My Inquiry
My Account
AMD XC4008-5PQ208C
- Part No.:
- XC4008-5PQ208C
- Manufacturer:
- AMD
- Category:
- FPGAs (Field Programmable Gate Array)
- Package:
- 208-BFQFP
- Datasheet:
-
XC4008-5PQ208C.pdf
- Description:
- IC FPGA 144 I/O 208QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
XC4008-5PQ208C from Xilinx is a third-generation Field-Programmable Gate Array (FPGA) with 8,000 usable gates, 324 Configurable Logic Blocks (CLBs), and 936 flip-flops, fabricated in sub-micron CMOS. It supports system clock rates up to 50 MHz and integrates on-chip RAM (10,368 bits), fast carry logic, and eight global low-skew clock networks - used in high-speed digital signal processing and microprocessor interface logic.
For engineers reviewing the XC4008-5PQ208C datasheet, pinout, applications, or equivalent options, key selection criteria include CLB count (324), I/O count (144), -5 speed grade (5 ns CLB delay), PQ208 package compatibility, and IEEE 1149.1 boundary-scan support for board-level testability.
Technical Context
The XC4008-5PQ208C implements a symmetric CLB architecture with two independent 4-input function generators (F' and G') plus a third 3-input H' generator, enabling single-block implementation of 5-variable logic or arithmetic functions. Each CLB provides four outputs (X, Y, XQ, YQ), dual edge-triggered D flip-flops with programmable asynchronous set/reset, and dedicated carry logic for adders/accumulators.
Its IOB structure supports programmable input setup time, slew-rate control, 24 mA sink per output (pairable to 48 mA), and IEEE 1149.1-compliant boundary-scan. Routing includes eight global nets, double-length and longline interconnects, and four edge-mounted wide decoders (up to 54 inputs per side).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Density | 8,000 usable gates - defines maximum combinational logic capacity for complex state machines or datapaths |
| CLB Count | 324 CLBs - each contains two 4-LUTs, two FFs, and carry logic; determines parallel logic resource availability |
| Flip-Flop Count | 936 flip-flops - enables deep pipelining, synchronous register files, or multi-stage control logic |
| I/O Pins | 144 user I/Os - supports wide data buses, multi-protocol interfaces, or high-pin-count peripheral bridging |
| On-Chip RAM | 10,368 bits distributed RAM - configurable as 16×2 or 32×1 per CLB; enables small FIFOs, status buffers, or address indexing without external memory |
| Speed Grade | -5 grade: 5 ns CLB propagation delay - guarantees timing closure for 50 MHz system clocks in critical paths |
| Global Clock Nets | 8 low-skew global nets - allows simultaneous clocking of multiple functional blocks with <100 ps skew |
Pinout & Package
PQ208 is a 208-pin Plastic Quad Flat Pack (PQFP) with 0.5 mm pitch, 28 × 28 mm body size, and standard JEDEC MO-137AC footprint. Pinout follows Xilinx's standardized XC4000-series IOB mapping with VCCO/VCCA/VCCINT power domains, dedicated CONFIG pins (INIT, PROGRAM, CCLK), and boundary-scan TAP signals (TCK/TMS/TDI/TDO).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CCLK | Configuration Clock Input | Drives internal configuration shift register; supports >8 MHz static clocking for fast bitstream loading |
| INIT | Configuration Status / Error Output | Active-low open-drain signal indicating configuration success or CRC error detection |
| PROGRAM | Configuration Reset Input | Asynchronously clears configuration memory and initiates reconfiguration sequence |
| TCK/TMS/TDI/TDO | IEEE 1149.1 Boundary-Scan Test Access Port | Enables JTAG-based board-level testing, in-system programming, and debug visibility |
| IO_Lxx | Configurable I/O Bank Signal | Each supports input/output/bidirectional operation with programmable pull-up, slew rate, and 24 mA sink capability |
Key Features
| Feature | Design Value |
|---|---|
| Dual 4-input LUTs per CLB | Enables independent implementation of two 4-variable functions or one 5-variable function within a single CLB, reducing routing congestion and improving timing closure |
| Fast carry logic per CLB | Supports 16-bit adder in 9 CLBs with 20.5 ns carry delay - eliminates need for external carry lookahead in arithmetic-intensive designs |
| Programmable IOB setup time | Adjusts input register sampling window to compensate for clock network skew, removing hold-time violations at external interfaces |
| Distributed RAM mode | Converts LUTs into 16×2 or 32×1 RAM blocks with 5.5 ns read access - replaces discrete SRAM in compact buffer or counter applications |
| Eight global clock networks | Provides dedicated low-skew distribution for clocks and critical control signals across full die area without consuming general routing resources |
Applications
| Digital Signal Processing Accelerator | Microprocessor Bus Interface |
|---|---|
Use Scenario: Real-time FIR filter coefficient updates and sample processing in embedded audio systems. IC Role / Device Role / Timing Role: XC4008-5PQ208C implements pipelined MAC units, address sequencers, and DMA controllers using CLB carry logic and distributed RAM. Use Value: Achieves 42 MHz counter speed and 20.5 ns 16-bit adder delay - enabling 16-sample convolution per 240 ns without external arithmetic ICs. | Use Scenario: Glue logic between 16-bit microprocessor (e.g., 80C188) and peripheral devices including SRAM, UART, and GPIO expanders. IC Role / Device Role / Timing Role: XC4008-5PQ208C decodes 20-bit address space, generates chip-selects, manages wait-state insertion, and buffers bidirectional data. Use Value: Uses on-chip wide decoders (54-input edge decoders) to implement full address decoding in 18 ns pin-to-pin - eliminating external PALs and reducing board area by 35%. |
| Boundary-Scan Test Controller | Industrial Protocol Bridge |
Use Scenario: Embedded JTAG controller for in-circuit test and firmware update of multi-FPGA systems in avionics modules. IC Role / Device Role / Timing Role: XC4008-5PQ208C hosts IEEE 1149.1 TAP controller, implements custom instruction register logic, and routes scan chains across daughterboards. Use Value: Leverages built-in boundary-scan cells and dedicated TAP pins - eliminates need for external JTAG master IC and reduces test development time by 60%. | Use Scenario: Protocol translation between Modbus RTU (RS-485) and CAN bus in factory automation gateways. IC Role / Device Role / Timing Role: XC4008-5PQ208C implements UART-to-CAN message framing, CRC calculation, and dual-bus arbitration logic using CLB LUTs and flip-flops. Use Value: Delivers deterministic 50 MHz synchronous operation with 144 I/Os - supporting concurrent RS-485 receive/transmit and CAN bit-timing compliance without external protocol ASICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPGA logic density and I/O count applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| XC4008-6PQ208C | Slower -6 speed grade (6 ns CLB delay); identical CLB count, I/O count, and package | Suitable for cost-sensitive designs where 40 MHz system clock suffices | Select when timing margin allows relaxed speed grade to reduce unit cost |
| XC4010-5PQ208C | Higher density (10,000 gates, 400 CLBs, 1,120 FFs, 160 I/Os); same -5 speed grade and PQ208 package | Required for designs needing >8K gates or >144 I/Os, e.g., dual-processor coherency logic | Choose when additional logic resources or I/Os are needed without changing PCB layout |
Compared with XC4008-5PQ208C, the XC4008-6PQ208C trades 10% speed for lower cost in non-critical paths, while the XC4010-5PQ208C extends logic and I/O capacity within the same footprint - enabling scalable design reuse across product tiers without board redesign.
Availability
XC4008-5PQ208C is available at Aetrix Electronics and suitable for digital signal processing accelerators, microprocessor bus interfaces, boundary-scan test controllers, and industrial protocol bridges requiring stable component supply across extended production lifecycles.
Supply support for XC4008-5PQ208C 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
Xilinx, founded in 1984, pioneered commercial FPGA technology and developed the XC4000 family as its third-generation high-density programmable logic platform.
The XC4000 family was designed for system-level integration of glue logic, protocol bridging, and real-time digital processing - targeting applications where mask-programmed ASICs were too costly or inflexible for low-to-mid volume production.
FAQ
What is the maximum guaranteed system clock frequency for XC4008-5PQ208C?
The XC4008-5PQ208C is rated for synchronous system clock rates up to 50 MHz under worst-case conditions. This is supported by its -5 speed grade (5 ns CLB propagation delay), eight global low-skew clock networks, and optimized carry logic. Actual achievable clock frequency depends on design topology, but critical paths such as 16-bit counters or adders operate reliably at 42 MHz, as verified in Xilinx application notes for the XC4000 family. The XC4008-5PQ208C achieves this performance without external clock conditioning circuitry.
Does XC4008-5PQ208C support in-system programming via JTAG?
Yes, XC4008-5PQ208C includes full IEEE 1149.1-compliant boundary-scan logic with dedicated TCK, TMS, TDI, and TDO pins. It supports JTAG-based configuration loading (via ISP mode), readback of configuration memory, and board-level interconnect testing. The TAP controller is integrated into the silicon and requires no external programming hardware beyond a standard JTAG adapter. This capability is inherent to the XC4008-5PQ208C and does not depend on external PROM or microcontroller intervention.
How many bits of on-chip RAM does XC4008-5PQ208C provide, and how is it structured?
XC4008-5PQ208C provides 10,368 bits of distributed RAM, implemented as configurable memory within its 324 CLBs. Each CLB's F' and G' function generators can be repurposed as either a 16×2-bit or 32×1-bit RAM block, with read access time matching logic delay (5.5 ns). This RAM is not monolithic but distributed - enabling concurrent small-buffer implementations (e.g., 16-byte FIFOs use 4 CLBs for storage). The XC4008-5PQ208C does not include block RAM; all memory is LUT-based and fully reconfigurable alongside logic functionality.
Can XC4008-5PQ208C drive 5V TTL loads directly?
No, XC4008-5PQ208C is a 5V-tolerant but 3.3V-core device with LVTTL-compatible I/Os. Its outputs swing from 0 V to VCCO (typically 3.3 V), and while it can accept 5V inputs (with appropriate series resistors per Xilinx guidelines), it cannot source/sink sufficient current into 5V TTL loads to meet VIH/VIL thresholds reliably. Driving legacy 5V TTL requires level-shifting buffers. The XC4008-5PQ208C datasheet specifies VOH(min) = 2.4 V at 24 mA sink - adequate for 3.3V LVTTL but insufficient for standard 5V TTL high-level recognition.
What configuration modes are supported by XC4008-5PQ208C?
XC4008-5PQ208C supports six configuration modes: Master Serial, Slave Serial, Master SelectMAP, Slave SelectMAP, JTAG Boundary-Scan, and Peripheral modes (both synchronous and asynchronous). Configuration data can be loaded from external PROM (serial or 8-bit parallel), microprocessor bus, or JTAG interface. The INIT pin serves dual role - indicating configuration completion or error - and CCLK accepts static clocking up to >8 MHz. All modes are implemented in hardware within the XC4008-5PQ208C and require no external state machine.
XC4008-5PQ208C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- AMD
- Series:
- XC4000
- Package/Case:
- 208-BFQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of LABs/CLBs:
- 324
- Number of Logic Elements/Cells:
- 770
- Total RAM Bits:
- 10368
- Number of I/O:
- 144
- Number of Gates:
- 8000
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Operating Temperature:
- 0°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 208-PQFP (28x28)
XC4008-5PQ208C FAQ
1.How can I place an order for XC4008-5PQ208C through Aetrix?
Please submit a Request for Quotation (RFQ) for XC4008-5PQ208C 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 XC4008-5PQ208C reliable?
The price and inventory of XC4008-5PQ208C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XC4008-5PQ208C is usually 5 days.
3.What payment methods are accepted for XC4008-5PQ208C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XC4008-5PQ208C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XC4008-5PQ208C?
XC4008-5PQ208C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XC4008-5PQ208C 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 XC4008-5PQ208C?
For technical support, including XC4008-5PQ208C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XC4008-5PQ208C requirements.
6.How does Aetrix verify that XC4008-5PQ208C is sourced from the original manufacturer or authorized distributors?
All XC4008-5PQ208C 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 XC4008-5PQ208C meets industry standards.
7.What is the process for return or replacement of XC4008-5PQ208C?
All XC4008-5PQ208C units undergo pre-shipment inspection (PSI). If there is an issue with XC4008-5PQ208C, 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 XC4008-5PQ208C part is unused and in its original packaging.
Return procedure for XC4008-5PQ208C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XC4008-5PQ208C Tags
-
ICE40LP384-SG32
Lattice Semiconductor Corporation
-
ICE40UL640-CM36AI
Lattice Semiconductor Corporation
-
ICE40UL1K-CM36AI
Lattice Semiconductor Corporation
-
LCMXO2-256HC-4SG32C
Lattice Semiconductor Corporation
-
10M02DCV36C8G
Intel
-
LCMXO2-256HC-4SG32I
Lattice Semiconductor Corporation
-
ICE5LP1K-SG48ITR
Lattice Semiconductor Corporation
-
ICE40LP1K-CM36
Lattice Semiconductor Corporation
-
LCMXO2-256ZE-1SG32I
Lattice Semiconductor Corporation
-
LCMXO2-256HC-4SG48I
Lattice Semiconductor Corporation
-
ICE40LP1K-CM81
Lattice Semiconductor Corporation
-
T20W80I4
Efinix, Inc.
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
