EPF10K100BQC208-1 - 100K FLEX FPGA 6144 RAM 208-PQFP | Altera
MPN: EPF10K100BQC208-1 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $38.5 | $38.50 |
| 10 | $32.75 | $327.50 |
| 100 | $27.4 | $2,740.00 |
| 500 | $23.9 | $11,950.00 |
| 1,000 | $21.2 | $21,200.00 |
EPF10K100BQC208-1 Overview
Background: A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit composed of an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that designers can reconfigure after manufacture to implement arbitrary digital logic. FPGAs sit above general-purpose microcontrollers and below custom ASICs in the design complexity pyramid - they offer higher integration than discrete logic but lower per-unit cost than a full ASIC at low volume. Within that hierarchy, the FLEX 10K family is positioned as a high-density programmable logic device (PLD) using a fine-grained architecture with embedded array blocks (EABs) that can be configured as memory or wide fan-in logic, giving it DSP-friendly characteristics for its generation.
Key features of the EPF10K100BQC208-1 include 6144 total RAM bits organized as 576 logic elements with embedded memory, a single 5 V supply rail, an internal combinatorial propagation delay quoted at 11 ns for representative loading conditions, and a 208-pin PQFP plastic package with gull-wing leads. The device is reconfigurable in-system via SRAM configuration cells, allowing unlimited reprogramming cycles during development and in-field updates.
From an architectural standpoint, the FLEX 10K device uses a continuous SRAM routing structure called the FastTrack interconnect, which provides predictable timing across all logic paths - a meaningful advantage over older segmented interconnect architectures. Each logic element contains a 4-input look-up table, a programmable flip-flop, and a carry chain for fast arithmetic, while embedded array blocks provide 2 Kbit memory blocks usable as RAM, ROM, or wide function generators.
Typical applications include glue logic replacement, custom state-machine controllers, interface bridges between microprocessors and peripherals, DSP preprocessing blocks, and legacy industrial-control upgrades where the 5 V-tolerant I/O and PQFP-208 footprint simplify PCB integration. Designers using this device typically work with the Altera MAX+PLUS II or Quartus MAX+PLUS legacy toolchain.
Design consideration: because the configuration is volatile SRAM, the FPGA must be loaded from a serial or parallel configuration EPROM on every power-up, and in-system reprogramming must respect the CONF_DONE handshake timing defined in the FLEX 10K datasheet family. Engineers planning a new design around this part should also evaluate Cyclone or MAX II families as lower-cost 5 V-tolerant alternatives where pin count is moderate.
This page consolidates distributor pricing, 208-PQFP drop-in alternatives within the FLEX 10K family, and practical configuration/PCB design notes not all gathered in a single place on the original datasheet.
Drop-in alternatives for EPF10K100BQC208-1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with EPF10K100BQC208-1 (same form factor and footprint) — differing in Total RAM Bits, Series, Operating Temperature, Configuration Method, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPF10K100BQC208-2
✅ Drop-In✓ In Stock
$82 / Unit
View Datasheet →EPF10K100BQC208-3
✅ Drop-In✓ In Stock
$24.5 / Unit
View Datasheet →EPF10K100BQC208-1N
✅ Drop-In📋 Reference alternative (not in catalog)
EPF10K100BQC208-1 Maximum Ratings & Electrical Characteristics
| Series | FLEX-10K |
| Family | FLEX 10K (SRAM-based FPGA) |
| Logic Elements | 576 |
| Total RAM Bits | 6144 |
| Supply Voltage | 4.75 V to 5.25 V |
| Combinatorial tpd (typ.) | 11 ns |
| Speed Grade | -1 |
| Package | 208-BFQFP (PQFP-208, 28x28 mm) |
| Mounting Type | Surface Mount |
| Configuration Memory | SRAM (volatile, in-system reconfigurable) |
EPF10K100BQC208-1 208-bfqfp (pqfp-208, 28x28 mm) Pin Configuration Guide
Pin configuration for EPF10K100BQC208-1 (208-bfqfp (pqfp-208, 28x28 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for EPF10K100BQC208-1.
Refer to the datasheet for full pin configuration.
Typical Applications
EPF10K100BQC208-1 is suitable for 6 applications: Legacy 5 V Glue Logic Replacement, Industrial Control State Machine, Custom Microprocessor Peripheral Bridge, DSP Preprocessing Block, Interface Protocol Translator, Legacy Aerospace and Defense Avionics Bus.
Legacy 5 V Glue Logic Replacement
The EPF10K100BQC208-1's 5 V-tolerant I/O and 576 logic elements make it ideal for replacing discrete 74-series glue logic on legacy PCBs. Its 6144 RAM bits and EAB-based architecture allow compact state-machine and bus-arbiter designs that previously required dozens of TTL packages. The 208-PQFP footprint fits the same board area as a small array of standard-logic ICs while providing reprogrammable behavior, shortening debug cycles. Designers typically use MAX+PLUS II to compile the design and a serial configuration EPROM for stand-alone boot.
Recommended
Industrial Control State Machine
With 576 logic elements and deterministic FLEX 10K FastTrack interconnect routing, the EPF10K100BQC208-1 suits industrial-control state machines where predictable timing matters more than raw gate count. The 5 V supply rails simplify integration with 5 V sensors, relay drivers, and HMI displays. Industrial designs benefit from the industrial-temperature EPF10K100BQC208-1N variant, which has the same 208-PQFP footprint but extended operating range for factory-floor deployments.
Recommended
Custom Microprocessor Peripheral Bridge
The EPF10K100BQC208-1's 6144 RAM bits and 576 logic elements are well-matched to bridge custom peripherals to legacy 8-bit and 16-bit microprocessors. Designers use the FLEX 10K EABs as dual-port RAM buffers between the CPU bus and DMA channels, while the programmable I/O cells handle the voltage translation between 5 V micro and 3.3 V peripherals. The 208-PQFP package gives enough I/O for 24-32 address/data signals plus interrupt and DMA handshaking.
Recommended
DSP Preprocessing Block
FLEX 10K EABs can be configured as wide multipliers and adders, letting the EPF10K100BQC208-1 serve as a fixed-point DSP preprocessing engine for FIR filters or correlation blocks in audio and baseband designs. The 11 ns typical tpd on the -1 speed grade is sufficient for many kHz-range DSP tasks when pipelined across multiple logic elements. Designers pair it with an external DAC and use the FLEX 10K's parallel configuration mode for fast boot from a parallel EPROM.
Recommended
Interface Protocol Translator
The EPF10K100BQC208-1's reprogrammable I/O cells let it translate between legacy interfaces such as ISA bus, PC/104, or VME on one side and modern peripherals on the other. The 208-PQFP package provides enough I/O for a 16-bit data bus plus address, control, and interrupt signals. With its 5 V tolerance, the part can sit directly on legacy 5 V buses without external level shifters, simplifying mixed-voltage board designs.
Recommended
Legacy Aerospace and Defense Avionics Bus
Long-lifecycle aerospace and defense programs still rely on the EPF10K100BQC208-1 because of its 5 V tolerance, mature MAX+PLUS II toolchain, and field-proven reliability. The 208-PQFP package supports high-vibration environments when properly underfilled or socketed. Many defense OEMs continue to maintain bitstream IP for this device, and authorized legacy distributors like Rochester Electronics guarantee multi-decade supply continuity for these programs.
Recommended
Recommended Products Summary
Engineering reference data for EPF10K100BQC208-1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPF10K100BQC208-2 | EPF10K100BQC208-3 | EPF10K100BQC208-1N |
|---|---|---|---|---|
| Package | 208-BFQFP (PQFP-208, 28x28 mm) | 208-BFQFP (PQFP-208) - same | 208-BFQFP (PQFP-208) - same | 208-BFQFP (PQFP-208) - same |
| Brand | Altera (Intel) | Altera (Intel) - same | Altera (Intel) - same | Altera (Intel) - same |
| Series | FLEX 10K | FLEX 10K - same | FLEX 10K - same | FLEX 10K - same |
| Speed Grade | -1 (slowest) | -2 (faster) | -3 (fastest) | -1N (industrial temp) |
| Logic Elements | 576 | 576 | 576 | 576 |
| Total RAM Bits | 6144 | 6144 | 6144 | 6144 |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Temperature Grade | Commercial | Commercial | Commercial | Industrial/Extended |
Key Differentiators
- Slowest speed grade (-1) maximizes timing margin for low-speed legacy interfaces (vs EPF10K100BQC208-2)
- Identical 208-PQFP footprint simplifies PCB reuse across speed grades (vs EPF10K100BQC208-3)
- Industrial/extended temperature option in the same package (vs EPF10K100BQC208-1N)
Design Notes
Estimated: based on a typical FLEX 10K Icc of roughly 50-150 mA standby plus dynamic current proportional to toggle rate, a 5 V EPF10K100BQC208-1 design should budget at least 1 A of 5 V supply capacity per device, with bulk decoupling (47 uF or larger tantalum) near the VCC pins and 0.1 uF ceramic caps within 5 mm of every VCC/ground pair. Because the configuration is volatile SRAM, inrush during configuration can spike higher; size the regulator so it does not sag below 4.75 V during config.
The 208-PQFP package has a 0.5 mm lead pitch and gull-wing leads, which requires careful PCB layout: keep all traces at least 0.2 mm from the package edges, use solder mask dams between pads, and follow the Altera-recommended land pattern from the FLEX 10K datasheet family. Add a low-impedance ground pour directly under the package to reduce ground bounce. Use a socket (e.g. Yamaichi IC149-208) if you need to swap FPGAs during development without rework.
Do not assume the FLEX 10K bitstream is compatible with Cyclone, MAX, or any newer Intel/Altera device - the configuration formats are completely different and a wrong bitstream can leave the device unconfigured or in a high-Icc state. Always generate the bitstream in MAX+PLUS II or the legacy Quartus MAX+PLUS flow matched to the FLEX 10K device ID. Also confirm that the CONF_DONE pin rises within the datasheet-specified timeout, or the host microcontroller will misinterpret a failed configuration as a logic hang.
Compliance Information
Compliance data was not provided in the verified web data. The original PQFP-208 part predates many modern compliance declarations; contact the legacy distributor (Rochester Electronics) for the specific compliance certificate of the lot you receive.
