EPF81188AQC208-3 - FLEX 8000 FPGA, 12K Gates, 148 I/O, 208-BFQFP | Intel / Altera
MPN： EPF81188AQC208-3 ✗ 停產EPF81188AQC208-3 概覽
Key features include 126 Logic Array Blocks (LABs) per device, in-circuit reconfigurability (ICR) that allows the FPGA to be re-programmed on the board without removing the part, and the MultiVolt I/O interface that lets the device drive either 3.3V or 5.0V outputs by selecting the VCCIO rail, providing easy bridging between legacy 5V peripherals and modern 3.3V ASICs. Each LE contains a 4-input look-up table, a programmable register, and dedicated carry and cascade chains.
The FLEX 8000 architecture employs a continuous, predictable routing fabric called the FastTrack Interconnect, which provides horizontal and vertical routing resources connecting every LAB to every other LAB with uniform delay, simplifying timing closure. Continuous Interconnect tiles span the full device, eliminating segmented-routing bottlenecks found in earlier CPLDs and enabling deterministic high-frequency design.
Typical applications include glue logic and bus interfacing, custom state-machine controllers, peripheral protocol bridges (UART, I2C, SPI multiplexing), legacy 5V system integration, prototyping of ASIC functions, and high-I/O parallel processing interfaces. The 148 user I/Os in a 208-pin QFP package provide ample pin budget for parallel data buses.
When designing with the EPF81188AQC208-3, note that the device requires two supply rails: VCCINT (5V core) and VCCIO (3.3V or 5V I/O). All unused I/O pins should be left floating or tied to ground per the datasheet to minimize leakage, and configuration must be loaded via the Altera MAX+plus II or Quartus development flow using a serial or parallel EPROM.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations for the EPF81188AQC208-3 in a single reference not found in the original Altera datasheet PDF.
直接替換替代品，適用於 EPF81188AQC208-3 — 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： EPF81188AQC208-3 （相同外形與佔位） — 差異在於 Operating Temperature, Configuration Method, Package, Mounting Type, Process Technology.
EPF81188AQC208-2
✅ 直接替換聯絡詢價
查看資料表 →EPF81188AQC208-4
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPF81188AQC208-1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
EPF81188AQC208-3 最大額定值與電氣特性
| Family | FLEX 8000 |
| Logic Family | CMOS |
| Usable Gates | 12,000 |
| Logic Elements (LEs) | 1,008 |
| Logic Array Blocks (LABs) | 126 |
| User I/Os | 148 |
| Package Type | 208-BFQFP (Plastic QFP) |
| Pins | 208 |
| Supply Voltage (VCCINT) | 5 V |
| I/O Supply Voltage (VCCIO) | 3.3 V or 5.0 V (MultiVolt) |
| 工作溫度 | 0 C to +70 C (Commercial) |
| Speed Grade | -3 |
| In-Circuit Reconfigurability | Yes (ICR) |
| 安裝類型 | Surface Mount |
| Process Technology | CMOS SRAM |
EPF81188AQC208-3 腳位配置
| 腳位 1 | I/O — User I/O (bank-dependent VCCIO) |
| 腳位 2 | I/O — User I/O (bank-dependent VCCIO) |
| 腳位 3 | VCCINT — 5V core supply |
| 腳位 4 | I/O — User I/O |
| 腳位 5 | I/O — User I/O |
| 腳位 6 | GND — Ground |
| 腳位 7 | I/O — User I/O |
| 腳位 8 | I/O — User I/O |
| 腳位 9 | VCCIO — I/O supply (3.3V or 5V) |
| 腳位 10 | I/O — User I/O |
| 腳位 11 | I/O — User I/O |
| 腳位 12 | GND — Ground |
| 腳位 13 | nCONFIG — Configuration control (active low) |
| 腳位 14 | nSTATUS — Configuration status (active low) |
| 腳位 15 | CONF_DONE — Configuration done indicator |
| 腳位 16 | DCLK — Configuration clock input |
| 腳位 17 | DATA0 — Configuration data input (PS mode) |
| 腳位 18 | MSEL0 — Configuration mode select 0 |
| 腳位 19 | MSEL1 — Configuration mode select 1 |
| 腳位 20 | GND — Ground |
典型應用
EPF81188AQC208-3 適用於 6 應用s: Glue Logic and Bus Interfacing, Custom State-Machine Controllers, Peripheral Protocol Bridges (UART / SPI / I2C Multiplexers), Legacy 5V System Integration, ASIC Function Prototyping, High-I/O Parallel Processing Interfaces.
Glue Logic and Bus Interfacing
The EPF81188AQC208-3 is well suited as a glue-logic bridge between mismatched parallel buses. With 148 user I/Os and MultiVolt I/O support (3.3V or 5V VCCIO), the device can simultaneously interface a 5V legacy peripheral to a 3.3V processor without external level shifters. The 12K usable gates are typically sufficient for address decoding, wait-state generation, and chip-select logic. Designers typically allocate 60-70% of LEs for combinatorial decode and 30-40% for registered handshake logic.
推薦
Custom State-Machine Controllers
FLEX 8000's LAB-based architecture with 4-input LUTs and dedicated per-LE registers makes the EPF81188AQC208-3 a strong platform for complex state machines. The 1,008 logic elements accommodate 10-20 large state machines with 16-32 states each, while the 126 LABs provide predictable routing for high-fanout control signals. Designers commonly use the device in industrial-control front-ends, motor-control sequencers, and protocol bridges where deterministic timing is critical.
推薦
Peripheral Protocol Bridges (UART / SPI / I2C Multiplexers)
The 148 I/O pins and abundant logic resources of the EPF81188AQC208-3 enable multi-protocol bridging tasks such as UART-to-SPI, I2C-to-parallel, and SPI multiplexing. Each LAB cluster can host an independent serial engine, while the global FastTrack Interconnect routes control signals with uniform delay. The device's 5V-tolerant I/Os interface directly to legacy RS-232 transceivers and 5V sensors without external protection.
推薦
Legacy 5V System Integration
When modernizing or extending systems built around 5V microprocessors and peripherals, the EPF81188AQC208-3 provides a 5V-tolerant I/O interface that does not require level shifting. The device can act as a co-processor or peripheral controller alongside 8051, 68k, or Z80 host CPUs, providing interrupt arbitration, DMA handshaking, and memory-mapping functions. The MultiVolt feature also allows one FPGA to drive both 5V and 3.3V rails on the same board.
推薦
ASIC Function Prototyping
Engineers historically used the EPF81188AQC208-3 to prototype mid-complexity ASICs because of its 12,000 usable gates, deterministic timing, and in-circuit reconfigurability (ICR). A design implemented in FLEX 8000 can be migrated to a gate-array or cell-based ASIC once validated, with the FPGA serving as a bit-accurate functional model. The 208-BFQFP package provides test points on all four sides for oscilloscope probing during validation.
推薦
High-I/O Parallel Processing Interfaces
With 148 user I/Os, the EPF81188AQC208-3 is suitable for parallel data acquisition, image preprocessing front-ends, and multi-channel ADC/DAC interfacing. Each LE can be configured as a small arithmetic unit, enabling simple parallel MAC operations at moderate throughput. Combined with the device's 5V tolerance, it interfaces directly to industrial-grade parallel ADCs and camera-link receivers without external buffers.
推薦
推薦產品摘要
工程參考資料，適用於 EPF81188AQC208-3 — 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 | EPF81188AQC208-2 | EPF81188AQC208-4 | EPF81188AQC208-1 |
|---|---|---|---|---|
| Brand | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera |
| Package | 208-BFQFP | 208-BFQFP - same | 208-BFQFP - same | 208-BFQFP - same |
| Usable Gates | 12,000 | 12,000 | 12,000 | 12,000 |
| Logic Elements | 1,008 | 1,008 | 1,008 | 1,008 |
| LABs | 126 | 126 | 126 | 126 |
| User I/Os | 148 | 148 | 148 | 148 |
| Speed Grade | -3 | -2 (faster) | -4 (slower) | -1 (fastest) |
| Operating Temperature | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) |
主要差異化特點
- Same-package faster speed grade available (對比EPF81188AQC208-2)
- MultiVolt I/O supports mixed-voltage buses (對比EPF81188AGC232-4N (PGA variant))
- In-circuit reconfigurability for field updates (對比MAX 7000 CPLDs (EPM7128SQC100-10))
設計說明
The EPF81188AQC208-3 requires two supply rails: VCCINT at 5V (+/-5%) for the core logic and VCCIO at 3.3V or 5V for the I/O banks. Both rails must be present for proper operation - VCCIO can be sequenced before or after VCCINT, but VCCINT must reach stable 5V before configuration begins. Decouple each VCCINT pin with a 0.1uF ceramic placed within 5mm, and each VCCIO pin with the same. Add a bulk 47uF tantalum or 100uF aluminum electrolytic at the supply entry to suppress FPGA inrush current during configuration.
Layout the 208-BFQFP with a continuous ground plane on layer 2 to provide a low-impedance return path for the 148 high-speed I/Os. Route all configuration signals (DCLK, nCONFIG, nSTATUS, CONF_DONE, DATA0) on the same layer with controlled impedance, and keep them away from switching I/O traces. Place the configuration EPROM within 100mm of DCLK and DATA0 to minimize skew. FLEX 8000 JTAG signals (TMS, TDI, TDO, TCK) should each have a 10k pull-up on TMS and TDI for reliable boundary-scan operation.
All unused user I/O pins must be left floating or tied to ground - leaving them floating with VCCIO applied can cause leakage current of several hundred microamps per pin and may cause configuration failure. Do not exceed VCCIO voltage during programming - use a level translator if the host MCU runs at 3.3V and the FPGA's VCCIO is set to 5V. The FLEX 8000 is a 5V core device, so never back-power VCCIO before VCCINT reaches the 4.75V threshold or the I/O buffers can latch-up.
合規資訊
The FLEX 8000 family was introduced in the mid-1990s, before RoHS compliance was standard. The original AQC208-3 is likely not RoHS compliant - only later -N suffixed variants carry RoHS compliance. Designers should verify with the distributor's lot documentation.
