XC2C256-7TQ144C - 256-Macrocell CoolRunner-II CPLD | AMD Xilinx
N.º da peça: XC2C256-7TQ144C ✓ AtivoXC2C256-7TQ144C Visão geral
A CPLD (Complex Programmable Logic Device) is a class of programmable logic integrated circuit, sitting between SPLDs such as GAL/PAL devices and FPGAs in the programmable logic hierarchy. CPLDs provide non-volatile configuration, deterministic pin-to-pin timing, and abundant macrocells interconnected through a programmable interconnect matrix, making them ideal for glue logic, state machines, and power-up control where a full FPGA would be oversized.
The XC2C256-7TQ144C belongs to the CoolRunner-II family, fabricated on a 0.18 um CMOS process. Its defining characteristic is extremely low static power: unlike PAL-style CPLDs that use sense-amp interconnect, CoolRunner-II uses a fast, low-power interconnect architecture delivering deterministic 7 ns speed grade performance with very low quiescent current. The device supports I/O standards including LVTTL, LVCMOS (3.3V, 2.5V, 1.8V, 1.5V), SSTL, and HSTL on its 118 user I/O, with Schmitt-trigger inputs, hot-plugging capability, and optional input hysteresis for noise immunity.
Technical depth: each macrocell contains a combinable/sum-of-products function block, and the Advanced Interconnect Matrix routes signals globally with predictable delays. Design entry and programming are performed in AMD/Xilinx ISE design tools; the non-volatile configuration survives power cycling and supports in-system programming (ISP) via the JTAG interface, enabling field updates of the logic design.
Typical applications include bus interface bridging, address decoding, power-sequencing control, industrial control state machines, legacy processor support logic, and mobile/battery-powered systems where the CoolRunner-II low static power advantage directly extends battery life.
Design consideration: because CoolRunner-II is a 1.8V-core device, observe the recommended power-up sequencing and use the dedicated VCCINT/VCCIO rails correctly; also apply Schmitt-trigger configuration on inputs driven from slow or noisy edges.
This page adds value beyond the manufacturer datasheet by synthesizing distributor stock channels, drop-in same-family alternative part numbers, application guidance, and a parameter comparison table in one place.
Alternativas drop-in para XC2C256-7TQ144C — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com XC2C256-7TQ144C (mesmo formato e footprint) — diferindo em Package, Configuration Memory, Macrocells, Device Type, Speed Grade.
XC2C256-7TQG144C
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →XC2C256-7TQG144I
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
XC2C256-7TQ144I
✅ Drop-InConsulte o preço
Ver ficha técnica →XC2C256-6TQ144C
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →XC2C256-10TQ144C
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
XC2C256-7TQ144C Classificações máximas e características elétricas
| Manufacturer | AMD (Xilinx) |
| Family | CoolRunner-II |
| Macrocells | 256 |
| Gates | 6K |
| Process Technology | 0.18 um CMOS |
| Maximum Toggle Frequency | 152 MHz |
| Speed Grade | -7 |
| Encapsulamento | TQFP-144 (20x20 mm) |
| Tipo de montagem | Surface Mount |
| Temperature Grade | Commercial (C) |
| Configuration Memory | Non-volatile |
| Programming Interface | JTAG (In-System Programmable) |
| I/O Standards | LVTTL, LVCMOS, SSTL, HSTL |
Guia de Configuração de Pinos do XC2C256-7TQ144C tqfp-144 (20x20 mm)
Configuração de pinos para XC2C256-7TQ144C (pacote tqfp-144 (20x20 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para XC2C256-7TQ144C.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
XC2C256-7TQ144C é adequado para 6 aplicaçãos: Glue Logic and Address Decoding, Power Sequencing and Reset Control, Industrial Control State Machines, Legacy Processor Support Logic, Battery-Powered and Portable Systems, Communication Interface Bridging.
Glue Logic and Address Decoding
The XC2C256-7TQ144C is a classic choice for board-level glue logic: address decoding, chip-select generation, bus transceiver direction control, and wait-state insertion for microprocessor systems. Its 256 macrocells absorb dozens of discrete 74xx gates, and the deterministic -7 speed grade (7 ns timing bin, 152 MHz toggle capability) lets designers verify decode timing against processor setup and hold windows by simple arithmetic rather than iterative place-and-route runs, as required on an FPGA. LVCMOS I/O banks at 3.3V, 2.5V, 1.8V, and 1.5V bridge mixed-voltage buses on a single device, and Schmitt-trigger input configuration tolerates slow, noisy edges typical of backplane signals. Because configuration is non-volatile and instantly active at power-up, decoded chip-selects are valid from the first cycle - no configuration delay as with SRAM FPGAs.
Recomendado
Power Sequencing and Reset Control
Multi-rail systems - processors, FPGAs, RF modules - often need carefully sequenced enable signals, reset stretching, and power-good monitoring. The XC2C256-7TQ144C implements these state machines deterministically: its instant-on non-volatile configuration means sequencing logic is active from the first nanosecond after power arrives, unlike SRAM FPGAs that need configuration time before operating. The 256 macrocells provide ample registers for multi-stage counters producing programmable reset durations, and input hysteresis rejects noisy power-good comparator edges. CoolRunner-II low static current also means the sequencer adds negligible housekeeping draw, which matters in battery-backed and always-on equipment. For dense sequencing designs, pair it with dedicated supervisor ICs and interface everything through the CPLD's flexible LVCMOS banks for a single point of control.
Recomendado
Industrial Control State Machines
Industrial automation boards - sensor hubs, motor-control interfaces, safety interlocks - rely on compact, reliable, field-updatable logic. The XC2C256-7TQ144C hosts sizeable state machines and counters in its 256 macrocells while the TQFP-144 package exposes up to 118 user I/O for switches, encoders, and actuator drivers. JTAG in-system programming lets technicians update interlock logic on the factory floor without desoldering, an important maintenance advantage over fixed-logic solutions. Deterministic -7 timing simplifies certification-style timing analysis for safety-related handshake paths, and the CPLD's very low static power suits always-on monitoring nodes. For wider-temperature installations, the footprint-identical XC2C256-7TQ144I industrial variant drops onto the same PCB without redesign.
Recomendado
Legacy Processor Support Logic
Maintaining legacy 8-bit and 16-bit bus systems - ISA-style backplanes, Z80-class CPU boards, vintage instrument interfaces - increasingly depends on CPLDs because discrete TTL families are being phased out. The XC2C256-7TQ144C absorbs entire address decoders, interrupt controllers, DMA handshake glue, and bus arbitration logic from dozens of 74-series packages into one 144-pin device. Its LVCMOS 3.3V banks with appropriate interfacing replace 5V TTL logic, Schmitt-trigger inputs clean up aged bus signals, and deterministic 7 ns timing comfortably meets legacy bus cycle budgets. JTAG in-system reprogrammability allows bug fixes to long-obsolete designs, and the abundant stock of the CoolRunner-II family makes it a preferred consolidation vehicle for retrofits of industrial and test equipment still in service.
Recomendado
Battery-Powered and Portable Systems
CoolRunner-II distinguishes itself from PAL-architecture CPLDs through exceptionally low static power, a direct benefit in battery-operated and duty-cycled portable products. The XC2C256-7TQ144C provides the interconnect density of a mid-range CPLD - 256 macrocells, 118 user I/O - while drawing minimal quiescent current, extending sleep-mode battery life compared with higher-power alternatives. Typical uses include keypad scanning matrices, display interface control, power-gating management, and sensor front-end timing in portable instrumentation. The 1.8V-class core and LVCMOS I/O options at 1.5V and 1.8V allow interfacing with modern low-voltage SoCs without level-shifters. Designers should budget I/O termination currents and configure unused I/O properly to preserve the family's low-power advantage in sleep states.
Recomendado
Communication Interface Bridging
Networking and communication boards frequently need protocol adaptation glue - UART/MUX select logic, E1/T1 framing assists, backplane arbitration, and status-line multiplexing - between MACs, PHYs, transceivers, and host processors. The XC2C256-7TQ144C's 152 MHz toggle capability and -7 deterministic timing handle these sub-100 MHz control-plane functions with margin, while its 118 user I/O in the 144-pin TQFP connects many transceivers at once. LVCMOS banks at 2.5V and 1.8V interface directly with modern PHY I/O, and JTAG ISP permits field firmware-logic updates as protocol requirements evolve. Combining the CPLD with dedicated PHY and transceiver devices yields a clean partition: real-time line-side functions in silicon, adaptable control logic in the CoolRunner-II.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para XC2C256-7TQ144C — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | XC2C256-7TQG144C | XC2C256-7TQG144I | XC2C256-7TQ144I | XC2C256-6TQ144C |
|---|---|---|---|---|---|
| Package | TQFP-144 (20x20 mm) | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Brand | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| Speed Grade | -7 | -7 | -7 | -7 | -6 (faster) |
| Temperature Grade | Commercial (C) | Commercial (C) | Industrial (I) | Industrial (I) | Commercial (C) |
| Package Finish | Standard (leaded) | Lead-free (G) | Lead-free (G) | Standard (leaded) | Standard (leaded) |
| Configuration | Non-volatile, JTAG ISP | Non-volatile, JTAG ISP | Non-volatile, JTAG ISP | Non-volatile, JTAG ISP | Non-volatile, JTAG ISP |
Principais diferenciais
- Lowest static power in its CPLD class (vs XC2C256-10TQ144C)
- Instant-on non-volatile configuration (vs SRAM FPGA alternatives)
- Lead-free variant available on the identical footprint (vs XC2C256-7TQG144C)
- Trade-off: fixed 256-macrocell density (vs XC2C384-10TQG144C)
Notas de projeto
CoolRunner-II devices use separate VCCINT (1.8 V core) and VCCIO (per-bank, 1.5 V to 3.3 V) supplies. Decouple each VCCIO bank and the core with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, plus bulk capacitance at the board level. Follow the power-up sequencing recommendations in the DS094 datasheet: core voltage must be established before or with the I/O rails to avoid latch-up paths through the I/O structures during hot insertion.
The TQFP-144 (20x20 mm, 0.5 mm pitch) land pattern should follow the mechanical drawing in DS094. Route the four JTAG signals (TDI, TDO, TMS, TCK) to a 2x5 or 2x7 header and terminate TCK with a weak pull-down at the header so unprogrammed boards remain stable. Keep TQFP corner leads free of test-point pads that cause solder bridging at 0.5 mm pitch, and inspect with X-ray or AOI after reflow.
Do not assume FPGA-style asynchronous timing: CoolRunner-II timing is predictable, but the -7 speed grade guarantees are commercial-grade limits - industrial variants derate at temperature, so re-verify critical paths with the industrial timing tables if you use the -I suffix. Configure unused I/O as grounded outputs or inputs with pull-downs to prevent floating-node noise, and enable Schmitt-trigger input mode on signals driven from slow edges such as switches, comparators, or long cables to prevent double-clocking.
For bus interfaces above roughly 50 MHz, add series termination (22 to 33 ohm) on clock and high-fanout outputs sourced from the CPLD to control ringing on typical FR-4 traces. The Advanced Interconnect Matrix gives deterministic delays, but output drive characteristics still interact with trace length - keep fast outputs on short traces or under 10 cm, or slow them via the drive-strength/slew configuration in the ISE tools when target loads are light.
Informações de conformidade
The XC2C256-7TQ144C is the standard package finish; the XC2C256-7TQG144C variant is the AMD lead-free (G) packaging option. Confirm formal RoHS/REACH declarations with AMD or via the Request a Quote form.
