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AMD XCR3256XL-7TQ144C
- Part No.:
- XCR3256XL-7TQ144C
- Manufacturer:
- AMD
- Package:
- 144-LQFP
- Datasheet:
-
XCR3256XL-7TQ144C.pdf
- Description:
- IC CPLD 256MC 7NS 144TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,369
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Product details
Overview
XCR3256XL-7TQ144C from AMD (acquired by Xilinx) is a 3.3 V in-system programmable CPLD with 256 macrocells, 144-pin TQFP package, 7.5 ns pin-to-pin propagation delay, and IEEE 1149.1 JTAG boundary-scan support - used in legacy industrial control logic replacement and FPGA configuration glue logic.
For engineers reviewing the XCR3256XL-7TQ144C datasheet, pinout, applications, or equivalent options, key selection factors include macrocell count, I/O pin availability, propagation delay budget, and JTAG-compliant in-system programming capability for field-upgradable logic functions.
Technical Context
This device belongs to the XCR3000XL family of high-performance, low-voltage CPLDs built on Xilinx's 0.35 µm CMOS process. It integrates three function blocks interconnected via a global routing pool, each supporting up to 32 macrocells with product-term-based logic and registered outputs.
The architecture supports asynchronous reset, synchronous preset, clock enable, and global/local clocking options. All I/O pins are 3.3 V tolerant with configurable slew rate and bus-hold circuitry, and the device operates over commercial temperature range (0°C to 70°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Macrocell Count | 256 macrocells - provides sufficient combinatorial and registered logic density for medium-complexity glue logic and state-machine implementation. |
| Propagation Delay | 7.5 ns - enables reliable operation in systems with clock frequencies up to ~100 MHz for critical path timing. |
| Supply Voltage | 3.3 V ± 0.3 V - compatible with standard LVTTL/LVCMOS 3.3 V I/O interfaces without level-shifting. |
| I/O Pins | 118 user I/Os - supports wide parallel bus interfacing, address decoding, and multi-function peripheral control. |
| Operating Temperature | 0°C to +70°C - suitable for commercial-grade embedded control and communications equipment. |
| JTAG Support | IEEE 1149.1 compliant - enables boundary-scan testing, in-system programming, and debug visibility without external programmers. |
Pinout & Package
Package: 144-lead Thin Quad Flat Pack (TQFP), 20 mm × 20 mm, 0.5 mm pitch, lead-free (Pb-free) and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (multiple) | Ground reference | Provides low-impedance return path for all internal logic and I/O drivers; requires proper PCB decoupling. |
| VCCIO (multiple) | I/O power supply | Supplies 3.3 V to all I/O banks; must be independently decoupled from core VCC. |
| VCCINT | Core logic supply | Supplies 3.3 V to internal PLD logic array; shares voltage rail with VCCIO but has distinct current requirements. |
| TCK, TMS, TDI, TDO | JTAG interface signals | Enable IEEE 1149.1 boundary-scan test and in-system programming without dedicated programming hardware. |
| CLK0–CLK3 | Global clock inputs | Four dedicated low-skew clock inputs feed global routing network for synchronous logic timing control. |
| I/O[0]–I/O[117] | Configurable bidirectional I/O | Supports input, output, or bidirectional operation with programmable pull-up, slew rate, and bus-hold. |
Key Features
| Feature | Design Value |
|---|---|
| In-system programmability | Enables field firmware updates and logic revisions via JTAG without socket removal or UV erasure. |
| 118-user I/O with bus-hold | Prevents floating inputs during power-up/down or tri-state conditions, eliminating need for external pull-ups. |
| Low-power 0.35 µm CMOS process | Reduces static current consumption to < 100 µA at standby, supporting energy-sensitive industrial modules. |
| Programmable slew rate control | Allows optimization of signal integrity and EMI by selecting fast or slow edge rates per I/O group. |
| Three independent function blocks | Supports modular logic partitioning and localized timing closure across complex control paths. |
Applications
| Industrial PLC I/O Expansion | Legacy Bus Interface Translation |
|---|---|
Use Scenario: Adding discrete digital I/O points to programmable logic controllers using parallel backplane buses. IC Role / Device Role / Timing Role: Glue logic CPLD implementing address decoding, strobe generation, and status multiplexing between CPU and peripheral modules. Use Value: Replaces multiple SSI/MSI TTL chips with single-programmable device, reducing board area and improving reliability. | Use Scenario: Bridging ISA or VMEbus peripherals to modern microcontroller-based control units. IC Role / Device Role / Timing Role: Protocol-aware logic translator handling bus timing skew, handshaking signal synchronization, and voltage-level adaptation. Use Value: Maintains deterministic 7.5 ns propagation delay across all translated control signals, preserving system timing margins. |
| FPGA Configuration Manager | Test Equipment Control Logic |
Use Scenario: Storing and sequencing configuration bitstreams for Spartan or Virtex FPGAs during power-on initialization. IC Role / Device Role / Timing Role: Nonvolatile state machine managing SPI/I2C boot loading, CRC validation, and fallback reconfiguration. Use Value: Leverages in-system programmability to update FPGA config sequences without hardware changes or rework. | Use Scenario: Coordinating stimulus generation, measurement gating, and DUT interface sequencing in automated test systems. IC Role / Device Role / Timing Role: Deterministic real-time sequencer generating precise trigger pulses and sample windows with sub-10 ns jitter. Use Value: Achieves repeatable 7.5 ns timing resolution across all 118 I/Os, enabling synchronized multi-channel test execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CPLD-based logic replacement applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XCR3256XL-10TQ144C | 10 ns propagation delay vs. 7.5 ns; otherwise identical architecture, pinout, and voltage specs. | Suitable where timing margin is relaxed; lower speed grade may reduce power slightly. | Select when system clock domain allows ≥10 ns critical path delay and cost sensitivity favors slower speed bin. |
| XC95288XL-10TQ144C | 288 macrocells, same 3.3 V supply and TQFP-144 package, but higher propagation delay (10 ns) and different internal routing architecture. | Better suited for larger logic density needs; not pin-compatible due to differing I/O assignment and function block layout. | Choose when additional macrocells are required and design can accommodate architectural differences and retargeting effort. |
Compared with XCR3256XL-7TQ144C, the -10 speed grade offers cost savings at the expense of timing margin, while XC95288XL-10TQ144C trades pin compatibility for higher logic capacity - both require functional verification and may impact PCB layout or timing closure.
Availability
XCR3256XL-7TQ144C is available at Aetrix Electronics and suitable for industrial control, legacy system repair, and FPGA configuration management requiring stable component supply and long-lifecycle support.
Supply support for XCR3256XL-7TQ144C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
AMD acquired Xilinx in 2022, inheriting its legacy programmable logic portfolio including the CoolRunner-II CPLD family.
The XCR3256XL series was designed for low-power, in-system programmable logic replacement in space-constrained industrial and communications equipment where nonvolatile configuration and JTAG accessibility are essential.
FAQ
What is the maximum operating frequency supported by XCR3256XL-7TQ144C?
The XCR3256XL-7TQ144C has a 7.5 ns pin-to-pin propagation delay, supporting maximum system clock frequencies up to approximately 100 MHz for critical path logic. Actual achievable frequency depends on design complexity, routing, and I/O loading. The device does not specify a fixed maximum clock frequency but guarantees timing performance under defined voltage and temperature conditions.
Is XCR3256XL-7TQ144C pin-compatible with other devices in the XCR3000XL family?
Yes, XCR3256XL-7TQ144C is pin-compatible with other XCR3256XL speed grades (e.g., -10TQ144C) in the same TQFP-144 package. However, it is not pin-compatible with XCR3064XL or XCR3128XL variants due to differing I/O counts and internal pin assignments, even when packaged identically.
Does XCR3256XL-7TQ144C support in-system programming via JTAG only?
Yes, XCR3256XL-7TQ144C supports in-system programming exclusively through its IEEE 1149.1 JTAG interface. No parallel programming mode or external configuration PROM interface is provided. Programming requires a JTAG-compliant tool such as Xilinx iMPACT or third-party boundary-scan controllers.
What is the I/O voltage tolerance of XCR3256XL-7TQ144C?
XCR3256XL-7TQ144C operates at 3.3 V nominal supply and supports 3.3 V LVTTL/LVCMOS I/O standards. Its I/O pins are not 5 V tolerant - applying 5 V signals may damage the device. External level shifters are required for interfacing with 5 V logic families.
Can XCR3256XL-7TQ144C replace older 5 V CPLDs like the XC9500 series?
XCR3256XL-7TQ144C can functionally replace XC9500-series CPLDs in many logic applications, but only after verifying voltage compatibility, timing constraints, and I/O drive strength. Unlike the 5 V XC9500, XCR3256XL-7TQ144C requires 3.3 V operation and lacks 5 V tolerance, so direct drop-in replacement is not possible without board-level modifications.
XCR3256XL-7TQ144C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- CoolRunner XPLA3
- Package/Case:
- 144-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Programmable Type:
- In System Programmable (min 1K program/erase cycles)
- Delay Time tpd(1) Max:
- 7 ns
- Voltage Supply - Internal:
- 3V ~ 3.6V
- Number of Logic Elements/Blocks:
- 16
- Number of Macrocells:
- 256
- Number of Gates:
- 6000
- Number of I/O:
- 120
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-TQFP (20x20)
XCR3256XL-7TQ144C FAQ
1.How can I place an order for XCR3256XL-7TQ144C through Aetrix?
Please submit a Request for Quotation (RFQ) for XCR3256XL-7TQ144C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for XCR3256XL-7TQ144C reliable?
The price and inventory of XCR3256XL-7TQ144C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XCR3256XL-7TQ144C is usually 5 days.
3.What payment methods are accepted for XCR3256XL-7TQ144C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XCR3256XL-7TQ144C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XCR3256XL-7TQ144C?
XCR3256XL-7TQ144C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XCR3256XL-7TQ144C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for XCR3256XL-7TQ144C?
For technical support, including XCR3256XL-7TQ144C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XCR3256XL-7TQ144C requirements.
6.How does Aetrix verify that XCR3256XL-7TQ144C is sourced from the original manufacturer or authorized distributors?
All XCR3256XL-7TQ144C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that XCR3256XL-7TQ144C meets industry standards.
7.What is the process for return or replacement of XCR3256XL-7TQ144C?
All XCR3256XL-7TQ144C units undergo pre-shipment inspection (PSI). If there is an issue with XCR3256XL-7TQ144C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The XCR3256XL-7TQ144C part is unused and in its original packaging.
Return procedure for XCR3256XL-7TQ144C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XCR3256XL-7TQ144C Tags
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5M40ZE64C5N
Intel
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ATF1502ASV-15AU44
Microchip Technology
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5M80ZE64C5N
Intel
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5M80ZT100C5N
Intel
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ATF1502AS-10AU44
Microchip Technology
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ATF1502AS-10JU44
Microchip Technology
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5M80ZE64I5N
Intel
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5M80ZT100I5N
Intel
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LC4032V-75TN48C
Lattice Semiconductor Corporation
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ATF1504ASV-15AU44
Microchip Technology
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ATF1504AS-10JU44
Microchip Technology
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5M160ZE64C5N
Intel
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