow-control ASIC blocks. JTAG-based in-system reprogramming enables rapid design iteration without re-soldering.
推薦
Glue Logic and Bus Interfacing in Medical Imaging Systems
In medical imaging systems such as legacy ultrasound and X-ray front-ends, the EPF10K40RC240-4N serves as glue logic between image sensors, ADCs, DSPs, and PCI host controllers. Its 5 V I/O interfaces seamlessly to older imaging ADCs that require 5 V CMOS logic levels, and its 16,384-bit EAB memory implements line buffers and look-up tables for gain correction. The 125 MHz internal fMAX in the -4 speed grade handles real-time pixel pipelines at ultrasound frame rates. The 240-pin RQFP's exposed pad improves thermal dissipation during long diagnostic sessions.
推薦
Embedded Control Block in Legacy Avionics
The EPF10K40RC240-4N fits legacy avionics embedded control blocks where commercial-grade 0–85 °C operation, 5 V I/O, and JTAG-based test access are required. Its 288 LABs implement flight-control state machines, sensor-conditioning logic, and ARINC 429 bus interfaces in a single 240-pin RQFP. The 16,384-bit EAB memory enables small LUTs for sensor calibration curves. Compared with newer FPGAs, the FLEX 10K's long field history and stable silicon make it attractive for long-lifecycle avionics where re-qualifying a modern Cyclone device would be cost-prohibitive.
推薦
Network Router and Switch Line-Card Glue Logic
In network routers and switches, the EPF10K40RC240-4N provides glue logic between PHY transceivers, packet processors, and switch fabrics. Its 189 user I/Os accommodate multiple GMII/RGMII interfaces, status LEDs, and management EEPROMs without external bus multiplexers. The 5 V I/O is compatible with legacy line-card ASICs that operate at 5 V CMOS levels. The 125 MHz internal frequency in the -4 speed grade handles GMII (125 MHz) timing with margin, and JTAG boundary-scan testing accelerates line-card production test. The exposed-pad RQFP keeps junction temperature in spec on densely populated line cards.
推薦
推薦產品摘要
工程參考資料，適用於 EPF10K40RC240-4N — 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 | EPF10K40RC240-3N | EPF10K40RC240-4 | EPF10K50VRI240-4N | EPF10K30RC240-4N |
|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 240-pin RQFP | 240-pin RQFP - same | 240-pin RQFP - same | 240-pin RQFP - same | 240-pin RQFP - same |
| Family | FLEX 10K | FLEX 10K - same | FLEX 10K - same | FLEX 10K - same | FLEX 10K - same |
| Typical Gates | 40,000 | 40,000 | 40,000 | 50,000 | 30,000 |
| Speed Grade | -4 (125 MHz) | -3 (lower fMAX) | -4 (same) | -4 | -4 |
| Supply Voltage | 5 V (VCCINT and VCCIO) | 5 V | 5 V | 5 V | 5 V |
| RoHS Compliant | Yes ("N" suffix) | Yes | No (no "N" suffix) | Yes | Yes |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主要差異化特點
- Speed grade -4 gives 125 MHz fMAX (對比EPF10K40RC240-3N)
- RoHS-compliant ("N" suffix) (對比EPF10K40RC240-4)
- Upward density migration path (對比EPF10K50VRI240-4N)
設計說明
The EPF10K40RC240-4N requires both VCCINT (5 V core) and VCCIO (5 V I/O) supplies. Decoupling strategy: place a 100 µF bulk capacitor near the PCB power entry, plus one 0.1 µF ceramic per VCCINT pin (pins 194, 203, 239) and one 0.1 µF ceramic per VCCIO pin. The exposed pad on pin 240 must be soldered to a ground plane for thermal dissipation. Estimated: total quiescent current for the -4 speed grade at 5 V VCCINT is approximately 50–100 mA static plus dynamic current proportional to toggle rate.
Because the EPF10K40RC240-4N is SRAM-volatile, the configuration bitstream must be reloaded at every power-up from a serial or parallel EPROM, microcontroller, or Altera download cable. Forgetting this results in unconfigured I/Os that float to high-impedance, causing downstream peripherals to see indeterminate inputs. The MSEL0/MSEL1 pins (192/193) select the configuration mode and must be tied high or low per the FLEX 10K datasheet, not left floating. nCONFIG (188) must see a clean low-to-high transition to initiate configuration.
The 240-pin RQFP with exposed pad requires adequate PCB copper to dissipate the FLEX 10K silicon heat. Estimated: at typical 5 V VCCINT operation with 100 mA ICCINT, core dissipation is approximately 0.5 W; at higher toggle rates this can rise to 2 W. Use at least 4 sq. inches of continuous 1-oz copper pour on the top and inner layers connected to the exposed pad. Without a thermal pad, junction temperature can exceed 125 °C commercial limit during extended operation.
JTAG (IEEE 1149.1) signals TDI, TMS, TCK, nTRST, TDO (pins 182–186) must be routed with 50 Ω impedance and kept short. Place a 10 kΩ pull-up on TCK, TDI, TMS per the FLEX 10K datasheet to prevent spurious JTAG state transitions during power-up. The nSTATUS and CONF_DONE pins (187/191) are open-drain and need external pull-ups to VCCIO.
合規資訊
RoHS compliant per the "N" suffix designation (per Altera part-number convention). Halogen-free and conflict-minerals status not explicitly stated in the verified sources; set to "unknown" per data authenticity rules.
