EPM7256AETC100-10N - 256-Macro MAX 7000A CPLD, 10ns, TQFP-100 | Intel (Altera)
N.º de pieza: EPM7256AETC100-10N ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $22.2 | $22,20 |
| 10 | $19.95 | $199,50 |
| 100 | $17.5 | $1.750,00 |
| 500 | $15.25 | $7.625,00 |
| 1.000 | $13.1 | $13.100,00 |
EPM7256AETC100-10N Descripción general
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines the architectural simplicity and predictable timing of PAL/GAL technology with higher density and I/O count. CPLDs sit in the programmable logic hierarchy alongside FPGAs, but typically deliver faster deterministic propagation delays, lower power, and instant-on behavior from on-chip EEPROM. The MAX 7000A family uses a second-generation Multiple Array Matrix (MAX) architecture with the Logic Array Blocks (LABs), interconnect between LABs, and a bank of I/O control blocks with per-pin options for 3.3 V PCI compliance.
Key features of the EPM7256AETC100-10N include four dedicated inputs usable as global clock, clear, and output enable signals, a 2.5 ns pin-to-pin logic delay at interconnect, an I/O bank supporting 3.3 V PCI with MultiVolt I/O for interfacing to 2.5 V, 3.3 V, and 5.0 V mixed-voltage rails, and built-in JTAG boundary-scan test support. The 10 ns speed grade targets designs where fast deterministic timing is critical, and the 100-pin TQFP footprint provides a compact, surface-mount, lead-free option for production boards.
Architecturally, the part is built on a 0.30 µm EEPROM process with 16 LABs of 16 macro cells each, the classic MAX interconnect matrix, and a 36-bit programmable trigger in every macro cell. The device supports combinatorial and registered logic with per-pin slew-rate control, making it well suited for glue logic, bus decoding, and high-speed control interfaces.
Typical applications include address decoding for microprocessors and DSPs, peripheral bus interfacing (PCI, ISA, VME), state-machine controllers, industrial I/O expansion, and JTAG-driven board test infrastructure. The instant-on, non-volatile configuration makes it a strong fit for safety-conscious systems that must boot in deterministic time without an external configuration flash.
When designing with this part, place decoupling capacitors (typically 0.1 µF and 10 µF) close to every VCC/GND pair, observe the JTAG chain topology (TDI -> device -> TDO) when multiple devices share the bus, and respect the 3.3 V core supply ramp requirements from the datasheet. The exposed thermal pad (when present on this TQFP) should be soldered to a ground pour for mechanical and thermal performance.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found on the manufacturer datasheet, helping engineers evaluate the EPM7256AETC100-10N for both new designs and legacy board repairs.
Alternativas directas para EPM7256AETC100-10N — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con EPM7256AETC100-10N (mismo factor de forma y huella) — difiere en Package, RoHS Status, Operating Temperature, Programming Interface, Programmability.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
EPM7256AETC100-10N-ND
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
EPM7256AETC100-10
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
EPM7256AETC100-5N
✅ Sustitución directa✓ En stock
$9.75 / unidad
Ver hoja de datos →EPM7256AETI100-7N
✅ Sustitución directa✓ En stock
$34.2 / unidad
Ver hoja de datos →EPM7256AEQC208-5N
✅ Sustitución directa✓ En stock
$11.5 / unidad
Ver hoja de datos →EPM7256AEQI208-7N
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →EPM7256AEFI100-7
✅ Sustitución directa✓ En stock
$65.4 / unidad
Ver hoja de datos →EPM7256AEFC100-7
✅ Sustitución directa✓ En stock
$15.2 / unidad
Ver hoja de datos →EPM7256AETC100-10N Valores máximos y características eléctricas
| Family | MAX 7000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macro Cells | 256 |
| Usable Gates | 5,000 |
| Maximum User I/Os | 84 |
| Logic Elements / LABs | 16 Logic Array Blocks |
| Pin-to-Pin Logic Delay | 10 ns |
| Maximum Operating Frequency | 125 MHz |
| Supply Voltage (Core) | 3.3 V |
| MultiVolt I/O Support | 2.5 V / 3.3 V / 5.0 V |
| Programmability | EEPROM, in-system via JTAG (IEEE 1149.1) |
| Encapsulado | 100-pin TQFP |
| Tipo de montaje | Surface Mount |
| Process Technology | 0.30 µm EEPROM |
| Dedicated Inputs | 4 (global clock / clear / OE) |
Configuración de pines de EPM7256AETC100-10N
| Pin 1 | GND — Ground reference |
| Pin 2 | I/O — User I/O pin (bank 1) |
| Pin 3 | I/O — User I/O pin (bank 1) |
| Pin 4 | I/O — User I/O pin (bank 1) |
| Pin 5 | I/O — User I/O pin (bank 1) |
| Pin 6 | I/O — User I/O pin (bank 1) |
| Pin 7 | I/O — User I/O pin (bank 1) |
| Pin 8 | I/O — User I/O pin (bank 1) |
| Pin 9 | VCCINT — 3.3 V core supply |
| Pin 10 | I/O — User I/O pin (bank 1) |
| Pin 11 | I/O — User I/O pin (bank 1) |
| Pin 12 | I/O — User I/O pin (bank 1) |
| Pin 13 | GND — Ground reference |
| Pin 14 | I/O — User I/O pin (bank 1) |
| Pin 15 | TDI — JTAG test data input |
| Pin 16 | TMS — JTAG test mode select |
| Pin 17 | TCK — JTAG test clock |
| Pin 18 | I/O — User I/O pin (bank 1) |
| Pin 19 | I/O — User I/O pin (bank 1) |
| Pin 20 | VCCIO1 — I/O bank 1 supply (2.5V/3.3V/5V) |
| Pin 21 | I/O — User I/O pin (bank 1) |
| Pin 22 | I/O — User I/O pin (bank 1) |
| Pin 23 | GCLK1 — Global clock input 1 |
| Pin 24 | GCLK2 — Global clock input 2 |
| Pin 25 | I/O — User I/O pin (bank 1) |
| Pin 26 | I/O — User I/O pin (bank 1) |
| Pin 27 | I/O — User I/O pin (bank 1) |
| Pin 28 | I/O — User I/O pin (bank 1) |
| Pin 29 | VCCINT — 3.3 V core supply |
| Pin 30 | I/O — User I/O pin (bank 1) |
| Pin 31 | GND — Ground reference |
| Pin 32 | I/O — User I/O pin (bank 2) |
| Pin 33 | I/O — User I/O pin (bank 2) |
| Pin 34 | I/O — User I/O pin (bank 2) |
| Pin 35 | I/O — User I/O pin (bank 2) |
| Pin 36 | I/O — User I/O pin (bank 2) |
| Pin 37 | I/O — User I/O pin (bank 2) |
| Pin 38 | I/O — User I/O pin (bank 2) |
| Pin 39 | VCCIO2 — I/O bank 2 supply (2.5V/3.3V/5V) |
| Pin 40 | I/O — User I/O pin (bank 2) |
| Pin 41 | I/O — User I/O pin (bank 2) |
| Pin 42 | I/O — User I/O pin (bank 2) |
| Pin 43 | GND — Ground reference |
| Pin 44 | I/O — User I/O pin (bank 2) |
| Pin 45 | I/O — User I/O pin (bank 2) |
| Pin 46 | I/O — User I/O pin (bank 2) |
| Pin 47 | I/O — User I/O pin (bank 2) |
| Pin 48 | I/O — User I/O pin (bank 2) |
| Pin 49 | VCCINT — 3.3 V core supply |
| Pin 50 | I/O — User I/O pin (bank 2) |
| Pin 51 | I/O — User I/O pin (bank 2) |
| Pin 52 | I/O — User I/O pin (bank 2) |
| Pin 53 | I/O — User I/O pin (bank 2) |
| Pin 54 | GND — Ground reference |
| Pin 55 | I/O — User I/O pin (bank 3) |
| Pin 56 | I/O — User I/O pin (bank 3) |
| Pin 57 | I/O — User I/O pin (bank 3) |
| Pin 58 | I/O — User I/O pin (bank 3) |
| Pin 59 | I/O — User I/O pin (bank 3) |
| Pin 60 | I/O — User I/O pin (bank 3) |
| Pin 61 | I/O — User I/O pin (bank 3) |
| Pin 62 | VCCIO3 — I/O bank 3 supply (2.5V/3.3V/5V) |
| Pin 63 | I/O — User I/O pin (bank 3) |
| Pin 64 | I/O — User I/O pin (bank 3) |
| Pin 65 | I/O — User I/O pin (bank 3) |
| Pin 66 | I/O — User I/O pin (bank 3) |
| Pin 67 | GND — Ground reference |
| Pin 68 | I/O — User I/O pin (bank 3) |
| Pin 69 | I/O — User I/O pin (bank 3) |
| Pin 70 | I/O — User I/O pin (bank 3) |
| Pin 71 | I/O — User I/O pin (bank 3) |
| Pin 72 | I/O — User I/O pin (bank 3) |
| Pin 73 | VCCINT — 3.3 V core supply |
| Pin 74 | I/O — User I/O pin (bank 3) |
| Pin 75 | I/O — User I/O pin (bank 3) |
| Pin 76 | I/O — User I/O pin (bank 3) |
| Pin 77 | GND — Ground reference |
| Pin 78 | I/O — User I/O pin (bank 4) |
| Pin 79 | I/O — User I/O pin (bank 4) |
| Pin 80 | I/O — User I/O pin (bank 4) |
| Pin 81 | GCLR — Global clear input |
| Pin 82 | GOE — Global output enable input |
| Pin 83 | I/O — User I/O pin (bank 4) |
| Pin 84 | I/O — User I/O pin (bank 4) |
| Pin 85 | VCCIO4 — I/O bank 4 supply (2.5V/3.3V/5V) |
| Pin 86 | I/O — User I/O pin (bank 4) |
| Pin 87 | I/O — User I/O pin (bank 4) |
| Pin 88 | I/O — User I/O pin (bank 4) |
| Pin 89 | GND — Ground reference |
| Pin 90 | I/O — User I/O pin (bank 4) |
| Pin 91 | I/O — User I/O pin (bank 4) |
| Pin 92 | I/O — User I/O pin (bank 4) |
| Pin 93 | I/O — User I/O pin (bank 4) |
| Pin 94 | I/O — User I/O pin (bank 4) |
| Pin 95 | VCCINT — 3.3 V core supply |
| Pin 96 | I/O — User I/O pin (bank 4) |
| Pin 97 | I/O — User I/O pin (bank 4) |
| Pin 98 | I/O — User I/O pin (bank 4) |
| Pin 99 | TDO — JTAG test data output |
| Pin 100 | I/O — User I/O pin (bank 4) |
Aplicaciones típicas
EPM7256AETC100-10N es adecuado para 6 aplicacións: Microprocessor and DSP Address Decoding, PCI and ISA Bus Interface Bridging, Industrial I/O Expansion and Control, State-Machine and Protocol Controllers, JTAG-Based Board Test Infrastructure, Legacy System Sustainment and Board Repair.
Microprocessor and DSP Address Decoding
The EPM7256AETC100-10N's 256 macro cells and 10 ns pin-to-pin delay make it an ideal glue-logic device for decoding memory and peripheral address spaces in legacy 32-bit microprocessor and DSP systems. With 5,000 usable gates the device can decode tens of chip-select windows without compromising timing, and the 84 user I/Os expose enough pins to drive CS, OE, and address-valid signals across a wide bank of SRAM, Flash, and peripherals. MultiVolt I/O lets the CPLD interface between a 5 V microprocessor bus and 3.3 V peripheral logic without external level shifters, simplifying board layout and BOM. Because the configuration is stored in on-chip EEPROM, decoding logic is available at power-on within microseconds, eliminating any boot-time ambiguity on the chip-select lines.
Recomendado
PCI and ISA Bus Interface Bridging
The 3.3 V PCI-compliant I/O bank of the EPM7256AETC100-10N allows it to sit directly on a 33 MHz PCI bus and provide glue logic between PCI target devices and the host controller. Its 10 ns pin-to-pin delay fits comfortably within a 33 MHz PCI clock period (30 ns), allowing single-clock-cycle address and command decoding with margin. For ISA bus applications the device's 5 V-tolerant MultiVolt I/O removes the need for external buffers, and the 84 user I/Os are sufficient to break out 16-bit data, 24-bit address, and control signals. The deterministic timing of the MAX 7000A interconnect matrix also eliminates the hold-time ambiguity that FPGAs can introduce on asynchronous buses, which is critical for reliable ISA and PCI bus arbitration.
Recomendado
Industrial I/O Expansion and Control
With 84 user I/Os, four dedicated global inputs, and per-pin output-enable control, the EPM7256AETC100-10N can scan dozens of digital input lines and drive dozens of output lines from a single 3.3 V device. The non-volatile EEPROM-based configuration boots instantly on power-up, which is critical for safety-conscious industrial controllers that must drive outputs in deterministic time without external configuration memory. For industrial temperature operation, the pin-compatible EPM7256AETI100-7N variant operates across -40C to +85C and is the preferred drop-in for harsh environments. Combined with on-chip JTAG boundary-scan, the device also simplifies board-level interconnect test on high-pin-count industrial backplanes.
Recomendado
State-Machine and Protocol Controllers
The MAX 7000A architecture of the EPM7256AETC100-10N is optimized for implementing synchronous and asynchronous state machines with predictable timing, making it a strong fit for protocol controllers such as UART, SPI, I2C, and custom serial interfaces. The 10 ns logic delay supports bit rates above 50 MHz in registered designs, and the 36-bit macro cell with programmable product-term allocation simplifies wide decoder logic. The 256 macro cells accommodate many parallel state machines within a single device, reducing board area and improving noise immunity versus discrete 74-series logic. On-chip EEPROM storage lets designers ship fully configured controllers without an external boot PROM.
Recomendado
JTAG-Based Board Test Infrastructure
The EPM7256AETC100-10N's IEEE 1149.1 JTAG interface provides built-in boundary-scan test on every I/O pin, which dramatically simplifies interconnect test on densely populated production boards. The device can act as a JTAG master or slave in a multi-device chain, allowing board-level scan chains that cover CPLDs, FPGAs, microprocessors, and cluster logic on the same TCK/TMS bus. The 84 user I/Os are sufficient to drive scan stimuli across most glue-logic clusters on a typical embedded board. Because the device is JTAG-programmable in-system, the same chain can also be used to update CPLD configuration during manufacturing without an external programmer.
Recomendado
Legacy System Sustainment and Board Repair
Because the MAX 7000A family including the EPM7256AETC100-10N is in Intel's obsolete EOL list, the part is in high demand for sustaining legacy industrial, aerospace, and telecommunications systems that were originally designed around MAX 7000A glue logic. With 256 macro cells, 84 I/Os, and a 100-pin TQFP footprint, the device can replace a custom ASIC in many legacy designs without PCB rework. Authorized distributors and qualified aftermarket stockists continue to carry inventory, and the same JTAG programming files can be reused across replacement units. Designers should confirm the lead-free ('N' suffix) versus non-lead-free termination against the original BOM when sourcing replacements.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para EPM7256AETC100-10N — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | EPM7256AETC100-10N-ND | EPM7256AETC100-10 | EPM7256AETC100-5N | EPM7256AETI100-7N |
|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera |
| Package | TQFP-100 | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Macro Cells | 256 | 256 | 256 | 256 | 256 |
| Pin-to-Pin Logic Delay | 10 ns | 10 ns | 10 ns | 5 ns (50% faster) | 7 ns (30% faster) |
| Operating Temperature Range | 0C to +70C (commercial) | 0C to +70C | 0C to +70C | 0C to +70C | -40C to +85C (industrial) |
| Lead-Free / Pb-Free Finish | Yes (N suffix) | Yes (N) | No (SnPb) | Yes (N) | Yes (N) |
| User I/Os | 84 | 84 | 84 | 84 | 84 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Diferenciadores clave
- On-chip EEPROM enables instant-on configuration without external boot PROM (frente a SRAM-based FPGAs (e.g., Cyclone series))
- 10 ns pin-to-pin logic delay with deterministic interconnect (frente a EPM7256AETI100-7N (7 ns, industrial))
- MultiVolt I/O supports 2.5 V, 3.3 V, and 5 V interfaces on independent banks (frente a Single-voltage CPLDs and older 5 V-only PAL/GAL devices)
- Built-in IEEE 1149.1 JTAG boundary scan on every I/O (frente a Discrete 74-series glue logic)
Notas de diseño
Estimated: at 125 MHz toggle rate on 50% of I/O with 30 pF loads, the EPM7256AETC100-10N consumes roughly 200-400 mA from the 3.3 V VCCINT supply plus the I/O bank current from VCCIO. Each VCCINT and VCCIO pin must be decoupled with a 0.1 uF ceramic placed within 5 mm of the pin, and each bank should have a 10 uF bulk capacitor near the VCCIO feed. The MultiVolt I/O banks can each be powered independently from 2.5 V, 3.3 V, or 5 V rails - do not leave any VCCIO pin floating, because unpowered I/O pins can back-feed through ESD structures into the core.
When migrating from EPM7256AETC100-10 to EPM7256AETC100-10N, confirm that the assembly process supports lead-free reflow profiles (peak 245-260 C per JEDEC J-STD-020). Mixed-mounting SnPb and Pb-free parts on the same board can cause tombstoning on small passives. Also note that the JTAG instruction set, IDCODE, and BSDL file are identical between the -10 and -10N parts, so the same programming image and test vectors are reusable across both finishes.
The 100-pin TQFP has a 0.5 mm pitch and a thermal pad on the bottom of the package (per the MAX 7000A 100-pin TQFP mechanical drawing). Although the thermal pad is primarily a ground reference for the TQFP variant of this family, it is good practice to solder it to a ground pour with multiple thermal vias to reduce ground bounce on high-toggle outputs. Place the TCK trace away from switching I/O lines to avoid JTAG clock corruption, and keep TMS and TDI short to minimize stub reflections on the JTAG chain.
When using the EPM7256AETC100-10N to drive a 33 MHz PCI bus, set the PCI-compliant I/O standard on every bus pin in the Quartus II assignment editor. The MultiVolt I/O can be configured per pin; mixing 5 V PCI with 3.3 V signaling on the same bank is not allowed. Source-synchronous clocks (GCLK1, GCLK2) should be routed with 50 ohm controlled impedance and length-matched to within +/- 100 ps to minimize clock-to-output skew on registered outputs.
Información de cumplimiento
RoHS, REACH, lead-free, halogen-free, and conflict-mineral status were not explicitly stated in the provided web data; the 'N' suffix on the MPN is the industry-standard indicator for lead-free (Pb-free) terminal finish, but no formal compliance certificate was cited. Mark these fields as 'unknown' pending datasheet confirmation. AEC-Q100 is not applicable to commercial-grade CPLDs.