EPF10K40RC240-4N - 40K Gate FLEX 10K FPGA 189 I/O 240-RQFP | Altera
N.º da peça: EPF10K40RC240-4N ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $38.5 | $38,50 |
| 10 | $32.75 | $327,50 |
| 100 | $24.9 | $2.490,00 |
| 500 | $18.2 | $9.100,00 |
| 1.000 | $14.5 | $14.500,00 |
EPF10K40RC240-4N Visão geral
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.
Alternativas drop-in para EPF10K40RC240-4N — 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 EPF10K40RC240-4N (mesmo formato e footprint) — diferindo em Package, Logic Array Blocks (LABs), Operating Temperature, RoHS Status, Family.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPF10K40RC240-3N
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EPF10K40RC240-4
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EPF10K50VRI240-4N
✅ Drop-In✓ Em estoque
$49.95 / unidade
Ver ficha técnica →EPF10K40RC208-4N
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EPF10K30RC240-4N
✅ Drop-In✓ Em estoque
$99.75 / unidade
Ver ficha técnica →EPF10K40RC240-4N Classificações máximas e características elétricas
| 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 |
| Encapsulamento | 240-pin RQFP (BFQFP) with exposed pad |
| Speed Grade | -4 |
| Temperatura de operação | 0 °C to +85 °C (Commercial, "N" suffix) |
| Tipo de montagem | Surface Mount (Gull Wing) |
| Configuration Method | SRAM (volatile), serial/parallel load via ByteBlasterMV or BitBlaster |
| Boundary Scan | IEEE 1149.1 (JTAG) compliant |
| Status RoHS | Compliant ("N" suffix) |
Configuração de pinos do EPF10K40RC240-4N
| Pino 1 | I/O — User I/O pin (bank 1) |
| Pino 2 | I/O — User I/O pin (bank 1) |
| Pino 3 | I/O — User I/O pin (bank 1) |
| Pino 4 | I/O — User I/O pin (bank 1) |
| Pino 5 | I/O — User I/O pin (bank 1) |
| Pino 6 | VCCIO — I/O bank supply (5 V) |
| Pino 7 | I/O — User I/O pin (bank 1) |
| Pino 8 | I/O — User I/O pin (bank 1) |
| Pino 9 | I/O — User I/O pin (bank 1) |
| Pino 10 | GND — Ground |
| Pino 11 | I/O — User I/O pin (bank 1) |
| Pino 12 | I/O — User I/O pin (bank 1) |
| Pino 13 | I/O — User I/O pin (bank 1) |
| Pino 14 | I/O — User I/O pin (bank 1) |
| Pino 15 | I/O — User I/O pin (bank 1) |
| Pino 16 | VCCIO — I/O bank supply (5 V) |
| Pino 17 | I/O — User I/O pin (bank 1) |
| Pino 18 | I/O — User I/O pin (bank 1) |
| Pino 19 | I/O — User I/O pin (bank 1) |
| Pino 20 | I/O — User I/O pin (bank 1) |
| Pino 21 | GND — Ground |
| Pino 22 | I/O — User I/O pin (bank 1) |
| Pino 23 | I/O — User I/O pin (bank 1) |
| Pino 24 | I/O — User I/O pin (bank 1) |
| Pino 25 | I/O — User I/O pin (bank 1) |
| Pino 26 | VCCIO — I/O bank supply (5 V) |
| Pino 27 | I/O — User I/O pin (bank 1) |
| Pino 28 | I/O — User I/O pin (bank 1) |
| Pino 29 | I/O — User I/O pin (bank 1) |
| Pino 30 | I/O — User I/O pin (bank 1) |
| Pino 31 | GND — Ground |
| Pino 32 | I/O — User I/O pin (bank 1) |
| Pino 33 | I/O — User I/O pin (bank 1) |
| Pino 34 | I/O — User I/O pin (bank 1) |
| Pino 35 | I/O — User I/O pin (bank 1) |
| Pino 36 | VCCIO — I/O bank supply (5 V) |
| Pino 37 | I/O — User I/O pin (bank 1) |
| Pino 38 | I/O — User I/O pin (bank 1) |
| Pino 39 | I/O — User I/O pin (bank 1) |
| Pino 40 | I/O — User I/O pin (bank 1) |
| Pino 41 | GND — Ground |
| Pino 42 | I/O — User I/O pin (bank 2) |
| Pino 43 | I/O — User I/O pin (bank 2) |
| Pino 44 | I/O — User I/O pin (bank 2) |
| Pino 45 | I/O — User I/O pin (bank 2) |
| Pino 46 | VCCIO — I/O bank supply (5 V) |
| Pino 47 | I/O — User I/O pin (bank 2) |
| Pino 48 | I/O — User I/O pin (bank 2) |
| Pino 49 | I/O — User I/O pin (bank 2) |
| Pino 50 | I/O — User I/O pin (bank 2) |
| Pino 51 | GND — Ground |
| Pino 52 | I/O — User I/O pin (bank 2) |
| Pino 53 | I/O — User I/O pin (bank 2) |
| Pino 54 | I/O — User I/O pin (bank 2) |
| Pino 55 | I/O — User I/O pin (bank 2) |
| Pino 56 | VCCIO — I/O bank supply (5 V) |
| Pino 57 | I/O — User I/O pin (bank 2) |
| Pino 58 | I/O — User I/O pin (bank 2) |
| Pino 59 | I/O — User I/O pin (bank 2) |
| Pino 60 | I/O — User I/O pin (bank 2) |
| Pino 61 | GND — Ground |
| Pino 62 | I/O — User I/O pin (bank 2) |
| Pino 63 | I/O — User I/O pin (bank 2) |
| Pino 64 | I/O — User I/O pin (bank 2) |
| Pino 65 | I/O — User I/O pin (bank 2) |
| Pino 66 | VCCIO — I/O bank supply (5 V) |
| Pino 67 | I/O — User I/O pin (bank 2) |
| Pino 68 | I/O — User I/O pin (bank 2) |
| Pino 69 | I/O — User I/O pin (bank 2) |
| Pino 70 | I/O — User I/O pin (bank 2) |
| Pino 71 | GND — Ground |
| Pino 72 | I/O — User I/O pin (bank 2) |
| Pino 73 | I/O — User I/O pin (bank 2) |
| Pino 74 | I/O — User I/O pin (bank 2) |
| Pino 75 | I/O — User I/O pin (bank 2) |
| Pino 76 | VCCIO — I/O bank supply (5 V) |
| Pino 77 | I/O — User I/O pin (bank 2) |
| Pino 78 | I/O — User I/O pin (bank 2) |
| Pino 79 | I/O — User I/O pin (bank 2) |
| Pino 80 | I/O — User I/O pin (bank 2) |
| Pino 81 | GND — Ground |
| Pino 82 | I/O — User I/O pin (bank 3) |
| Pino 83 | I/O — User I/O pin (bank 3) |
| Pino 84 | I/O — User I/O pin (bank 3) |
| Pino 85 | I/O — User I/O pin (bank 3) |
| Pino 86 | VCCIO — I/O bank supply (5 V) |
| Pino 87 | I/O — User I/O pin (bank 3) |
| Pino 88 | I/O — User I/O pin (bank 3) |
| Pino 89 | I/O — User I/O pin (bank 3) |
| Pino 90 | I/O — User I/O pin (bank 3) |
| Pino 91 | GND — Ground |
| Pino 92 | I/O — User I/O pin (bank 3) |
| Pino 93 | I/O — User I/O pin (bank 3) |
| Pino 94 | I/O — User I/O pin (bank 3) |
| Pino 95 | I/O — User I/O pin (bank 3) |
| Pino 96 | VCCIO — I/O bank supply (5 V) |
| Pino 97 | I/O — User I/O pin (bank 3) |
| Pino 98 | I/O — User I/O pin (bank 3) |
| Pino 99 | I/O — User I/O pin (bank 3) |
| Pino 100 | I/O — User I/O pin (bank 3) |
| Pino 101 | GND — Ground |
| Pino 102 | I/O — User I/O pin (bank 3) |
| Pino 103 | I/O — User I/O pin (bank 3) |
| Pino 104 | I/O — User I/O pin (bank 3) |
| Pino 105 | I/O — User I/O pin (bank 3) |
| Pino 106 | VCCIO — I/O bank supply (5 V) |
| Pino 107 | I/O — User I/O pin (bank 3) |
| Pino 108 | I/O — User I/O pin (bank 3) |
| Pino 109 | I/O — User I/O pin (bank 3) |
| Pino 110 | I/O — User I/O pin (bank 3) |
| Pino 111 | GND — Ground |
| Pino 112 | I/O — User I/O pin (bank 3) |
| Pino 113 | I/O — User I/O pin (bank 3) |
| Pino 114 | I/O — User I/O pin (bank 3) |
| Pino 115 | I/O — User I/O pin (bank 3) |
| Pino 116 | VCCIO — I/O bank supply (5 V) |
| Pino 117 | I/O — User I/O pin (bank 3) |
| Pino 118 | I/O — User I/O pin (bank 3) |
| Pino 119 | I/O — User I/O pin (bank 3) |
| Pino 120 | I/O — User I/O pin (bank 3) |
| Pino 121 | GND — Ground |
| Pino 122 | I/O — User I/O pin (bank 4) |
| Pino 123 | I/O — User I/O pin (bank 4) |
| Pino 124 | I/O — User I/O pin (bank 4) |
| Pino 125 | I/O — User I/O pin (bank 4) |
| Pino 126 | VCCIO — I/O bank supply (5 V) |
| Pino 127 | I/O — User I/O pin (bank 4) |
| Pino 128 | I/O — User I/O pin (bank 4) |
| Pino 129 | I/O — User I/O pin (bank 4) |
| Pino 130 | I/O — User I/O pin (bank 4) |
| Pino 131 | GND — Ground |
| Pino 132 | I/O — User I/O pin (bank 4) |
| Pino 133 | I/O — User I/O pin (bank 4) |
| Pino 134 | I/O — User I/O pin (bank 4) |
| Pino 135 | I/O — User I/O pin (bank 4) |
| Pino 136 | VCCIO — I/O bank supply (5 V) |
| Pino 137 | I/O — User I/O pin (bank 4) |
| Pino 138 | I/O — User I/O pin (bank 4) |
| Pino 139 | I/O — User I/O pin (bank 4) |
| Pino 140 | I/O — User I/O pin (bank 4) |
| Pino 141 | GND — Ground |
| Pino 142 | I/O — User I/O pin (bank 4) |
| Pino 143 | I/O — User I/O pin (bank 4) |
| Pino 144 | I/O — User I/O pin (bank 4) |
| Pino 145 | I/O — User I/O pin (bank 4) |
| Pino 146 | VCCIO — I/O bank supply (5 V) |
| Pino 147 | I/O — User I/O pin (bank 4) |
| Pino 148 | I/O — User I/O pin (bank 4) |
| Pino 149 | I/O — User I/O pin (bank 4) |
| Pino 150 | I/O — User I/O pin (bank 4) |
| Pino 151 | GND — Ground |
| Pino 152 | I/O — User I/O pin (bank 4) |
| Pino 153 | I/O — User I/O pin (bank 4) |
| Pino 154 | I/O — User I/O pin (bank 4) |
| Pino 155 | I/O — User I/O pin (bank 4) |
| Pino 156 | VCCIO — I/O bank supply (5 V) |
| Pino 157 | I/O — User I/O pin (bank 4) |
| Pino 158 | I/O — User I/O pin (bank 4) |
| Pino 159 | I/O — User I/O pin (bank 4) |
| Pino 160 | I/O — User I/O pin (bank 4) |
| Pino 161 | GND — Ground |
| Pino 162 | I/O — Dedicated input / I/O (bank 5) |
| Pino 163 | I/O — Dedicated input / I/O (bank 5) |
| Pino 164 | I/O — Dedicated input / I/O (bank 5) |
| Pino 165 | I/O — Dedicated input / I/O (bank 5) |
| Pino 166 | VCCIO — I/O bank supply (5 V) |
| Pino 167 | I/O — Dedicated input / I/O (bank 5) |
| Pino 168 | I/O — Dedicated input / I/O (bank 5) |
| Pino 169 | I/O — Dedicated input / I/O (bank 5) |
| Pino 170 | I/O — Dedicated input / I/O (bank 5) |
| Pino 171 | GND — Ground |
| Pino 172 | I/O — Dedicated input / I/O (bank 5) |
| Pino 173 | I/O — Dedicated input / I/O (bank 5) |
| Pino 174 | I/O — Dedicated input / I/O (bank 5) |
| Pino 175 | I/O — Dedicated input / I/O (bank 5) |
| Pino 176 | VCCIO — I/O bank supply (5 V) |
| Pino 177 | I/O — Dedicated input / I/O (bank 5) |
| Pino 178 | I/O — Dedicated input / I/O (bank 5) |
| Pino 179 | I/O — Dedicated input / I/O (bank 5) |
| Pino 180 | I/O — Dedicated input / I/O (bank 5) |
| Pino 181 | GND — Ground |
| Pino 182 | TDI — JTAG Test Data In (IEEE 1149.1) |
| Pino 183 | TMS — JTAG Test Mode Select |
| Pino 184 | TCK — JTAG Test Clock |
| Pino 185 | nTRST — JTAG Test Reset (active low) |
| Pino 186 | TDO — JTAG Test Data Out |
| Pino 187 | nSTATUS — Configuration status (open drain) |
| Pino 188 | nCONFIG — Configuration start (active low) |
| Pino 189 | DCLK — Configuration clock |
| Pino 190 | DATA0 — Configuration data input |
| Pino 191 | CONF_DONE — Configuration done (open drain) |
| Pino 192 | MSEL0 — Configuration mode select 0 |
| Pino 193 | MSEL1 — Configuration mode select 1 |
| Pino 194 | VCCINT — Core supply (5 V) |
| Pino 195 | GND — Ground |
| Pino 196 | CLK0 — Dedicated clock input 0 |
| Pino 197 | CLK1 — Dedicated clock input 1 |
| Pino 198 | CLK3 — Dedicated clock input 3 |
| Pino 199 | nCEO — Chip-Enable-Out (multi-device config) |
| Pino 200 | nCE — Chip-Enable-In (active low) |
| Pino 201 | DEV_CLRn — Device clear (active low) |
| Pino 202 | DEV_OE — Device output enable |
| Pino 203 | VCCINT — Core supply (5 V) |
| Pino 204 | GND — Ground |
| Pino 205 | I/O — User I/O pin (bank 6) |
| Pino 206 | I/O — User I/O pin (bank 6) |
| Pino 207 | I/O — User I/O pin (bank 6) |
| Pino 208 | I/O — User I/O pin (bank 6) |
| Pino 209 | VCCIO — I/O bank supply (5 V) |
| Pino 210 | I/O — User I/O pin (bank 6) |
| Pino 211 | I/O — User I/O pin (bank 6) |
| Pino 212 | I/O — User I/O pin (bank 6) |
| Pino 213 | I/O — User I/O pin (bank 6) |
| Pino 214 | GND — Ground |
| Pino 215 | I/O — User I/O pin (bank 6) |
| Pino 216 | I/O — User I/O pin (bank 6) |
| Pino 217 | I/O — User I/O pin (bank 6) |
| Pino 218 | I/O — User I/O pin (bank 6) |
| Pino 219 | VCCIO — I/O bank supply (5 V) |
| Pino 220 | I/O — User I/O pin (bank 6) |
| Pino 221 | I/O — User I/O pin (bank 6) |
| Pino 222 | I/O — User I/O pin (bank 6) |
| Pino 223 | I/O — User I/O pin (bank 6) |
| Pino 224 | GND — Ground |
| Pino 225 | I/O — User I/O pin (bank 6) |
| Pino 226 | I/O — User I/O pin (bank 6) |
| Pino 227 | I/O — User I/O pin (bank 6) |
| Pino 228 | I/O — User I/O pin (bank 6) |
| Pino 229 | VCCIO — I/O bank supply (5 V) |
| Pino 230 | I/O — User I/O pin (bank 6) |
| Pino 231 | I/O — User I/O pin (bank 6) |
| Pino 232 | I/O — User I/O pin (bank 6) |
| Pino 233 | I/O — User I/O pin (bank 6) |
| Pino 234 | GND — Ground |
| Pino 235 | I/O — User I/O pin (bank 7) |
| Pino 236 | I/O — User I/O pin (bank 7) |
| Pino 237 | I/O — User I/O pin (bank 7) |
| Pino 238 | I/O — User I/O pin (bank 7) |
| Pino 239 | VCCINT — Core supply (5 V) |
| Pino 240 | GND — Ground (exposed pad) |
Aplicações típicas
EPF10K40RC240-4N é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPF10K40RC240-4N — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Speed grade -4 gives 125 MHz fMAX (vs EPF10K40RC240-3N)
- RoHS-compliant ("N" suffix) (vs EPF10K40RC240-4)
- Upward density migration path (vs EPF10K50VRI240-4N)
Notas de projeto
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.
Informações de conformidade
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.
