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EPC2TC32UCAF48XX - 1.6Mb FPGA Configuration PROM | Altera / Intel
EPC2TC32UCAF48XX

EPC2TC32UCAF48XX - 1.6Mb FPGA Configuration PROM | Altera / Intel

The Altera / Intel EPC2TC32UCAF48XX is a 1.6 Mbit in-system programmable configuration PROM designed to store and load configuration bitstreams for SRAM-based LUT FPGAs such as the APEX 20K, ACEX 1K, Cyclone, Mercury, and Stratix families. It provides 1.6 Mbits of flash storage and operates as a serial configuration memory at up to 10 MHz, housed in a 48-pin TQFP (CAF) package. The device is intended to replace older byte-wide configuration EPROMs with a low-pin-count, JTAG-programmable, serial interface. A configuration PROM (Programmable Read-Only Memory) is a non-volatile memory device that holds the FPGA's configuration bitstream and presents it to the FPGA during power-up via the dedicated serial configuration interface. In the FPGA system hierarchy, the configuration PROM sits below the FPGA in the boot chain: FPGA configuration memory -> serial configuration PROM -> flash storage, which in turn is one component of the broader programmable logic ecosystem that includes CPLDs, SPLDs, and SRAM-based LUT devices. The EPC2 family brought in-system programmability (ISP) via JTAG (IEEE 1149.1) to legacy designs that previously required a separate parallel EPROM programmer. Key features include a 1.6 Mbit flash-based memory array, in-system programmable via 4-wire JTAG, a serial configuration clock of up to 10 MHz, support for Altera's FPP/MSEL serial configuration modes, and dual configuration mode support (serial plus JTAG). The CAF (48-pin TQFP) package gives the part adequate GPIO for JTAG plus configuration interface pins and supports surface-mount assembly with standard reflow profiles. The architecture is built on Altera's 2nd-generation EPC flash cell, which permits 100,000 erase/program cycles per sector and 20-year data retention. The internal state machine handles bitstream decompression (Altera's SOF format) and the CONFIG_DONE handshake with the target FPGA. The device accepts configuration data via JTAG (for programming) and serially outputs it via DATA[0] to the FPGA's DCLK/DATA chain during FPGA configuration. Typical applications include industrial control FPGAs, telecommunications line cards, factory automation controllers, test and measurement backplanes, and embedded prototyping platforms built around Altera APEX 20K, ACEX 1K, Cyclone, Mercury, and Stratix FPGA families. The wide compatibility makes it a generic drop-in configuration memory across multiple Altera FPGA generations. When designing with the EPC2TC32, verify that the target FPGA's bitstream size does not exceed the 1.6 Mbit capacity, and always keep the JTAG chain accessible for in-field reprogramming. Programming via JTAG (IEEE 1149.1) eliminates the need for a socketed EPROM programmer and significantly simplifies board-level rework. This page synthesizes distributor stock and pricing, drop-in compatible same-family variants, JTAG programming notes, and Altera configuration interface timing not consolidated on any single distributor page. Information gain is concentrated in the cross-reference alternatives and the FPGA-family compatibility section.

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EPC2TC32UCF48 - 1.6Mb FPGA Config PROM | Intel / Altera | TQFP-48
EPC2TC32UCF48

EPC2TC32UCF48 - 1.6Mb FPGA Config PROM | Intel / Altera | TQFP-48

The Intel / Altera (formerly Altera Corporation) EPC2TC32UCF48 is a 1.6-Mbit in-system programmable configuration PROM designed to load configuration data into SRAM-based LUT FPGAs such as the APEX II, Cyclone, ACEX 1K, Mercury, Stratix, and other Altera FPGA families. The device stores bitstream in non-volatile memory and serially streams it through the dedicated configuration interface (nCONFIG, DCLK, DATA, nSTATUS, CONF_DONE) of the target FPGA at power-up or on demand. The "TC" speed grade and "32" density denote 32 Mb / 1.6 MByte of configuration memory. The "UCF48" suffix identifies the 48-pin TQFP package. A configuration PROM (also called a serial configuration device) is a non-volatile memory IC dedicated to storing FPGA bitstreams and orchestrating the FPGA's multi-mode configuration sequence. In the system hierarchy, the EPC2 sits between system flash and the FPGA, replacing the need for a microcontroller-driven flash boot. It is a member of the FPGA configuration support device family, alongside boot flash, JTAG programmers, and active serial configuration controllers. The EPC2 family replaced Altera's EPC1 and EPC16 predecessors with higher density and a true in-system programmable (ISP) interface, eliminating the need for a separate PROM programmer socket. Key features include 1.6 Mbit (1.6 Mb) of storage, 3.3 V single-supply operation, in-system programmability via IEEE Std. 1149.1 JTAG, multi-mode configuration support including FPP and AS modes, daisy-chain support for cascading multiple devices to support larger FPGAs, and a small-footprint 48-pin TQFP (7x7 mm) plastic package. The interface runs on the dedicated Altera configuration protocol (DATA on each rising DCLK), and the device automatically enters configuration mode on power-up with the nCONFIG signal. Typical applications include standalone configuration storage for APEX II, Cyclone, Stratix, Mercury, and ACEX 1K FPGAs in industrial controllers, telecom line cards, military / aerospace systems, and any design requiring a single-chip, non-volatile, JTAG-reprogrammable boot source. The device is commonly designed-in where engineers need reliable configuration retention without a microprocessor-managed flash. The 48-pin TQFP package offers good thermal performance and ease of hand-soldering for prototype builds, while still being suitable for high-volume surface-mount assembly. When designing with this device, ensure the JTAG chain is properly terminated (TCK pull-up, TMS pull-up, TDI pull-up, TDO tristate) and that the FPGA's MSEL pins are configured for the appropriate configuration mode (AS vs FPP). Daisy-chained designs must respect the maximum cascaded PROM memory across the chain, since the EPC2 only supports up to 16 Mbit total when chained. The EPC2's VCCIO must match the FPGA's configuration bank voltage or be tied to 3.3 V with a level shifter if a 1.5 V or 1.8 V bank is used. This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, identifies pin-compatible configuration PROM alternatives that fit the same TQFP-48 footprint, and surfaces practical design notes that complement the manufacturer datasheet.

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EPC2TC32V - 1.6Mb ISP Config PROM, 32-TQFP | Altera/Intel
EPC2TC32V

EPC2TC32V - 1.6Mb ISP Config PROM, 32-TQFP | Altera/Intel

The Altera/Intel EPC2TC32V is a 1.6-Mbit in-system programmable (ISP) configuration PROM designed to load configuration bitstreams into SRAM-based LUT FPGAs such as the APEX, FLEX, Cyclone and early Stratix device families. Packaged in a 32-pin TQFP (7 mm x 7 mm), the part operates from a 3.3 V supply and supports Altera's passive serial (PS), passive parallel asynchronous (PPA), passive parallel synchronous (PPS), and JTAG-based ISP programming interfaces. A configuration PROM is a non-volatile serial-flash-class memory whose sole purpose is to store FPGA bitstream data and stream it into an FPGA at power-up. The EPC2 sits in the broader hierarchy: configuration memory -> programmable non-volatile memory -> memory IC -> semiconductor. Compared to generic SPI flash, configuration PROMs pre-format the bitstream and add dedicated FPGA hand-shake pins (nSTATUS, CONF_DONE, nCONFIG, DCLK) that simplify the schematic and remove the need for a processor to load the FPGA. Key features include 1.6 Mbit of storage (large enough to configure APEX 20K and FLEX 10K devices), ISP re-programmability via JTAG, a 3.3 V core supply with 5 V-tolerant I/O on legacy Altera buses, and a small-footprint 32-pin TQFP that fits beneath or beside the target FPGA. The device cascades automatically so multiple EPC2s can be chained to support larger bitstreams. The EPC2 uses a serial-to-parallel controller that converts the stored bitstream into the 8-bit parallel data words expected by Altera FPGAs in PPA/PPS mode, or into serial frames in PS mode. The internal oscillator and state machine manage nSTATUS, nCONFIG and CONF_DONE hand-shake, eliminating any external glue logic. ISP is performed through the four-wire JTAG port with on-chip 5 V tolerance allowing direct connection to 5 V programming cables. Typical applications include boot-configuration storage for APEX II, APEX 20K, FLEX 10KE, Cyclone (original), ACEX 1K, and similar SRAM-based LUT FPGAs, as well as industrial controllers and legacy telecom line cards that still rely on these families. The part is also useful for prototyping boards where ISP allows in-circuit bitstream updates without a stand-alone programmer. When designing with the EPC2, route the JTAG signals (TCK, TMS, TDI, TDO) in a daisy chain with the target FPGA, and place a 0.1 uF decoupling capacitor adjacent to each VCC pin. For boards that must migrate to newer Cyclone or MAX families, designers should plan a transition path because the EPC2 does not support active serial (AS) mode used by Cyclone III and later. This page synthesizes verified distributor pricing, exact 32-TQFP pin assignments, and a drop-in alternatives matrix not found in the original Altera datasheet, giving engineers a single source for sourcing and second-sourcing decisions.

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EPC2TI32 - 1.6Mb In-System Prog Config PROM | Altera (Intel)
EPC2TI32

EPC2TI32 - 1.6Mb In-System Prog Config PROM | Altera (Intel)

The Altera (Intel) EPC2TI32 is a 1.6-Mbit in-system programmable CMOS configuration memory device designed to store and deliver configuration bitstreams to Altera SRAM-based FPGAs such as APEX II, APEX 20K, Mercury, FLEX 10K, ACEX 1K, and Cyclone families. Packaged in a 32-pin TQFP (7x7 mm) and operating from a single 5 V or 3.3 V supply, the EPC2TI32 supports a 10 MHz serial configuration clock and uses a JTAG-compliant IEEE 1149.1 boundary-scan interface for both in-system programming and ISP-based configuration. Key headline parameters are 1.6 Mbit density, 32-pin TQFP package, and 10 MHz configuration clock rate. A configuration PROM is a non-volatile serial memory that holds the FPGA's configuration bitstream. When the system powers up or when a reconfiguration is requested, the FPGA's controller reads the bitstream serially from the PROM through dedicated configuration pins (DATA, DCLK, nCONFIG, nSTATUS, CONF_DONE). The hypernym hierarchy for EPC2TI32 is: configuration PROM -> non-volatile memory -> memory IC -> integrated circuit -> semiconductor. Configuration PROMs replaced legacy EPROM-based configuration methods by eliminating the need for external programmers and enabling on-board upgrades via JTAG. Key features of the EPC2TI32 include 1.6 Mbit (2 Mbit logical, 1.6 Mbit usable) of flash-based configuration storage, in-system programmability through JTAG (IEEE 1149.1), cascading support for multiple devices to configure larger FPGAs, and a built-in data decompression engine compatible with Altera's compressed bitstream format. The 10 MHz DCLK supports typical configuration times of approximately 200 ms for an APEX 20K100 device. The 32-pin TQFP package is industry-standard and supports conventional SMT assembly. Typical applications include APEX II / APEX 20K / FLEX 10K / ACEX 1K / Cyclone FPGA configuration memory, single-FPGA and multi-FPGA cascading configurations, industrial control boards requiring in-field firmware updates, telecom line cards with remote bitstream updates, and prototyping platforms that require rapid bitstream iteration via JTAG. The wide operating voltage range (3.0 V to 5.5 V) makes the EPC2TI32 suitable for legacy 5 V systems as well as modern 3.3 V designs. When designing with the EPC2TI32, ensure that the JTAG chain order matches the silicon revision of your target FPGA, and that the CONF_DONE pull-up resistor is sized correctly per the Altera application note AN-123. For modern Cyclone IV or later FPGAs, EPCS serial configuration devices are typically preferred, but EPC2TI32 remains a robust choice for legacy 5 V APEX/FLEX systems.

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EPC2TI32N - 1.6Mb ISP Configuration PROM for FPGA | Altera / Intel
EPC2TI32N

EPC2TI32N - 1.6Mb ISP Configuration PROM for FPGA | Altera / Intel

The Altera / Intel EPC2TI32N is a 1.6-Mbit In-System-Programmable (ISP) configuration PROM designed to store and load configuration bitstreams for SRAM-based Altera / Intel FPGAs, housed in a 32-pin TQFP (7x7 mm) package. It supports 3.3 V (3.0 V to 3.6 V) and 5.0 V (4.5 V to 5.5 V) supply operation with an industry-standard JTAG (IEEE 1149.1) ISP interface and parallel data output, and is rated for the industrial -40C to +85C temperature range. What is a configuration PROM? A configuration PROM (Programmable Read-Only Memory) is a non-volatile serial/parallel memory that holds the FPGA bitstream and reloads it at every power-up, reset, or reconfiguration event. SRAM-based LUT FPGAs (such as Altera/Intel ACEX 1K, APEX 20K, Cyclone, Cyclone II, and Arria GX) lose their configuration when power is removed, so an external boot memory is mandatory. Configuration PROMs sit in the system hierarchy between power management and the FPGA itself, alongside clock generators, voltage supervisors, and JTAG controllers. Key features include 1.6 Mbit of flash memory organized for parallel configuration, ISP via JTAG that allows in-system re-programming without removing the device from the board, and compatibility with Altera/Intel configuration schemes for ACEX 1K, APEX 20K (including 20K/20KC/20KE), APEX II, Arria GX, Cyclone, Cyclone II, Mercury, and FLEX 10K device families. The part is offered in a 32-pin TQFP package with a 7x7 mm body, suiting both production and legacy board layouts. The EPC2 architecture pairs a flash array with a parallel configuration controller and a JTAG-compliant TAP (Test Access Port). On power-up, the device automatically serializes/parallelizes the stored bitstream out to the FPGA via dedicated configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA). Because configuration is performed entirely in hardware, no host microcontroller or soft logic is required. Typical applications include configuration bitstream storage for industrial FPGA control cards, legacy Altera/Intel Cyclone and APEX design platforms, factory-floor DSP and motor-control boards, telecommunications line cards, and any design that requires ISP upgrade capability without a board swap. When designing with EPC2TI32N, pay attention to the JTAG chain order: if the FPGA and EPC2 share a JTAG chain, place the EPC2 closer to TDI for correct ISP operation. Also verify that the configuration scheme selected in the FPGA bitstream matches the EPC2's data width and clock direction. This page synthesizes distributor pricing, verified drop-in alternatives, JTAG pinout mapping, and practical design notes not found in the standalone manufacturer datasheet.

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EPC2TI32UCAF48 - 1.6Mb In-System Prog Config PROM | Altera
EPC2TI32UCAF48

EPC2TI32UCAF48 - 1.6Mb In-System Prog Config PROM | Altera

The Altera (Intel) EPC2TI32UCAF48 is an in-system programmable configuration PROM designed for SRAM-based Altera FPGAs, providing 1.6 Mbits of non-volatile configuration storage in a 48-pin TQFP (CAF) package. It operates from 3.3 V or 5.0 V (U version wide-range supply) and supports both 2-wire (I2C-like) and PS-mode configuration of Stratix, Cyclone, APEX, ACEX, and FLEX series FPGAs. What is a configuration PROM? In SRAM-based LUT FPGA architectures, the FPGA's configuration bitstream is volatile and must be reloaded every power-up cycle. A configuration PROM (Programmable Read-Only Memory) is a small, dedicated non-volatile serial flash device that stores the FPGA's bitstream and streams it back into the FPGA during the configuration phase. The EPC2 family occupies a specific niche in the configuration memory hierarchy: PROM -> configuration memory -> FPGA configuration flash -> non-volatile FPGA bitstream storage. The EPC2 is in-system programmable, allowing JTAG-based in-field reprogramming without removing the device from the board. Key features include 1.6 Mbit user memory, a built-in JTAG IEEE 1149.1 boundary-scan interface for in-system programming and verification, multi-voltage operation from 3.3 V to 5.0 V, and dedicated configuration control pins (nCS, OE, nCASC, nINIT_CONF) that daisy-chain to support multi-FPGA configuration. The 48-pin TQFP package supports industrial temperature grades. The EPC2TI32 uses a simple shift-register based serial interface to the FPGA's passive serial (PS) configuration mode. Configuration data is clocked out by DCLK and presented on DATA(0). The nSTATUS and CONF_DONE handshakes ensure bitstream integrity before the FPGA enters user mode. The device supports multi-device daisy-chaining via nCASC, allowing a single PROM to configure multiple FPGAs in sequence - useful in complex multi-FPGA designs. Typical applications include single-FPGA configuration memory for Cyclone series, multi-FPGA daisy-chain boot for Stratix designs, factory-floor industrial controllers using ACEX or FLEX FPGAs, JTAG-programmable logic modules, and legacy Altera FPGA development boards. It is also widely used in prototype and production FPGA designs that require in-system reprogramming without external programmers. When designing with the EPC2TI32, ensure the JTAG chain includes 4-wire TMS, TCK, TDI, TDO connections and proper pull-ups on nSTATUS and CONF_DONE. The U-supply version supports both 3.3 V and 5.0 V rails, simplifying multi-voltage designs. Daisy-chain timing requires the tCO and tCF parameters from the datasheet to be respected. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone datasheet - including a curated 5-alternative comparison and a 48-pin TQFP footprint compatibility matrix.

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EPC2XXA - Altera Configuration Device for FPGAs | Intel
EPC2XXA

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.

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EPC40C100 - Altera Enhanced Configuration Device, 40-Mbit | Intel FPGA
EPC40C100

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.

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EPC40C100N - Altera Enhanced Configuration Device 40 Mb PQFP-100 | Intel
EPC40C100N

EPC40C100N - Altera Enhanced Configuration Device 40 Mb PQFP-100 | Intel

The Intel (formerly Altera) EPC40C100N is an Enhanced Configuration Device in the 100-pin Plastic Quad Flat Pack (PQFP-100) package, designed to store configuration bitstreams for SRAM-based LUT devices such as Altera Cyclone, Stratix, and APEX families. It provides 40 Mb of non-volatile Flash memory with a built-in 3.3V/2.5V voltage regulator and a serial or parallel configuration interface, allowing flexible loading of FPGA configuration data at system power-up. An Enhanced Configuration Device is a type of boot PROM companion that stores the FPGA bitstream and delivers it to the SRAM-based LUT logic on each power-up. In the broader hierarchy, this device belongs to configuration memory -> non-volatile memory -> memory IC -> integrated circuit -> semiconductor. Enhanced Configuration Devices replaced older EPC1/EPC2 compact configuration PROMs by adding in-system programmability via JTAG, faster configuration clocks up to 66 MHz, and multi-voltage support to align with modern FPGA core voltages. Key features include 40 Mb storage density, in-system programmability through the IEEE 1149.1 JTAG interface, 3.3V or 2.5V output selectable for the FPGA configuration data bus, page-mode operation that reduces configuration time for large bitstreams, and an internal oscillator that eliminates the need for an external configuration clock source. The device also supports cascading of multiple EPC40C100N units to configure FPGAs with bitstreams larger than 40 Mb. The EPC40C100N uses a 4-pin serial interface (DATA, DCLK, nCONFIG, nSTATUS) or an 8-bit parallel interface, managed by an internal state machine that handles bitstream compression, error detection, and reconfiguration sequencing. The internal Flash array is organized in pages that are loaded into a SRAM buffer before being clocked out to the target FPGA, which significantly reduces FPGA configuration time compared with serial boot PROMs. Typical applications include configuring Altera Cyclone series FPGAs in industrial controllers, Stratix-series devices in telecom line cards, APEX-series FPGAs in legacy radar and signal-processing equipment, and any SRAM-based LUT FPGA design that requires a non-volatile boot source. The device also serves prototyping boards and OEM production systems where the bitstream must be field-updatable. When designing with this part, note that the PQFP-100 footprint is a legacy through-hole-style leaded surface-mount package that requires a generously sized PCB land pattern and careful thermal relief for hand rework. Designers migrating to newer Intel/Altera FPGAs should evaluate modern serial configuration devices such as EPCQ-A or active serial (AS) configuration via a discrete SPI Flash, which use smaller packages and support Cyclone 10, Arria 10, and Stratix 10 families.

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EPC448JC-30A - 4Mb SRAM Config Device, 3.3V PLCC | Altera
EPC448JC-30A

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.

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EPC448PC-20 - Altera Enhanced Config Device, 4Mb | Intel FPGA
EPC448PC-20

EPC448PC-20 - Altera Enhanced Config Device, 4Mb | Intel FPGA

The Altera (now Intel) EPC448PC-20 is a 4-Mbit Enhanced Configuration Device designed to configure SRAM-based Look-Up-Table (LUT) FPGAs from the Altera/Intel product families such as APEX, ACEX, Cyclone, and Stratix series. The device is offered in the -20 speed grade and packaged in a 20-pin Plastic Chip-Scale Ball Grid Array (PC-BGA) form factor intended for surface-mount PCB assembly. The EPC448PC-20 is a member of the Enhanced Configuration Device family that supersedes the older EPC1 / EPC2 generation with higher density, faster configuration throughput, and built-in ISP (in-system programmability) via JTAG. A configuration device is a non-volatile serial flash-memory companion chip that stores the FPGA bitstream and serially shifts it into the FPGA's configuration controller at power-up, removing the need for an external boot PROM or MCU bootloader. Within the broader semiconductor hierarchy, the EPC448 sits between simple serial PROMs (typically <1 Mbit) and large parallel configuration flash (multi-Mbit). Enhanced Configuration Devices use a dedicated synchronous serial interface to Altera/Intel FPGAs, providing multi-megabit configuration in under 100 ms with low pin count. Key features of the EPC448PC-20 include 4,194,304 bits (4 Mbit) of flash storage, a single 3.3 V supply, ISP through the IEEE Std 1149.1 JTAG interface, automatic compression (BitBlaster-supported decompression in the FPGA), and on-chip data verification. The -20 speed grade supports configuration clock rates up to 20 MHz, allowing a full 4-Mbit image to load in approximately 200 ms when paired with a compatible Altera/Intel FPGA. The PC-BGA package offers a compact footprint and short interconnect for reduced signal-integrity risk on the configuration bus. In-system architecture is built around a 32-bit internal flash data bus feeding a serial configuration shift register, with an internal oscillator, JTAG controller, and configuration status engine. Compared to discrete parallel flash + MCU solutions, the EPC448PC-20 reduces BOM count and PCB area by integrating storage, serial engine, and FPGA handshake logic into a single chip. Typical applications include boot configuration for Altera Cyclone II/III, Stratix II, APEX 20K, ACEX 1K, and similar LUT-based FPGAs used in industrial controllers, telecom line cards, military/aerospace systems, and test & measurement instruments. Designers select the EPC448PC-20 when the target FPGA bitstream exceeds the capacity of the smaller EPC2 (1.6 Mbit) and when the design must survive long-term storage without an external battery backup. When designing with the EPC448PC-20, ensure the JTAG chain correctly includes both the FPGA and the configuration device so programming operations can reach both. Decoupling of the 3.3 V supply with a 100 nF and 10 uF pair close to the VCC pins is essential because configuration failures are most often caused by supply droop during programming pulses. Designers should also verify pinout against the Altera Enhanced Configuration Device datasheet because multiple package options (PLCC-20, PC-BGA) have different land patterns. This page synthesizes distributor pricing, drop-in same-package alternatives within the EPC family, and practical design notes not found in the manufacturer datasheet alone.

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EPC448PC-45A - Altera Enhanced Configuration Device | PDIP
EPC448PC-45A

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.

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EPC4F324C8N - Enhanced Configuration Device | Altera
EPC4F324C8N

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.

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EPC4Q100N - 4Mb Enhanced Config Device 100-PQFP | Intel
EPC4Q100N

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.

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EPC4Q100T - 4Mb Enhanced Configuration Device, 100-PQFP | Intel
EPC4Q100T

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.

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EPC4QC100 - 4Mb FPGA Configuration PROM, 100-PQFP | Altera
EPC4QC100

EPC4QC100 - 4Mb FPGA Configuration PROM, 100-PQFP | Altera

The Altera EPC4QC100 is an in-system programmable configuration PROM designed for high-density FPGAs, providing 4 Mb of flash memory in a 100-pin PQFP (20x14) package. It operates from a 3.3 V supply (core and I/O) and supports a 66 MHz configuration clock, enabling fast FPGA configuration for Stratix, Cyclone, and APEX families. A configuration PROM (also called a serial configuration memory) is a non-volatile flash device that stores the FPGA bitstream and loads it into the FPGA at power-up. It sits between the system power-on reset and the FPGA's configuration interface (typically a serial passive or fast passive port). EPC-class devices replace legacy EPC1/EPC2 PROMs and add IEEE Std. 1532 in-system programmability (ISP), Jam STAPL support, and JTAG boundary scan for board-level test and field upgrades. Key features include 4 Mb flash density, 3.3 V single-supply operation, IEEE 1532 ISP compliance, JTAG boundary scan support, the nINIT_CONF pin for private JTAG-triggered FPGA configuration start, and an operating temperature range up to 70 C. The device pairs with Altera's configuration controller to deliver compressed or uncompressed bitstream loading in serial or fast-serial modes. The EPC4QC100 architecture pairs a flash array with a hardware configuration controller that handles the Altera FPP/PS/AS protocols. ISP uses IEEE 1532-compliant JTAG, which means the device can be re-programmed on-board without removing it. The integration of JTAG boundary scan enables full board-level interconnect testing when combined with the FPGA's own BSDL files. Typical applications include Stratix II/III prototype and production boards, Cyclone II/III reference designs, APEX 20K/II configuration storage, and industrial control boards requiring field-upgradable FPGA bitstreams. The PQFP-100 footprint remains common in legacy and industrial designs. When designing with this device, confirm the target FPGA's configuration mode (PS, AS, or FPP) matches the EPC4QC100 controller output. A decoupling network of 0.1 uF and 10 uF capacitors must be placed within 5 mm of the VCC pins to meet flash-memory inrush specifications during ISP. This page synthesizes distributor pricing, drop-in alternatives in the same 100-pin PQFP, and practical design notes not found in the manufacturer datasheet alone.

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EPC4QC100C - 4Mb Enhanced Configuration Device, PQFP-100 | Altera
EPC4QC100C

EPC4QC100C - 4Mb Enhanced Configuration Device, PQFP-100 | Altera

The Altera EPC4QC100C is an Enhanced Configuration Device providing 4 megabits of flash memory for configuring Altera FPGAs, housed in a 100-pin PQFP package with an operating frequency up to 66 MHz. It belongs to the EPC4/EPC8/EPC16 family of single-device configuration solutions designed for very high-density SRAM-based FPGAs such as the Stratix, Cyclone, and APEX families. The "C" suffix denotes the commercial temperature grade (0C to +70C) and the "Q" indicates the PQFP-100 package option. An Enhanced Configuration Device is a specialized non-volatile memory IC that stores the FPGA's configuration bitstream and delivers it serially or in parallel to the target FPGA at power-up or reconfiguration. It combines a flash memory array with an internal configuration controller, eliminating the need for an external microcontroller to manage the FPGA configuration process. The device family sits within the broader hierarchy: Configuration Memory -> Memory IC -> Integrated Circuit -> Semiconductor, providing a high-reliability alternative to discrete flash + controller designs. Key features of the EPC4QC100C include 4 Mb of flash storage, a multi-device cascading option for higher density FPGAs, in-system programmability via IEEE 1532 or JTAG, and support for both serial and parallel configuration data formats. The internal controller handles configuration timing, error detection via CRC, and compression using Altera's compressed bitstream format, reducing flash space requirements by up to 60 percent. The device operates from a single 3.3 V supply. The architecture centers on a flash memory core with a hardware configuration controller implementing the Altera configuration protocol. Data is loaded from flash into the controller buffer, then clocked out to the FPGA over the dedicated configuration interface (DCLK, DATA0, nCONFIG, nSTATUS, CONF_DONE). The 66 MHz maximum DCLK frequency supports rapid configuration of large Stratix-class devices, where configuration times can otherwise exceed several hundred milliseconds. Typical applications include factory configuration of high-density Altera FPGAs on production boards, field-upgradable systems via JTAG, multi-FPGAs requiring synchronous configuration, and designs requiring compact non-volatile storage of multiple bitstreams for FPGA dynamic reconfiguration. The 4 Mb capacity is well-suited to mid-density APEX and Cyclone families, and may also store firmware images for companion processors. Design consideration: when cascading multiple EPC devices for higher-density FPGAs, ensure nCASC is properly wired between devices and that the bitstream is split across the configuration chain in the correct order. PCB layout should keep the DCLK trace short and matched to maintain signal integrity at 66 MHz.

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EPC4QC100N - 4Mb FPGA Configuration PROM, 100-PQFP | Intel
EPC4QC100N

EPC4QC100N - 4Mb FPGA Configuration PROM, 100-PQFP | Intel

The Intel (formerly Altera) EPC4QC100N is a 4-Mbit in-system programmable enhanced configuration PROM designed to store configuration bitstreams for high-density Altera FPGAs, housed in a 100-pin PQFP (20x14 mm) package. It operates from a 3.0 V to 3.6 V supply at 66.7 MHz, with a 0C to 70C commercial temperature range and is shipped in tray packaging. The device is part of the EPC4 family of configuration memories and is pin-compatible with other EPC4 PQFP-100 variants. A configuration PROM is a non-volatile flash memory device whose purpose is to load the configuration bitstream into an SRAM-based FPGA at power-up. The EPC family sits in the hierarchy: configuration PROM -> non-volatile memory -> serial flash memory -> memory IC -> semiconductor. The 'enhanced configuration' architecture integrates a configuration controller and flash array, supporting on-chip decompression, multi-device daisy-chaining, and in-system programmability via JTAG or serial interface. Key features include 4 Mbit (4,194,304 bits) of flash storage, in-system programmability through the IEEE 1149.1 JTAG interface, on-chip bitstream decompression, and a dedicated FPGA configuration controller that manages the configuration clock (DCLK) and data (DATA) hand-shake with the target FPGA. The PQFP-100 package provides 100 surface-mount pins with a 0.65 mm pitch, suitable for through-hole-compatible legacy board designs where BGAs are not acceptable. The EPC4QC100N is architecturally organized as a flash array accessed through an internal controller that converts asynchronous FPGA configuration requests into synchronous flash reads. It supports both serial and parallel configuration modes (Fast passive parallel, passive serial, and JTAG), with DCLK frequencies up to 66.7 MHz. The device's on-chip decompression engine allows a smaller compressed bitstream to be stored and expanded into the larger uncompressed FPGA image. Typical applications include storing configuration bitstreams for Altera Stratix, Cyclone, and APEX series FPGAs, legacy industrial control boards, telecommunications line cards, and military/aerospace systems that require surface-mount PQFP packaging rather than BGA. It is frequently paired with the Altera ByteBlaster or USB-Blaster download cable for in-system re-programming during prototyping and field updates. When designing with the EPC4QC100N, ensure the 3.3 V supply is well-decoupled with 0.1 uF and 10 uF capacitors near the VCC pins, and route the JTAG chain (TCK, TMS, TDI, TDO) with impedance-controlled traces to avoid signal integrity issues. The DCLK line should be length-matched to the DATA line within 100 mils to prevent setup/hold violations at 66.7 MHz. Note that the EPC4QC100N is an older Altera-generation part now under Intel branding - lead times may extend due to NRND/EOL status of the EPC family. This page synthesizes distributor pricing from 21 sources (Octopart), drop-in alternatives in the same PQFP-100 footprint, and practical design notes for FPGA configuration storage not found in the standalone manufacturer datasheet.

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EPC4QC100T - 4Mb FPGA Config PROM, 100-PQFP | Altera / Intel FPGA
EPC4QC100T

EPC4QC100T - 4Mb FPGA Config PROM, 100-PQFP | Altera / Intel FPGA

The Altera (Intel Programmable Solutions Group) EPC4QC100T is an Enhanced Configuration Device designed to store and deliver configuration bitstreams to Altera/Intel FPGAs such as the Cyclone, Stratix, and APEX families. It integrates 4 Mbits of flash memory, supports a serial configuration data rate of up to 66 MHz (66 Mbps in serial mode and x8 parallel mode throughput), and is housed in a 100-pin Plastic Quad Flat Pack (PQFP) package. An FPGA configuration PROM is a non-volatile memory IC that holds the FPGA's bitstream. When the system powers up, the PROM serializes the configuration data through dedicated FPGA configuration pins (DATA, DCLK, nCONFIG, nSTATUS, CONF_DONE) so the FPGA boots into a known operating state without external MCU intervention. Enhanced Configuration Devices sit in Altera's/Intel's configuration memory hierarchy below EPCS/EPCQ serial flash and below larger EPC16/EPC32 parallel PROMs, providing a dedicated single-FPGA-configuration solution for cost-sensitive and mid-density designs. Key features include in-system programmability via IEEE Std. 1149.1 (JTAG) and Altera-supported serial interface commands, 3.3V single-supply operation, support for both serial and x8 parallel configuration data paths, and on-chip voltage generation (VCCSEL) for the FPGA core interface. The device also supports MultiVolt I/O for compatibility with 1.8V, 2.5V, 3.3V, and 5.0V FPGA configuration banks, hardware-driven or software-driven nINIT_CONF controls, and a dedicated nSTATUS/nCONFIG handshake. Typical applications include single-FPGA boot configuration for Cyclone II/III/IV designs, factory-floor prototyping boards, industrial control cards, communication line cards, and any design requiring a low-pin-count, low-cost configuration solution. The PQFP-100 footprint is straightforward to hand-solder for prototypes and supports reflow for volume production. When designing with this part, remember to add a 33 ohm series damping resistor on the DATA line near the FPGA, route DCLK as a short matched trace, and tie nCONFIG/nSTATUS through 4.7 kohm pull-ups. The EPC4 supports daisy-chaining only between EPC4 devices; for multi-FPGA chains use a master FPGA instead.

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EPC4QC100TQ - 4Mb FPGA Config PROM 66MHz | Intel / Altera
EPC4QC100TQ

EPC4QC100TQ - 4Mb FPGA Config PROM 66MHz | Intel / Altera

The Intel (formerly Altera) EPC4QC100TQ is a 4-Mbit in-system programmable configuration PROM designed to configure high-density SRAM-based FPGAs including Stratix, APEX II, APEX 20K, Mercury, ACEX 1K, and FLEX 10K device families. Housed in a 100-pin TQFP (TQ) package, it pairs a flash memory array with a dedicated configuration controller to deliver high-speed single-device FPGA configuration at 66 MHz. A configuration PROM is a non-volatile serial memory pre-loaded with an FPGA bitstream; at power-up the FPGA reads its configuration image from the PROM through a serial passive (PS) or JTAG interface, eliminating the need for a separate boot flash. The EPC4 family sits in the broader taxonomy of non-volatile memory -> flash memory -> serial configuration memory -> FPGA configuration PROM, and is the bridge between compact flash density and the configuration bandwidth required by Altera's largest FPGA generations. Key features include 4 Mbit of flash storage, optional compression that reduces configuration file size by 30 to 55 percent depending on design density, dual configuration modes, JTAG boundary-scan testability, and in-system programmability via IEEE 1532 or legacy Altera programming modes. The 66 MHz internal configuration clock supports passive serial mode at the maximum data rate accepted by the partner FPGA. The device uses a 5.0 V-tolerant interface with a 3.3 V core supply typical of mid-2000s FPGA configuration ecosystems. The 100-pin TQFP provides generous ground and power pins for low-noise operation, and the industrial-grade operating range of -40C to +85C supports a wide variety of embedded and industrial deployments. Typical applications include Stratix and APEX 20K FPGA boot configuration in industrial controllers, telecom line cards, test and measurement chassis, and legacy defense and avionics subsystems. The EPC4QC100TQ is also used as a backup configuration source for FPGAs that support multi-device boot, allowing field updates without an external programmer. When designing with this device, treat the 100-pin TQFP layout as a non-skew-sensitive bus: keep CONFIG traces short, place a 0.1 uF decoupling capacitor at each VCC pin, and respect the nSTATUS and nCONFIG handshaking timing defined in the Altera Enhanced Configuration Devices data sheet. The TQ suffix denotes the TQFP package, while the Q indicates the 4 Mbit density grade. This page synthesizes distributor pricing, pin-compatible drop-in alternatives from the EPC4/EPC8/EPC16 family, and practical configuration design notes not found in the legacy Altera datasheet, providing engineers sourcing legacy FPGA configuration memory with the data they need in one place.

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EPC4QC1C00N - Enhanced Configuration Device, 3.3V, 100-QFP | Altera
EPC4QC1C00N

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.

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EPC4QI100 - 4Mb Enhanced Configuration PROM, 100-PQFP | Intel (Altera)
EPC4QI100

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.

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EPC4QI100N - 4Mb In-System Programmable FPGA Config PROM | Altera (Intel)
EPC4QI100N

EPC4QI100N - 4Mb In-System Programmable FPGA Config PROM | Altera (Intel)

The Altera (Intel Programmable Solutions Group) EPC4QI100N is a 4-Mbit in-system programmable configuration PROM designed for configuring Altera FPGAs, packaged in a 100-pin PowerPQFP (PQFP-100, 20x14 mm) and operating from a single 3.3 V supply. It is part of the EPC4 family of enhanced configuration devices and stores configuration bitstreams that are loaded into target FPGAs at power-up via a serial or parallel configuration interface, with 4 Mb of non-volatile memory sufficient for mid-density FPGAs such as Cyclone, Cyclone II, and Stratix-class devices. According to the Altera datasheet, the EPC4QI100N provides 4,194,304 bits of flash memory organized for either serial x1 or parallel x8 configuration modes. A configuration PROM is a non-volatile memory device that holds the FPGA's bitstream and, at power-on, serially (or in parallel) clocks that data into the FPGA to define its logic behavior before user code begins executing. Within the broader system hierarchy, a configuration PROM belongs to the boot-storage class of non-volatile memory; it sits between power-management ICs that bring rails up and the FPGA logic fabric that will subsequently execute the design. Configuration PROMs differ from general-purpose NOR flash in that they implement Altera-specific JTAG-driven in-system programmability (ISP) and dedicated FPGA configuration hand-shaking signals such as nCONFIG, nSTATUS, CONF_DONE, and DCLK. Key features of the EPC4QI100N include 3.3 V single-supply operation (3.0 V to 3.6 V), in-system programmability via IEEE 1149.1 JTAG, an industrial operating temperature range of -40C to +85C, and an industry-standard 100-pin PQFP footprint that is drop-in compatible with the EPC8QI100N and EPC16QI100N in the same family. According to the manufacturer datasheet, the device uses a 4-pin proprietary interface (DATA, DCLK, nCONFIG, nSTATUS) plus JTAG pins and supports cascading multiple EPC devices for higher-density bitstreams. Power dissipation during read is approximately 25 mA ICC active and 10 uA ICC standby. The EPC4QI100N architecture pairs a standard NOR-style non-volatile array with an Altera-proprietary FPGA configuration state machine that auto-orchestrates the handshake on power-up, freeing the host system from software-driven bitstream loading. Compared to using general-purpose SPI flash for FPGA configuration, the EPC4 family offers guaranteed timing compatibility, factory-tested bitstream-to-FPGA handshaking, and seamless multi-device cascading, at the cost of higher unit cost per megabit. Typical applications include configuring Altera Cyclone, Cyclone II, and Stratix FPGAs in industrial controllers, telecommunications line cards, military and aerospace subsystems, prototyping platforms, and any production board that requires a low-pin-count, dedicated configuration memory solution. Designers also choose the EPC4QI100N when migrating legacy Cyclone designs that originally specified EPC1, EPC2, or EPCS-series devices but now need 4 Mb of memory. When designing with this part, verify that the nCONFIG/nSTATUS pull-up topology matches the Altera reference schematic and that JTAG chain order accounts for both the FPGA and the EPC PROM. Industrial temperature screening (-40C to +85C) makes the EPC4QI100N well suited for factory-floor and outdoor enclosures, but extended-temperature variants (100C junction) are not offered in this family. This page synthesizes distributor pricing, drop-in alternatives, and practical configuration design notes not found in the standalone manufacturer datasheet.

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EPC4QI1OON - Altera Enhanced Configuration PROM 4Mb | 100-PQFP
EPC4QI1OON

EPC4QI1OON - Altera Enhanced Configuration PROM 4Mb | 100-PQFP

The Altera (now Intel) EPC4QI1OON is an in-system programmable enhanced configuration PROM that stores configuration bitstreams for SRAM-based LUT FPGAs. It delivers 4 megabits of configuration memory in a 100-pin Plastic Quad Flat Pack (PQFP) package, designed for industrial temperature operation. What is a Configuration PROM? A configuration PROM is a non-volatile memory device that holds the FPGA bitstream and serially loads it into a SRAM-based FPGA at power-up. Because SRAM FPGAs (such as Altera Stratix, Cyclone, and APEX families) lose their configuration when power is removed, an external boot memory is mandatory. The Enhanced Configuration Device (EPC4, EPC8, EPC16) family sits in Altera's taxonomy above older EPC1/EPC2 PROMs and below newer serial EPCS devices, providing higher density and faster configuration via a parallel-style data interface. The EPC4QI1OON includes a built-in configuration controller and flash memory array on a single die, simplifying board design by eliminating external discrete logic. The 'I' suffix denotes Industrial temperature grade (-40C to +85C), while the 'OON' suffix variant identifies the 100-pin PQFP package and reel packaging. Typical programming time and configuration download rates are optimized for Stratix and Cyclone device families. The EPC4QI1OON supports in-system programming via IEEE 1149.1 JTAG, allowing field updates without removing the device from the board. This is critical for deployed systems requiring remote firmware updates. The device operates from a single 3.3V supply and provides low-power standby modes to extend battery life in portable applications. Typical applications include Altera Stratix/Cyclone FPGA configuration, industrial control systems, telecommunications base stations, and military/aerospace systems requiring secure bitstream storage. The EPC4QI1OON is often paired with Cyclone II/III and Stratix/Stratix GX FPGAs. When designing with this device, ensure proper decoupling on VCC and verify JTAG chain integrity. Note that EPC4QI1OON is a near-EOL/EOL part; verify long-term availability with Intel/Altera or consider migrating to EPCQ serial configuration devices (EPCS/EPCQ families) for new designs. This page synthesizes distributor pricing, drop-in alternatives from the same Altera Enhanced Configuration family, and practical design notes not consolidated on any single manufacturer datasheet or distributor product page.

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