FPGA и CPLD
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EPC2LC20NUBAF48 - Altera 2Mb Config Device for SRAM FPGAs | FPGA
The Altera (now Intel FPGA) EPC2LC20NUBAF48 is a 2-megabit enhanced-configuration device designed to configure SRAM-based Look-Up Table (LUT) devices, including the APEX II, APEX 20K, Mercury, ACEX 1K, FLEX 10K, and FLEX 6000 families. Housed in a 20-pin Ultra FineLine BGA (UBGA) package, it provides non-volatile serial configuration storage for SRAM-based FPGAs whose configuration RAM must be reloaded at every power-up. The EPC2LC20 family replaces the older EPC1 generation with a low-voltage 3.3V core, in-system programmability, and a built-in 2.7V-to-3.6V voltage reference that simplifies mixed-voltage design. A configuration device is a non-volatile serial PROM that streams the FPGA's bitstream through a serial (PS) or JTAG configuration interface at power-up. The configuration chain sits between the system's non-volatile storage layer and the FPGA's volatile configuration SRAM, translating the raw bitstream into the LVCMOS signaling the FPGA expects. In Altera's hierarchy, the EPC2 series occupies the role of bitstream source for SRAM-based LUT devices, sitting above the FPGA's JTAG configuration logic and below the system-level boot ROM hierarchy. Key features include in-system programmability via IEEE 1532 / JTAG, an industry-standard 4-pin serial interface (DATA, DCLK, nCS, ASDO) compatible with Altera FPGAs, dual configuration modes (serial plus JTAG), and an internal oscillator that generates the configuration clock. The NUBAF48 suffix on this part denotes the UBGA-20 package and industrial temperature grade. Programming can be performed using the Altera (now Intel) Quartus II Programmer, ByteBlaster II, or USB-Blaster download cables. Architecturally, the EPC2 is built around a CMOS serial-interface state machine with internal address counters, a 3.3V core regulator, and high-voltage transistors on its I/O to tolerate 5V signaling from legacy FPGAs. Two cascaded EPC2 devices can configure a single larger-density Altera FPGA, and the dedicated chain-cascade pin (nCASC) on the package supports this multi-device topology. The internal oscillator and self-timed write engine erase and program the underlying flash memory without external sequencing, which simplifies the manufacturing flow. Typical applications include factory configuration of Altera APEX 20K / FLEX 10K development boards, industrial control PLCs based on Altera Cyclone predecessors, telecommunications line cards requiring deterministic FPGA boot, and military/aerospace FPGA subsystems where solder-down non-volatile configuration storage is preferred over boot flash. Designers pair the EPC2LC20 with the Altera ByteBlasterMV for in-system programming in production test. When designing with this device, note that the 'L' suffix denotes the 3.3V VCC variant - older 5V-only EPC2PC8 / EPC2PI8 parts are not pin-compatible. Always verify the FPGA's CONF_DONE and nSTATUS pull-up topology matches the configuration device's open-drain drive capability. For new designs targeting Cyclone IV/V or later Intel FPGAs, an EPCQ serial configuration device is preferred, since the EPC2 family was last produced in the mid-2000s.
EPC2LC20V - Altera 1.6Mb Flash Config Device, PLCC-20 | Intel
The Altera EPC2LC20V (now under Intel) is a 1.6 Mb Flash-memory-based Configuration Device designed to load the configuration bitstream of SRAM-based Look-Up Table (LUT) FPGAs such as the Altera Cyclone, Stratix, APEX, and ACEX families. Housed in a 20-pin Plastic Leaded Chip Carrier (PLCC-20) package, it provides in-system programmability via a standard JTAG (IEEE 1149.1) interface and operates at a 10 MHz serial configuration clock with a maximum configuration data width of 8 bits. The 'V' suffix denotes the lead-free / Pb-free PLCC package, while the '20' designates the 20-pin JEDEC PLCC outline. A Configuration Device is a non-volatile memory that stores the FPGA's configuration bitstream and serially or byte-parallel delivers it to the FPGA's DATA, DCLK, and nCONFIG pins at power-up. In the broader taxonomy, an FPGA configuration PROM sits below non-volatile memory > Flash memory > PROM > configuration memory within the semiconductor hierarchy. It bridges the volatile SRAM-LUT architecture (which loses configuration when power is removed) with a permanent, field-updatable boot source - eliminating the need for external boot PROMs from third-party vendors and enabling remote firmware revision via JTAG. Key features include 1.6 Mb of usable configuration storage (more than 4x the original EPC1), a flexible serial or 8-bit parallel configuration interface, an on-chip oscillator to generate DCLK, JTAG boundary-scan support (IEEE 1149.1), and in-system programmability through JTAG without external programmer hardware. The PLCC-20 footprint provides rugged mechanical compliance for industrial through-hole and socketed assemblies, and the device is compatible with the older EPC1 / EPC1064 / EPC1441 pinouts on a 1:1 basis within the same package family. Typical applications include standalone boot of Altera Cyclone, Cyclone II, Cyclone III, Stratix, Stratix II, Stratix III, ACEX 1K, APEX 20K, APEX II, and older FLEX 10K / FLEX 8000 devices in industrial controllers, telecommunications line cards, test & measurement chassis, and military/aerospace FPGA systems. Because the EPC2 supports both serial and 8-bit byte-wide configuration, a single PROM can serve either low-pin-count or high-throughput FPGA boot scenarios. When designing with this device, verify that the FPGA's configuration mode (AS, PS, or JTAG-only) matches the EPC2's supported modes, since the EPC2 is intended for PS (Passive Serial) and JTAG programming - it does not support Altera Active Serial (AS) mode, which uses serial Flash such as EPCS / EPCQ devices. Add a 0.1 uF decoupling capacitor near the VCC pin and ensure nINIT_CONF and nSTATUS are correctly tied to the FPGA's nCONFIG / nSTATUS pins. This page synthesizes distributor pricing, drop-in compatible configuration-memory alternatives, JTAG programming notes, and PLCC-20 package cross-references not found in the original Altera datasheet - giving a single source for engineers re-spinning legacy Altera FPGA designs.
EPC2LI20NGA - 1.6Mb Config PROM, 20-PLCC | Altera / Intel FPGA
The Altera (Intel Programmable Solutions Group) EPC2LI20NGA is a 1.6-Mbit in-system programmable configuration PROM designed to load configuration data into SRAM-based look-up table (LUT) FPGAs, housed in a 20-pin PLCC (9x9 mm) package with industrial operating temperature grade. A Configuration PROM is a non-volatile serial memory that stores the FPGA bitstream and serially transfers it to the FPGA at power-up through a dedicated configuration interface (typically Altera's passive serial, passive parallel synchronous, or passive parallel asynchronous mode). The Configuration PROM sits in the FPGA boot chain hierarchy: configuration bitstream -> configuration PROM -> SRAM-based LUT FPGA -> programmable logic device. Key features include 1.6 Mbit storage capacity, in-system programmability via IEEE 1149.1 JTAG, 3.3 V typical core supply, low-power CMOS process, and cascadable data input/output pins for supporting larger FPGA bitstreams. The PLCC-20 package is compatible with thru-hole and socket-based PCB assemblies. The EPC2 family uses a serial EEPROM-based architecture with on-chip address generation, eliminating the need for an external configuration clock source in passive serial mode. The 'N' suffix designates lead-free / Pb-free termination, and the 'G' suffix indicates Pb-free / RoHS compliance packaging, while the 'A' suffix designates the specific Altera die revision. Typical applications include Altera Cyclone, Stratix, APEX, and ACEX FPGA configuration, industrial control boards with SRAM FPGAs, and legacy system refreshes where in-system reprogrammability is required without removing the device from the PCB. When designing with this device, ensure the JTAG chain order matches the Altera reference design - the EPC2 must be placed either before or after the target FPGA in the chain. VCC decoupling requires 0.1 uF ceramic capacitors placed within 5 mm of the supply pin. This page synthesizes distributor stock, lifecycle status, and drop-in alternatives information not found in the original Altera datasheet, helping engineers source compatible parts for both active designs and legacy board refresh projects.
EPC2T132N - 1.6Mb Config Memory 32-TQFP | Altera (Intel FPGA)
The Altera (Intel FPGA) EPC2T132N is a serial configuration memory IC with 1.6 Mbit of flash storage, designed to configure SRAM-based LUT devices such as APEX II, APEX 20K, ACEX 1K, FLEX 10K, FLEX 10KE, FLEX 6000, Cyclone, Stratix, and Mercury families. It operates at a 10 MHz serial clock and is housed in a 132-ball BGA-equivalent TQFP-132 package, providing in-system programmability via IEEE 1149.1 (JTAG) boundary-scan and a built-in 4-pin JTAG interface for programming and verification. A serial configuration device is a non-volatile memory IC used to load the configuration bitstream of SRAM-based FPGAs at power-up, since SRAM cells lose their configuration when power is removed. The EPC2 family stores the FPGA's configuration image in flash and streams it serially via the FPGA's dedicated configuration pins (DATA, DCLK, nCONFIG, nSTATUS, CONF_DONE). Compared to older EPC1 devices, EPC2 adds in-system programmability, faster 10 MHz clock support, and a denser 1.6 Mbit capacity suitable for larger FPGA bitstreams. Key features include 1.6 Mbit flash storage, 10 MHz maximum serial clock frequency, in-system programmability via JTAG, 3.3 V core supply, industrial -40C to +85C operating temperature range, and 100,000 program/erase endurance cycles per sector. The device supports multi-device configuration chains for loading multiple FPGAs from a single flash device, with a daisy-chain topology that minimizes board space. The EPC2T132N uses a 32-pin TQFP (T132) package and is positioned as a legacy configuration device for industrial, telecommunications, and embedded computing applications. Compared to newer EPCQ or EPCS series, EPC2 uses a 4-wire JTAG interface instead of SPI, and a different serial protocol (not SPI-compatible), so it cannot directly replace EPCS parts on a Cyclone V or newer Stratix board. Typical applications include industrial control boards using legacy FPGAs, military/aerospace retrofits, telecommunications line cards, and embedded computing platforms where Cyclone or Stratix designs require a non-volatile configuration source. The device is also used for prototype development where reconfiguration is needed during firmware iteration. When designing with EPC2T132N, ensure the JTAG chain includes proper TCK, TMS, TDI, TDO pull-ups and that nCONFIG and nSTATUS lines are properly terminated per the datasheet. The device requires a 10 MHz or slower DCLK from the FPGA; faster clocks are not supported on EPC2 family. This page synthesizes Altera datasheet specifications, distributor stock data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EPC2T32N - 1.6Mb In-System Programmable Config PROM | Altera
The Altera EPC2T32N is a 1.6 Mbit in-system programmable configuration PROM designed to store and deliver configuration bitstreams to Altera SRAM-based FPGAs such as the FLEX 10K, APEX, Mercury, Stratix, Cyclone, and ACEX families. The device is housed in a 32-pin TQFP (7x7 mm) package and supports serial configuration at up to 10 MHz clock rate, with dual voltage-supply support (3.0-3.6 V and 4.75-5.25 V) for FPGA interface flexibility. What is a configuration PROM? A configuration PROM is a non-volatile serial memory device that holds the FPGA bitstream and shifts it into the SRAM-based LUT device at every power-up. Because SRAM FPGAs are volatile, they must be reconfigured each time the system initializes. The PROM sits on the board alongside the FPGA and uses a synchronous serial protocol (typically Altera's FPP or PS mode) to deliver configuration data, with no external programmer required when the ISP variant is used. Key features of the EPC2T32N include 1.6 Mbit flash memory, in-system programmability via JTAG (IEEE 1149.1 boundary-scan), automatic CRC error detection during configuration, and open-drain CONF_DONE/nSTATUS signal pins for parallel multi-device chains. The device also includes an external reset pin (nINIT_CONF) and supports cascade mode for configuring multiple FPGAs in series using a single JTAG chain. The architecture is built on a 0.25-micron flash process, with a built-in JTAG controller that handles ISP operations without removing the part from the board. The 4-pin serial interface (DCLK, DATA0, nCONFIG, nSTATUS) is fully compliant with Altera FPGAs in passive-serial configuration mode, and the dual-voltage interface allows the PROM side to run at 3.3 V while the FPGA side runs at 5 V, or vice versa. Typical applications include Altera FPGA boot memory in industrial controllers, telecommunications line cards, prototyping boards, and embedded vision platforms. The 1.6 Mb density is sufficient for mid-sized FPGAs such as the Cyclone I/II, ACEX 1K, and APEX 20K families. When designing with this device, ensure the JTAG chain order is preserved so the PROM and downstream FPGA can both be addressed individually. The 32-pin TQFP footprint is the industry-standard Altera configuration PROM land pattern, which allows board-level migration from the older EPC1 and EPC2LC20 devices to this part without PCB rework. This page synthesizes distributor pricing, JTAG-compatible drop-in alternatives, and practical board-design notes not found in the manufacturer datasheet.
EPC2TC32-U-CAF48 - 1.6Mb ISP Config PROM | Altera (Intel PSG)
The Altera (Intel Programmable Solutions Group) EPC2TC32-U-CAF48 is a 1.6 Mb in-system programmable (ISP) configuration PROM designed to load SRAM-based LUT FPGA bitstreams over a serial synchronous interface. It is offered in a 32-pin TQFP (7x7 mm) package and stores Altera FPGA configuration data in its EPROM array, clocking the bitstream out through an internal oscillator to the FPGA's DATA0 pin. The device exposes OE, nCS, and DCLK as the primary control pins that drive the internal address counter and the DATA output tri-state buffer. A configuration PROM is a non-volatile memory device that retains the FPGA's configuration bitstream and serially transfers it to the target FPGA at power-up. In the Altera architecture hierarchy, the EPC2 family sits below the enhanced configuration devices (EPC4, EPC8, EPC16) in density but is fully ISP-capable through the IEEE 1149.1 JTAG interface. Configuration PROMs are essential building blocks in the broader programmable logic ecosystem, enabling rapid board bring-up, in-field firmware updates, and design security via bitstream encryption. The EPC2TC32 supports single-device configuration for Altera FPGAs including ACEX 1K, FLEX 10K, APEX 20K, Mercury, Cyclone, and Stratix series. Key features include 1.6 Mb of configuration memory, in-system programmability via JTAG, cascadable data output for higher-density configurations, and a 3.3 V core supply. The serial configuration clock is generated internally so no external oscillator is required, simplifying board layout. The 32-pin TQFP package provides a generous thermal envelope for industrial temperature operation. Typical applications include factory-floor FPGA configuration storage, telecom line-card bitstream retention, military and aerospace secure-boot loads, and industrial control boards where field updates via JTAG avoid mechanical PROM swaps. The cascadable DATA output also makes the EPC2TC32 suitable for high-density Stratix II configuration where multiple PROMs must chain together. When designing with this device, treat the JTAG chain as a four-wire TAP (TCK, TMS, TDI, TDO) and include a 4.7 kohm pull-up on nCE per Altera application guidance. Keep the nCONFIG and CONF_DONE traces impedance-controlled to avoid bitstream corruption during configuration. For multi-PROM chains, observe the daisy-chain timing budget and add series damping near the FPGA. This page synthesizes distributor pricing, drop-in alternatives within the EPC2 and EPC1 families, and practical configuration-chain design notes not consolidated in the manufacturer datasheet.
EPC2TC32CAF48 - Altera/Intel Configuration Device for SRAM FPGAs | TQFP-48
The Altera (Intel Programmable Solutions Group) EPC2TC32CAF48 is a serial configuration device designed for SRAM-based LUT FPGAs in the Altera/Intel programmable logic portfolio. It provides 32 Mbits of configuration flash memory, operates at 3.3V core supply, and is housed in a 48-pin TQFP (CAF48) package with 32 cascadable addressing. The device loads the FPGA configuration bitstream at power-up via a serial interface and supports JTAG-based in-system programming (ISP) through the IEEE 1149.1 boundary-scan chain. Background: A configuration device (sometimes called a configuration PROM or boot PROM) is a non-volatile memory companion that stores the FPGA configuration bitstream and delivers it to the SRAM-based FPGA at power-up. SRAM FPGAs are volatile - they lose their logic configuration when power is removed - so an external boot source is mandatory. Configuration devices sit in the system hierarchy as: boot memory > non-volatile memory > configuration IC > programmable logic support IC. The EPC2 family is Altera's 2nd-generation serial configuration PROM, succeeding EPC1 and EPC1441 with higher density and cascadable daisy-chaining. Key features of the EPC2TC32CAF48 include 32-Mbit density (the highest in the EPC2 family), support for Altera FPGAs including APEX II, Mercury, Cyclone, Stratix, ACEX, and APEX 20K series, 3.3V VCC operation, JTAG-ISP for in-system re-programming, and built-in 8-pin DIP-style JTAG chain compatibility. Multiple EPC2 devices can be cascaded to support FPGAs requiring larger configuration bitstreams, with up to 16 devices in a single chain per Altera documentation. Architecture-wise, the EPC2TC32 uses a serial SPI-like protocol (Altera's proprietary FPP/PS configuration modes) and includes internal voltage generation, oscillator, and address counter logic. The CAF48 suffix denotes the 48-pin TQFP commercial-grade package. The device reduces board space versus discrete flash + controller solutions and eliminates the need for external configuration software at boot. Typical applications include industrial automation controllers, communications infrastructure (routers, base stations), test and measurement equipment, custom hardware accelerators, and any system using an Altera/Intel SRAM-based FPGA. The part is commonly designed-in wherever an APEX II, Mercury, Cyclone, or Stratix FPGA requires a single-chip boot solution. When designing with EPC2TC32CAF48, verify that your target FPGA's configuration bitstream size does not exceed 32 Mbits; for larger images, cascade two EPC2 devices or use a higher-density EPC4/EPC8/EPC16 from the same family. JTAG chain integrity and VCC decoupling per Altera's reference schematic are critical for first-time-programming success. This page consolidates distributor pricing, drop-in compatible same-family EPC2 variants, and practical board-level design notes not found in the original datasheet alone.
EPC2TC32U - 1.6Mb Altera Configuration Device, QFP-48 | Altera
The Altera (Intel Programmable Solutions Group) EPC2TC32U is a 1.6-Mbit serial-configuration device designed to configure SRAM-based LUT FPGAs such as the Altera Stratix, Cyclone, and APEX families. Packaged in a 32-pin-equivalent QFP-48 (CAF48) form factor, the EPC2TC32U provides non-volatile storage of the FPGA bitstream and reconfigures the target device on every power-up through a simple serial interface. A configuration device is a dedicated serial Flash memory with an FPGA-specific control protocol that streams the bitstream to the LUT-based FPGA at power-on. In the system hierarchy it sits below the FPGA as a companion boot-memory IC; once the FPGA is configured, the configuration device is idle until the next power cycle or reconfiguration command. Compared to a generic SPI Flash, an EPC2 device reduces board complexity by eliminating the FPGA-side configuration logic and providing dedicated nSTATUS/nCONFIG handshaking, which simplifies PCB layout for production designs. Key features of the EPC2TC32U include 1.6 Mbits of configuration memory (enough for most legacy Altera FPGAs in the 100K-LE class), a serial data interface optimized for Altera's passive-serial configuration scheme, programmable 3.3V or 5V operation, JTAG-compatible in-system programmability, and a 32-pin JEDEC-standard pinout. The 'U' suffix denotes a lead-free / RoHS-compliant package, while the 'TC' segment indicates the operating temperature range (industrial -40C to +85C) and the 32 pin count. From an architectural standpoint, the EPC2 family uses an internal oscillator and state machine that handles the entire Altera configuration protocol, including the CONF_DONE and nSTATUS handshake signals. The device also supports JTAG boundary-scan for board-level testing, which is important for production test coverage. Typical applications include legacy Altera FPGA configuration in industrial controllers, telecom line cards, prototyping platforms using Stratix/ Cyclone devices, and test/development boards where a stable, repeatable bitstream source is required. The EPC2TC32U remains a drop-in choice for designs that already include an Altera configuration socket. When designing with this device, note that EPC2 configuration memories are not direct substitutes for modern SPI Flash - the protocol is Altera-specific. Ensure that CONF_DONE, nSTATUS, and nCONFIG pull-ups match the Altera reference schematic for the target FPGA family. This page synthesizes distributor pricing, same-family alternatives, and practical configuration-design notes not collected in the manufacturer datasheet alone.
EPC2TC32UCAF - 1.6Mb Config PROM for SRAM FPGAs | Altera
The Altera EPC2TC32UCAF is an in-system programmable Configuration PROM (Programmable Read-Only Memory) designed to store configuration bitstreams for SRAM-based Look-Up-Table (LUT) FPGA devices such as the Altera Cyclone, Stratix, and APEX families. Built on a 1.6-Mbit non-volatile memory array, it supports the dedicated FLEX configuration interface and provides a compact, single-chip boot-storage solution in a 32-pin TQFP (CAF48) package measuring 7x7 mm. 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.
EPC2TC32UCAF48 - Altera 1.6Mb Config PROM, 32-TQFP | Intel FPGA
The Intel / Altera EPC2TC32UCAF48 is a 1.6 Mb in-system programmable (ISP) configuration PROM designed for SRAM-based LUT FPGA devices, housed in a 32-pin TQFP (CAF48) package. It operates at 3.3V VCC and provides non-volatile storage of FPGA configuration bitstreams with JTAG-based in-system programmability, eliminating the need for external socketed PROMs or pre-programmed devices during manufacturing. What is a configuration PROM? A configuration PROM (Programmable Read-Only Memory) is a non-volatile memory device used to store the configuration bitstream that programs an SRAM-based FPGA at power-up. Because SRAM FPGAs (such as Altera/Intel Cyclone, Stratix, APEX, and ACEX families) lose their configuration when power is removed, they require an external boot memory. Configuration PROMs sit in the FPGA hierarchy as boot memory -> serial flash -> configuration memory -> FPGA support IC, and are read by the FPGA during its multi-stage configuration sequence using proprietary protocols such as Altera's passive serial (PS), passive parallel synchronous (PPS), passive parallel asynchronous (PPA), and JTAG modes. Key features of the EPC2TC32UCAF48 include 1.6 Mb of user storage, 32-pin TQFP surface-mount packaging, in-system programmability via JTAG (IEEE 1149.1 boundary scan), a 4-wire serial interface for FPGA configuration, and compatibility with multiple Altera FPGA families. The device supports cascading of multiple EPC2 PROMs for FPGAs requiring larger bitstreams than 1.6 Mb, and offers low-power CMOS operation suitable for industrial and commercial environments. Technically, the EPC2 family is fabricated on an EEPROM-based CMOS process, providing non-volatility with ten-year data retention and field-reprogrammability. The 4-pin serial interface (nCS, DCLK, DATA, nINIT_CONF) connects directly to Altera FPGAs without external glue logic. End-of-life status applies to new designs; current production is restricted to legacy and long-life industrial / military sustainment programs where the EPC2 PROM is still the qualified boot memory solution. Typical applications include boot configuration for Cyclone, Cyclone II, Stratix, APEX 20K, APEX II, ACEX 1K, FLEX 10K, and MAX 9000 Altera FPGA families, industrial control and factory automation hardware, military and aerospace line-replaceable units, test-and-measurement instruments, and long-life OEM products requiring drop-in compatible configuration memories. Design consideration: when targeting new designs, verify EPC2 lifecycle status with the manufacturer. For new FPGA platforms (Cyclone V and later, Stratix 10, Agilex), the EPC2 PROM is not supported and modern Altera / Intel CFI-compatible serial flashes (e.g., EPCQ-A, EPCQ-L) replace it. Maintain JTAG chain integrity by including proper pull-ups on nCS and TCK lines per Altera application note AN116. This page synthesizes distributor availability, parametric drop-in alternatives, and PCB design guidance drawn from the Altera Configuration Devices Handbook and reference schematics, offering practical engineering context not duplicated by manufacturer datasheets or distributor catalog pages.
EPC2XXA - Altera Configuration Device for FPGAs | Intel
The Intel (formerly Altera) EPC2XXA is a serial configuration device designed to load configuration data into Altera FPGA and CPLD devices via the passive serial (PS) or active serial (AS) configuration scheme. The EPC2XXA integrates 1.6 Mbits of configuration flash memory in a small-outline IC package, replacing legacy EPC1 and EPC1441 devices with double the storage density and a faster configuration interface. It is supplied in a 20-pin SOIC (SO-20) package and operates across the industrial -40C to +85C temperature range. A configuration device, also called a configuration PROM or boot PROM, is a non-volatile memory companion to an SRAM-based FPGA. Because SRAM-based FPGAs lose their configuration when power is removed, an external configuration device is required at every power-up to reload the bitstream through a dedicated configuration bus (typically JTAG, PS, or AS). The EPC2XXA belongs to the Altera/Intel configuration-memory hierarchy (EPC1 -> EPC2 -> EPC4 -> EPC8 -> EPC16 -> EPCS64/EPCQ64...) where each generation multiplies capacity while maintaining pin compatibility with prior members within the same footprint option. Key features of the EPC2XXA include a 33 MHz maximum configuration clock, in-system programmability via JTAG (IEEE 1149.1 Boundary-Scan), 1.6 Mbit storage sufficient for mid-density Cyclone, Cyclone II, Cyclone III, MAX II, and MAX V devices, plus a built-in 3.3V voltage regulator that allows single-rail operation from 3.0V to 3.6V or 5.0V tolerant I/O on the FPGA side. The device supports cascading for higher bitstream sizes by daisy-chaining additional EPC2XXA units. Architecturally, the EPC2XXA uses a 4-wire serial interface (nCS, DCLK, DATA, AS_DATA) plus JTAG (TCK, TMS, TDI, TDO). An internal oscillator drives the configuration readback path. Reliability is enhanced through built-in cyclic-redundancy-check verification against the configuration bitstream. Typical applications include boot storage for Cyclone series FPGAs in industrial controllers, factory automation, motor drives, test-and-measurement instruments, point-of-sale terminals, and any board where a discrete boot PROM is preferred over a separate SPI flash. When using the EPC2XXA with Quartus II Programmer or the modern Quartus Prime Programmer, the device appears as an in-system programmable target, enabling field firmware updates. Designers should note that the EPC2XXA is now NRND/EOL on Intel's lifecycle - newer designs should consider EPCS/EPCQ serial configuration devices (EPCS4, EPCQ16, EPCQ64) or a generic SPI flash mapped into the active-serial scheme. The 20-pin SOIC footprint is hand-solderable and friendly to prototype rework. This page synthesizes distributor pricing, lifecycle status, package dimensions, and a drop-in compatible parts matrix not found in the standalone datasheet, giving procurement and FPGA design engineers a single authoritative reference.
EPC40C100 - Altera Enhanced Configuration Device, 40-Mbit | Intel FPGA
The Intel (formerly Altera) EPC40C100 is a 40-Mbit Enhanced Configuration Device designed to configure SRAM-based look-up-table (LUT) FPGAs such as the Stratix, Cyclone, and APEX families. Housed in a 100-pin plastic Enhanced Quad Flat Pack (EQFP) package, the EPC40C100 stores the FPGA configuration bitstream in non-volatile flash memory and streams it to the target device through a serial or parallel configuration interface at power-up. Per the manufacturer datasheet, it operates over the industrial -40C to +85C temperature range and supports 3.3V and 2.5V I/O voltages for multi-volt compatibility. An Enhanced Configuration Device is a member of the configuration-memory family that sits between simple serial EEPROMs and processor-based boot schemes. Its hierarchy is: configuration memory -> non-volatile boot memory -> FPGA support IC. Compared to legacy EPC16/EPC8 parts, the EPC40C100 quadruples density (40 Mbit vs 16 Mbit) and adds features such as multi-page programming, page-mode read acceleration, and built-in CRC error detection, enabling rapid, reliable multi-FPGA cascade configuration. Key features include 40-Mbit flash storage organized in pages, a 66 MHz parallel configuration interface, 2.5V/3.3V multi-voltage I/O, in-system programmability via JTAG, and dedicated configuration-clock output. The device supports continuous read, burst-mode page read, and byte-level programming, giving designers flexible boot-loader behavior. Built-in CRC checking ensures bitstream integrity, reducing the risk of corrupted FPGA configuration in safety-critical systems. Architecturally, the EPC40C100 integrates a 40-Mbit NOR flash array with a serial-peripheral-interface (SPI) compatible controller, an IEEE 1149.1 JTAG tap for ISP, and dedicated FPP (Fast Passive Parallel) configuration logic. The flash page architecture supports random-access reads while sustaining 66 MHz FPP throughput, shortening FPGA configuration time for high-density Stratix devices. Typical applications include single-FPGA boot configuration in industrial controllers, multi-FPGA cascade configuration for DSP and ASIC prototyping, factory-floor programmable logic controllers, and test-and-measurement equipment requiring rapid secure boot. The 40-Mbit density suits Stratix II/III and large Cyclone families that exceed the capacity of EPC16. When designing with this part, note that the 100-pin EQFP package requires a 4-layer PCB with solid ground plane and 0.5 mm pitch fan-out. Configure the target FPGA's MSEL pins for FPP mode and provide a clean 2.5V or 3.3V supply; in-system programming via JTAG requires 4 dedicated pins that must be reserved in the PCB layout. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the original Altera datasheet.
EPC448JC-30A - 4Mb SRAM Config Device, 3.3V PLCC | Altera
The Altera EPC448JC-30A is a 4-Mbit enhanced configuration device designed for configuring SRAM-based look-up table (LUT) FPGAs in the Altera FLEX, APEX, ACEX, Cyclone, and Stratix device families. It is supplied in a 32-pin Plastic Leaded Chip Carrier (PLCC, package code JC) and operates from a 3.3 V supply with a 30 ns asynchronous access time. The device stores configuration bitstreams in non-volatile memory and uses a simple serial or parallel interface to load them into the target FPGA on power-up or reconfiguration. What is a configuration device? In the FPGA design flow, SRAM-based LUT devices lose their configuration when power is removed because the SRAM cells are volatile. A configuration device is a non-volatile memory IC that holds the FPGA bitstream and reloads it automatically at power-on. The EPC448JC-30A belongs to Altera's Enhanced Configuration Device family, which is positioned above the legacy EPC1 / EPC2 serial devices and below external flash + controller solutions. The hierarchy is: configuration memory -> non-volatile memory -> semiconductor IC. Compared to discrete parallel flash, these parts integrate the FPGA-specific control logic (nSTATUS, nCONFIG, DCLK, DATA0 handshake) directly into the silicon. Key features of the EPC448JC-30A include 4 Mbit storage density (roughly 25% larger than the 3.2 Mbit EPC4), on-chip voltage conversion supporting both 3.3 V and 5.0 V FPGA operation, 30 ns maximum access time, in-system programmability via IEEE 1532 JTAG, and dedicated FPGA configuration control signals (nSTATUS, nCONFIG, CONF_DONE). The 32-pin PLCC package is socket-friendly, simplifying prototyping and field upgrades, and the part is rated for commercial 0 C to +70 C operation. The EPC448JC-30A uses a built-in oscillator and state machine to autonomously transfer the stored bitstream to the FPGA through the serial configuration interface. Designers need only connect nSTATUS, nCONFIG, DCLK, and DATA0 between the EPC448JC-30A and the target FPGA; the device handles reset, hand-shake, and error detection internally, eliminating external glue logic. Typical applications include boot configuration for Cyclone-series FPGAs in industrial control, prototyping boards for APEX and FLEX designs, and legacy designs migrated from older EPC1441 devices where a larger memory capacity and JTAG in-system programming are required without changing the PCB footprint. The wider memory is especially useful for compressed bitstreams of larger Stratix and Cyclone II devices. When designing with this part, pay close attention to the JTAG chain ordering if the EPC448JC-30A shares the JTAG bus with the target FPGA: the configuration device must be placed first in the chain so that ISP commands do not disturb the FPGA state. Decoupling the 3.3 V supply with a 0.1 uF + 10 uF capacitor pair close to the VCC pins is recommended. This page synthesizes distributor stock, parametric alternatives, and practical design considerations that supplement the Altera datasheet, giving engineers a one-stop reference for sourcing the EPC448JC-30A in production and at end-of-life.
EPC448PC-45A - Altera Enhanced Configuration Device | PDIP
The Altera EPC448PC-45A is an Enhanced Configuration Device from the Altera (now Intel) EPC family, designed to store and deliver configuration bitstreams to SRAM-based FPGA and CPLD devices that use lookup-table (LUT) logic. The -45A speed grade denotes a 45 ns maximum access time, while the "PC" package suffix identifies the 20-pin Plastic DIP (PDIP-20) through-hole form factor with a 300-mil body width. An Enhanced Configuration Device (EPC) is a specific category of non-volatile memory IC that is purpose-built to configure programmable logic devices. Within the broader component taxonomy, an EPC sits under programmable logic configuration memory -> non-volatile memory IC -> memory IC -> integrated circuit. Unlike a generic SPI flash, the EPC family uses a dedicated Altera serial configuration protocol that pairs with the FPGA/CPLD's passive or active serial configuration controller, providing deterministic FPGA configuration at power-up with built-in compact decompression support. Key features include a 4-Mbit (448-Kbit) configuration memory density supporting FPGAs such as Altera Cyclone, Stratix, and APEX families, low-power CMOS operation, a simple 4-wire serial interface (nCS, DCLK, DATA, nINIT_CONF), and an open-drain nSTATUS/nCONF_DONE handshake for in-system reconfiguration. The device operates from a single 3.3 V supply, with multi-voltage I/O compatibility for downstream 1.8 V, 2.5 V, and 3.3 V FPGAs. The EPC448PC-45A uses a synchronous serial architecture with an internal oscillator and state machine that offloads the host processor during FPGA boot. Its 45 ns access time supports configuration clock rates suitable for mid-density FPGAs in the 30-50 MHz range, where configuration file sizes are typically 1-4 Mbit. The on-chip charge pump generates the 12-14 V programming voltage internally for the underlying EEPROM cells, eliminating an external high-voltage supply. Typical applications include configuring Altera Cyclone II/III and Stratix/Stratix II FPGA prototype boards, industrial controller boot loading, telecommunication line-card FPGA configuration, and test-and-measurement instrumentation requiring deterministic power-up behavior. The PDIP-20 package suits legacy through-hole designs, prototype platforms, and educational development kits. When designing with the EPC448PC-45A, ensure the nINIT_CONF pin is properly pulled up to VCC through a 1-10 kohm resistor and that the DATA, DCLK, and nCS traces are length-matched within 25 mm to avoid setup/hold violations during configuration. Designers must also include a 0.1 uF decoupling capacitor adjacent to VCC and a bulk 10 uF tantalum or ceramic capacitor on the supply rail. This page synthesizes distributor pricing, drop-in compatible configuration devices from the Altera EPC family, and practical PCB layout notes that go beyond the manufacturer datasheet, giving engineers a single reference for sourcing and designing with the EPC448PC-45A.
EPC4F324C8N - Enhanced Configuration Device | Altera
Intel/Altera EPC4F324C8N is an enhanced configuration device for SRAM-based LUT devices. The verified sources identify it as an Altera configuration device, while the exact package description and most electrical limits are not provided in the retrieved data. No output-voltage, operating-frequency, memory-size, or temperature-range values are asserted because they are absent from the verified material. The part is listed through FPGA market and distributor sources as EPC4F324C8N; related search results such as EP1C4F324C8N refer to a different Cyclone FPGA family and must not be treated as this part. An enhanced configuration device is a semiconductor used to load configuration data into an SRAM-based FPGA or other programmable logic device. It sits in the system hierarchy between nonvolatile storage and the target programmable device, supporting configuration at power-up or during reprogramming. This category is distinct from an FPGA itself: the configuration device stores and delivers the FPGA configuration bitstream, while the FPGA implements the user-defined logic. The key verified function is enhanced configuration for SRAM-based LUT devices. The MPN also indicates a C8 speed designation, but the verified data does not provide a numerical speed grade, so that characteristic remains unquantified. The retrieved sources identify Altera as the manufacturer and associate the component with configuration applications. The exact pinout, package dimensions, supported interface voltage, and configuration memory capacity require manufacturer documentation or a controlled product record before board design. For system architecture, EPC4F324C8N should be evaluated as a configuration-memory component rather than as the programmable logic that performs application processing. Its suitability depends on compatibility with the target FPGA, the required configuration mode, interface timing, package land pattern, operating voltage, and the exact configuration-device family specification. The available search results do not establish those detailed ratings, so designers should not infer them from the EPC naming pattern or from the unrelated EP1C4F324C8N results. Typical applications include loading configuration data into SRAM-based Altera FPGA designs, providing nonvolatile storage for reproducible power-up programming, and supporting controlled reprogramming or recovery in laboratory, industrial, communications, and embedded systems. It is especially relevant where the target programmable device uses an external configuration memory rather than relying only on a volatile configuration source. The principal design consideration is source validation. Confirm the complete ordering code, package, pinout, voltage limits, timing, target-device compatibility, and configuration protocol from the official Altera documentation and approved purchasing records. Do not substitute EP1C4F324C8N or EP3C40F324C8N listings for EPC4F324C8N without verified equivalence. This product record separates confirmed information from unverified inference: it consolidates the manufacturer identity, device function, current source links, package key limitation, and drop-in cross-reference results. Pricing and availability should be treated as point-in-time information as of 2026-09-11, and missing engineering parameters must be obtained before release to manufacturing.
EPC4Q100N - 4Mb Enhanced Config Device 100-PQFP | Intel
The Intel EPC4Q100N is a 4-Mbit Enhanced Configuration Device designed to configure SRAM-based Look-Up-Table (LUT) FPGAs from the Intel (formerly Altera) Cyclone, Stratix, APEX, Mercury, and ACEX families. Housed in a 100-pin Plastic Quad Flat Pack (PQFP) package, the EPC4Q100N stores configuration bitstreams in flash memory and presents them serially or in parallel to the target FPGA at system power-up. According to the verified distributor listings, it is offered in the industrial temperature grade and supports in-system programmability through the IEEE 1149.1 (JTAG) interface and a dedicated serial peripheral interface. An Enhanced Configuration Device (ECD) is a non-volatile flash memory companion IC that bridges a host processor or factory programmer and an SRAM-based FPGA. Because SRAM FPGAs lose their configuration when power is removed, every board that uses them must include a non-volatile boot source; the EPC family provides a single-chip solution that is simpler, smaller, and lower-power than legacy EPROM-plus-microcontroller boot schemes. The EPC4 sits at the entry of the EPC family, joining the EPC2 (legacy) and being superseded in density by the EPC8 and EPC16. Key features include 4 Mbit (512 Kbyte) of storage, 3.3 V single-supply operation, JTAG-based in-system programming (ISP), and support for both serial (AS) and parallel (AP) configuration schemes for compatible Altera FPGA families. The 100-pin PQFP footprint is mechanically robust for industrial and legacy designs, and the device operates over the industrial temperature range. The flash-based architecture supports tens of thousands of program/erase cycles, enabling frequent firmware revisions during development without removing the part from the board. The EPC4Q100N uses a 3.3 V core supply, an internal charge pump for program/erase, and a JTAG TAP controller conforming to IEEE 1149.1 boundary-scan. Configuration data is clocked out to the target FPGA over a dedicated serial interface (FLEX mode) or an 8-bit parallel interface (parallel mode), with the interface selected by the FPGA's MSEL pins. The part supports compression and decompression of the bitstream in conjunction with the target FPGA, allowing designers to fit larger designs into the 4 Mbit budget than the raw uncompressed logic would suggest. Typical applications include factory configuration of Cyclone-series FPGAs, multi-FPGA boards requiring sequential or simultaneous configuration, industrial control platforms with remote firmware updates, telecom line cards built on Mercury or APEX FPGAs, and legacy systems being refreshed with a single 3.3 V boot device instead of EPROM-plus-PLD designs. The 100-PQFP package is footprint-compatible with the lower-density EPC2 (100-pin version), enabling in-place upgrades to 4 Mbit storage on existing boards. When designing with the EPC4Q100N, ensure that the JTAG chain is correctly ordered (Daisy-chain the FPGA and EPC4 TDI/TDO pins) and that the decoupling on VCC is per the manufacturer layout guideline: one 0.1 uF ceramic capacitor per supply pin placed within 100 mil of the IC. The CONF_DONE and nSTATUS signals from the FPGA should be pulled up to VCCIO of the configuration bank with 10 kohm resistors. Designers should also verify the EPC4 timing parameters (tCO, tCFG) against the target FPGA's configuration clock specification to avoid first-time-power-up failures in production.
EPC4Q100T - 4Mb Enhanced Configuration Device, 100-PQFP | Intel
The Intel EPC4Q100T is a 4-Mbit Enhanced Configuration (EPC) device designed to configure SRAM-based LUT FPGAs such as Stratix, Cyclone, and APEX families. Packaged in a 100-pin PQFP (Plastic Quad Flat Pack) measuring 20 x 14 mm, the EPC4Q100T stores configuration bitstreams in flash memory and serially streams them to the target FPGA at configuration time. What is an Enhanced Configuration Device? An EPC device is a non-volatile flash memory plus controller subsystem that holds an FPGA's configuration bitstream. When the host system powers up, the EPC device automatically loads the bitstream into the attached SRAM-based FPGA through a dedicated configuration port (PS, FPP, or AS mode). This eliminates the need for a separate boot PROM and enables remote in-system reprogramming over JTAG. EPC devices sit hierarchically between raw configuration PROMs and full embedded controllers in the FPGA configuration ecosystem. Key features of the EPC4Q100T include 4 Mbit of flash storage, 90-ns flash access time (approximately 10 MHz core clock), and a 16-bit data bus (DQ[15:0]) that supports FPP configuration at speeds up to 160 Mbps. The device supports in-system programmability via JTAG (IEEE 1149.1 boundary scan), enabling field firmware updates without removing the FPGA board. Operating voltage is 3.3 V core with 5 V tolerant I/O on legacy interfaces. The EPC4Q100T uses a 90-nm (or equivalent process node) flash cell array paired with an internal controller that handles page-mode reads and JTAG-driven updates. The internal oscillator and state machine generate configuration clock and control signals (nSTATUS, CONF_DONE, nCONFIG) to the FPGA without external glue logic, simplifying board design. Typical applications include Stratix and Cyclone FPGA boot storage, industrial control boards with field-updatable firmware, telecommunications line cards requiring remote bitstream updates, and prototyping platforms where multiple bitstreams must be switched in the lab. The device is widely used in legacy Altera/Intel designs where a drop-in configuration memory is needed. When designing with EPC4Q100T, ensure JTAG chain integrity for in-system programming and observe the configuration mode (PS vs FPP vs AS) pins to match the target FPGA. For new designs, Intel recommends migrating to the newer EPCQ-A or EPCQ-L configuration devices in smaller packages.
EPC4QC1C00N - Enhanced Configuration Device, 3.3V, 100-QFP | Altera
The Altera (Intel) EPC4QC1C00N is a serial configuration device in the Enhanced Configuration Device (EPC) family, designed to configure SRAM-based Look-Up Table (LUT) FPGAs such as the Stratix, Cyclone, and APEX series. It provides 4,194,304 bits (4 Mbit) of one-time-programmable flash memory organized as a single 3.3 V configuration bitstream store, and is offered in a 100-pin QFP package with industrial temperature grading. An Enhanced Configuration Device is a non-volatile flash memory peripheral that holds the FPGA's configuration bitstream and serially shifts it into the FPGA at power-up through the dedicated DATA, DCLK, nCONFIG, nSTATUS, and CONF_DONE pins. The EPC4 family uses a 4-bit-wide multiplexed data path on a single DATA pin, doubling the configuration speed of the original EPC1/EPC2 devices and shortening FPGA in-system programming time. Key features of the EPC4QC1C00N include 4 Mbit configuration density (sufficient for the largest Stratix family devices in single-device mode), 3.3 V core supply with 3.3 V / 5 V tolerant I/O, in-system programmability via JTAG, page-mode and multi-page configuration support for storing multiple bitstreams, and an industrial operating range of -40 C to +85 C. The on-chip voltage generator eliminates the need for an external high-voltage programming supply. Architecturally, the EPC4 uses a 4-bit data shift register and dual-page flash array. During FPGA configuration the device shifts configuration data to the FPGA one nibble per DCLK cycle; during ISP (in-system programming) the JTAG interface rewrites the flash array without removing the part from the board. Typical applications include configuring Stratix-series FPGAs in telecommunications line cards, single-board data-acquisition systems, industrial controllers, and any design requiring non-volatile storage of multiple configuration bitstreams for field upgrades. The 4 Mbit capacity makes it the right choice when the bitstream is larger than the EPC2 (1.6 Mbit) limit. When designing with the EPC4QC1C00N, follow the Altera reference schematic: tie nCONFIG and nSTATUS to the FPGA with 10 kohm pull-ups to VCC, place a 0.1 uF decoupling capacitor adjacent to each VCC pin, and route DCLK as a short impedance-controlled trace to avoid configuration errors at high DCLK rates. This page synthesizes distributor pricing, drop-in same-package alternatives, and application notes that complement the manufacturer datasheet without duplicating it.
EPC4QI100 - 4Mb Enhanced Configuration PROM, 100-PQFP | Intel (Altera)
The Intel (formerly Altera) EPC4QI100 is a 4-Mbit in-system programmable enhanced configuration PROM designed to configure high-density FPGAs including the Stratix, APEX II, APEX 20K, Mercury, ACEX 1K, and FLEX 10K device families. Housed in a 100-pin PQFP package (20 x 14 mm) and operating from a 3.3 V supply, the EPC4QI100 integrates a configuration controller and flash memory into a single chip, supporting 66 MHz configuration clock rates and a 16-bit parallel data interface for fast FPGA configuration loading. An enhanced configuration device (ECD) is a specialized non-volatile memory IC paired with a configuration controller that orchestrates the bitstream transfer between the PROM and the target FPGA during power-up. ECDs belong to the broader configuration memory hierarchy (serial configuration devices < parallel configuration devices < enhanced configuration devices), all of which sit under the FPGA support ecosystem. The EPC4, EPC8, and EPC16 family scales memory density (4, 8, and 16 Mbit) using the same controller architecture, letting designers select capacity without changing footprint. Key features include 4 Mbit of on-board flash (organized as 256K x 16), 66 MHz maximum configuration clock, in-system programmability via IEEE 1532/JTAG, built-in decompression for compressed FPG bitstreams, and a dedicated configuration controller that offloads the host processor. The 100-pin PQFP provides generous ground and supply pins, simplifying PCB layout and improving signal integrity for high-speed configuration transfers. Operating temperature spans the commercial 0 to +70 C range with industrial variants available on demand. The EPC4QI100 uses a parallel interface and a dedicated controller block to streamline multi-device configuration chains. Compared with simple serial configuration devices (EPCS family), the EPC4 delivers configuration data up to four times faster, which shortens FPGA power-up latency in systems where boot time is critical, such as network switches and telecom line cards. Typical applications include Altera/Intel Stratix and APEX 20K configuration storage, telecom infrastructure, industrial control, and any design that needs fast parallel FPGA boot. Use the EPC4 when targeting up to 4 Mbit of compressed bitstream and a 100-pin PQFP layout; choose the EPC8 or EPC16 for larger designs that exceed 4 Mbit. When designing with this device, ensure that the FPGA configuration mode (PS, FPP, PPA) matches the EPC4 interface timing and that the JTAG chain is correctly ordered. Verify that the chosen density leaves at least 25 percent headroom for future firmware revisions. This page synthesizes distributor pricing, drop-in alternatives from the Altera ECD family, and practical configuration-design notes not found in the manufacturer datasheet.
EPC4SI8N-JHG0 - 4Mb Config Device for SRAM FPGAs | Altera
The Altera EPC4SI8N-JHG0 is an enhanced-configuration serial flash device designed to load configuration bitstreams into SRAM-based Altera/Intel FPGAs such as Stratix, Cyclone, APEX II, APEX 20K, Mercury, ACEX 1K, and FLEX 10K series. Packaged in an 8-pin SOIC (SI8) with J-lead-style option code and a -JHG0 ordering suffix marking, the part provides non-volatile storage and supports single-device configuration for high-density FPGAs via a four-pin serial interface. Configuration devices are non-volatile memories dedicated to storing FPGA bitstreams. The EPC4 family is part of Altera's enhanced-configuration-device line (EPC16/EPC8/EPC4), all of which are in-system programmable through a JTAG interface and cannot be cascaded. Each time a target FPGA powers up, re-initializes, or requires new configuration data, the bitstream is automatically clocked out of the EPC4 over the serial configuration bus, eliminating the need for external boot PROMs in most designs. Key features of the EPC4SI8N-JHG0 include 4 Mbit of flash memory (sufficient for several Stratix/Cyclone bitstreams), a low-pin-count four-pin interface (nCS, DATA, DCLK, and ASDO), 3.3V core operation, and low standby current. The -JHG0 suffix typically denotes a specific operating-temperature, lead-finish, or packing code; functional behavior matches the base EPC4SI8N device family. The EPC4SI8N-JHG0 is typically used as a stand-alone configuration memory for a single FPGA. Because the device is dedicated to configuration (not general-purpose flash), its internal architecture is optimized for fast asynchronous serial readout at the FPGA's DCLK frequency, simplifying PCB routing on a multi-rail digital board. Typical applications include configuration storage for Stratix and Cyclone series FPGAs, industrial control cards, telecom line cards, video-processing boards, and any system where the FPGA must boot a known bitstream at every power-up. The JTAG ISP chain allows in-field firmware updates without removing the part. When designing with the EPC4SI8N-JHG0, observe the 3.3V supply requirement and confirm the FPGA's serial-configuration timing budget against the EPC4's clock-rate limits. Decoupling the VCC pin with a 0.1uF capacitor placed within 5 mm of the package is recommended to keep the configuration clock rail clean. This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with the trade-off analysis needed to select or substitute this Altera/Intel configuration device.
EPC80C100 - 80-Mbit Config Memory for SRAM-Based LUTs | Intel FPGA
The Intel (formerly Altera) EPC80C100 is an 80-megabit enhanced configuration memory device designed to store and stream configuration bitstreams to SRAM-based look-up-table (LUT) FPGAs in the Altera Cyclone, Stratix, APEX, and ACEX families. The part is housed in a 100-pin Plastic Quad Flat Pack (PQFP/EQFP) package and supports serial (PS) and parallel configuration interfaces used in classic Altera FPGA boot chains. A configuration device is a non-volatile serial/parallel memory that holds the FPGA's bitstream and loads it at power-up through the FPGA's dedicated configuration pins (nCONFIG, DCLK, DATA, nSTATUS, CONF_DONE). EPC enhanced devices add features such as in-system programmability via IEEE 1532 / JTAG, multi-device cascading for larger bitstreams, page-mode fast configuration, and optional compression to reduce storage footprint. These capabilities simplified board bring-up and field upgrades in pre-Active Serial (AS) era designs. Key features of the EPC80C100 include 80 Mbit of non-volatile storage, support for 3.3 V core and 1.8 V/3.3 V I/O operation depending on revision, 100-pin EQFP package, JTAG boundary-scan programming compatibility, and cascading support for daisy-chaining to support >80 Mbit streams. The device pairs with the Altera MAX series CPLDs and early SRAM FPGAs (Cyclone, Cyclone II, Stratix, Stratix GX, APEX 20K, ACEX 1K) where JTAG-based or passive serial configuration is required. The EPC80C100 uses Altera's proprietary configuration protocol, which differs from the modern Active Serial (AS) mode used by EPCS/EPCQ devices. Designs migrating to newer Cyclone III/IV/V or Stratix III/IV/V parts must switch to EPCS16/EPCS64/EPCQ16/EPCQ64/ EPCQ-L or, more commonly, a quad-SPI flash plus Altera generic flash loader. Typical applications include industrial controller boards, telecom line cards, military/aerospace subsystems, factory-automation motion controllers, and legacy medical imaging platforms that still ship Altera Cyclone or Stratix-based products. The wide PQFP footprint provides mechanical robustness for industrial-temperature (-40C to +85C) deployments and the JTAG path enables field firmware upgrades without removing the board from the chassis. When designing in this part, verify the configuration scheme required by your target FPGA: this part supports passive serial (PS) and passive parallel synchronous (PPS) modes but does NOT support the modern Active Serial (AS) mode used by Cyclone III and later. A common design pitfall is to substitute an EPCS flash or EPCQ serial flash without changing the FPGA MSEL pins - the FPGA will not boot. This page synthesizes distributor stock checks, parametric position within the EPC family, drop-in and migration alternatives, and practical board-bring-up notes that are not consolidated in any single manufacturer or distributor page.
EPC80C100T - Altera Enhanced Configuration Device, 100 MHz | Intel
The Intel (formerly Altera) EPC80C100T is an Enhanced Configuration Device designed to configure SRAM-based look-up table (LUT) FPGAs such as the APEX 20K, APEX II, Mercury, ACEX 1K, Cyclone, and Stratix device families. Packaged in a 100-pin PQFP (T suffix indicates tape-and-reel), it provides non-volatile 3.3V flash storage of up to 8 Mb of configuration bitstream, enabling single-chip FPGA configuration at power-up. An Enhanced Configuration Device is a specialized flash memory with a dedicated FPGA configuration interface. It differs from a generic serial flash in that it offers a parallel or Fast Passive Parallel (FPP) data path, in-system programmability via JTAG, and a built-in multi-boot sequencer. Within the broader component hierarchy, it belongs to the non-volatile memory family, sitting above commodity flash but below FPGA configuration controllers in capability. Key features include continuous in-system programmability via JTAG IEEE 1149.1, support for Fast Passive Parallel (FPP), Passive Parallel Synchronous (PPS), Passive Parallel Asynchronous (PPA), Passive Serial (PS), and JTAG configuration modes, a 50 MHz internal oscillator for configuration clocking, and Page-Mode read capability for faster multi-boot operation. The T-suffix device is supplied in tape-and-reel packaging. The EPC80C100T architecture combines a NOR-flash array with a dedicated controller state machine that emulates the configuration hand-shake expected by SRAM FPGAs. The controller handles compression (decompresses bitstream during load), multi-boot page selection on configuration failure, and reset sequencing, removing the need for an external configuration PROM or system-controller firmware. Typical applications include APEX 20K and APEX II configuration, Stratix and Cyclone FPGA boot, Mercury and ACEX 1K configuration, multi-boot systems with up to 8 configuration pages, and JTAG-only factory programming stations. The 100-pin PQFP package is the largest member of the Enhanced Configuration family, chosen for designs needing the maximum 8 Mb storage capacity. Design considerations include the 3.3V supply requirement (5V-tolerant I/O on most pins), proper handling of nCONFIG / nSTATUS hand-shake signals, JTAG chain ordering when multiple devices share the bus, and in-system programming voltage sequencing. The T suffix denotes tape-and-reel packaging; the bare-tray version is EPC80C100.
EPC81500RC304-3 - Enhanced Configuration Device for SRAM FPGAs | Altera
The Altera EPC81500RC304-3 is an Enhanced Configuration Device designed to configure SRAM-based look-up-table (LUT) FPGAs such as Altera FLEX and ACEX families. Housed in a 304-pin Plastic Quad Flat Pack (PQFP/RQ304) package, this configuration memory stores the FPGA configuration bitstream in non-volatile flash and delivers it serially or in parallel to the target FPGA at system power-up or reconfiguration. What is an Enhanced Configuration Device? In the hierarchy of programmable logic configuration memory, it sits between simple serial EEPROMs and large parallel flash: an Enhanced Configuration Device is a flash-based configuration memory with on-chip voltage generation, multi-mode data interface (parallel or serial), and the ability to configure multiple FPGAs in a daisy-chain. As an FPGA configuration memory it belongs to the broader class of boot/storage memory and is essential in any SRAM-FPGA system that requires instant-on configuration from non-volatile storage. Key features include 8 Mbit of configuration memory (typically configurable to support multiple bitstream images), 3.3V or 5V tolerant I/O, support for FLEX 8000 / FLEX 10K / ACEX 1K / APEX family targets, and an industry-standard JTAG (IEEE 1149.1) interface for in-system programming. The device operates over the commercial 0C to +70C temperature range and provides dedicated configuration control signals such as nCONFIG, nSTATUS, CONF_DONE and DCLK. The EPC81500RC304-3 uses a 5.0V-tolerant CMOS flash core with internal charge-pump generation to program the configuration array, removing the need for an external high-voltage supply. Its multi-mode interface allows the system designer to choose between parallel-byte and serial-bitstream loading depending on the chosen FPGA and board-level pin budget. Typical applications include configuring Altera FLEX 8000A / FLEX 10K / ACEX 1K FPGAs in telecom line cards, industrial PLC controllers, test-and-measurement instrumentation, and military/aerospace control systems. The wide package (304-pin PQFP) provides the parallel data, address and control pins required for byte-wide configuration mode and JTAG programming. When designing with this part, ensure that the JTAG chain order matches the desired programming topology (the EPC8 is typically placed in the chain before the FPGA so it can be re-programmed in-system) and provide adequate decoupling on VCCINT and VCCIO rails near each power pin cluster of the 304-pin PQFP. Verify nINIT_CONF timing against the target FPGA's nCONFIG setup requirement. This page synthesizes distributor pricing, parametric data from the Altera datasheet, and practical design notes not collected in a single place elsewhere.
EPC8820ARC208-3 - Altera Enhanced Config Device | 208-FQFP
The Altera EPC8820ARC208-3 is an Enhanced Configuration Device from the Altera/Intel EPC family, supplied in a 208-pin FQFP (Plastic Quad Flat Pack) package with exposed pad. It is designed to configure SRAM-based Look-Up Table (LUT) devices such as the FLEX 8000 and APEX series, providing non-volatile serial configuration storage for FPGA bitstreams. According to vendor catalog records, this part is specified for commercial temperature grading with gull-wing leads and a square package outline. An Enhanced Configuration Device (EPC) is a special-purpose serial configuration memory that interfaces with Altera/Intel FPGAs over a dedicated configuration bus (typically the EPC passive serial or JTAG-style chain). Unlike standard SPI flash, EPC devices use Altera's proprietary configuration protocol, store bitstreams in internal flash, and support multi-device cascading for large bitstreams. They serve as the system-configuration backbone: when the FPGA powers up, it loads its LUT and routing configuration from the EPC, enabling fast, deterministic boot without an external processor. Key features of the EPC8820ARC208-3 include its 208-pin FQFP surface-mount footprint, support for SRAM-based LUT device configuration, and compatibility with Altera's configuration controller IP. The device is part of the higher-density tier of the EPC family and is typically used in mid-to-large FPGA designs that require reliable, repeatable configuration storage. Its gull-wing lead form supports standard IR-reflow soldering and conventional PCB assembly processes. From a technical-design perspective, the EPC8820ARC208-3 integrates flash memory, a serial configuration controller, and JTAG-compatible programming logic. Designers connect it to the FPGA via the dedicated configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0). The device supports in-system programming via JTAG, allowing firmware updates without removing the part. Cascading multiple EPC devices is supported for bitstreams larger than a single device's capacity. Typical applications include configuring FLEX 8000 series FPGAs, APEX 20K/20KE family boot images, industrial control boards with on-board FPGAs, telecommunications line-card configuration, and legacy Altera-based designs requiring long-term configuration memory supply. Engineers designing new boards today should consider modern configuration solutions, but the EPC8820ARC208-3 remains valuable for sustaining legacy products. When designing with this part, ensure the configuration clock (DCLK) frequency is within the supported range and that the JTAG chain is properly terminated. Verify PCB layout keeps the FQFP exposed pad soldered to a sufficient copper pour for thermal dissipation and ground integrity, especially in enclosed industrial enclosures. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated in any single manufacturer datasheet, providing XAIPART customers with an at-a-glance sourcing and engineering reference.