EPC2TC32UCAF - 1.6Mb Config PROM for SRAM FPGAs | Altera
Référence : EPC2TC32UCAF ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1 385,00 |
| 500 | $11.5 | $5 750,00 |
| 1 000 | $9.95 | $9 950,00 |
EPC2TC32UCAF Présentation
A Configuration PROM is a non-volatile memory device that holds the FPGA's configuration bitstream and serializes it into the target FPGA's configuration controller on power-up. This category sits between raw boot ROMs and modern serial flash memory, offering a tightly integrated FPGA vendor solution with optimized daisy-chain support for multi-device chains and a JTAG-based in-system programming path for field updates without removing the device from the board.
Key features include in-system programmability via IEEE 1149.1 (JTAG) boundary-scan, support for multi-device FLEX configuration daisy-chaining through dedicated nCASC and DATA pins, low-power CMOS operation, and on-chip data compression compatible with Altera's compression algorithms. The device operates from 3.0 V to 3.6 V and supports both 3.3 V and 2.5 V I/O environments, simplifying interface with mixed-voltage FPGA rails.
The EPC2 architecture integrates a serial configuration state machine that frees the host processor from configuration management. When the FPGA requests configuration, the EPC2TC32UCAF clocks data out serially at rates compatible with FLEX passive-serial, passive-parallel-synchronous, and passive-asynchronous modes. Its 1.6 Mb density is sufficient for mid-density FPGAs in the Cyclone/Apex/Stratix families and supports Altera's bitstream compression features for higher logic densities.
Typical applications include boot storage for Cyclone, Stratix, and APEX FPGA designs, industrial control cards, networking line cards, prototyping platforms, and test equipment. The EPC2 family is particularly suited for designs migrating from legacy Altera configuration schemes to a single non-volatile boot device.
Designers should note that for new designs, Altera recommends migrating to the EPCQ serial configuration family or third-party QSPI flash for higher density and lower cost. Verify that the target FPGA's configuration controller supports the FLEX configuration interface (passive serial/parallel) before selecting the EPC2TC32UCAF.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in a single manufacturer datasheet, including cross-brand equivalents and footprint-compatible variants.
Alternatives de remplacement direct pour EPC2TC32UCAF — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EPC2TC32UCAF (même facteur de forme et même empreinte) — différant par Package, Interface, Supply Voltage (VCC), Memory Size, Cascade Support.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPC2TC32
✅ Remplacement direct✓ En stock
$14.5 / unité
Voir la fiche technique →EPC2TC32N
✅ Remplacement direct✓ En stock
$9.2 / unité
Voir la fiche technique →EPC2TC32UCAD48
✅ Remplacement direct✓ En stock
$10.4 / unité
Voir la fiche technique →EPC2TC32HAF48
✅ Remplacement direct✓ En stock
$15.2 / unité
Voir la fiche technique →EPC2TC32CAF48
✅ Remplacement direct✓ En stock
$9.85 / unité
Voir la fiche technique →EPC2T32UCAF48
✅ Remplacement direct✓ En stock
$10.05 / unité
Voir la fiche technique →EPC2TC32UCAF Valeurs maximales et caractéristiques électriques
| Device Type | Configuration PROM (CPLD-style boot memory) |
| Memory Density | 1.6 Mbit |
| Supported FPGA Families | Altera APEX, Cyclone, Stratix, FLEX (LUT devices) |
| Supply Voltage (VCC) | 3.0 V to 3.6 V |
| I/O Logic Levels | 3.3 V / 2.5 V compatible |
| Configuration Interface | FLEX passive serial / passive parallel synchronous / passive parallel asynchronous |
| Programming Interface | IEEE 1149.1 (JTAG) in-system programmable |
| Daisy-Chain Support | Yes (via nCASC pin, multi-device FLEX chain) |
| Compression Support | Altera bitstream compression compatible |
| Boîtier | 32-pin TQFP (CAF48), 7x7 mm |
| Type de montage | Surface Mount |
Configuration des broches de EPC2TC32UCAF
| Broche 1 | DATA — Configuration data output to FPGA |
| Broche 2 | DCLK — Configuration clock output to FPGA |
| Broche 3 | nCONFIG — Configuration control input (active low) |
| Broche 4 | nSTATUS — Configuration status output (active low) |
| Broche 5 | nCASC — Cascade output for daisy-chained devices (active low) |
| Broche 6 | TDI — JTAG Test Data In |
| Broche 7 | TDO — JTAG Test Data Out |
| Broche 8 | TMS — JTAG Test Mode Select |
| Broche 9 | TCK — JTAG Test Clock |
| Broche 10 | VCC — Power supply (3.3 V nominal) |
| Broche 11 | GND — Ground |
| Broche 12 | NC — Not connected (per datasheet) |
| Broche 13 | NC — Not connected (per datasheet) |
| Broche 14 | OE — Output enable for DATA pin |
| Broche 15 | nCS — Chip select (active low) |
| Broche 16 | VCC — Power supply (3.3 V nominal) |
| Broche 17 | GND — Ground |
| Broche 18 | ADD[0] — Address bit 0 (parallel configuration mode) |
| Broche 19 | ADD[1] — Address bit 1 (parallel configuration mode) |
| Broche 20 | ADD[2] — Address bit 2 (parallel configuration mode) |
| Broche 21 | ADD[3] — Address bit 3 (parallel configuration mode) |
| Broche 22 | ADD[4] — Address bit 4 (parallel configuration mode) |
| Broche 23 | ADD[5] — Address bit 5 (parallel configuration mode) |
| Broche 24 | ADD[6] — Address bit 6 (parallel configuration mode) |
| Broche 25 | ADD[7] — Address bit 7 (parallel configuration mode) |
| Broche 26 | ADD[8] — Address bit 8 (parallel configuration mode) |
| Broche 27 | ADD[9] — Address bit 9 (parallel configuration mode) |
| Broche 28 | ADD[10] — Address bit 10 (parallel configuration mode) |
| Broche 29 | ADD[11] — Address bit 11 (parallel configuration mode) |
| Broche 30 | ADD[12] — Address bit 12 (parallel configuration mode) |
| Broche 31 | GND — Ground |
| Broche 32 | VCC — Power supply (3.3 V nominal) |
Applications typiques
EPC2TC32UCAF convient pour 6 applications: Cyclone FPGA Boot Memory, APEX 20K Configuration Storage, Industrial Control Card Boot, Networking Line Card FPGA Boot, FPGA Prototyping Platform, Legacy Test & Measurement Equipment.
Cyclone FPGA Boot Memory
The EPC2TC32UCAF stores the 1.6 Mbit-class configuration bitstream that boots Altera Cyclone-series SRAM FPGAs on power-up through the FLEX passive-serial or passive-parallel configuration interface. Placed on the same board as the FPGA, it frees the host CPU from boot responsibility and is supported by Altera's bitstream compression, which lets designs targeting higher-density Cyclone II parts squeeze into the 1.6 Mbit window. A typical reference design ties nCONFIG/nSTATUS to the FPGA and uses an external 10 kohm pull-up on nCONFIG, with the EPC2TC32UCAF driving DCLK and DATA into the FPGA's configuration pins. Designers should add a 0.1 uF decoupling cap adjacent to VCC and ensure JTAG chain integrity for in-field updates.
Recommandé
APEX 20K Configuration Storage
Altera APEX 20K devices use the FLEX passive-parallel synchronous configuration mode, which is natively supported by the EPC2TC32UCAF's parallel data path and DCLK output. A 1.6 Mbit EPC2TC32UCAF is sufficient for many APEX 20K100 and 20K200 designs after Altera bitstream compression, while higher-density APEX parts require daisy-chained EPC2 devices via the nCASC pin. The advantage over raw parallel flash is the integrated configuration state machine that handles handshaking, error detection, and reconfiguration autonomously, eliminating the need for an external CPLD or microcontroller to manage FPGA boot.
Recommandé
Industrial Control Card Boot
Industrial PLC and motion-control cards built on Altera FLEX 10K or ACEX 1K devices commonly use the EPC2TC32UCAF as the dedicated boot memory because it survives the wider industrial temperature range (when ordered as the N suffix) and supports JTAG-based firmware refresh in the field without removing the card. The 32-pin TQFP footprint is large enough to be hand-reworked, which matters in low-volume industrial builds where field replacements are expected. Compared with socketed boot PROMs, the surface-mount TQFP is more vibration-tolerant in factory-floor enclosures, and the JTAG ISP path lets technicians update logic without an external programmer.
Recommandé
Networking Line Card FPGA Boot
Networking line cards that integrate Altera FLEX or APEX FPGAs for packet processing rely on the EPC2TC32UCAF to deliver the bitstream during line-card hot-swap or power-up sequencing. The PROM's support for multi-device FLEX daisy-chaining via nCASC lets a single configuration controller boot several FPGAs on the line card sequentially, which is essential when multiple FPGAs share a configuration bus. Industrial-grade EPC2 variants (N suffix) survive the thermal profile of network switching equipment, and the JTAG chain allows remote firmware rollouts through the card's management processor without taking the card offline.
Recommandé
FPGA Prototyping Platform
Prototyping boards for Altera FLEX, Cyclone, and APEX FPGAs often include a socketed or soldered EPC2TC32UCAF to allow engineers to load alternate bitstreams during bring-up. The PROM's JTAG ISP path means designers can swap logic without a separate parallel programmer, and the 1.6 Mbit density accommodates most reference designs in the Cyclone and APEX families. The 32-TQFP footprint is breadboard-friendly and compatible with standard Altera development kit schematics, making the EPC2TC32UCAF a drop-in configuration memory for university and R&D labs.
Recommandé
Legacy Test & Measurement Equipment
Test and measurement instruments built around Altera FLEX 10K or ACEX 1K FPGAs - particularly older logic analyzers and protocol testers - frequently use the EPC2TC32UCAF as the boot memory because the FLEX configuration interface is exactly what those legacy FPGAs require. The PROM's 3.0 V to 3.6 V supply range aligns with the instrument's existing 3.3 V rail, and the 32-TQFP footprint is widely supported by legacy PCB footprints. Service shops maintaining these instruments stock EPC2 family variants for board-level repair.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPC2TC32UCAF — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EPC2TC32 | EPC2TC32N | EPC2TC32UCAD48 | EPC2TC32HAF48 | EPC2TC32CAF48 | EPC2T32UCAF48 |
|---|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | 32-TQFP (7x7 mm) | 32-TQFP - same | 32-TQFP - same | 32-TQFP - same | 32-TQFP - same | 32-TQFP - same | 32-TQFP - same |
| Memory Density | 1.6 Mbit | 1.6 Mbit | 1.6 Mbit | 1.6 Mbit | 1.6 Mbit | 1.6 Mbit | 1.6 Mbit |
| 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 | 3.0 V to 3.6 V |
| JTAG ISP | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Daisy-Chain Support | Yes (nCASC) | Yes | Yes | Yes | Yes | Yes | Yes |
| Lead-Free / RoHS | Yes (UCAF suffix) | No (legacy) | No (legacy) | Yes | Yes | Yes | Yes |
Principaux différenciateurs
- Lead-free RoHS-compliant 32-TQFP variant (vs EPC2TC32 (legacy non-RoHS))
- Industrial temperature option within the same footprint (vs EPC2TC32N)
- Same 1.6 Mbit density across the EPC2 family (vs EPC2T32UCAF48)
Notes de conception
The EPC2TC32UCAF operates from a single 3.0 V to 3.6 V rail with 3.3 V nominal. Place a 0.1 uF decoupling capacitor as close as possible to each VCC pin (the 32-TQFP exposes multiple VCC pins) and add a bulk 10 uF tantalum or ceramic cap on the same rail to suppress configuration-mode current transients. The internal configuration state machine draws current in bursts during FPGA configuration, so a regulator with at least 100 mA headroom is recommended.
Keep the DCLK trace between the EPC2TC32UCAF and the target FPGA short and impedance-controlled - reflections on DCLK cause configuration errors that are hard to debug. Route DATA, nCONFIG, nSTATUS, and nCASC on the same layer with ground reference, and avoid routing them over split planes. JTAG pins (TDI/TDO/TMS/TCK) should be brought to a header for in-system programming; add 10 kohm pull-ups to VCC on TMS and TCK to keep the JTAG state machine in a known reset state during power-up.
Do not confuse the EPC2 family with the EPCS or EPCQ families - EPC2 uses the FLEX passive-serial/parallel configuration interface, while EPCS/EPCQ use the active-serial interface. Newer Altera/Intel Cyclone IV and later devices do not support the EPC2 interface natively, so a PCB redesign is required to migrate. Also note that the 'UCAF' suffix indicates lead-free/RoHS 32-TQFP packaging - substituting the non-UCAF 'EPC2TC32' on a RoHS-compliant build is a compliance violation.
When daisy-chaining multiple EPC2TC32UCAF devices to boot several FPGAs, pay attention to the nCASC timing - the cascade propagation delay adds to total configuration time. For boot chains exceeding 4 devices, consider using a faster configuration clock or splitting into multiple chains. Series termination (33 ohm) on DCLK and DATA lines is recommended for chains whose total trace length exceeds 6 inches.
Informations de conformité
RoHS compliance inferred from the 'UCAF' lead-free suffix in the Altera ordering code; REACH, halogen-free, and conflict-minerals status were not present in the verified web data and remain unknown. AEC-Q100 is not applicable because this is a configuration PROM, not an automotive-grade IC.
