XC2C256-7TQ144I - CoolRunner-II CPLD 256MC TQFP-144 | AMD Xilinx
料号： XC2C256-7TQ144I ✓ 量产中XC2C256-7TQ144I 概述
A CPLD is a type of programmable logic device that sits between discrete SPLD devices (such as PAL/GAL/PALCE) and large FPGAs in the programmable-logic hierarchy. CPLDs provide deterministic, pin-to-pin timing, instant-on operation, and non-volatile configuration storage, which makes them the preferred glue-logic, bus-interface, and power-sequencing fabric in systems where an FPGA would be oversized or too slow to boot.
The defining feature of the CoolRunner-II family is its ultra-low power architecture: unlike macrocell CPLDs built on high-power analog fast-switching technology, CoolRunner-II is fabricated on a 1.8 V core CMOS process that consumes orders of magnitude less static current. The -7 speed grade in this suffix denotes the 6.7 ns timing bin, and the trailing 'I' designates the industrial temperature range.
The device integrates 256 macrocells organized into function blocks of 16 macrocells each, with a programmable interconnect matrix that ties all 118 I/Os to the internal fabric. Each macrocell supports combinational and registered modes, global three-state controls, and multiple clocking options. Design entry and compilation are performed with the AMD/Xilinx ISE toolchain.
Typical applications include address decoding and bus interfacing in microprocessor systems, FPGA configuration management and power-sequencing control, protocol bridging and glue logic in industrial automation, handheld and portable equipment where CPLD power budget is critical, and legacy ASIC/ASSP replacement in medical and communication boards.
When designing with this device, remember that the 1.8 V core is internally regulated while I/O banks operate at 1.5 V to 3.3 V; verify that VCCIO banking matches the interfacing voltage standard (LVCMOS levels) before finalizing PCB stack-up.
This page consolidates distributor stock references, drop-in same-package alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet DS094.
直接替换替代料： XC2C256-7TQ144I ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： XC2C256-7TQ144I （相同外形与封装尺寸） ——差异在于 Package, Configuration Memory, Macrocells, Device Type, Speed Grade.
XC2C256-7TQG144I
✅ 直接替换📋 参考替代料（不在目录中）
XC2C256-7TQG144C
✅ 直接替换联系询价
查看数据手册 →XC2C256-7TQ144C
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →XC2C256-6TQ144C
✅ 直接替换联系询价
查看数据手册 →XC2C256-5TQ144C
✅ 直接替换📋 参考替代料（不在目录中）
XC2C256-7TQG144I4011
✅ 直接替换📋 参考替代料（不在目录中）
XC2C256-7TQ144I 最大额定值与电气特性
| Manufacturer | AMD (Xilinx) |
| Product Family | CoolRunner-II CPLD |
| Macrocells | 256 |
| User I/O | 118 inputs / 118 outputs |
| 最大时钟频率 | 108 MHz |
| Propagation Delay (Speed Grade -7) | 6.7 ns |
| Core Voltage | 1.8 V |
| I/O Voltage Range | 1.5 V to 3.3 V |
| 封装 | 144-TQFP (TQ144) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +125C (Industrial) |
| Configuration | Non-volatile, instant-on |
| Function Blocks | 16 macrocells per function block |
| Design Software | AMD/Xilinx ISE |
| Datasheet Document | DS094, Revision 3.2 (2007-03-07) |
XC2C256-7TQ144I 144-tqfp (tq144) 引脚配置指南
XC2C256-7TQ144I（144-tqfp (tq144) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： XC2C256-7TQ144I.
请参阅 数据手册 以查看完整引脚配置。
典型应用
XC2C256-7TQ144I 适用于 6 应用s: Address Decoding and Bus Interfacing, FPGA Configuration and Power Sequencing Control, Industrial Automation Glue Logic, Portable and Battery-Powered Instruments, Communication and Networking Line-Card Logic, Legacy ASIC and Obsolete-Logic Replacement.
Address Decoding and Bus Interfacing
The XC2C256-7TQ144I excels as system glue logic for microprocessor address decoding, chip-select generation, and bus-width translation. Its 256 macrocells provide enough density for full 32-bit address decode with wait-state generation, while the deterministic 6.7 ns pin-to-pin delay of the -7 speed grade guarantees fixed decode timing that never varies with design fit - a key advantage over FPGA routing-dependent delays. With 118 user I/Os in the TQ144 package, wide data buses (16/32-bit) plus address and control lines fit without I/O multiplexing. The non-volatile instant-on configuration means decode logic is active within microseconds of power-up, before a host FPGA or processor firmware loads, which is essential for correct early bus transactions in embedded controllers and single-board computers.
推荐
FPGA Configuration and Power Sequencing Control
CoolRunner-II CPLDs are the industry-standard companion device for managing FPGA boot and power sequencing. The XC2C256-7TQ144I can implement a state machine that sequences multiple power rails, monitors PGOOD signals, holds the target FPGA in reset until all rails stabilize, and then drives the FPGA configuration clock and DONE monitoring. Its instant-on non-volatile fabric means the sequencer runs from the first millisecond, and its 1.8 V core keeps supervisory power draw negligible compared with the FPGA itself. The 6.7 ns -7 timing is far faster than needed for sequencing, giving generous timing margin; the industrial -40C to +125C rating matches the FPGA's industrial grade in the same system. Typical companion parts include JTAG PROMs and supervisory reset ICs in the same power tree.
推荐
Industrial Automation Glue Logic
In factory automation controllers, PLC I/O cards, and motor-drive interface boards, the XC2C256-7TQ144I consolidates encoder-interface counters, quadrature decoding, PWM merging, and safety interlock logic into one device. The industrial -40C to +125C rating covers cabinet environments that exceed commercial limits, and the deterministic CPLD timing ensures interlock propagation delay is fixed and auditable - important for functional-safety documentation. The 256-macrocell capacity handles multi-channel counters with preload, while 118 I/Os interface limit switches, sensors, and relays through external buffering. The 1.8 V core reduces cabinet self-heating, and non-volatile configuration means the I/O logic recovers instantly after power dips without reconfiguration hardware.
推荐
Portable and Battery-Powered Instruments
The defining trait of CoolRunner-II is ultra-low power from its 1.8 V CMOS core, making the XC2C256-7TQ144I the go-to CPLD for handheld test instruments, portable medical monitors, and battery data loggers. Unlike legacy CPLD families whose static current alone can drain a battery pack, CoolRunner-II consumes negligible standby power, and its data-gating feature reduces dynamic power by disabling unused inputs during inactive cycles. The 108 MHz counter ceiling supports fast capture logic in measurement front ends, while 256 macrocells implement the whole logic shell - triggers, prescalers, and interface glue - leaving the host MCU free for computation. The TQ144 industrial grade also tolerates outdoor and vehicle-mounted instruments.
推荐
Communication and Networking Line-Card Logic
In networking equipment, the XC2C256-7TQ144I implements PHY reset sequencing, LED scanning, backplane hot-swap control, and legacy serial-protocol bridging on line cards and switch management boards. The 108 MHz capability comfortably covers 100 Mbps-rate protocol adaptation, and the 6.7 ns deterministic delay suits clock-enabling and enable-signal gating where jitter-free, fixed-latency logic matters. With 118 I/Os, one device handles an entire status/allocation matrix across multiple PHY ports. Designers commonly pair it with Ethernet PHY and magnetics; the industrial rating extends use to outdoor telecom cabinets. Non-volatile instant-on behavior guarantees management logic is alive before switch firmware boots.
推荐
Legacy ASIC and Obsolete-Logic Replacement
The XC2C256-7TQ144I is a proven consolidation target when replacing discontinued PAL/GAL arrays, 22V10 SPLDs, or retired gate-array glue functions. Several ATF16V8/ATF22V10 devices, or dozens of 74-series TTL packages, can be absorbed into the 256 macrocells at lower total power and board area, with the same TQ144 footprint reused across future revisions simply by recompiling the HDL. The ISE toolchain accepts schematic or VHDL/Verilog entry, easing migration of legacy netlists. Instant-on non-volatile configuration matches the behavior of the fuse-based devices being replaced, so system boot sequencing is unchanged - critical when replacing logic that participates in early power-on handshakes.
推荐
推荐产品汇总
工程参考数据： XC2C256-7TQ144I ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | XC2C256-7TQG144I | XC2C256-7TQG144C | XC2C256-6TQ144C | XC2C256-5TQ144C |
|---|---|---|---|---|---|
| Package | 144-TQFP (TQ144) | 144-TQFP (TQ144) - same | 144-TQFP (TQ144) - same | 144-TQFP (TQ144) - same | 144-TQFP (TQ144) - same |
| Brand | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| Propagation Delay | 6.7 ns (-7 grade) | 6.7 ns | 6.7 ns | 5.7 ns (-6 grade) | ~5 ns (-5 grade) |
| Operating Temperature | -40C to +125C (Industrial) | -40C to +125C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) |
| Lead-Free / Green Package | No (standard 'TQ144' plating) | Yes ('G' suffix) | Yes ('G' suffix) | No | No |
| User I/O | 118 | 118 | 118 | 118 | 118 |
| Core Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
关键差异点
- Industrial temperature rating （对比 XC2C256-6TQ144C)
- Cost-optimized speed grade （对比 XC2C256-5TQ144C)
- RoHS standard-plating option availability （对比 XC2C256-7TQG144I)
设计说明
The CoolRunner-II core operates at 1.8 V (internally regulated in family members with an internal regulator; confirm which scheme your ISE configuration uses per DS094), while I/O banks run at 1.5 V to 3.3 V. Decouple each VCC and VCCIO pin with at least 0.1 uF ceramic capacitors placed within 2 mm of the pin, plus one bulk 10 uF per supply domain. Because static current is extremely low, supply sizing is dominated by dynamic switching - estimate dynamic current from your design's toggle rates in the ISE power report rather than from datasheet ICC tables.
The 144-TQFP has 0.5 mm lead pitch; use a standard 144-TQFP land pattern and solder-mask-defined or non-solder-mask-defined pads per IPC guidance and the AMD TQ144 mechanical drawing. Place a 0.1 uF decoupling capacitor at each corner cluster of power pins and route JTAG (TDI, TDO, TMS, TCK) as a short daisy chain with series 22-33 ohm resistors on TMS/TCK if the chain is long. Reserve test-point access to JTAG for in-system programming and boundary-scan production test.
Three frequent mistakes with this part: (1) sourcing the commercial 'C' temperature grade for an industrial environment - verify the 'I' suffix on incoming labels; (2) mixing lead-free (TQG) and standard (TQ) plating in the same reflow process without validating the solder profile for both; (3) assuming FPGA-like timing variance - CPLD timing is deterministic at 6.7 ns worst case for the -7 grade, so do not add FPGA-style routing margins that waste timing budget. Always confirm final AC timings from the ISE timing report against DS094 limits.
合规信息
This TQ144I suffix is the standard-plating package. The 'G' suffix variants (e.g., XC2C256-7TQG144I) are AMD's green/lead-free packaging. Verify RoHS status per suffix on the AMD product page before release.
