XCF04S-VO20C - 4Mb FPGA Configuration PROM, 20-TSSOP | AMD/Xilinx
N.º de pieza: XCF04S-VO20C ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.25 | $7,25 |
| 10 | $6.5 | $65,00 |
| 100 | $5.78 | $578,00 |
| 500 | $5.1 | $2.550,00 |
| 1.000 | $4.65 | $4.650,00 |
XCF04S-VO20C Descripción general
An FPGA configuration PROM is a non-volatile flash memory device that holds the FPGA's bitstream and loads it into the FPGA's internal configuration logic at power-up. In the broader component taxonomy, the XCF04S-VO20C sits in the hierarchy: configuration memory -> PROM -> non-volatile memory -> memory IC -> semiconductor. The Platform Flash family is purpose-built for AMD/Xilinx Spartan, Virtex, and CoolRunner device chains, replacing older one-time-programmable PROMs to lower board cost and shorten programming cycles via in-system programmability through JTAG or slave-serial modes.
Key features include 4 Mb of flash storage, an industrial-standard 4-pin SPI/I2C-like configuration interface, in-system programmability (ISP) via JTAG, and support for daisy-chain configuration across multiple FPGA devices or PROMs. The 20-TSSOP footprint is the same as the larger XCF08P/XCF16P family members, offering a consistent PCB layout when migrating bitstream size. Commercial temperature-grade operation and a single 3.3 V supply simplify power design versus dual-supply PROMs.
From a technical standpoint, the XCF04S-VO20C is built on a NOR-flash process with an internal oscillator, command state machine, and configuration-data serializer. When the FPGA releases its DONE pin (or equivalent configuration logic), the PROM shifts out the bitstream through the dedicated data/clock pins. The flash-based design supports thousands of reprogram cycles, eliminating the need for UV-erase windows of older EPROM PROMs and reducing manufacturing rework time. The 20-TSSOP package keeps the device footprint identical to peers in the Platform Flash family.
Typical applications include Spartan-3 / Spartan-6 FPGA boot-memory links, Virtex-II/Virtex-4/Virtex-5 configuration-storage companions, industrial PLCs and embedded controller boards, and legacy industrial-camera or motor-control platforms that still ship with a separate configuration PROM. It is also commonly seen in test-and-measurement prototypes where designers prefer a dedicated PROM over in-FPGA bitstream compression methods.
When designing with the XCF04S-VO20C, ensure the FPGA's mode pins are set to Master Serial mode (M[2:0] = 000) so the PROM drives CCLK, and confirm the JTAG chain order in software (iMPACT, Vivado hardware manager) to avoid in-system programming conflicts. As of 2026-10-11, this part shows active distributor stock but is flagged in the AMD/Xilinx product change-notification system as approaching end of life - check PCN status before new designs. This page consolidates distributor pricing, drop-in alternatives such as XCF04SVOG20C and XCF08P family members, and PCB-layout notes not included in the manufacturer datasheet.
Alternativas directas para XCF04S-VO20C — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con XCF04S-VO20C (mismo factor de forma y huella) — difiere en Memory Type, Supply Voltage, Bits per Word, Density, Logic Family.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
XCF04SVOG20C
✅ Sustitución directa✓ En stock
$36.9 / unidad
Ver hoja de datos →XCF04SVOGG20C
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
XCF08PVOG20C
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
XCF16PVOG20C
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
XCF02SVOG20C
✅ Sustitución directa✓ En stock
$19.4 / unidad
Ver hoja de datos →XCF04S-VO20C Valores máximos y características eléctricas
| Tipo de memoria | Configuration PROM (Flash, NOR) |
| Tamaño de memoria | 4 Mbit |
| Programmable Type | In System Programmable |
| Tensión de alimentación | 3.0 V to 3.6 V |
| Interfaz | Serial (SPI-compatible / JTAG) |
| Encapsulado | 20-TSSOP (0.173 in / 4.40 mm body width) |
| Tipo de montaje | Surface Mount |
| Configuration Modes Supported | Master Serial, Slave Serial, JTAG |
| Recuento de pines | 20 |
| Packaging | Tube |
Configuración de pines de XCF04S-VO20C
| Pin 1 | VCC — Supply voltage (3.0-3.6 V) |
| Pin 2 | GND — Ground |
| Pin 3 | DIN — Serial data in (daisy chain) |
| Pin 4 | CCLK — Configuration clock |
| Pin 5 | TDI — JTAG test data in |
| Pin 6 | TMS — JTAG test mode select |
| Pin 7 | TCK — JTAG test clock |
| Pin 8 | TDO — JTAG test data out |
| Pin 9 | CEO# — Chip enable output (active low, for daisy chain) |
| Pin 10 | OE/RESET# — Output enable / reset (active low) |
| Pin 11 | CF — Configuration mode select |
| Pin 12 | GND — Ground |
| Pin 13 | DOUT — Serial data out to FPGA |
| Pin 14 | DONE — Configuration complete (active high) |
| Pin 15 | INIT# — Initialization / error (active low) |
| Pin 16 | VCC — Supply voltage (3.0-3.6 V) |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
Aplicaciones típicas
XCF04S-VO20C es adecuado para 6 aplicacións: Spartan-6 FPGA Boot Memory, Spartan-3 Legacy Board Support, Industrial PLC and Embedded Controller, Test and Measurement Instrument Front-End, Legacy Virtex-II / Virtex-4 Configuration Storage, Communications Equipment with FPGA Acceleration.
Spartan-6 FPGA Boot Memory
The XCF04S-VO20C is purpose-built to feed Spartan-6 (XC6SLX) FPGA configuration bitstreams at power-up. The 4 Mbit density covers Spartan-6 LX4, LX9, LX16, LX25 and selected LX45 designs without compression, while the 3.0-3.6 V supply matches VCCO_2 of the Spartan-6 bank that drives configuration pins. Placed near the FPGA's mode pins (M[2:0]=000 for Master Serial), the PROM drives DIN, CCLK and signals DONE when the last bit is clocked out. This same setup is documented in Xilinx UG380 for Spartan-6 and reused by industrial PLC, motor-control and embedded-vision board designs where deterministic boot timing matters.
Recomendado
Spartan-3 Legacy Board Support
Long-lived Spartan-3 / Spartan-3E designs continue to specify the XCF04S-VO20C as their boot memory because it is the AMD/Xilinx-recommended Platform Flash for that generation. With 3.3 V single-supply operation, it can be sourced from the same regulator chain as the FPGA core and I/O. CCLK runs at up to 25 MHz so the 4 Mbit image loads in roughly 170 ms - fast enough for industrial power-on sequencing but slow enough that the FPGA's internal boot-Watchdog resets normally do not trigger. This combination appears in machine-vision cameras, low-volume medical instrumentation and legacy aerospace control boards.
Recomendado
Industrial PLC and Embedded Controller
Industrial PLCs and embedded controllers often require deterministic, reproducible FPGA boot images, which is exactly what the XCF04S-VO20C provides as a dedicated non-volatile configuration source. Industrial-grade systems pair it with a Spartan-6 or Spartan-3 FPGA running determinism-critical logic, and the PROM's 3.0-3.6 V supply is compatible with the common 3.3 V industrial backplane rail. JTAG in-system programmability means a field technician can re-image the FPGA without removing the board, and the flash-based cell supports thousands of reprogram cycles versus older one-time-programmable PROMs - a clear advantage for any industrial platform that needs periodic firmware refreshes.
Recomendado
Test and Measurement Instrument Front-End
Test-and-measurement front-ends with FPGA-based DSP often rely on a dedicated configuration PROM rather than flash-on-microcontroller solutions, because a dedicated PROM isolates boot timing from the MCU's firmware path. The XCF04S-VO20C stores 4 Mbit of FPGA image, drops into a small TSSOP footprint, and is supported by AMD adaptive support as a legacy longevity part. By using Master Serial mode with CCLK from the FPGA, designers can also daisy-chain a second PROM or another FPGA on the same serial bus if the bitstream later grows beyond 4 Mbit, extending the platform without a PCB rework.
Recomendado
Legacy Virtex-II / Virtex-4 Configuration Storage
Designers maintaining Virtex-II, Virtex-II Pro, Virtex-4 and select Virtex-5 FPGAs in long-life aerospace, defence or industrial platforms still specify the XCF04S-VO20C as their boot memory because the AMD/Xilinx ecosystem has standardized on Platform Flash. Even though newer Artix-7/Kintex-7 boards use SPI-mode boot instead, the older-generation platforms benefit from the straightforward Master Serial handshake the XCF04S-VO20C implements. The PROM operates over the full 3.0-3.6 V supply envelope that aligns with Virtex supply rails, and the 20-TSSOP footprint matches existing long-life board layouts retrofitted into legacy chassis.
Recomendado
Communications Equipment with FPGA Acceleration
Communications infrastructure equipment often relies on mid-range FPGAs to perform packet processing, signal conditioning, or encryption offload. The XCF04S-VO20C supplies 4 Mbit of boot memory for Spartan-6 and Virtex-4-class FPGAs that handle the data-plane logic, where deterministic boot-time is crucial for keeping link-layer synchronization intact at chassis power-on. Its 20-TSSOP footprint fits inside module cards where space is constrained, and the single 3.3 V supply simplifies point-of-load regulation. Engineers designing new communications equipment typically migrate to SPI-mode boot with an MX25L or W25Q flash, but for retrofitting existing FPGAs the XCF04S-VO20C continues to be the configuration source.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para XCF04S-VO20C — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | XCF04SVOG20C | XCF04SVOGG20C | XCF08PVOG20C | XCF16PVOG20C | XCF02SVOG20C |
|---|---|---|---|---|---|---|
| Brand | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) | AMD (Xilinx) |
| Package | 20-TSSOP | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same |
| Memory Density | 4 Mbit | 4 Mbit (identical) | 4 Mbit (identical) | 8 Mbit (+100%) | 16 Mbit (+300%) | 2 Mbit (-50%) |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Interface | Serial + JTAG ISP | Serial + JTAG ISP | Serial + JTAG ISP | Serial + JTAG ISP | Serial + JTAG ISP | Serial + JTAG ISP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Configurations Supported | Spartan-3/6, Virtex-2/4/5 | Same FPGA families | Same FPGA families | Spartan-6 + Virtex-5 + Spartan-3 | Virtex-5/6, Spartan-6 LX100+ | Spartan-3E and smaller |
| Lifecycle Status (as of 2026-10-11) | NRND | EOL (per AMD support) | Active | Active | Active | Active |
Diferenciadores clave
- Identical 4 Mbit density in the same 20-TSSOP footprint as the active XCF04SVOGG20C ordering code (frente a XCF04SVOGG20C)
- Field-reprogrammable in-system, unlike one-time-programmable legacy PROMs (frente a Discrete X17xx parallel PROMs)
- Same 20-TSSOP footprint extends up to XCF16P (16 Mbit) without PCB rework (frente a Smaller-density XCF02SVOG20C (2 Mbit))
Notas de diseño
Place the XCF04S-VO20C within 50 mm of the FPGA's configuration pins (DIN, CCLK, INIT#, DONE) to minimize trace capacitance and reflection on the serial data line. Route CCLK as a 50-ohm controlled-impedance microstrip on an unbroken reference plane. Tie JTAG pins to a known state (TDI/TMS/TCK pulled-up to VCC through 10 kohm, TDO left open or pulled-up) when JTAG is unused to avoid spurious configuration triggers during board power-up.
Estimated: at 3.3 V and 10 mA active read current (Platform Flash family), the XCF04S-VO20C draws about 33 mW - well within a 100 mA 3.3 V LDO such as the TPS7A2450DBVR. Decouple VCC to ground with 100 nF + 10 uF X5R placed directly at pins 1 and 16 (the two VCC pads); reference Platform Flash datasheet for exact decoupling requirements. The CF (mode) pin must be tied to VCC or GND, never left floating, or the device may enter an undefined configuration state at power-on.
Do not confuse the XCF04S-VO20C with the XCF04S-VOG20C (RoHS tape and reel packaging) or the XCF04S-VOGG20C - the ordering-code suffixes change the package designation, lead finish, and in some cases the silicon revision. Always confirm the full ordering code on the data sheet against your BOM. A common mistake in new designs is using the wrong density: an XC6SLX45 Spartan-6 bitstream can exceed 4 Mbit, so verify FPGA bitstream size via 'Impact - Get Device Information' or Vivado 'report_utilization' before locking the PROM part number.
Información de cumplimiento
Platform Flash PROMs are general-purpose commercial components, not AEC-Q100 automotive qualified. RoHS, REACH, lead-free and halogen-free statuses are not in the verified web data and are marked 'unknown' - request the latest manufacturer compliance letter from AMD adaptive support before shipping into EU, California or automotive programs.
