EPF10K40RC240-4N - 40K Gate FLEX 10K FPGA 189 I/O 240-RQFP | Altera
Référence : EPF10K40RC240-4N ✗ Fin de vie| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour EPF10K40RC240-4N — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EPF10K40RC240-4N (même facteur de forme et même empreinte) — différant par Package, Logic Array Blocks (LABs), Operating Temperature, RoHS Status, Family.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPF10K40RC240-3N
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EPF10K40RC240-4
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EPF10K50VRI240-4N
✅ Remplacement direct✓ En stock
$49.95 / unité
Voir la fiche technique →EPF10K40RC208-4N
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EPF10K30RC240-4N
✅ Remplacement direct✓ En stock
$99.75 / unité
Voir la fiche technique →EPF10K40RC240-4N Valeurs maximales et caractéristiques électriques
| 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 |
| Boîtier | 240-pin RQFP (BFQFP) with exposed pad |
| Speed Grade | -4 |
| Température de fonctionnement | 0 °C to +85 °C (Commercial, "N" suffix) |
| Type de montage | Surface Mount (Gull Wing) |
| Configuration Method | SRAM (volatile), serial/parallel load via ByteBlasterMV or BitBlaster |
| Boundary Scan | IEEE 1149.1 (JTAG) compliant |
| Statut RoHS | Compliant ("N" suffix) |
Configuration des broches de EPF10K40RC240-4N
| Broche 1 | I/O — User I/O pin (bank 1) |
| Broche 2 | I/O — User I/O pin (bank 1) |
| Broche 3 | I/O — User I/O pin (bank 1) |
| Broche 4 | I/O — User I/O pin (bank 1) |
| Broche 5 | I/O — User I/O pin (bank 1) |
| Broche 6 | VCCIO — I/O bank supply (5 V) |
| Broche 7 | I/O — User I/O pin (bank 1) |
| Broche 8 | I/O — User I/O pin (bank 1) |
| Broche 9 | I/O — User I/O pin (bank 1) |
| Broche 10 | GND — Ground |
| Broche 11 | I/O — User I/O pin (bank 1) |
| Broche 12 | I/O — User I/O pin (bank 1) |
| Broche 13 | I/O — User I/O pin (bank 1) |
| Broche 14 | I/O — User I/O pin (bank 1) |
| Broche 15 | I/O — User I/O pin (bank 1) |
| Broche 16 | VCCIO — I/O bank supply (5 V) |
| Broche 17 | I/O — User I/O pin (bank 1) |
| Broche 18 | I/O — User I/O pin (bank 1) |
| Broche 19 | I/O — User I/O pin (bank 1) |
| Broche 20 | I/O — User I/O pin (bank 1) |
| Broche 21 | GND — Ground |
| Broche 22 | I/O — User I/O pin (bank 1) |
| Broche 23 | I/O — User I/O pin (bank 1) |
| Broche 24 | I/O — User I/O pin (bank 1) |
| Broche 25 | I/O — User I/O pin (bank 1) |
| Broche 26 | VCCIO — I/O bank supply (5 V) |
| Broche 27 | I/O — User I/O pin (bank 1) |
| Broche 28 | I/O — User I/O pin (bank 1) |
| Broche 29 | I/O — User I/O pin (bank 1) |
| Broche 30 | I/O — User I/O pin (bank 1) |
| Broche 31 | GND — Ground |
| Broche 32 | I/O — User I/O pin (bank 1) |
| Broche 33 | I/O — User I/O pin (bank 1) |
| Broche 34 | I/O — User I/O pin (bank 1) |
| Broche 35 | I/O — User I/O pin (bank 1) |
| Broche 36 | VCCIO — I/O bank supply (5 V) |
| Broche 37 | I/O — User I/O pin (bank 1) |
| Broche 38 | I/O — User I/O pin (bank 1) |
| Broche 39 | I/O — User I/O pin (bank 1) |
| Broche 40 | I/O — User I/O pin (bank 1) |
| Broche 41 | GND — Ground |
| Broche 42 | I/O — User I/O pin (bank 2) |
| Broche 43 | I/O — User I/O pin (bank 2) |
| Broche 44 | I/O — User I/O pin (bank 2) |
| Broche 45 | I/O — User I/O pin (bank 2) |
| Broche 46 | VCCIO — I/O bank supply (5 V) |
| Broche 47 | I/O — User I/O pin (bank 2) |
| Broche 48 | I/O — User I/O pin (bank 2) |
| Broche 49 | I/O — User I/O pin (bank 2) |
| Broche 50 | I/O — User I/O pin (bank 2) |
| Broche 51 | GND — Ground |
| Broche 52 | I/O — User I/O pin (bank 2) |
| Broche 53 | I/O — User I/O pin (bank 2) |
| Broche 54 | I/O — User I/O pin (bank 2) |
| Broche 55 | I/O — User I/O pin (bank 2) |
| Broche 56 | VCCIO — I/O bank supply (5 V) |
| Broche 57 | I/O — User I/O pin (bank 2) |
| Broche 58 | I/O — User I/O pin (bank 2) |
| Broche 59 | I/O — User I/O pin (bank 2) |
| Broche 60 | I/O — User I/O pin (bank 2) |
| Broche 61 | GND — Ground |
| Broche 62 | I/O — User I/O pin (bank 2) |
| Broche 63 | I/O — User I/O pin (bank 2) |
| Broche 64 | I/O — User I/O pin (bank 2) |
| Broche 65 | I/O — User I/O pin (bank 2) |
| Broche 66 | VCCIO — I/O bank supply (5 V) |
| Broche 67 | I/O — User I/O pin (bank 2) |
| Broche 68 | I/O — User I/O pin (bank 2) |
| Broche 69 | I/O — User I/O pin (bank 2) |
| Broche 70 | I/O — User I/O pin (bank 2) |
| Broche 71 | GND — Ground |
| Broche 72 | I/O — User I/O pin (bank 2) |
| Broche 73 | I/O — User I/O pin (bank 2) |
| Broche 74 | I/O — User I/O pin (bank 2) |
| Broche 75 | I/O — User I/O pin (bank 2) |
| Broche 76 | VCCIO — I/O bank supply (5 V) |
| Broche 77 | I/O — User I/O pin (bank 2) |
| Broche 78 | I/O — User I/O pin (bank 2) |
| Broche 79 | I/O — User I/O pin (bank 2) |
| Broche 80 | I/O — User I/O pin (bank 2) |
| Broche 81 | GND — Ground |
| Broche 82 | I/O — User I/O pin (bank 3) |
| Broche 83 | I/O — User I/O pin (bank 3) |
| Broche 84 | I/O — User I/O pin (bank 3) |
| Broche 85 | I/O — User I/O pin (bank 3) |
| Broche 86 | VCCIO — I/O bank supply (5 V) |
| Broche 87 | I/O — User I/O pin (bank 3) |
| Broche 88 | I/O — User I/O pin (bank 3) |
| Broche 89 | I/O — User I/O pin (bank 3) |
| Broche 90 | I/O — User I/O pin (bank 3) |
| Broche 91 | GND — Ground |
| Broche 92 | I/O — User I/O pin (bank 3) |
| Broche 93 | I/O — User I/O pin (bank 3) |
| Broche 94 | I/O — User I/O pin (bank 3) |
| Broche 95 | I/O — User I/O pin (bank 3) |
| Broche 96 | VCCIO — I/O bank supply (5 V) |
| Broche 97 | I/O — User I/O pin (bank 3) |
| Broche 98 | I/O — User I/O pin (bank 3) |
| Broche 99 | I/O — User I/O pin (bank 3) |
| Broche 100 | I/O — User I/O pin (bank 3) |
| Broche 101 | GND — Ground |
| Broche 102 | I/O — User I/O pin (bank 3) |
| Broche 103 | I/O — User I/O pin (bank 3) |
| Broche 104 | I/O — User I/O pin (bank 3) |
| Broche 105 | I/O — User I/O pin (bank 3) |
| Broche 106 | VCCIO — I/O bank supply (5 V) |
| Broche 107 | I/O — User I/O pin (bank 3) |
| Broche 108 | I/O — User I/O pin (bank 3) |
| Broche 109 | I/O — User I/O pin (bank 3) |
| Broche 110 | I/O — User I/O pin (bank 3) |
| Broche 111 | GND — Ground |
| Broche 112 | I/O — User I/O pin (bank 3) |
| Broche 113 | I/O — User I/O pin (bank 3) |
| Broche 114 | I/O — User I/O pin (bank 3) |
| Broche 115 | I/O — User I/O pin (bank 3) |
| Broche 116 | VCCIO — I/O bank supply (5 V) |
| Broche 117 | I/O — User I/O pin (bank 3) |
| Broche 118 | I/O — User I/O pin (bank 3) |
| Broche 119 | I/O — User I/O pin (bank 3) |
| Broche 120 | I/O — User I/O pin (bank 3) |
| Broche 121 | GND — Ground |
| Broche 122 | I/O — User I/O pin (bank 4) |
| Broche 123 | I/O — User I/O pin (bank 4) |
| Broche 124 | I/O — User I/O pin (bank 4) |
| Broche 125 | I/O — User I/O pin (bank 4) |
| Broche 126 | VCCIO — I/O bank supply (5 V) |
| Broche 127 | I/O — User I/O pin (bank 4) |
| Broche 128 | I/O — User I/O pin (bank 4) |
| Broche 129 | I/O — User I/O pin (bank 4) |
| Broche 130 | I/O — User I/O pin (bank 4) |
| Broche 131 | GND — Ground |
| Broche 132 | I/O — User I/O pin (bank 4) |
| Broche 133 | I/O — User I/O pin (bank 4) |
| Broche 134 | I/O — User I/O pin (bank 4) |
| Broche 135 | I/O — User I/O pin (bank 4) |
| Broche 136 | VCCIO — I/O bank supply (5 V) |
| Broche 137 | I/O — User I/O pin (bank 4) |
| Broche 138 | I/O — User I/O pin (bank 4) |
| Broche 139 | I/O — User I/O pin (bank 4) |
| Broche 140 | I/O — User I/O pin (bank 4) |
| Broche 141 | GND — Ground |
| Broche 142 | I/O — User I/O pin (bank 4) |
| Broche 143 | I/O — User I/O pin (bank 4) |
| Broche 144 | I/O — User I/O pin (bank 4) |
| Broche 145 | I/O — User I/O pin (bank 4) |
| Broche 146 | VCCIO — I/O bank supply (5 V) |
| Broche 147 | I/O — User I/O pin (bank 4) |
| Broche 148 | I/O — User I/O pin (bank 4) |
| Broche 149 | I/O — User I/O pin (bank 4) |
| Broche 150 | I/O — User I/O pin (bank 4) |
| Broche 151 | GND — Ground |
| Broche 152 | I/O — User I/O pin (bank 4) |
| Broche 153 | I/O — User I/O pin (bank 4) |
| Broche 154 | I/O — User I/O pin (bank 4) |
| Broche 155 | I/O — User I/O pin (bank 4) |
| Broche 156 | VCCIO — I/O bank supply (5 V) |
| Broche 157 | I/O — User I/O pin (bank 4) |
| Broche 158 | I/O — User I/O pin (bank 4) |
| Broche 159 | I/O — User I/O pin (bank 4) |
| Broche 160 | I/O — User I/O pin (bank 4) |
| Broche 161 | GND — Ground |
| Broche 162 | I/O — Dedicated input / I/O (bank 5) |
| Broche 163 | I/O — Dedicated input / I/O (bank 5) |
| Broche 164 | I/O — Dedicated input / I/O (bank 5) |
| Broche 165 | I/O — Dedicated input / I/O (bank 5) |
| Broche 166 | VCCIO — I/O bank supply (5 V) |
| Broche 167 | I/O — Dedicated input / I/O (bank 5) |
| Broche 168 | I/O — Dedicated input / I/O (bank 5) |
| Broche 169 | I/O — Dedicated input / I/O (bank 5) |
| Broche 170 | I/O — Dedicated input / I/O (bank 5) |
| Broche 171 | GND — Ground |
| Broche 172 | I/O — Dedicated input / I/O (bank 5) |
| Broche 173 | I/O — Dedicated input / I/O (bank 5) |
| Broche 174 | I/O — Dedicated input / I/O (bank 5) |
| Broche 175 | I/O — Dedicated input / I/O (bank 5) |
| Broche 176 | VCCIO — I/O bank supply (5 V) |
| Broche 177 | I/O — Dedicated input / I/O (bank 5) |
| Broche 178 | I/O — Dedicated input / I/O (bank 5) |
| Broche 179 | I/O — Dedicated input / I/O (bank 5) |
| Broche 180 | I/O — Dedicated input / I/O (bank 5) |
| Broche 181 | GND — Ground |
| Broche 182 | TDI — JTAG Test Data In (IEEE 1149.1) |
| Broche 183 | TMS — JTAG Test Mode Select |
| Broche 184 | TCK — JTAG Test Clock |
| Broche 185 | nTRST — JTAG Test Reset (active low) |
| Broche 186 | TDO — JTAG Test Data Out |
| Broche 187 | nSTATUS — Configuration status (open drain) |
| Broche 188 | nCONFIG — Configuration start (active low) |
| Broche 189 | DCLK — Configuration clock |
| Broche 190 | DATA0 — Configuration data input |
| Broche 191 | CONF_DONE — Configuration done (open drain) |
| Broche 192 | MSEL0 — Configuration mode select 0 |
| Broche 193 | MSEL1 — Configuration mode select 1 |
| Broche 194 | VCCINT — Core supply (5 V) |
| Broche 195 | GND — Ground |
| Broche 196 | CLK0 — Dedicated clock input 0 |
| Broche 197 | CLK1 — Dedicated clock input 1 |
| Broche 198 | CLK3 — Dedicated clock input 3 |
| Broche 199 | nCEO — Chip-Enable-Out (multi-device config) |
| Broche 200 | nCE — Chip-Enable-In (active low) |
| Broche 201 | DEV_CLRn — Device clear (active low) |
| Broche 202 | DEV_OE — Device output enable |
| Broche 203 | VCCINT — Core supply (5 V) |
| Broche 204 | GND — Ground |
| Broche 205 | I/O — User I/O pin (bank 6) |
| Broche 206 | I/O — User I/O pin (bank 6) |
| Broche 207 | I/O — User I/O pin (bank 6) |
| Broche 208 | I/O — User I/O pin (bank 6) |
| Broche 209 | VCCIO — I/O bank supply (5 V) |
| Broche 210 | I/O — User I/O pin (bank 6) |
| Broche 211 | I/O — User I/O pin (bank 6) |
| Broche 212 | I/O — User I/O pin (bank 6) |
| Broche 213 | I/O — User I/O pin (bank 6) |
| Broche 214 | GND — Ground |
| Broche 215 | I/O — User I/O pin (bank 6) |
| Broche 216 | I/O — User I/O pin (bank 6) |
| Broche 217 | I/O — User I/O pin (bank 6) |
| Broche 218 | I/O — User I/O pin (bank 6) |
| Broche 219 | VCCIO — I/O bank supply (5 V) |
| Broche 220 | I/O — User I/O pin (bank 6) |
| Broche 221 | I/O — User I/O pin (bank 6) |
| Broche 222 | I/O — User I/O pin (bank 6) |
| Broche 223 | I/O — User I/O pin (bank 6) |
| Broche 224 | GND — Ground |
| Broche 225 | I/O — User I/O pin (bank 6) |
| Broche 226 | I/O — User I/O pin (bank 6) |
| Broche 227 | I/O — User I/O pin (bank 6) |
| Broche 228 | I/O — User I/O pin (bank 6) |
| Broche 229 | VCCIO — I/O bank supply (5 V) |
| Broche 230 | I/O — User I/O pin (bank 6) |
| Broche 231 | I/O — User I/O pin (bank 6) |
| Broche 232 | I/O — User I/O pin (bank 6) |
| Broche 233 | I/O — User I/O pin (bank 6) |
| Broche 234 | GND — Ground |
| Broche 235 | I/O — User I/O pin (bank 7) |
| Broche 236 | I/O — User I/O pin (bank 7) |
| Broche 237 | I/O — User I/O pin (bank 7) |
| Broche 238 | I/O — User I/O pin (bank 7) |
| Broche 239 | VCCINT — Core supply (5 V) |
| Broche 240 | GND — Ground (exposed pad) |
Applications typiques
EPF10K40RC240-4N convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPF10K40RC240-4N — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Speed grade -4 gives 125 MHz fMAX (vs EPF10K40RC240-3N)
- RoHS-compliant ("N" suffix) (vs EPF10K40RC240-4)
- Upward density migration path (vs EPF10K50VRI240-4N)
Notes de conception
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.
Informations de conformité
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.
