XC2C256-7PQ208C - 256-Macrocell CoolRunner-II CPLD | AMD/Xilinx
MPN： XC2C256-7PQ208C ✓ 啟用中XC2C256-7PQ208C 概覽
A CPLD (Complex Programmable Logic Device) is a family of programmable logic ICs that sits above SPLDs such as GAL and PAL devices in the programmable-logic hierarchy, below FPGAs in density. CPLDs use a deterministic, macrocell-based architecture that delivers pin-to-pin timing predictability, making them the standard choice for glue logic, bus interfacing, power-up state control, and address decoding in embedded systems.
The XC2C256 distinguishes itself with an ultra-low-power 0.18-micron CMOS process: unlike CPLDs based on analog sense amplifiers, CoolRunner-II uses a pure digital design technique that keeps standby current in the microampere class, a key reason designers select it for portable and battery-powered equipment. The -7 speed grade supports 152 MHz system frequency operation with deterministic pin-to-pin delays, and the device operates from a nominal 1.8V core supply (1.7V to 1.9V per manufacturer data).
Architecturally, the 256 macrocells are organized into function blocks interconnected by the Advanced Interconnect Matrix (AIM), providing full, predictable connectivity. I/O banks support multiple I/O standards and the device includes Schmitt-trigger inputs, optional output slew control, and IEEE 1149.1 boundary-scan programming via the JTAG port.
Typical applications include telecommunications line-card control logic, industrial control sequencing, portable consumer electronics, bus bridging, and boot-logic/state-machine control alongside larger FPGAs. The commercial temperature variant (C suffix, 0C to +70C) suits office and indoor industrial environments.
For design, remember that CoolRunner-II is powered from a single 1.8V core rail; verify that your board can supply this rail and observe the datasheet power-decoupling guidance. Program the device with the AMD/Xilinx toolchain over JTAG, and reserve JTAG header space in the layout for in-system programming.
This page adds value beyond the manufacturer datasheet DS094 by consolidating distributor stock channels, same-footprint temperature-grade alternatives, drop-in replacement guidance, and practical design notes in one place.
直接替換替代品，適用於 XC2C256-7PQ208C — 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： XC2C256-7PQ208C （相同外形與佔位） — 差異在於 Configuration Memory, Package, Temperature Grade.
XC2C256-7PQ208I
✅ 直接替換聯絡詢價
查看資料表 →XC2C256-7PQG208C
✅ 直接替換📋 參考替代品（不在目錄中）
XC2C256-6PQ208C
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
XC2C256-7PQ208C 最大額定值與電氣特性
| Manufacturer Part Number | XC2C256-7PQ208C |
| Family | CoolRunner-II |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 256 |
| Usable Gates | 6,000 |
| Maximum System Frequency | 152 MHz |
| Speed Grade | -7 |
| Core Supply Voltage (VCCINT) | 1.8 V nominal (1.7 V to 1.9 V) |
| Process Technology | 0.18 um CMOS |
| 封裝 | 208-pin PQFP (PQ208, FQFP, gull-wing) |
| 安裝類型 | Surface Mount |
| 工作溫度 | 0C to +70C (Commercial, C suffix) |
| Temperature Grade | Commercial |
| Programming Interface | JTAG (IEEE 1149.1 boundary scan) |
| Configuration Memory | Non-volatile on-chip |
XC2C256-7PQ208C 208-pin pqfp (pq208, fqfp, gull-wing) 腳位配置指南
XC2C256-7PQ208C（208-pin pqfp (pq208, fqfp, gull-wing) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： XC2C256-7PQ208C.
請參閱 資料表 以查看完整腳位配置。
典型應用
XC2C256-7PQ208C 適用於 6 應用s: Glue Logic and Bus Interfacing, Telecommunications Equipment, Industrial Control and Automation, Portable and Battery-Powered Electronics, FPGA Boot and Configuration Control, Consumer Electronics Logic Integration.
Glue Logic and Bus Interfacing
The XC2C256-7PQ208C is a natural fit for glue logic: with 256 macrocells and deterministic CoolRunner-II timing, it absorbs address decoding, chip-select generation, bus multiplexing, and wait-state logic that would otherwise require many 74-series devices. The -7 speed grade supports 152 MHz operation, so bus turnaround delays stay predictable and fixed - a key advantage over FPGA-based solutions where timing closure adds design effort. Placed between a processor and peripheral banks, the CPLD provides instant-on logic at power-up because CoolRunner-II is non-volatile, eliminating configuration delay. Its 208-pin PQ208 package supplies abundant I/O for wide buses, and microamp-class standby current keeps the board's idle power budget intact in mixed-signal systems.
推薦
Telecommunications Equipment
Telecom line cards and backplane controllers rely on the XC2C256-7PQ208C for control-sequencing, alarm aggregation, and framing-logic support. Manufacturer positioning lists telecommunications as a primary CoolRunner-II market, and the CPLD's deterministic pin-to-pin delays simplify meeting backplane timing budgets at the -7 grade's 152 MHz ceiling. The 1.8V core supply reduces on-card power distribution demands, while the 208-pin PQFP offers enough user I/O to fan out signals across multiple line-card connectors. In practice the device sits beside the line-card FPGA or processor, handling board-reset sequencing, LED/relay supervision, and hot-swap control logic. Its non-volatile configuration means control logic is alive the instant power is applied - essential for network equipment that must signal alarm states during boot.
推薦
Industrial Control and Automation
Industrial controllers use the XC2C256-7PQ208C for interlock logic, sensor debounce, motor-control state machines, and safety sequencing. The CoolRunner-II architecture's predictable, fixed delays make interlock timing auditable - important in machinery control where deterministic behavior matters - while 256 macrocells absorb multiple independent state machines in one device. Operating from a 1.8V core with microamp standby current, the CPLD suits always-on supervision circuits that must run from backup power. Note that the C suffix is rated 0C to +70C; for factory floors, uncontrolled cabinets, or outdoor enclosures, choose the pin-identical industrial-grade XC2C256-7PQ208I rated -40C to +85C, which drops onto the same PCB footprint with no redesign. Design files programmed via JTAG can be re-flashed in-system for field updates.
推薦
Portable and Battery-Powered Electronics
The CoolRunner-II family was engineered specifically for low-power portable applications, and the XC2C256-7PQ208C carries that advantage into handheld instruments, portable test gear, and battery-operated consumer devices. Its 0.18um CMOS digital architecture keeps standby current in the microampere class - orders of magnitude below conventional CPLDs that use analog sense-amplifier techniques - directly extending battery runtime in systems where the CPLD stays powered between operations. The single 1.8V core rail integrates cleanly into modern low-voltage battery power trees, and the non-volatile configuration delivers instant-on user I/O the moment the device wakes. The -7 grade's 152 MHz capability covers demanding timing functions such as display timing generation and keypad scanning without sacrificing power efficiency.
推薦
FPGA Boot and Configuration Control
In FPGA-based systems, the XC2C256-7PQ208C frequently acts as the configuration supervisor: it sequences power rails, holds the FPGA in reset until clocks are stable, decodes boot-mode strapping, and routes JTAG multiplexing between the FPGA and a processor. These roles exploit CoolRunner-II strengths - instant-on non-volatile logic that is functional before the FPGA finishes loading, fixed delays for deterministic reset timing, and ample I/O on the 208-pin PQFP for rail monitors and status lines. The microamp standby current matters because supervision logic typically runs continuously from an always-on rail. Placing this CPLD beside the FPGA's configuration PROM creates a robust power-good and reset-assertion chain that discrete logic would otherwise need dozens of gates to implement.
推薦
Consumer Electronics Logic Integration
Consumer platforms - set-top boxes, display controllers, and smart appliances - use the XC2C256-7PQ208C to consolidate scattered discrete logic into one programmable device, cutting board area, inventory lines, and BOM cost. The CPLD handles panel timing assist, button and IR debounce, LED muxing, and interface adaptation between incompatible voltage domains using CoolRunner-II flexible I/O banks. The 1.8V core fits modern consumer power architectures, and the commercial 0C to +70C rating matches indoor consumer environments. Because the design is programmed rather than hard-wired, late-stage feature changes and cost-down respins are absorbed by reprogramming the same silicon, protecting the production schedule. The 208-pin PQFP's gull-wing leads are compatible with standard SMT assembly for high-volume lines.
推薦
推薦產品摘要
工程參考資料，適用於 XC2C256-7PQ208C — 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 | XC2C256-7PQ208I | XC2C256-7PQG208C | XC2C256-6PQ208C |
|---|---|---|---|---|
| Package | 208-pin PQFP (PQ208) | 208-pin PQFP (PQ208) - same | 208-pin PQFP (PQG208) - same footprint | 208-pin PQFP (PQ208) - same |
| Brand | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) |
| Macrocells | 256 | 256 | 256 | 256 |
| Usable Gates | 6,000 | 6,000 | 6,000 | 6,000 |
| Speed Grade | -7 | -7 | -7 | -6 |
| Core Supply Voltage | 1.8 V (1.7-1.9 V) | 1.8 V (1.7-1.9 V) | 1.8 V (1.7-1.9 V) | 1.8 V (1.7-1.9 V) |
| Operating Temperature | 0C to +70C | -40C to +85C | 0C to +70C | 0C to +70C |
主要差異化特點
- Ultra-low standby power (對比Conventional high-static-current CPLDs)
- Industrial-grade drop-in available (對比XC2C256-7PQ208I)
- Deterministic timing at 152 MHz (對比XC2C256-6PQ208C)
設計說明
Estimate the core power budget conservatively: the XC2C256-7PQ208C runs from a nominal 1.8V rail (1.7V-1.9V per manufacturer data), and CoolRunner-II standby current is microamp-class thanks to the digital 0.18um CMOS architecture. Size your 1.8V regulator primarily for dynamic (switching) current, which depends on your design's toggle rate, and obtain the exact ICC figures for your usage model from the current tables in datasheet DS094. Decouple VCCINT with local ceramics at each power pin per the datasheet decoupling guidance.
The PQ208 is a fine-pitch (0.5 mm class) gull-wing QFP: specify an approved footprint from datasheet DS094 package drawings, and verify solder-paste stencil apertures with your assembler to avoid bridging on 208 gull-wing leads. Place 100 nF ceramics within a few millimeters of each VCC/GND pin pair. Reserve a 2x5 JTAG header with TDI, TDO, TMS, TCK routed to the CPLD for in-system programming and IEEE 1149.1 boundary-scan manufacturing test - retrofitting a JTAG header after layout is painful.
Two frequent mistakes with this part number: (1) ordering the wrong temperature suffix - the C grade is 0C to +70C only; if your enclosure can exceed 70C, order the pin-identical XC2C256-7PQ208I industrial grade instead, which needs no PCB change. (2) confusing PQ208 with PQG208 - the G suffix denotes the lead-free/RoHS packaging variant; confirm which material standard your compliance program requires before releasing the BOM. Also keep unused I/Os driven or terminated per the datasheet I/O guidance to avoid floating inputs.
合規資訊
Compliance status depends on the packaging suffix: the PQG208 variant denotes lead-free/RoHS packaging while the PQ208 variant must be confirmed on the AMD/Xilinx product page. Verify declarations for the exact ordering code before BOM release.
