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EPM3256AQI208-10N - MAX 3000A CPLD, 256 Macrocells, 10ns | Altera
EPM3256AQI208-10N

EPM3256AQI208-10N - MAX 3000A CPLD, 256 Macrocells, 10ns | Altera

The Altera (Intel) EPM3256AQI208-10N is a high-density, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, featuring 256 macrocells, 161 user I/Os, and a 10 ns pin-to-pin propagation delay in a 208-pin Plastic Quad Flat Pack (PQFP) package. It belongs to the -10 speed grade and operates with a 3.3 V core supply while supporting MultiVolt I/O that is compatible with 5.0 V, 3.3 V, and 2.5 V logic levels on its input and output pins, eliminating the need for external level shifters in mixed-voltage designs. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like Logic Array Blocks (LABs) on a single chip, connected via a programmable interconnect matrix. CPLDs occupy the architectural middle ground between simple SPLDs/PLDs and high-density FPGAs, providing deterministic timing, instant-on configuration from on-chip EEPROM, and high drive-strength outputs - ideal for glue logic, bus decoding, state-machine control, and I/O expansion. The MAX 3000A family from Altera (now Intel) was designed as a low-cost, high-performance EEPROM-based alternative to SRAM FPGAs in applications that demand predictable timing and instant-on behavior without external boot memory. Key features of the EPM3256AQI208-10N include 256 macrocells (equivalent to 5,000 usable gates), 161 user I/Os, 10 ns pin-to-pin logic delay with internal counter frequencies up to 227.3 MHz in faster grades, in-system programmability (ISP) via the IEEE 1149.1 JTAG interface, hot-socketing support, and PCI-SIG-compliant I/O timing. The -10 speed grade offers the slowest timing in the family, making it suitable for cost-sensitive designs where the absolute fastest logic delay is not required. Typical applications for this device include bus interface bridging, address decoding and latching in microcontroller/ASIC designs, glue logic for industrial control boards, peripheral I/O expansion, and legacy parallel-bus arbitration. The PQFP-208 package also allows hand-soldering or socket-based prototyping, which is useful for low-volume and educational designs. When designing with this part, ensure the JTAG chain is correctly terminated with TCK, TMS, TDI, and TDO pull-ups per the IEEE 1149.1 specification, and verify that the Quartus II or MAX+PLUS II toolchain is used for design entry because the MAX 3000A family is no longer supported by modern Intel Quartus Prime releases. Designers should also confirm that the PCI-compliant I/O timing is only guaranteed at the -4 through -7 speed grades, not at the -10 grade used here.

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EPM3256AT1144-10S - MAX 3000A CPLD, 256 Macro, TQFP-144 | Intel
EPM3256AT1144-10S

EPM3256AT1144-10S - MAX 3000A CPLD, 256 Macro, TQFP-144 | Intel

The Intel (formerly Altera) EPM3256AT1144-10S is a member of the MAX 3000A family of high-density, in-system programmable CMOS complex programmable logic devices (CPLDs). Housed in a 144-pin Thin Quad Flat Pack (TQFP) and offering 256 macrocells with a 10 ns pin-to-pin logic delay, this device targets glue-logic integration, bus interfacing, and state-machine consolidation in industrial, telecom, and embedded designs. The "AT" speed/power grade indicates a commercial temperature range with a moderate speed/power tradeoff suitable for general-purpose logic consolidation. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple PAL/GAL devices and FPGAs in the programmable logic hierarchy. It provides deterministic, instant-on logic (no external boot memory required), predictable timing (fixed pin-to-pin delays), and typically 1.8V-3.3V core operation with multi-voltage I/O support. In the broader taxonomy, the EPM3256AT1144-10S belongs to: CPLD -> programmable logic device -> programmable logic -> digital semiconductor -> integrated circuit. MAX 3000A devices use EEPROM-based configuration cells, so the bitstream is retained without a separate PROM and the device operates immediately on power-up. Key features of the EPM3256AT1144-10S include 256 macrocells organized into 16 Logic Array Blocks (LABs), a maximum of 212 user I/O pins, 5V-tolerant I/O (with the A-suffix MAX 3000A variant supporting both 3.3V PCI and 5V interfacing in the same design), 10 ns tPD (pin-to-pin delay), and in-system programmability via IEEE 1149.1 JTAG. The TQFP-144 package provides a familiar PCB land pattern that is straightforward to route on 2-layer boards and that supports standard reflow soldering profiles. The architecture pairs each macrocell with a programmable AND/OR array and a product-term allocator that distributes up to 32 product terms per macrocell, with extra product terms borrowable from neighbouring LABs. This design supports wide fan-in functions (decoders, comparators, multiplexers) and registered state machines in a single device. The MultiVolt I/O pins interface with 2.5V, 3.3V, and 5.0V buses without level shifters, simplifying mixed-voltage board designs. Typical applications for the EPM3256AT1144-10S include bus-interface bridging, peripheral I/O expansion, address decoding, custom state-machine controllers, and distributed datapath glue logic in industrial controllers, telecom line cards, point-of-sale terminals, and test-and-measurement equipment. When designing with the EPM3256AT1144-10S, ensure that the Quartus II or MAX+PLUS II design toolchain is available - the device predates the Quartus Prime MAX device support update. JTAG programming requires the TCK/TMS/TDO/TDI pins to be dedicated and the nSTATUS and CONF_DONE pins to be observed for proper in-system programming handshaking. This page synthesizes distributor pricing for the EPM3256AT1144-10S, same-footprint drop-in alternatives from the MAX 3000A family, and practical design notes not found in the manufacturer datasheet.

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EPM3256ATC144-10 - 256-Macrocell CPLD, 10ns, 144-TQFP | Intel / Altera
EPM3256ATC144-10

EPM3256ATC144-10 - 256-Macrocell CPLD, 10ns, 144-TQFP | Intel / Altera

The Intel (Altera) EPM3256ATC144-10 is a 256-macrocell CPLD from the MAX 3000A family, delivering 5,000 usable gates with a 10 ns pin-to-pin propagation delay and counter frequencies up to 95.2 MHz in a 144-pin TQFP (20x20 mm) package. It is a high-performance, low-cost CMOS EEPROM-based programmable logic device built on the Altera MAX architecture with 3.3-V in-system programmability (ISP) compliant with IEEE Std. 1532. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the deterministic timing of PAL/GAL architecture with the integration density of an FPGA. CPLDs sit in the hierarchy: programmable logic -> CPLD -> non-volatile logic device -> digital semiconductor. They are widely used as glue logic, bus bridges, and state-machine controllers where instant-on behavior and predictable timing matter more than raw gate count. Key features include 16 Logic Array Blocks (LABs) housing 256 macrocells, 116 user I/O pins with MultiVolt I/O supporting 5.0 V, 3.3 V, and 2.5 V logic interfaces, 3.3 V core supply (3.0 V to 3.6 V), in-system programmability via IEEE 1532, JTAG boundary-scan test support, and four pin-to-pin speed grades from 4.5 ns up to 10 ns. The 144-TQFP package provides ample I/O and routing for medium-density glue-logic designs. The MAX 3000A architecture uses an EEPROM-based interconnect matrix that holds configuration without an external boot PROM. Each macrocell contains a programmable flip-flop with local feedback, allowing designers to implement registered and combinatorial logic with deterministic 10 ns delays regardless of routing path length. Typical applications include bus-interface bridging (PCI/ISA glue logic), address decoding and memory mapping, state-machine control in industrial controllers, I/O expansion for microcontrollers, and reconfigurable peripheral glue logic in telecom and embedded systems. The IEEE 1532 ISP support allows in-field firmware updates via JTAG. When designing with the EPM3256ATC144-10, ensure the core supply (VCCINT) is regulated to 3.3 V +/- 10 percent and that decoupling capacitors (0.1 uF per VCC pin plus bulk) are placed within 5 mm of each supply pin to suppress switching noise during ISP. This page synthesizes distributor pricing, drop-in alternatives sourced from web data, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a faster decision path than reading the 46-page PDF end-to-end.

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EPM3256ATC144-10AA - MAX 3000A CPLD, 256 Macrocells, 10ns TQFP-144 | Altera
EPM3256ATC144-10AA

EPM3256ATC144-10AA - MAX 3000A CPLD, 256 Macrocells, 10ns TQFP-144 | Altera

The Altera EPM3256ATC144-10AA is a member of the MAX 3000A Complex Programmable Logic Device (CPLD) family, delivering 256 macrocells, 5,000 usable gates, and a 10 ns pin-to-pin propagation delay in a 144-pin TQFP package. This commercial-temperature device operates from a 3.3 V core supply and supports 2.5 V, 3.3 V, or 5.0 V I/O operation through the multi-voltage VCCIO pins, enabling mixed-voltage interfacing without external level shifters. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell blocks on a single chip with a central interconnect. Within the broader taxonomy, a CPLD is a sub-category of programmable logic devices (PLDs), which sit alongside FPGAs as the two principal families of digital logic ICs. CPLDs are typically chosen for glue logic, bus decoding, state-machine control, and boot-loading tasks where deterministic timing and instant-on non-volatile configuration are required. Key features of the EPM3256ATC144-10AA include 116 user I/O pins, in-system programmability (ISP) compliant with IEEE Std. 1532, and a typical maximum operating frequency suitable for general-purpose glue-logic and peripheral interfacing. The device is built on a 5K-gate CMOS process and supports the Quartus design tool flow for schematic, VHDL, and Verilog entry. Technically, the MAX 3000A architecture uses EEPROM configuration cells, meaning the device retains its logic implementation without an external boot PROM. The macrocell includes a programmable AND/OR array with a product-term allocator and a register that can be configured as D, T, JK, or SR flip-flop, providing flexibility for synchronous or combinatorial logic. Typical applications include bus-interface bridging (e.g., address decoding between a microcontroller and external peripherals), glue logic on legacy parallel buses, I/O expansion for ASICs and microprocessors, power-sequencing controllers, and small state-machine controllers in industrial control boards. When designing with this part, ensure that all VCCIO banks are powered before configuration begins and that JTAG pins (TCK, TMS, TDI, TDO) are properly pulled to avoid spurious configuration. Multi-voltage I/O requires that the VCCIO supply matches the driven external device; mixing 5 V and 3.3 V signals requires separate VCCIO banks. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single reference for sourcing and substitution decisions.

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EPM3256ATC144-10N - 256-Macro CPLD, 10ns, 144-TQFP | Altera
EPM3256ATC144-10N

EPM3256ATC144-10N - 256-Macro CPLD, 10ns, 144-TQFP | Altera

The Altera EPM3256ATC144-10N is a high-density, EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, delivering 256 macrocells and 116 user I/Os in a 144-pin TQFP package. It operates from a single 3.3 V supply and offers a pin-to-pin propagation delay of 10 ns with counter frequencies reaching 227.3 MHz. The IEEE Std. 1149.1 JTAG interface provides advanced pin-locking, while built-in boundary-scan test circuitry and IEEE Std. 1532-compliant in-system programmability enable concurrent multi-vendor ISP. A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic device that sits between discrete logic gates and FPGAs in the programmable logic hierarchy. Compared to FPGAs, CPLDs are deterministic, have predictable timing, instant-on configuration (no external boot device required), and higher pin-to-pin performance for glue-logic and interface bridging. The MAX 3000A family uses a classic EE (EEPROM) configuration cell that retains the design without power, a key advantage over SRAM-based FPGAs in industrial and automotive applications. Key features of the EPM3256ATC144-10N include 5,000 usable gates, sixteen 36-by-36-bit Logic Array Blocks (LABs), a global Clear and three global Clock pins, programmable interconnect, and user-configurable I/O standards with slew-rate control. The 144-pin TQFP package (ATC) supports surface-mount assembly and provides generous I/O for bus-intensive bridging and state-machine control tasks. Typical applications include bus-interface bridging (e.g., legacy 5 V/3.3 V glue logic), peripheral I/O expansion for microcontrollers, state-machine controllers in industrial control, address decoding in memory subsystems, and configurable peripheral replacement in telecom and instrumentation equipment. Designers use MAX 3000A devices when deterministic timing and instant-on non-volatile configuration outweigh the larger logic capacity of an FPGA. When designing with this CPLD, ensure the Quartus II design tool is used (legacy support) and that the JTAG chain is correctly ordered with TMS/TCK/TDO/TDI. Decoupling: place 0.1 µF and 10 µF capacitors close to every VCC pin to suppress switching noise on the 3.3 V rail.

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EPM3256ATC144-7 - MAX 3000A 256-Macro CPLD, 7.5ns TQFP-144 | Altera
EPM3256ATC144-7

EPM3256ATC144-7 - MAX 3000A 256-Macro CPLD, 7.5ns TQFP-144 | Altera

The Altera (Intel) EPM3256ATC144-7 is a 256-macrocell, 116-I/O CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, housed in a 144-pin TQFP package with a 7.5 ns pin-to-pin propagation delay and a 144-pin TQFP (LFQFP, gull-wing) commercial-grade temperature rating of 0C to 70C. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like logic blocks with a programmable interconnect matrix on a single chip. In the broader taxonomy, the CPLD sits below the FPGA (Field-Programmable Gate Array) in complexity but above discrete 74-series glue logic in integration density; the MAX 3000A family is Altera's entry-level CPLD line based on the company's classic MAX architecture using EEPROM configuration cells. Key features include 256 macrocells, 116 user I/Os, 7.5 ns pin-to-pin delay (speed grade -7), 3.3-V in-system programmability (ISP) compliant with the IEEE Std. 1532 specification, and counter frequencies up to 227.3 MHz. The device operates from a single 3.3 V core supply and supports 2.5 V, 3.3 V, or 5.0 V I/O levels through dedicated VCCINT and VCCIO pins. PCI SIG compliance is met at the -4 through -10 speed grades, making the EPM3256ATC144-7 usable in PCI Local Bus Revision 2.2 designs. Typical applications include bus-interface glue logic, address decoding, state-machine control, peripheral I/O expansion, and PCI bus target/bridge designs. The high I/O count (116) makes it well suited for replacing multiple discrete 74LS/74HC packages with a single programmable device, while the 7.5 ns delay enables interfacing with 66 MHz PCI and similar high-speed control buses. When designing with this part, plan the JTAG chain (IEEE 1149.1) early and reserve the four JTAG pins (TMS, TCK, TDI, TDO plus optional TRST). Ensure VCCINT and VCCIO decoupling uses 0.1 uF ceramic capacitors placed within 3 mm of each supply pin to suppress ISP-induced transients. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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EPM3256ATC144-7N - MAX 3000A CPLD 256 Macro 7.5ns | Altera
EPM3256ATC144-7N

EPM3256ATC144-7N - MAX 3000A CPLD 256 Macro 7.5ns | Altera

The Intel / Altera EPM3256ATC144-7N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, providing 256 macro cells, 5,000 usable gates, and 116 user I/Os in a 144-pin TQFP (commercial, 0 to 70C) package. It supports in-system programmability (ISP) via a 3.3V supply, offers 7.5ns pin-to-pin propagation delay, and operates at an internal toggle frequency up to 126.6 MHz with multi-volt I/O compatibility for 3.3V and 5.0V system interfaces. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macro cell arrays on a single chip with a programmable interconnect matrix. Within the broader taxonomy, a CPLD sits between simple SPLDs/GALs and FPGAs: it provides predictable timing, instant-on non-volatile configuration (EEPROM-based for MAX 3000A), and deterministic I/O pin-to-pin delays. CPLDs are commonly used as glue logic, bus bridges, interface translators, and state-machine controllers where low latency and instant boot behavior matter more than raw LUT density. Key features of the EPM3256ATC144-7N include a 5K gate-equivalent fabric with 16 logic array blocks (LABs), 256 macro cells each containing a programmable AND/OR array with a configurable register, and JTAG-compliant IEEE 1149.1 boundary-scan support. The device provides programmable power reduction per macro cell and a 4-pin JTAG interface for in-system programming. Operating from 3.0V to 3.6V VCCIO with internal 3.3V tolerance, the part is well suited to bridging legacy 5V logic to modern 3.3V ASICs/ASICs and microcontrollers. The MAX 3000A architecture combines a classic EEPROM-based configuration memory (so the device powers up instantly with its design loaded) with multi-level interconnect, enabling design IP portability across the MAX 3000A family. The 7.5ns tPD (pin-to-pin) figure makes it one of the faster members of the family, while still offering lower static power than larger MAX II devices for non-timing-critical glue logic. Typical applications include bus decoding and address mapping for legacy microcontrollers and x86 systems, 5V-to-3.3V level translation glue logic, peripheral control state machines (UART, I2C, SPI bridges), and PCI/cPCI bus interface bridging. Industrial designers also use the part for machine-control I/O expansion and as a hardware state machine replacing discrete 74-series logic. A practical design consideration: although the EPM3256ATC144-7N is in-system programmable, the EEPROM programming step adds ~1 second to prototype iteration; Quartus II design tools are required (legacy MAX+PLUS II also supported). For new designs where boot latency is acceptable, MAX II CPLDs offer higher density at similar price points, so the MAX 3000A remains the preferred choice for legacy pin-compatible upgrades. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with full cross-reference and lifetime-buy guidance.

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EPM3256ATC44-7 - MAX 3000A CPLD, 256 Macro, 7.5ns | Altera
EPM3256ATC44-7

EPM3256ATC44-7 - MAX 3000A CPLD, 256 Macro, 7.5ns | Altera

The Altera (Intel PSG) EPM3256ATC44-7 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, packaged in a 44-pin TQFP and offering 256 macro cells with a 7.5 ns pin-to-pin propagation delay. The device operates from a 3.3 V core supply with 5.0 V-tolerant I/O and supports 3.3 V in-system programmability (ISP) through the IEEE 1149.1 JTAG interface. What is a CPLD? A Complex Programmable Logic Device is a non-volatile programmable logic device that sits between simple PAL/GAL devices and high-density FPGAs in the programmable logic hierarchy. CPLDs are built from an array of macro cells, each containing a programmable AND/OR structure backed by a small register and fed by a global interconnect. They are non-volatile (retain configuration without power), have deterministic propagation delay (typically a few nanoseconds, regardless of routing), and are ideal for glue logic, address decoding, bus interfacing, and state-machine control where predictable timing matters more than raw logic density. Key features of the EPM3256ATC44-7 include 256 macro cells, 16 logic array blocks (LABs), 161 user I/Os in the 256-pin BGA version of this die (the 44-pin TQFP provides a smaller I/O count), 7.5 ns tPD, a maximum internal operating frequency up to 175.4 MHz (per device family datasheet), and 3.3 V ISP via JTAG. The device is built on a 0.30 µm CMOS EEPROM process, has multiVolt I/O supporting 2.5 V, 3.3 V, and 5.0 V interfaces, and includes open-drain output option for emulating wired-OR buses. Architecturally, the MAX 3000A family uses a programmable interconnect array (PIA) that fans out signals from any LAB to any other LAB with a single predictable delay, eliminating the routing variability of SRAM-based FPGAs. This makes the EPM3256ATC44-7 particularly well suited to time-critical decoder and interface logic. The 44-pin TQFP variant is a low-pin-count member of the family that still benefits from the full die's logic capacity. Typical applications include 5 V-to-3.3 V bus bridging in industrial controllers, address decoding and chip-select generation in legacy 68k and x86 systems, peripheral I/O expansion for microcontrollers lacking sufficient GPIO, and glue logic in point-of-sale terminals, instrumentation front-ends, and telecom line cards. The deterministic timing and non-volatile configuration also suit safety-critical and industrial equipment where the device must boot into a known state without external configuration memory. When designing with the EPM3256ATC44-7, observe 3.3 V VCCIO constraints, decouple all four VCC/GND pairs with 0.1 µF ceramics placed within 5 mm of the pins, and use the JTAG chain for both ISP programming and boundary-scan test. The 44-pin TQFP exposes only a subset of the device's macro I/Os, so verify in Quartus/MAX+PLUS II that all signals you intend to assign fit the 44-pin package before committing to layout. This page synthesizes the manufacturer datasheet specifications, current distributor stock and pricing, drop-in package-compatible alternatives, and practical design notes not collected in any single manufacturer document, helping engineers evaluate the EPM3256ATC44-7 for both new designs and legacy support.

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EPM3256ATI144-10 - MAX 3000A 256-Macrocell 10ns CPLD | Intel
EPM3256ATI144-10

EPM3256ATI144-10 - MAX 3000A 256-Macrocell 10ns CPLD | Intel

The Intel (formerly Altera) EPM3256ATI144-10 is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, offering 256 macrocells, 116 user I/Os, and a 10 ns pin-to-pin propagation delay in a 144-pin TQFP (20x20 mm) industrial-temperature package. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between small discrete logic gates (74-series) and large FPGAs in the programmable logic hierarchy. It provides predictable timing, instant-on operation from on-chip EEPROM, and is well suited to glue logic, bus interface, and state-machine functions. The MAX 3000A family uses a classic MAX architecture with 16 Logic Array Blocks (LABs), each containing 16 macrocells interconnected by a programmable interconnect array (PIA). Key features include 3.3V in-system programmability (ISP) compliant with IEEE Std. 1532, MultiVolt I/O supporting 1.8V/2.5V/3.3V/5.0V mixed-voltage interfacing, 5,000 typical usable gates, 116 user I/O pins, and a maximum toggle frequency of 95.2 MHz. The device operates from a single 3.0V to 3.6V supply with industrial temperature range of -40°C to +85°C. PCI-compatible I/O drive and programmable slew-rate control make it suitable for board-level bus applications. The EPM3256ATI144-10 leverages EEPROM-based configuration cells for instant-on behavior with no external boot memory required, predictable deterministic routing delays that simplify static timing analysis, and JTAG-based IEEE 1149.1 boundary-scan support for board testability. Designers can target the part with the legacy Altera MAX+PLUS II or the modern Quartus II toolchain. Typical applications include bus-interface bridges, address decoding and glue logic for legacy microcontrollers, peripheral controllers (UART, SPI, I2C bridges), industrial control boards, and PCI add-in card glue logic. Its instant-on, deterministic timing, and 116 I/O make it a versatile choice for medium-complexity logic consolidation. When designing with this device, ensure JTAG chain integrity (TDI/TDO/TMS/TCK pull-ups per IEEE 1149.1), respect the 3.3V VCCINT tolerance, and use Quartus II 13.0 SP1 or MAX+PLUS II for legacy design flows. Note that new designs should generally migrate to MAX II or MAX V families. This page synthesizes distributor availability, drop-in same-family alternatives, and practical design notes not consolidated on a single manufacturer page.

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EPM3256ATI144-10N - MAX 3000A CPLD, 256 Macro, 144-TQFP | Altera
EPM3256ATI144-10N

EPM3256ATI144-10N - MAX 3000A CPLD, 256 Macro, 144-TQFP | Altera

The Altera (Intel) EPM3256ATI144-10N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, featuring 256 macrocells, 5,000 usable gates, and 116 user I/Os in a 144-pin TQFP industrial-grade package. Built on the classic MAX architecture with 10 ns pin-to-pin propagation delay, the device operates from a 3.3 V core supply with multi-voltage I/O support for 1.8 V, 2.5 V, and 3.3 V interfaces, making it drop-in compatible with mixed-voltage logic families. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like macrocell arrays with a central interconnect matrix, occupying the architectural niche between small SPLDs and high-density FPGAs. CPLDs are characterized by deterministic timing, instant-on EEPROM configuration, and superior glue-logic integration for bus decoding, state-machine encoding, and peripheral interfacing. Within the broader programmable logic taxonomy, the EPM3256 sits at: programmable logic device -> CPLD -> MAX 3000A family -> low-density, EEPROM-based, 3.3 V segment. Key features include 3.3 V in-system programmability (ISP) compliant with IEEE Std. 1532, IEEE Std. 1149.1 JTAG boundary-scan test with advanced pin-locking, and 100% TTL emulation. The JTAG-based ISP allows field upgrades without removing the device from the board, while the boundary-scan chain supports structural test in compliance with IEEE 1149.1. The 144-pin TQFP package has a 22 mm x 22 mm body with a 0.5 mm lead pitch for standard SMT assembly lines. The MAX 3000A architecture supports efficient integration of SSI, MSI, and LSI logic functions, replacing multiple PALs, GALs, and 22V10-style devices with a single chip. Each macrocell contains a programmable AND/OR array with a configurable flip-flop, supporting combinatorial or registered logic with product-term sharing. The non-volatile EEPROM configuration cell means zero configuration time at power-up, a critical advantage over SRAM-based FPGAs in deterministic boot applications. Typical applications include bus-interface bridging (e.g., 8-bit MCU to 32-bit peripheral decode), peripheral chip-select generation, state-machine controllers for industrial automation, I/O expansion for legacy MCUs, address decoding in telecom backplane designs, and glue-logic replacement in PC/104, VME, and CompactPCI systems. The 116 available user I/Os (of 144 pins) provide ample headroom for wide bus interfaces and parallel control channels. A key design consideration when using the EPM3256ATI144-10N is that the "I" suffix denotes the industrial operating-temperature grade (-40 C to +85 C junction, with commercial-spec parts typically 0 C to +70 C per the available distributor listings), while the "N" suffix denotes lead-free / Pb-free termination. Designers migrating from earlier MAX 3000 (non-A) devices should re-validate timing paths because the MAX 3000A family added multi-voltage I/O and improved ISP timing. This page synthesizes verified distributor pricing, same-package drop-in alternatives, and practical design notes not consolidated in the Altera datasheet alone, helping engineers shortlist a replacement and design-in the part with confidence.

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EPM3256ATI144-7N - 256-Macrocell MAX 3000A CPLD, 7.5ns, TQFP-144 | Altera
EPM3256ATI144-7N

EPM3256ATI144-7N - 256-Macrocell MAX 3000A CPLD, 7.5ns, TQFP-144 | Altera

The Altera (Intel) EPM3256ATI144-7N is a 256-macrocell member of the MAX 3000A family of complex programmable logic devices (CPLDs), housed in a 144-pin TQFP package. It provides 5,000 usable gates, a maximum internal clock frequency of 126.6 MHz, and a typical pin-to-pin propagation delay of 7.5 ns at the -7 speed grade. The device is built on a 3.3 V core with MultiVolt I/O that supports 5.0 V, 3.3 V, and 2.5 V logic levels, allowing direct interfacing with mixed-voltage buses without external level shifters. A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EPROM-based programmable logic device that combines multiple PLA-like macrocell blocks on a single chip, sitting between small discrete logic (gates, 74-series ICs) and large FPGAs. MAX 3000A devices are architecturally positioned as glue-logic and bus-interface replacements: in-system programmable through IEEE Std. 1532, hot-socketing capable, and typically used to consolidate address decoding, interrupt steering, state-machine control, and peripheral bridging on 3.3 V/5 V boards. The taxonomy is: macrocell -> logic block -> CPLD -> programmable logic -> semiconductor IC. Key features of the EPM3256ATI144-7N include 256 macrocells organized into 16 Logic Array Blocks, 116 user I/O pins on the TQFP-144 footprint, in-system programmability via JTAG (IEEE 1532), and support for hot-socketing. The MultiVolt I/O interface lets the core run at 3.3 V while output banks independently drive 5.0 V, 3.3 V, or 2.5 V loads. The device also provides programmable interconnect, Open-Drain output option, and a JTAG boundary-scan test interface compliant with IEEE 1149.1. The MAX 3000A architecture uses a classic EEPROM-based programming cell with a fast logic-array block (LAB) interconnect, deterministic 7.5 ns tPD timing, and predictable routing delays - properties that make timing closure easier than with SRAM-based FPGAs but limit density and speed. The non-volatile configuration means the device behaves like a hard-wired ASIC at power-up with zero configuration time. Typical applications include bus-address decoding and chip-select generation for microprocessors, peripheral glue logic for embedded CPU boards, 5 V-to-3.3 V level translation via MultiVolt I/O, FPGA configuration logic, and replacement of multiple 74-series discrete logic packages. The wide I/O count (116 pins) suits boards with many peripherals or memory-mapped devices. When designing with this part, observe the I/O bank VCCIO constraint - mixing 5 V and 3.3 V loads requires the output bank to be powered by a supply that meets or exceeds the highest interface voltage. Decouple every VCCINT and VCCIO pin with 0.1 microfarat ceramic capacitors placed close to the package. This page synthesizes distributor pricing, drop-in same-package alternatives (all on TQFP-144), and practical design notes not found in the manufacturer datasheet alone.

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EPM3512AFC-7N - 512-Macrocell MAX 3000A CPLD, 7.5ns, BGA-256 | Intel (Altera)
EPM3512AFC-7N

EPM3512AFC-7N - 512-Macrocell MAX 3000A CPLD, 7.5ns, BGA-256 | Intel (Altera)

The Intel (formerly Altera) EPM3512AFC-7N is a 512-macrocell CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, housed in a 256-ball FineLine BGA package with a -7 (7.5 ns) speed grade and commercial 0 to 70 C operating range. The MAX 3000A architecture combines high-performance, low-cost non-volatile programmability with in-system programmability (ISP) compliant to IEEE Std. 1532, enabling concurrent ISP across multiple PLD vendors. The device offers 208 user I/Os and 3.3-V core logic with MultiVolt I/O supporting mixed-voltage interfacing on a single chip. A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic device that combines multiple programmable logic array blocks (LABs) interconnected by a programmable interconnect array (PIA). CPLDs are deterministic, pin-locked, and boot instantly at power-up, making them well-suited for glue logic, bus interfacing, and control-plane functions. Within the broader taxonomy, the CPLD sits between discrete logic (74-series gates) and FPGAs: more capable than discrete logic but less complex than FPGAs, with deterministic timing and instant-on behavior that FPGAs typically cannot match. Key features include 512 macrocells distributed across 16 Logic Array Blocks, 16 dedicated inputs, 208 user I/Os, and 7.5 ns pin-to-pin propagation delay (tPD) for the -7 speed grade. The device supports 3.3-V ISP through the JTAG (IEEE 1149.1) interface and offers programmable power-saving modes per macrocell. MultiVolt I/O pins interface with 1.8-V, 2.5-V, 3.3-V, and 5.0-V systems without external level shifters, simplifying board-level integration in mixed-voltage designs. The MAX architecture uses a classic AND-OR sum-of-products structure with EEPROM configuration memory, providing instant-on operation and unlimited reprogram cycles in-system. The PIA routes signals between LABs with predictable, fixed delay, which simplifies static timing closure and makes the part a strong fit for synchronous control logic, address decoding, and bus arbitration where deterministic latency is more important than raw LUT density. Typical applications include bus interface bridging (PCI to local bus), address decoding in embedded systems, state-machine controllers, glue logic between microprocessors and peripherals, and 5-V-tolerant I/O expansion in mixed-voltage boards. The instant-on behavior also makes it useful in power-sequencing controllers, reset distribution, and industrial control logic that must wake deterministically. When designing with this device, plan I/O bank voltages against the VCCIO pins (banks of 8 or 16 I/Os share a VCCIO rail), reserve four JTAG pins (TCK, TMS, TDI, TDE) for ISP, and ensure the BGA-256 PCB layout has adequate microvia and via-in-pad capability. Note that the -7 speed grade is the slowest in the family; -10 and -15 variants are faster and may be required for tighter timing budgets. This page synthesizes distributor inventory, same-family drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, accelerating sourcing and design-in for engineers evaluating MAX 3000A CPLDs for new designs or legacy refresh.

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EPM3512AFC256-10 - MAX 3000A CPLD, 512 Macrocells | Intel / Altera
EPM3512AFC256-10

EPM3512AFC256-10 - MAX 3000A CPLD, 512 Macrocells | Intel / Altera

The Intel / Altera EPM3512AFC256-10 is a high-density, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, featuring 512 macrocells, 208 I/O pins, and 2 Logic Array Blocks in a 256-pin FBGA (Fine-pitch Ball Grid Array) package. It supports pin-to-pin propagation delays as fast as 10 ns and internal counter frequencies up to 87 MHz, with 3.3-V in-system programmability (ISP) via a built-in IEEE Std. 1149.1 JTAG interface. What is a CPLD? A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple SPLDs/glue-logic PALs and full FPGAs. The hierarchy runs: programmable logic -> SPLD -> CPLD -> FPGA -> programmable logic device family. CPLDs use a sum-of-products architecture with on-chip EEPROM or flash, providing instant-on behavior, deterministic timing, and robust pin-to-pin delays — ideal for bus bridging, address decoding, I/O expansion, and control logic where FPGAs are overkill. The MAX architecture specifically combines high-density logic with predictable interconnect delays. Key features include 10,000 usable gates, 32 macrocells per LAB, 3.3-V core and I/O supply with 5-V tolerant I/O, support for IEEE Std. 1532 concurrent ISP across vendors, and JTAG boundary-scan testing. The 256-ball FCBGA package enables dense board layouts for high I/O count applications. Pin-to-pin delays of 10 ns make the device suitable for synchronous interface glue logic at moderate clock rates. The MAX 3000A architecture employs a continuous interconnect scheme routing signals through the entire chip via fast logic paths between LABs. Built on advanced CMOS EEPROM technology, the device is non-volatile — programmed configuration is retained through power cycles without external boot memory, distinguishing it from SRAM-based FPGAs that require external configuration storage. Typical applications include bus interface bridging, peripheral control logic in industrial and embedded systems, address decoding and interrupt management in microcontroller designs, state machine implementation in motor control, and I/O expansion for ASICs and processors. The combination of non-volatile storage, JTAG ISP, and high I/O count makes the device attractive for production volume glue-logic consolidation. When designing with this device, ensure your JTAG chain ordering is correct if multiple devices are in series, since IEEE Std. 1149.1 boundary-scan requires TDI/TDO daisy-chain discipline. Verify I/O bank voltage compatibility with mixed 3.3-V and 5-V peripherals, and confirm that 87 MHz counter speeds meet timing margin for your target application. This page synthesizes distributor pricing, drop-in MAX 3000A alternatives, and practical CPLD design notes not found in the manufacturer datasheet alone.

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EPM3512AFC256-10N - MAX 3000A CPLD, 512 Macros, 256 FBGA | Altera
EPM3512AFC256-10N

EPM3512AFC256-10N - MAX 3000A CPLD, 512 Macros, 256 FBGA | Altera

The Intel / Altera EPM3512AFC256-10N is a high-performance, low-cost CMOS EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 3000A family, featuring 512 macrocells, 10K usable gates, and 208 user I/O pins in a 256-ball FineLine BGA (FBGA) package. It operates from a 3.3 V core supply (VCCINT) and supports 3.3 V or 2.5 V I/O banks via VCCIO, delivering a maximum internal operating frequency of up to 116 MHz with a pin-to-pin logic delay of 10 ns. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple SPLDs/PLDs and large FPGAs in the programmable logic hierarchy: SPLD -> CPLD -> FPGA. The MAX architecture integrates multiple Logic Array Blocks (LABs) interconnected by a programmable interconnect array (PIA) and provides predictable, deterministic timing suitable for glue logic, bus decoding, and state-machine replacement. Key features of the EPM3512AFC256-10N include in-system programmability (ISP) through the built-in IEEE Std. 1149.1 JTAG interface and IEEE Std. 1532 concurrent ISP support, 10 ns tPD (pin-to-pin delay), up to 4.5 ns tSU (setup time), and 32 product-terms per macrocell. The device supports multiVolt I/O for interfacing with 2.5 V, 3.3 V, and 5 V systems (with external pull-ups), and provides open-drain output options. It is built on 5.0 V-tolerant I/O cells powered by 3.3 V VCCINT. Architecturally, the EPM3512AFC256-10A-equivalent die uses Altera's classic MAX EEPROM-based logic fabric with a global PIA, four dedicated input clocks per device, and per-macrocell flip-flops with configurable clear/preset and clock-enable. The 256-pin FBGA offers high board-density routing for designs with extensive user I/O. Programming is supported through the ByteBlasterMV, MasterBlaster, or USB-Blaster download cables using Altera Quartus II design software. Typical applications include bus-interface bridging, address decoding and chip-select generation, peripheral glue logic in embedded systems, and pin-compatible upgrades to MAX 7000S/AE devices in 5 V legacy boards. The 256-ball FBGA footprint is ideal for space-constrained designs where high I/O count is required. When designing with this part, ensure VCCINT is a clean 3.3 V (typical Icc 35-180 mA standby to operating) and that JTAG chain integrity is verified for ISP. Plan for 100% factory-test vector coverage since the part is one-time-programmable (OTP) in production configurations and not field-upgradable without a JTAG chain. This page synthesizes distributor pricing, drop-in compatible MAX 3000A/MAX 7000 alternatives, FBGA package handling notes, and JTAG ISP guidance not consolidated in the original Altera datasheet.

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EPM3512AFC256-18 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera
EPM3512AFC256-18

EPM3512AFC256-18 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera

The Altera EPM3512AFC256-18 is a member of the MAX 3000A programmable logic device family, providing 512 macrocells in a 256-ball FineLine BGA (FC) package with an 18 ns pin-to-pin logic delay. It is fabricated on a 5V-tolerant CMOS EEPROM process and is in-system programmable (ISP) through a JTAG/IEEE Std. 1532 interface, allowing concurrent programming from multiple PLD vendors. The device operates from a 3.3 V core supply with separate VCCIO banks that can be set to 2.5 V or 3.3 V for mixed-voltage I/O interoperability. A Complex Programmable Logic Device (CPLD) is a non-volatile, instantly-on logic device that combines multiple PAL-like macrocell blocks with a central interconnect matrix, bridging the gap between discrete 74-series glue logic and high-density FPGAs. Within the broader programmable logic taxonomy, the MAX 3000A family sits below FPGAs in density but offers deterministic timing, zero-configuration latency, and high I/O drive strength that make it ideal for bus decoding, address decoding, state-machine control, and power-up sequencer applications. It belongs to the larger class of programmable logic devices (PLDs) within the semiconductor hierarchy. Key features of the EPM3512AFC256-18 include 512 macrocells distributed across 16 Logic Array Blocks (LABs), a maximum of 212 user I/O pins, and the Fast-Function (FF) input register path that delivers the 18 ns tPD1 timing specification. Each macrocell provides a programmable register with D, T, JK, or SR flip-flop modes, a programmable product-term array of 32 to 64 terms per macrocell, and selectable global or local clocking. The device includes an IEEE Std. 1149.1 JTAG boundary-scan interface and the MultiVolt I/O feature, allowing each I/O bank to interface independently with 2.5 V, 3.3 V, or 5.0 V devices. Architecturally, the MAX 3000A family uses a hierarchical interconnect called the Programmable Interconnect Array (PIA), which routes signals between any LAB and any I/O pin without contention. The non-volatile EEPROM configuration cell enables true zero-power standby and instant-on behavior at power-up, eliminating the need for external boot memory. The 256-ball BGA package provides a 1.0 mm pitch, enabling compact board layouts for high-density designs. Typical applications for the EPM3512AFC256-18 include glue-logic consolidation in industrial controllers, register-based peripheral interfacing on legacy PCI/ISA platforms, address decoding for memory subsystems, and bus-width translation between 8-bit, 16-bit, and 32-bit processors. It is also deployed as a power-supply sequencer and reset-distribution controller in ATCA/uTCA and network switches where deterministic power-up behavior is required. When designing with this device, ensure that VCCINT (3.3 V) and VCCIO (2.5 V or 3.3 V) rails are decoupled with bulk and ceramic capacitors placed adjacent to each supply pin group. The BGA package requires careful PCB layout for fanout - typically a 4- or 6-layer stack-up with microvia or via-in-pad technology is recommended to escape the 1.0 mm pitch ball array reliably. Quartus II Web Edition or MAX+PLUS II software supports design entry and programming of this legacy MAX 3000A device. This page synthesizes distributor pricing, drop-in same-family alternatives (EPM3512AFC256-10, EPM3512AFC256-10N), and practical design notes drawn from the MAX 3000A Data Sheet that are not aggregated on any single distributor product page.

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EPM3512AFC256-19 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera
EPM3512AFC256-19

EPM3512AFC256-19 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera

The Altera EPM3512AFC256-19 is a high-density member of the MAX 3000A family of CMOS Complex Programmable Logic Devices (CPLDs), delivering 512 macrocells, 10000 usable gates, and ISP-compliant configuration in a 256-ball FineLine BGA package. The MAX 3000A family is built on a 0.30 µm EEPROM-based process, providing non-volatile in-system programmability via IEEE Std. 1532. With a -19 speed grade and 3.3 V core operation, this device targets glue-logic, bus-interface, and state-machine consolidation roles where deterministic propagation delay matters more than raw logic density. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell arrays on a single chip with a global interconnect. The MAX 3000A architecture sits hierarchically between simple SPLDs and FPGAs: it offers instant-on behavior (no boot PROM required), predictable timing with pin-to-pin delays specified in the datasheet, and a logic density (10000 gates) below typical SRAM FPGAs but well above 22V10-style SPLDs. It belongs to the broader category of programmable logic devices within digital semiconductors. Key specifications include 512 macrocells, 10000 usable gates, 80 MHz maximum operating frequency, and 7.5 ns pin-to-pin combinatorial propagation delay at the -19 speed grade. The device exposes 208 user I/O pins across two I/O banks, supports 3.3 V or 2.5 V VCCIO operation for mixed-voltage interfacing, and provides in-system programmability through a standard JTAG interface (IEEE 1149.1) plus the ISP-compliant IEEE 1532 protocol for multi-vendor concurrent programming. Architecturally, the EPM3512AFC256-19 partitions its 512 macrocells across 16 Logic Array Blocks (LABs), each containing 32 macrocells with a shared programmable interconnect. Each macrocell integrates a programmable AND/OR array, a configurable flip-flop, and per-macrocell control signals (clear, clock, preset, OE). The device includes four dedicated input pins and global routing for clock, clear, and output-enable networks, ensuring predictable timing closure across all paths. Typical applications include bus-interface bridging (e.g., PCI-to-ISA glue logic), address decoding and chip-select generation in microcontroller systems, state-machine and sequencer consolidation, peripheral I/O expansion, and legacy-logic replacement on 3.3 V or 5.0 V mixed-voltage boards. The instant-on, non-volatile nature of the MAX 3000A also suits industrial control boards that must operate immediately at power-up without bootloader latency. Designers should note that the -19 speed grade provides the slowest propagation delay in the EPM3512AFC256 family; if timing margins are tight, the -10 or -7 speed grades offer faster pin-to-pin delays in the identical 256-ball BGA footprint, enabling speed upgrade without PCB rework. The MAX 3000A family is mature and supported by legacy Quartus II design software. This page synthesizes distributor inventory, drop-in alternatives, and design notes not found in the standalone datasheet, organized for engineer quick-reference and AI-search citation.

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EPM3512AFC256-2 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera
EPM3512AFC256-2

EPM3512AFC256-2 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera

The Altera EPM3512AFC256-2 is a member of the MAX 3000A family of Complex Programmable Logic Devices (CPLDs), delivering 512 macrocells, 12 logic array blocks, and a maximum of 212 user I/O pins in a 256-ball FineLine BGA package. The device supports in-system programmability via IEEE Std. 1149.1 (JTAG) and operates from a 3.3 V core supply with MultiVolt I/O that can be configured for 2.5 V or 3.3 V output drivers while accepting 2.5 V, 3.3 V, and 5.0 V inputs on every pin. A CPLD, or Complex Programmable Logic Device, is a non-volatile programmable logic device that combines multiple PLA-style macrocells with a centralized interconnect fabric. The MAX 3000A family sits in the broader taxonomy of programmable logic: CPLD -> programmable logic -> logic IC -> semiconductor. CPLDs are typically chosen over FPGAs when designers need instant-on non-volatile configuration, deterministic pin-to-pin propagation delays (typically 3.5-7.5 ns tPD for this family), and a smaller, more predictable power envelope than SRAM-based FPGAs. Key features of the EPM3512AFC256-2 include 512 macrocells organized into 16 logic array blocks (LABs) of 32 macrocells each, 12 dedicated input pins feeding a global interconnect, MultiVolt I/O supporting mixed-voltage system design, JTAG-based boundary-scan test support, and a -2 speed grade delivering faster propagation delay than the -7 or -10 grades. The BGA-256 package maximizes I/O density for I/O-intensive glue-logic applications where the PCB has the routing capability to support a 1.0 mm pitch array. Architecturally, the device is built on a 0.30 um CMOS EEPROM process with a 5-V tolerant input structure and 2.5 V/3.3 V output drive. The pin-to-pin propagation delay for the -2 speed grade is in the range of 3.5 ns tPD, with a maximum toggle frequency (fCNT) in the hundreds of MHz range for internal counters. The MAX 3000A architecture uses a classic AND-OR plane with a programmable interconnect matrix, providing deterministic, jitter-free timing that is easier to model than FPGA routing delays. Typical applications include bus-interface bridging (e.g., 8/16/32-bit glue logic between microcontrollers and peripherals), address decoding and chip-select generation in microprocessor systems, power-up sequencing control, JTAG-controlled board-level test access, and replacement of discrete 74-series TTL/MSI glue logic. The wide I/O count makes it well-suited to high-density memory-interface cards, telecom line cards, and industrial controllers. When designing with the EPM3512AFC256-2, ensure that the BGA-256 footprint uses 1.0 mm ball pitch and that PCB routing allows fan-out from the inner-row balls. Decoupling should follow the MAX 3000A datasheet recommendation of 0.1 uF and 10 uF bulk capacitors placed close to the supply pins. Programming is performed via JTAG (IEEE 1149.1) or via the legacy Altera ByteBlaster interface. This page synthesizes distributor pricing, same-family drop-in alternatives from the Altera/Intel MAX 3000A and MAX II families, and practical design notes that go beyond what is in the manufacturer's datasheet.

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EPM3512AFC256-20 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera
EPM3512AFC256-20

EPM3512AFC256-20 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Altera

The Altera (Intel) EPM3512AFC256-20 is a member of the MAX 3000A family of Complex Programmable Logic Devices (CPLDs) housed in a 256-ball Fine-pitch Ball Grid Array (FBGA) package. The MAX 3000A family is a non-volatile, electrically-erasable CMOS programmable logic family delivering 512 macrocells and approximately 10,000 usable gates with a 20 ns pin-to-pin propagation delay (the -20 speed grade). It is intended for high-density glue-logic, bus-interface, and state-machine replacement designs where multiple 74-series TTL functions can be consolidated into a single in-system programmable device. Background: A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that lives in the taxonomy programmable logic -> logic IC -> integrated circuit. Unlike an FPGA, a CPLD uses a deterministic, sum-of-products architecture with on-chip EEPROM/flash configuration memory, giving it instant-on behavior, predictable timing, and a fixed number of macrocells (large groups of product terms feeding an OR gate and a flip-flop). The MAX 3000A is the second-generation MAX family, succeeding the original MAX 7000/MAX 3000 series with a 3.3 V core and multi-voltage I/O support for 2.5 V, 3.3 V, and 5.0 V mixed-mode interfaces. Key features of the EPM3512AFC256-20 include 512 macrocells, 10,000 typical gates, a maximum toggle frequency that supports glue-logic clock rates, JTAG-based IEEE 1149.1 boundary-scan, and in-system programmability via the Altera ByteBlaster or BitBlaster download cable. The device supports 2.5-V, 3.3-V, and 5.0-V I/O operation through separate VCCINT (internal) and VCCIO (I/O driver) supply pins, enabling direct interfacing to legacy 5 V TTL peripherals. The 256-ball FBGA package supports the largest pin-count variants in the family and is suitable for surface-mount designs with controlled-impedance signal routing. Architecturally, the MAX 3000A uses an enhanced EEPROM cell for configuration, allowing the device to retain its programmed logic across power cycles without an external boot PROM. The 512 macrocells are organized into logic array blocks (LABs) interconnected by a programmable interconnect array (PIA). Each macrocell contains a programmable AND/OR array followed by a flip-flop, giving designers a flexible mix of combinational and registered logic. Typical applications include bus-interface bridging (e.g., 8/16/32-bit glue logic), address decoding, peripheral control, and state-machine consolidation in industrial controllers, telecom line cards, and embedded computing platforms. Designers typically choose the MAX 3000A when they need non-volatile, instant-on logic with predictable timing rather than the higher gate counts of an FPGA. When designing with this device, ensure that the VCCINT and VCCIO rails are properly decoupled with 0.1 uF ceramic capacitors placed close to the package, and that unused I/O pins are configured as outputs driving ground to minimize power consumption. Programming voltage management is handled internally, but designers should follow Altera's JTAG chain guidelines when cascading multiple MAX 3000A devices. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical BGA-layout guidance not found in the standalone manufacturer datasheet.

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EPM3512AFC256-21 - 512-Macrocell MAX 3000A CPLD, 256-BGA | Altera
EPM3512AFC256-21

EPM3512AFC256-21 - 512-Macrocell MAX 3000A CPLD, 256-BGA | Altera

The Altera EPM3512AFC256-21 is a member of the MAX 3000A family of Complex Programmable Logic Devices (CPLDs), delivering 512 macrocells, 10,000 usable gates, and a 256-ball FineLine BGA package. It is rated for industrial temperature operation and supports In-System Programmability (ISP) compliant with the IEEE Std. 1532 specification, enabling concurrent ISP from multiple PLD vendors on the same board. A Complex Programmable Logic Device (CPLD) is a non-volatile, flash- or EPROM-based programmable logic device that combines the instant-on characteristics of PAL/GAL architectures with the high integration of modern FPGAs. The MAX 3000A family sits in the broader hierarchy of programmable logic devices -> programmable logic -> digital semiconductor -> integrated circuit, providing deterministic timing, JTAG-based programming, and low power consumption. CPLDs are typically chosen for glue logic, bus bridging, interface translation, and power-up sequencing tasks in systems where a small FPGA would be over-specified and a microcontroller is too slow. Key features of the EPM3512AFC256-21 include 512 macrocells organized in 16 Logic Array Blocks (LABs), a maximum operating frequency of 87 MHz, multi-volt I/O supporting 2.5 V / 3.3 V / 5.0 V operation via separate VCCINT and VCCIO pins, and a JTAG-based ISP interface. The device uses a non-volatile EPROM/EEPROM cell array that retains configuration without an external boot PROM, and the FineLine BGA-256 package enables compact board layouts for high-density designs. The architecture is based on the classic MAX 3000A macrocell structure with a programmable interconnect array (PIA), allowing each macrocell to implement combinatorial or registered functions with selectable clear, preset, and clock options. The 87 MHz maximum frequency supports common glue-logic interfaces such as PCI bus bridges, memory controllers, and asynchronous-to-synchronous logic conversion. Typical applications include industrial control glue logic, legacy bus interface bridging (e.g., ISA-to-PCI or parallel-to-LVCMOS), address decoding for embedded systems, and power-up sequencing in telecommunications and networking hardware. Designers also use MAX 3000A devices for state-machine replacement and timing-critical decoder logic in mixed-voltage designs. When designing with the EPM3512AFC256-21, place decoupling capacitors close to each VCCINT and VCCIO pin pair, route JTAG signals with impedance-controlled traces, and respect the BGA-256 PCB layout rules (escape via diameters, ground plane continuity). Compared to a small FPGA such as the MAX II family, the EPM3512AFC256-21 offers lower quiescent power and instant-on behavior but cannot match the logic density or block-RAM resources. This page synthesizes distributor availability, drop-in speed/package alternatives, and practical design notes that are not consolidated on the manufacturer's datasheet cover page, helping procurement and engineering teams make faster sourcing decisions.

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EPM3512AFC256-22 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Intel
EPM3512AFC256-22

EPM3512AFC256-22 - MAX 3000A CPLD, 512 Macrocells, BGA-256 | Intel

The Intel (formerly Altera) EPM3512AFC256-22 is a member of the MAX 3000A family of Complex Programmable Logic Devices (CPLDs), delivering 512 macrocells in a 256-ball FineLine BGA package. The -22 speed grade corresponds to a tPD (pin-to-pin propagation delay) of approximately 22 ns, making it well suited for glue-logic, bus interfacing, and state-machine replacement tasks where deterministic timing is more important than raw clock rate. A CPLD is a non-volatile programmable logic device that sits in the broader hierarchy between discrete logic gates (74xx) and large FPGAs. CPLDs are characterized by instant-on (no external boot PROM), predictable routing delays, and high-drive I/O capable of directly driving buses. The MAX 3000A family in particular implements multiple Logic Array Blocks (LABs) interconnected by a programmable switch matrix (PIA), with on-chip EEPROM configuration cells that retain bitstream without external memory. The 512-macrocell density places the EPM3512 in the upper end of the MAX 3000A family, suitable for medium-complexity bus bridges and peripheral controllers. Key features of the EPM3512AFC256-22 include 512 macrocells across 16 Logic Array Blocks, programmable I/O standards (2.5V, 3.3V, or 5.0V VCCIO), IEEE Std. 1532-compliant in-system programmability (ISP), and JTAG boundary-scan test support. The FC256 package (FineLine BGA, 256 balls, 1.0 mm pitch) maximizes board density while the A-grade denotes the commercial/industrial process with 5.0V tolerant I/O. The device operates from a 3.3V VCCINT supply and supports hot-socketing for live insertion. Typical applications include bus decoding and address mapping in embedded processor boards, peripheral glue logic between microcontrollers and ASICs, board-level signal conditioning and voltage translation, and replacement of multiple 74-series TTL packages with one programmable device. The instant-on EEPROM-based architecture makes the MAX 3000A family especially valuable in safety-critical or industrial systems where a long FPGA configuration time would be unacceptable. When designing with the EPM3512AFC256-22, ensure that your I/O bank VCCIO is wired correctly for 2.5V, 3.3V, or 5.0V interfaces, and use the Altera/Intel Quartus design suite for synthesis and fitting. For a lower-density drop-in option in the same package, consider the EPM3256AFC256 family (256 macrocells), or for higher density, the EPM3512AFC256 variants with faster speed grades (-15, -10).

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EPM3512AFC256-23 - MAX 3000A CPLD, 512 Macrocells, 256-BGA | Altera
EPM3512AFC256-23

EPM3512AFC256-23 - MAX 3000A CPLD, 512 Macrocells, 256-BGA | Altera

The Altera (Intel) EPM3512AFC256-23 is a member of the MAX 3000A family of Complex Programmable Logic Devices (CPLDs) delivering 512 macrocells, 10,000 usable gates, and a maximum operating frequency of approximately 178.6 MHz (tPD = 5.5 ns internal, 23 ns pin-to-pin) in a 256-ball FineLine BGA package. It supports in-system programmability via IEEE Std. 1149.1 (JTAG) and features MultiVolt I/O that allows each device to interface with 2.5 V, 3.3 V, or 5.0 V logic on a per-bank basis. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the architectural simplicity of PAL/GAL with the density of an FPGA, providing fast, deterministic propagation delays for glue logic, bus decoding, and state-machine implementation. The MAX 3000A family sits in the broader hierarchy as CPLD -> programmable logic -> logic IC -> integrated circuit -> semiconductor, serving as the high-density tier above the legacy MAX 7000 series. Key features include 512 macrocells organized in 16 Logic Array Blocks (LABs) of 32 macrocells each, 100% routable resources, JTAG-based boundary-scan test support, in-system programmability (ISP) through the JTAG interface, and pin compatibility with other MAX 3000A devices in the same 256-pin BGA footprint. The 256-ball FineLine BGA provides a compact 17 mm x 17 mm form factor. The device is fabricated on a 0.30 µm CMOS EEPROM process, giving the MAX 3000A family its non-volatile, instant-on behavior with zero standby current for configuration memory. The MultiVolt I/O architecture separates VCCINT (3.3 V internal core) from VCCIO (2.5 V/3.3 V/5.0 V selectable output driver) banks, enabling mixed-voltage interfacing without external level translators. Typical applications include industrial control glue logic, address decoding for microprocessor and DSP systems, bus interfacing between 5 V and 3.3 V peripherals, peripheral controller replacement of discrete 74-series TTL/CMOS logic, and state-machine implementation in test and measurement equipment. When designing with the EPM3512AFC256-23, allocate sufficient decoupling (one 0.1 µF ceramic per VCC/VCCIO ball group plus bulk capacitors near the supply pins) and follow Altera's recommended JTAG chain topology for in-system programming. The BGA package requires X-ray or optical inspection of solder joints in production.

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EPM3512AFC256-2N - MAX 3000A CPLD, 512 Macrocells | Intel
EPM3512AFC256-2N

EPM3512AFC256-2N - MAX 3000A CPLD, 512 Macrocells | Intel

The Intel EPM3512AFC256-2N is a member of the MAX 3000A family of high-density, high-performance CMOS Complex Programmable Logic Devices (CPLDs) housed in a 256-ball FineLine BGA (FC) package. Built on a 0.30 µm EEPROM-based process, it provides 512 macrocells, 32 logic array blocks (LABs), and 212 user-available I/O pins, delivering non-volatile, single-chip programmable logic for glue-logic, bus-interface, and state-machine designs. A Complex Programmable Logic Device (CPLD) is a non-volatile digital IC that combines multiple PAL-like macrocell arrays with a programmable interconnect fabric, providing deterministic timing and instant-on behavior. Within the broader semiconductor hierarchy, the EPM3512AFC256-2N sits as: CPLD -> programmable logic device -> digital logic IC -> semiconductor. CPLDs are typically chosen over FPGAs for control-plane, decoder, and interface bridging tasks where fast propagation delay and predictable timing are more critical than raw LUT density. Key features of this device include in-system programmability via IEEE Std. 1532-compliant JTAG, support for 2.5 V, 3.3 V, or 5.0 V I/O operation through separate VCCINT and VCCIO pins, and a typical pin-to-pin propagation delay in the single-digit nanosecond range. The MAX 3000A family architecture provides bus-friendly input/output structures, 3.3 V PCI-compliant I/O when configured, and a MultiVolt interface that allows mixed-voltage interfacing with 5.0 V, 3.3 V, and 2.5 V devices on the same board. From a system-architecture perspective, the EPM3512AFC256-2N's 512-macrocell capacity makes it suitable for designs that exceed the capacity of smaller 32- or 64-macrocell devices, while remaining more power-efficient and deterministic than equivalent-density FPGAs. The non-volatile EEPROM configuration cell means the device powers up instantly in a known state, eliminating the configuration-time latency of SRAM-based FPGAs and avoiding external boot PROMs. Typical applications include bus-interface bridging (e.g., PCI to local bus), address decoding and chip-select generation for microprocessor systems, high-speed state machines, peripheral controllers in industrial and embedded platforms, and glue-logic consolidation in legacy designs. Designers frequently use the MAX 3000A family to replace discrete 74-series logic, reducing board area and BOM count. When designing with this device, allocate adequate decoupling (typically one 0.1 µF per VCC pin and bulk capacitance near the package) and follow Intel/Altera FineLine BGA layout guidelines. The IEEE 1532 ISP interface requires a 4-wire JTAG chain plus optional pull-ups on TCK, TMS, and TDI for stable in-system programming. This page synthesizes distributor pricing, drop-in alternatives in the same FC-256 package, and practical design considerations not found in the manufacturer datasheet alone.

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EPM3512AFC256-3N - MAX 3000A CPLD 512 Macrocells | Altera
EPM3512AFC256-3N

EPM3512AFC256-3N - MAX 3000A CPLD 512 Macrocells | Altera

The Altera (now Intel) EPM3512AFC256-3N is a high-density CMOS CPLD from the MAX 3000A family, providing 512 macrocells, 10K usable gates, and 116.3 MHz maximum operating frequency in a 256-ball FineLine BGA (FC-256) package. It features in-system programmability compliant with IEEE Std. 1532, supports multi-vendor concurrent ISP, and operates from a 3.3 V core supply with selectable 2.5 V, 3.3 V, or 5.0 V I/O bank operation. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the architectural simplicity of PAL/GAL with higher density macrocell arrays and on-chip EEPROM configuration memory. Within the broader hierarchy, a CPLD belongs to programmable logic devices (PLDs) and sits alongside FPGAs, which are SRAM-based and require external boot memory; CPLDs are typically used for glue logic, bus decoding, interface bridging, and power-up sequencing functions where deterministic timing and instant-on behavior matter more than raw logic density. Key features include the MultiVolt I/O interface supporting mixed-voltage buses (2.5 V / 3.3 V / 5.0 V) on the same die, a JTAG-based IEEE 1149.1 boundary-scan test interface, and the speed grade ‘-3’ indicating a tPD of approximately 3.5 ns and an fCNT in the 116 MHz range. The 256-ball FineLine BGA package provides compact board integration with low parasitic inductance, suitable for high-speed bus interface designs. The device supports up to 16 logic array blocks (LABs) and offers JTAG-based programming via the dedicated JTAG pins. Typical applications include bus decoding and address latch logic in microcontroller and DSP systems, glue logic replacement for 7400-series TTL on legacy boards, power-on reset / sequencing controllers, and I/O expansion bridges between processors and peripherals. The instant-on non-volatile configuration makes the EPM3512AFC256-3N particularly suitable for industrial control, telecommunications line cards, and white-goods controllers where deterministic boot behavior is mandatory. When designing with this device, ensure the VCCINT (3.3 V core) and VCCIO (I/O driver) rails are properly decoupled with 0.1 µF and 10 µF capacitors placed close to the package. The -3 speed grade is the slowest of the MAX 3512 family; verify timing closure carefully for clock frequencies above 80 MHz. Boundary-scan test vectors should be generated using Quartus II or the legacy MAX+PLUS II toolchain.

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EPM3512AFC256-5C - MAX 3000A CPLD, 512 Macrocells, 256-BGA | Altera
EPM3512AFC256-5C

EPM3512AFC256-5C - MAX 3000A CPLD, 512 Macrocells, 256-BGA | Altera

The Altera EPM3512AFC256-5C is a member of the MAX 3000A family of Complex Programmable Logic Devices (CPLDs) housed in a 256-ball FineLine BGA (FBGA) package. It integrates 512 macrocells with 10,000 usable gates and a maximum operating frequency of 95.2 MHz, providing non-volatile, instant-on programmable logic for glue-logic, bus-interface, and state-machine applications. The device operates from a 3.3 V core supply and supports user I/O voltages of 2.5 V, 3.3 V, or 5.0 V on a banked architecture. A CPLD is a non-volatile programmable logic device that sits architecturally between discrete glue logic and an FPGA. Within the broader semiconductor taxonomy, a CPLD is a programmable logic device, which is a subset of logic ICs, which fall under digital integrated circuits. The MAX 3000A family uses a classic EEPEOM-based macrocell fabric with a single, central interconnect (the Logic Array Block, or LAB) backbone, which is distinct from the SRAM-based distributed architecture used in FPGAs. The macrocell fabric is ideal for wide combinational and registered logic because every macrocell connects to a global interconnect that yields predictable, deterministic tPD (pin-to-pin delay) timing, even at full utilization. Key features of the EPM3512AFC256-5C include in-system programmability via IEEE Std. 1532, multi-volt I/O (MVIO) support allowing mixed-voltage interfacing without external level shifters, JTAG boundary-scan testability, and pin-to-pin delays (tPD) as low as 5 ns. The speed grade "-5" designates a 5 ns tPD / 95.2 MHz fCNT performance bin, while the "C" suffix indicates the commercial operating temperature range of 0 °C to +70 °C. The 256-ball FBGA package measures 17 mm × 17 mm with a 1.0 mm ball pitch, providing high board-density integration while supporting up to 212 user I/O pins. Typical applications include bus-interface bridging, address decoding, peripheral glue logic, power-up sequencing controllers, and legacy system maintenance designs that require drop-in replacement for discontinued parallel-logic ICs. The MAX 3000A device is also well-suited to low-volume industrial controllers, I/O expansion, and ASIC prototyping where deterministic timing and non-volatile configuration simplify system bring-up. When designing with the EPM3512AFC256-5C, observe the MultiVolt I/O bank configuration rules so that each VCCIO bank matches the voltage of the devices it drives. The in-system programming circuitry requires the IEEE 1532-compliant 4-wire JTAG chain to be accessible after board assembly for field updates, and unused pins must be set per the datasheet to avoid leakage. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone datasheet, giving engineers a faster path from selection to production bring-up of MAX 3000A designs.

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