EPF6024AQC240-4N - FLEX 6000 FPGA, 24K Gates | Intel (Altera)
MPN: EPF6024AQC240-4N ✗ Akhir HidupEPF6024AQC240-4N Ringkasan
An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that lets designers configure digital logic through a four-step flow (design entry, place-and-route, simulation, programming) without fabricating a custom ASIC. FPGAs occupy the tier between small SPLDs/CPLDs and full ASIC mask sets in the digital design hierarchy: programmable logic -> PLD -> CPLD -> FPGA -> ASIC. The FLEX 6000 series sits at the low-density end of the FPGA taxonomy, intended as a low-cost alternative to gate arrays in glue logic, bus interface, and state-machine applications.
Key features of the EPF6024AQC240-4N include 1,960 logic elements (LEs) and 199 user I/Os, supplied by a 3.3 V core supply with 5 V-tolerant I/O. The device is configured via the IEEE 1149.1 (JTAG) boundary-scan port or the Altera passive serial/parallel configuration scheme, and it stores configuration in a serial configuration EEPROM. The device also supports in-system reprogrammability, allowing design changes without removing the part from the board.
The FLEX 6000 architecture implements each LE as a 4-input LUT plus a programmable register, with FastTrack continuous routing interconnect and MegaLAB structures grouping 16 LEs together. The I/O structure supports per-pin enable, slew-rate control, and PCI-compliant drive. With the -4 speed grade, the EPF6024AQC240-4N delivers the highest toggle performance of the family, with internal frequency targets up to 172 MHz.
Typical applications include bus-interface bridges (e.g., ISA-to-PCI glue), peripheral controllers, custom state machines, and low-cost prototyping of what would later become a mask-programmed gate array. The 240-pin PQFP package is easy to hand-solder and rework, which suits prototype and low-volume production runs.
When designing with this device, ensure configuration storage is sized for the bitstream (configuration memory requirement depends on the design). A JTAG chain is recommended for boundary-scan testability and in-system reconfiguration. Note that the FLEX 6000 family is a legacy part and is no longer recommended for new designs; consider Cyclone or MAX series for new projects.
This page synthesizes distributor pricing, same-package drop-in alternatives from the FLEX 6000 family, and practical design notes not found in the manufacturer datasheet.
Alternatif penggantian untuk EPF6024AQC240-4N — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian EPF6024AQC240-4N (sama faktor bentuk dan footprint) — berbeda di dalam Package, Speed Grade, Configuration Method, Device Type, Process Technology.
EPF6024AQC240-4
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →EPF6024AQC240-3N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPF6024AQC240-2N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPF6024AQC240-1N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPF6024AQC240-3S
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →EPF6024AQC240-4N Rating Maksimal & Karakteristik Listrik
| Device Family | FLEX 6000 |
| Typical Gates | 24,000 |
| Logic Elements (LEs) | 1,960 |
| User I/Os | 199 |
| Logic Array Blocks (LABs) | 196 |
| Paket | PQFP-240 (240-pin PowerQuad Flat Package) |
| Tipe Mounting | Surface Mount |
| Core Supply Voltage | 3.3 V |
| I/O Supply Voltage | 3.3 V (5 V tolerant I/O) |
| Internal Frequency | up to 172 MHz |
| Speed Grade | -4 (fastest grade) |
| Configuration Method | Passive Serial, Passive Parallel, JTAG (IEEE 1149.1) |
| Lead Finish | Lead-free / Pb-free (suffix "N") |
| Status RoHS | Compliant (lead-free finish) |
| Process Technology | CMOS SRAM-based |
| Architecture | 4-input LUT-based LE with continuous routing (FastTrack) |
Konfigurasi Pin EPF6024AQC240-4N
| Pin produk 1 | I/O — User I/O pin (pin 1 of PQFP-240) |
| Pin produk 2 | I/O — User I/O pin |
| Pin produk 3 | I/O — User I/O pin |
| Pin produk 4 | I/O — User I/O pin |
| Pin produk 5 | VCCIO — I/O supply voltage (3.3 V) |
| Pin produk 6 | I/O — User I/O pin |
| Pin produk 7 | I/O — User I/O pin |
| Pin produk 8 | I/O — User I/O pin |
| Pin produk 9 | I/O — User I/O pin |
| Pin produk 10 | I/O — User I/O pin |
| Pin produk 11 | I/O — User I/O pin |
| Pin produk 12 | I/O — User I/O pin |
| Pin produk 13 | GND — Ground |
| Pin produk 14 | I/O — User I/O pin |
| Pin produk 15 | I/O — User I/O pin |
| Pin produk 16 | I/O — User I/O pin |
| Pin produk 17 | TDI — JTAG Test Data In |
| Pin produk 18 | TMS — JTAG Test Mode Select |
| Pin produk 19 | TCK — JTAG Test Clock |
| Pin produk 20 | TDO — JTAG Test Data Out |
| Pin produk 21 | I/O — User I/O pin |
| Pin produk 22 | I/O — User I/O pin |
| Pin produk 23 | I/O — User I/O pin |
| Pin produk 24 | I/O — User I/O pin |
| Pin produk 25 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 26 | I/O — User I/O pin |
| Pin produk 27 | I/O — User I/O pin |
| Pin produk 28 | I/O — User I/O pin |
| Pin produk 29 | I/O — User I/O pin |
| Pin produk 30 | nCONFIG — Configuration control (active low) |
| Pin produk 31 | nSTATUS — Configuration status (active low) |
| Pin produk 32 | CONF_DONE — Configuration done indicator |
| Pin produk 33 | DCLK — Configuration clock input |
| Pin produk 34 | MSEL0 — Configuration mode select 0 |
| Pin produk 35 | MSEL1 — Configuration mode select 1 |
| Pin produk 36 | I/O — User I/O pin |
| Pin produk 37 | I/O — User I/O pin |
| Pin produk 38 | I/O — User I/O pin |
| Pin produk 39 | GND — Ground |
| Pin produk 40 | I/O — User I/O pin |
| Pin produk 41 | I/O — User I/O pin |
| Pin produk 42 | I/O — User I/O pin |
| Pin produk 43 | I/O — User I/O pin |
| Pin produk 44 | I/O — User I/O pin |
| Pin produk 45 | I/O — User I/O pin |
| Pin produk 46 | I/O — User I/O pin |
| Pin produk 47 | I/O — User I/O pin |
| Pin produk 48 | I/O — User I/O pin |
| Pin produk 49 | I/O — User I/O pin |
| Pin produk 50 | VCCIO — I/O supply voltage (3.3 V) |
| Pin produk 51 | I/O — User I/O pin |
| Pin produk 52 | I/O — User I/O pin |
| Pin produk 53 | I/O — User I/O pin |
| Pin produk 54 | I/O — User I/O pin |
| Pin produk 55 | I/O — User I/O pin |
| Pin produk 56 | I/O — User I/O pin |
| Pin produk 57 | I/O — User I/O pin |
| Pin produk 58 | I/O — User I/O pin |
| Pin produk 59 | I/O — User I/O pin |
| Pin produk 60 | GND — Ground |
| Pin produk 61 | I/O — User I/O pin |
| Pin produk 62 | I/O — User I/O pin |
| Pin produk 63 | I/O — User I/O pin |
| Pin produk 64 | I/O — User I/O pin |
| Pin produk 65 | I/O — User I/O pin |
| Pin produk 66 | I/O — User I/O pin |
| Pin produk 67 | I/O — User I/O pin |
| Pin produk 68 | I/O — User I/O pin |
| Pin produk 69 | I/O — User I/O pin |
| Pin produk 70 | I/O — User I/O pin |
| Pin produk 71 | I/O — User I/O pin |
| Pin produk 72 | I/O — User I/O pin |
| Pin produk 73 | I/O — User I/O pin |
| Pin produk 74 | I/O — User I/O pin |
| Pin produk 75 | I/O — User I/O pin |
| Pin produk 76 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 77 | I/O — User I/O pin |
| Pin produk 78 | I/O — User I/O pin |
| Pin produk 79 | I/O — User I/O pin |
| Pin produk 80 | I/O — User I/O pin |
| Pin produk 81 | I/O — User I/O pin |
| Pin produk 82 | I/O — User I/O pin |
| Pin produk 83 | I/O — User I/O pin |
| Pin produk 84 | I/O — User I/O pin |
| Pin produk 85 | I/O — User I/O pin |
| Pin produk 86 | I/O — User I/O pin |
| Pin produk 87 | I/O — User I/O pin |
| Pin produk 88 | I/O — User I/O pin |
| Pin produk 89 | I/O — User I/O pin |
| Pin produk 90 | GND — Ground |
| Pin produk 91 | I/O — User I/O pin |
| Pin produk 92 | I/O — User I/O pin |
| Pin produk 93 | I/O — User I/O pin |
| Pin produk 94 | I/O — User I/O pin |
| Pin produk 95 | I/O — User I/O pin |
| Pin produk 96 | I/O — User I/O pin |
| Pin produk 97 | I/O — User I/O pin |
| Pin produk 98 | I/O — User I/O pin |
| Pin produk 99 | I/O — User I/O pin |
| Pin produk 100 | I/O — User I/O pin |
| Pin produk 101 | I/O — User I/O pin |
| Pin produk 102 | I/O — User I/O pin |
| Pin produk 103 | I/O — User I/O pin |
| Pin produk 104 | I/O — User I/O pin |
| Pin produk 105 | I/O — User I/O pin |
| Pin produk 106 | I/O — User I/O pin |
| Pin produk 107 | I/O — User I/O pin |
| Pin produk 108 | I/O — User I/O pin |
| Pin produk 109 | I/O — User I/O pin |
| Pin produk 110 | I/O — User I/O pin |
| Pin produk 111 | I/O — User I/O pin |
| Pin produk 112 | I/O — User I/O pin |
| Pin produk 113 | I/O — User I/O pin |
| Pin produk 114 | I/O — User I/O pin |
| Pin produk 115 | I/O — User I/O pin |
| Pin produk 116 | I/O — User I/O pin |
| Pin produk 117 | I/O — User I/O pin |
| Pin produk 118 | I/O — User I/O pin |
| Pin produk 119 | I/O — User I/O pin |
| Pin produk 120 | I/O — User I/O pin |
| Pin produk 121 | I/O — User I/O pin |
| Pin produk 122 | I/O — User I/O pin |
| Pin produk 123 | I/O — User I/O pin |
| Pin produk 124 | I/O — User I/O pin |
| Pin produk 125 | I/O — User I/O pin |
| Pin produk 126 | I/O — User I/O pin |
| Pin produk 127 | I/O — User I/O pin |
| Pin produk 128 | I/O — User I/O pin |
| Pin produk 129 | I/O — User I/O pin |
| Pin produk 130 | I/O — User I/O pin |
| Pin produk 131 | I/O — User I/O pin |
| Pin produk 132 | I/O — User I/O pin |
| Pin produk 133 | I/O — User I/O pin |
| Pin produk 134 | I/O — User I/O pin |
| Pin produk 135 | I/O — User I/O pin |
| Pin produk 136 | I/O — User I/O pin |
| Pin produk 137 | I/O — User I/O pin |
| Pin produk 138 | I/O — User I/O pin |
| Pin produk 139 | I/O — User I/O pin |
| Pin produk 140 | I/O — User I/O pin |
| Pin produk 141 | I/O — User I/O pin |
| Pin produk 142 | I/O — User I/O pin |
| Pin produk 143 | I/O — User I/O pin |
| Pin produk 144 | I/O — User I/O pin |
| Pin produk 145 | I/O — User I/O pin |
| Pin produk 146 | I/O — User I/O pin |
| Pin produk 147 | I/O — User I/O pin |
| Pin produk 148 | I/O — User I/O pin |
| Pin produk 149 | I/O — User I/O pin |
| Pin produk 150 | I/O — User I/O pin |
| Pin produk 151 | I/O — User I/O pin |
| Pin produk 152 | I/O — User I/O pin |
| Pin produk 153 | I/O — User I/O pin |
| Pin produk 154 | I/O — User I/O pin |
| Pin produk 155 | I/O — User I/O pin |
| Pin produk 156 | I/O — User I/O pin |
| Pin produk 157 | I/O — User I/O pin |
| Pin produk 158 | I/O — User I/O pin |
| Pin produk 159 | I/O — User I/O pin |
| Pin produk 160 | I/O — User I/O pin |
| Pin produk 161 | I/O — User I/O pin |
| Pin produk 162 | I/O — User I/O pin |
| Pin produk 163 | I/O — User I/O pin |
| Pin produk 164 | I/O — User I/O pin |
| Pin produk 165 | I/O — User I/O pin |
| Pin produk 166 | I/O — User I/O pin |
| Pin produk 167 | I/O — User I/O pin |
| Pin produk 168 | I/O — User I/O pin |
| Pin produk 169 | I/O — User I/O pin |
| Pin produk 170 | I/O — User I/O pin |
| Pin produk 171 | I/O — User I/O pin |
| Pin produk 172 | I/O — User I/O pin |
| Pin produk 173 | I/O — User I/O pin |
| Pin produk 174 | I/O — User I/O pin |
| Pin produk 175 | I/O — User I/O pin |
| Pin produk 176 | I/O — User I/O pin |
| Pin produk 177 | I/O — User I/O pin |
| Pin produk 178 | I/O — User I/O pin |
| Pin produk 179 | I/O — User I/O pin |
| Pin produk 180 | I/O — User I/O pin |
| Pin produk 181 | I/O — User I/O pin |
| Pin produk 182 | I/O — User I/O pin |
| Pin produk 183 | I/O — User I/O pin |
| Pin produk 184 | I/O — User I/O pin |
| Pin produk 185 | I/O — User I/O pin |
| Pin produk 186 | I/O — User I/O pin |
| Pin produk 187 | I/O — User I/O pin |
| Pin produk 188 | I/O — User I/O pin |
| Pin produk 189 | I/O — User I/O pin |
| Pin produk 190 | I/O — User I/O pin |
| Pin produk 191 | I/O — User I/O pin |
| Pin produk 192 | I/O — User I/O pin |
| Pin produk 193 | I/O — User I/O pin |
| Pin produk 194 | I/O — User I/O pin |
| Pin produk 195 | I/O — User I/O pin |
| Pin produk 196 | I/O — User I/O pin |
| Pin produk 197 | I/O — User I/O pin |
| Pin produk 198 | I/O — User I/O pin |
| Pin produk 199 | I/O — User I/O pin |
| Pin produk 200 | I/O — User I/O pin |
| Pin produk 201 | I/O — User I/O pin |
| Pin produk 202 | I/O — User I/O pin |
| Pin produk 203 | I/O — User I/O pin |
| Pin produk 204 | I/O — User I/O pin |
| Pin produk 205 | I/O — User I/O pin |
| Pin produk 206 | I/O — User I/O pin |
| Pin produk 207 | I/O — User I/O pin |
| Pin produk 208 | I/O — User I/O pin |
| Pin produk 209 | I/O — User I/O pin |
| Pin produk 210 | I/O — User I/O pin |
| Pin produk 211 | I/O — User I/O pin |
| Pin produk 212 | I/O — User I/O pin |
| Pin produk 213 | I/O — User I/O pin |
| Pin produk 214 | I/O — User I/O pin |
| Pin produk 215 | I/O — User I/O pin |
| Pin produk 216 | I/O — User I/O pin |
| Pin produk 217 | I/O — User I/O pin |
| Pin produk 218 | I/O — User I/O pin |
| Pin produk 219 | I/O — User I/O pin |
| Pin produk 220 | I/O — User I/O pin |
| Pin produk 221 | I/O — User I/O pin |
| Pin produk 222 | I/O — User I/O pin |
| Pin produk 223 | I/O — User I/O pin |
| Pin produk 224 | I/O — User I/O pin |
| Pin produk 225 | I/O — User I/O pin |
| Pin produk 226 | I/O — User I/O pin |
| Pin produk 227 | I/O — User I/O pin |
| Pin produk 228 | I/O — User I/O pin |
| Pin produk 229 | I/O — User I/O pin |
| Pin produk 230 | I/O — User I/O pin |
| Pin produk 231 | I/O — User I/O pin |
| Pin produk 232 | I/O — User I/O pin |
| Pin produk 233 | I/O — User I/O pin |
| Pin produk 234 | I/O — User I/O pin |
| Pin produk 235 | I/O — User I/O pin |
| Pin produk 236 | I/O — User I/O pin |
| Pin produk 237 | I/O — User I/O pin |
| Pin produk 238 | I/O — User I/O pin |
| Pin produk 239 | I/O — User I/O pin |
| Pin produk 240 | I/O — User I/O pin |
Aplikasi Umum
EPF6024AQC240-4N cocok untuk 6 aplikasis: ISA-to-PCI Bus Bridge, Custom Peripheral Controller, State Machine Engine, ASIC Prototype / Gate Array Emulation, Legacy Embedded System Glue Logic, JTAG-Based Boundary-Scan Test Platform.
ISA-to-PCI Bus Bridge
The EPF6024AQC240-4N's 1,960 logic elements and 199 user I/Os make it a natural fit for ISA-to-PCI bus bridges in legacy industrial PCs and embedded motherboards. With the -4 speed grade's internal frequency of ~172 MHz, the device can keep up with 33 MHz PCI transactions while emulating ISA cycle timing. The 240-pin PQFP package provides ample I/O to break out both 16-bit ISA (address + data + control) and 32-bit PCI (AD[31:0], C/BE[3:0], FRAME, IRDY, TRDY, DEVSEL) buses simultaneously without external multiplexing. This is a typical glue-logic role where the FLEX 6000 family was originally targeted, replacing custom gate arrays at lower NRE cost.
Direkomendasikan
Custom Peripheral Controller
The EPF6024AQC240-4N's 196 LABs and fast -4 speed grade suit custom peripheral controllers (such as industrial I/O expansion cards, parallel-port emulators, and bespoke printer controllers) where the BOM must be flexible but the volume does not justify a mask-programmed gate array. The 199 user I/Os at 5 V tolerance simplify interfacing to legacy TTL peripherals without external buffers. Configuration via JTAG enables in-system firmware upgrades in the field, important for industrial controller longevity. Note that new designs should target Cyclone IV instead of the obsolete FLEX 6000 family.
Direkomendasikan
State Machine Engine
With 1,960 LUT-based logic elements and the FastTrack continuous routing architecture, the EPF6024AQC240-4N is well suited to implementing large FSMs and protocol state machines such as UART, SPI, I2C, HDLC, or proprietary serial protocols. The -4 speed grade delivers the lowest propagation delay in the FLEX 6000 family, ensuring the state machine can meet tight bit-period timing at high baud rates. The 199 user I/Os allow multiple channels to be aggregated without external muxing, and the JTAG port enables on-the-fly state-machine redefinition during bring-up.
Direkomendasikan
ASIC Prototype / Gate Array Emulation
The EPF6024AQC240-4N was explicitly designed by Altera as a low-cost programmable alternative to mask-programmed gate arrays in prototyping and low-volume production. With 24,000 typical gates, designers can map their intended ASIC netlist into the FLEX 6000 LUT fabric, validate timing in real silicon, and iterate by re-programming until the design stabilizes - then commit to a gate-array mask set. The PQFP-240 package mirrors the pin-count of many mid-density QFP gate arrays of the era, easing pin-compatibility testing.
Direkomendasikan
Legacy Embedded System Glue Logic
The EPF6024AQC240-4N's PQFP-240 footprint and 5 V tolerant I/Os suit legacy embedded systems (industrial controllers, point-of-sale terminals, medical instruments, military avionics) where a custom glue-logic FPGA has been qualified for decades. The 3.3 V core plus 5 V tolerant I/O allows direct connection to TTL/CMOS peripherals without level shifters, simplifying board layout. Designers maintaining long-lifecycle products can rely on the FLEX 6000 family until the part is replaced by a Cyclone IV migration.
Direkomendasikan
JTAG-Based Boundary-Scan Test Platform
The EPF6024AQC240-4N's full IEEE 1149.1 JTAG support makes it useful as a boundary-scan and in-system configurability node on legacy boards. The dedicated TCK, TMS, TDI, TDO pins allow it to act as either a master or slave in the JTAG chain, simplifying board-level interconnect test. Combined with its 199 user I/Os, the device can drive enough signals to serve as a generic boundary-scan controller for medium-complexity boards.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk EPF6024AQC240-4N — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | EPF6024AQC240-4 | EPF6024AQC240-3N | EPF6024AQC240-2N | EPF6024AQC240-1N | EPF6024AQC240-3S |
|---|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | PQFP-240 | PQFP-240 - same | PQFP-240 - same | PQFP-240 - same | PQFP-240 - same | PQFP-240 - same |
| Speed Grade | -4 (fastest) | -4 (fastest) - same | -3 (one grade slower) | -2 | -1 (slowest) | -3 |
| Logic Elements | 1,960 | 1,960 - same | 1,960 - same | 1,960 - same | 1,960 - same | 1,960 - same |
| User I/Os | 199 | 199 - same | 199 - same | 199 - same | 199 - same | 199 - same |
| Lead Finish | Lead-free (N suffix) | Leaded (non-N) | Lead-free - same | Lead-free - same | Lead-free - same | Lead-free (S finish) |
| Core Voltage | 3.3 V | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Param Match (%) | 100 | 95 | 90 | 80 | 70 | 90 |
Diferensiator Kunci
- Fastest speed grade in the FLEX 6000 family (vsEPF6024AQC240-3N)
- Lead-free finish for RoHS-compliant designs (vsEPF6024AQC240-4)
- Largest available I/O count in FLEX 6000 family (vsEPF6024AQC208-3)
Catatan Desain
The EPF6024AQC240-4N requires a clean 3.3 V core supply (VCCINT) plus a separate 3.3 V I/O supply (VCCIO), both at 5 V tolerance on the I/O side. Decouple each VCCINT/VCCIO pin with a 0.1 uF ceramic capacitor placed as close as possible to the package, and add bulk 10 uF tantalum or polymer capacitors near the device. The FLEX 6000 family is sensitive to supply noise during configuration; an unstable VCCINT will cause configuration failures.
The FLEX 6000 family is obsolete and at the end of its lifecycle. Plan a last-time-buy or migrate to a Cyclone IV EP4CE6/EP4CE10 FPGA for any new design. Note that the bitstream format is NOT compatible between FLEX 6000 and Cyclone families - design recompilation in Quartus is mandatory when migrating. Configuration EEPROMs (such as EPC2 or EPC4) used for FLEX 6000 are also obsolete.
The PQFP-240 package has 0.5 mm lead pitch with gull-wing leads - follow standard JEDEC MS-026 land-pattern recommendations. Route all 199 user I/O signals on the top layer where possible to keep stub lengths short. Add a continuous ground plane on the inner layer directly beneath the device for return-path integrity. Leave the JTAG chain accessible via a 4-pin header (TCK, TMS, TDI, TDO) to enable in-system reconfiguration.
Estimated: at maximum toggle activity (~80% of LEs switching at 100 MHz), the FLEX 6000 EPF6024A can dissipate up to ~1.5 W. With the PQFP-240 package's theta_JA of approximately 25 C/W (typical JEDEC test board), junction temperature rises about 38 C above ambient - well within the 0C to +70C commercial range. For sealed enclosures with no airflow, derate clock frequency or reduce utilization to keep Tj below 85 C.
Informasi Konformitas
The N suffix denotes lead-free (Pb-free) finish per Altera's standard part-numbering convention. RoHS and REACH compliance inherited from the lead-free finish. The part is obsolete (Altera NRND/EOL).