EPM7256AETC100-7 - 256-Macrocell MAX 7000A CPLD, 7.5ns TQFP-100 | Intel
N.º da peça: EPM7256AETC100-7 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.95 | $1.395,00 |
| 500 | $12.1 | $6.050,00 |
| 1.000 | $10.45 | $10.450,00 |
EPM7256AETC100-7 Visão geral
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like macrocell arrays on a single chip with predictable, deterministic timing. CPLDs sit in the broader taxonomy of programmable logic devices (PLD -> CPLD/FPGA -> logic IC -> integrated circuit), filling the niche between simple gate arrays and high-density FPGAs. They are favored for glue logic, bus interfacing, state-machine control, and power-up instant-on applications where deterministic timing and in-system programmability are required.
The EPM7256AETC100-7 features 256 macrocells organized in logic array blocks (LABs), with each macrocell containing a programmable AND/OR array and a configurable flip-flop. The device supports in-system programmability (ISP) via JTAG (IEEE 1149.1), eliminating the need for a separate programmer. Its 3.3 V core supply with 5 V tolerant I/O on selected pins enables easy interfacing with mixed-voltage systems, while the 7.5 ns tPD supports high-speed control applications at frequencies up to 126.6 MHz.
Typical applications include bus interface bridging (PCI, ISA, VME), peripheral glue logic, address decoding and chip-select generation, state-machine controllers, and power-up sequencing logic in microcontroller and ASIC systems. The MAX 7000A architecture also includes programmable interconnect switches, user-defined macrocell flip-flop clocks, and a global clear pin for synchronous design initialization.
When designing with this part, note that the device has been classified as obsolete/end-of-life by Intel - consider the EPM7256AETC100-7N or EPM7256AETI100-7N variants for new designs. Verify the tPD speed grade (7 = 7.5 ns) and temperature grade (C = commercial 0 to 70C) match your application requirements before substituting.
This page synthesizes distributor pricing, pin-compatible MAX 7000A drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para EPM7256AETC100-7 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com EPM7256AETC100-7 (mesmo formato e footprint) — diferindo em Package, Operating Temperature, Series, Process Technology, Programming Interface.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPM7256AETC100-10N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$13.1 / unidade
Ver ficha técnica →EPM7256AETC100-7N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$48.75 / unidade
Ver ficha técnica →EPM7256AETI100-7
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
EPM7256AETC100-5N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.75 / unidade
Ver ficha técnica →EPM7256AEFC100-7
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$15.2 / unidade
Ver ficha técnica →EPM7256AEFC100-10N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$24.5 / unidade
Ver ficha técnica →EPM7256AETC100-7 Classificações máximas e características elétricas
| Family | MAX 7000A |
| Series | EPM7256 |
| Device Type | CPLD - Complex Programmable Logic Device |
| Technology | EEPROM-based, CMOS |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| Number of I/Os | 84 |
| Number of Logic Array Blocks (LABs) | 16 |
| Core Supply Voltage | 3.3 V |
| Pin-to-Pin Delay (tPD) | 7.5 ns |
| Maximum Operating Frequency | 126.6 MHz |
| Temperatura de operação | 0C to +70C (Commercial) |
| Encapsulamento | TQFP-100 (ET100) |
| Tipo de montagem | Surface Mount |
| Programming Interface | JTAG (IEEE 1149.1) - In-System Programmable |
| Status RoHS | Unknown - part marked obsolete |
| Tipo de memória | EEPROM (non-volatile) |
Configuração de pinos do EPM7256AETC100-7
| Pino 1 | I/O — User I/O pin (bank 1) |
| Pino 2 | I/O — User I/O pin (bank 1) |
| Pino 3 | I/O — User I/O pin (bank 1) |
| Pino 4 | I/O — User I/O pin (bank 1) |
| Pino 5 | I/O — User I/O pin (bank 1) |
| Pino 6 | I/O — User I/O pin (bank 1) |
| Pino 7 | I/O — User I/O pin (bank 1) |
| Pino 8 | I/O — User I/O pin (bank 1) |
| Pino 9 | I/O — User I/O pin (bank 1) |
| Pino 10 | I/O — User I/O pin (bank 1) |
| Pino 11 | GND — Ground |
| Pino 12 | I/O — User I/O pin (bank 1) |
| Pino 13 | I/O — User I/O pin (bank 1) |
| Pino 14 | I/O — User I/O pin (bank 1) |
| Pino 15 | I/O — User I/O pin (bank 1) |
| Pino 16 | I/O — User I/O pin (bank 1) |
| Pino 17 | I/O — User I/O pin (bank 1) |
| Pino 18 | I/O — User I/O pin (bank 1) |
| Pino 19 | I/O — User I/O pin (bank 1) |
| Pino 20 | I/O — User I/O pin (bank 1) |
| Pino 21 | I/O — User I/O pin (bank 1) |
| Pino 22 | VCCINT — Core supply voltage (3.3 V) |
| Pino 23 | I/O — User I/O pin (bank 1) |
| Pino 24 | GND — Ground |
| Pino 25 | I/O — User I/O pin (bank 2) |
| Pino 26 | I/O — User I/O pin (bank 2) |
| Pino 27 | I/O — User I/O pin (bank 2) |
| Pino 28 | I/O — User I/O pin (bank 2) |
| Pino 29 | I/O — User I/O pin (bank 2) |
| Pino 30 | I/O — User I/O pin (bank 2) |
| Pino 31 | I/O — User I/O pin (bank 2) |
| Pino 32 | I/O — User I/O pin (bank 2) |
| Pino 33 | I/O — User I/O pin (bank 2) |
| Pino 34 | I/O — User I/O pin (bank 2) |
| Pino 35 | I/O — User I/O pin (bank 2) |
| Pino 36 | I/O — User I/O pin (bank 2) |
| Pino 37 | I/O — User I/O pin (bank 2) |
| Pino 38 | I/O — User I/O pin (bank 2) |
| Pino 39 | I/O — User I/O pin (bank 2) |
| Pino 40 | I/O — User I/O pin (bank 2) |
| Pino 41 | GND — Ground |
| Pino 42 | I/O — User I/O pin (bank 2) |
| Pino 43 | I/O — User I/O pin (bank 2) |
| Pino 44 | I/O — User I/O pin (bank 2) |
| Pino 45 | I/O — User I/O pin (bank 2) |
| Pino 46 | I/O — User I/O pin (bank 2) |
| Pino 47 | I/O — User I/O pin (bank 2) |
| Pino 48 | I/O — User I/O pin (bank 2) |
| Pino 49 | I/O — User I/O pin (bank 2) |
| Pino 50 | I/O — User I/O pin (bank 2) |
| Pino 51 | TDI — JTAG Test Data In |
| Pino 52 | TMS — JTAG Test Mode Select |
| Pino 53 | TCK — JTAG Test Clock |
| Pino 54 | GND — Ground |
| Pino 55 | I/O — User I/O pin (bank 2) |
| Pino 56 | I/O — User I/O pin (bank 2) |
| Pino 57 | I/O — User I/O pin (bank 2) |
| Pino 58 | I/O — User I/O pin (bank 3) |
| Pino 59 | I/O — User I/O pin (bank 3) |
| Pino 60 | I/O — User I/O pin (bank 3) |
| Pino 61 | I/O — User I/O pin (bank 3) |
| Pino 62 | I/O — User I/O pin (bank 3) |
| Pino 63 | I/O — User I/O pin (bank 3) |
| Pino 64 | I/O — User I/O pin (bank 3) |
| Pino 65 | I/O — User I/O pin (bank 3) |
| Pino 66 | I/O — User I/O pin (bank 3) |
| Pino 67 | I/O — User I/O pin (bank 3) |
| Pino 68 | I/O — User I/O pin (bank 3) |
| Pino 69 | I/O — User I/O pin (bank 3) |
| Pino 70 | I/O — User I/O pin (bank 3) |
| Pino 71 | I/O — User I/O pin (bank 3) |
| Pino 72 | VCCIO — I/O supply voltage (3.3 V) |
| Pino 73 | I/O — User I/O pin (bank 3) |
| Pino 74 | GND — Ground |
| Pino 75 | I/O — User I/O pin (bank 3) |
| Pino 76 | I/O — User I/O pin (bank 3) |
| Pino 77 | I/O — User I/O pin (bank 3) |
| Pino 78 | I/O — User I/O pin (bank 4) |
| Pino 79 | I/O — User I/O pin (bank 4) |
| Pino 80 | I/O — User I/O pin (bank 4) |
| Pino 81 | I/O — User I/O pin (bank 4) |
| Pino 82 | I/O — User I/O pin (bank 4) |
| Pino 83 | I/O — User I/O pin (bank 4) |
| Pino 84 | I/O — User I/O pin (bank 4) |
| Pino 85 | I/O — User I/O pin (bank 4) |
| Pino 86 | I/O — User I/O pin (bank 4) |
| Pino 87 | I/O — User I/O pin (bank 4) |
| Pino 88 | I/O — User I/O pin (bank 4) |
| Pino 89 | I/O — User I/O pin (bank 4) |
| Pino 90 | I/O — User I/O pin (bank 4) |
| Pino 91 | I/O — User I/O pin (bank 4) |
| Pino 92 | I/O — User I/O pin (bank 4) |
| Pino 93 | GND — Ground |
| Pino 94 | I/O — User I/O pin (bank 4) |
| Pino 95 | I/O — User I/O pin (bank 4) |
| Pino 96 | I/O — User I/O pin (bank 4) |
| Pino 97 | I/O — User I/O pin (bank 4) |
| Pino 98 | TDO — JTAG Test Data Out |
| Pino 99 | I/O — User I/O pin (bank 4) |
| Pino 100 | I/O — User I/O pin (bank 4) |
Aplicações típicas
EPM7256AETC100-7 é adequado para 6 aplicaçãos: PCI Bus Interface Bridge, Address Decoding & Chip-Select Generation, Industrial State-Machine Controller, Power-Up Sequencing & Reset Distribution, Peripheral Glue Logic Replacement, Legacy System Modernization.
PCI Bus Interface Bridge
The EPM7256AETC100-7's 256 macrocells and 84 user I/Os provide ample capacity to implement a 32-bit PCI target interface with parity generation, address decoding, and command/byte-enable logic. Its 7.5 ns tPD supports the 33 MHz PCI clock with comfortable setup/hold margin, while the non-volatile EEPROM configuration eliminates the FPGA configuration delay that would violate PCI bus-power-up timing. The JTAG ISP interface enables field firmware updates without board removal.
Recomendado
Address Decoding & Chip-Select Generation
With 256 macrocells and 5,000 usable gates, the EPM7256AETC100-7 can decode multi-bank memory maps and generate chip-select signals for an entire microcontroller-based system. The deterministic 7.5 ns propagation delay ensures that chip-selects arrive ahead of the memory access cycle, preventing bus contention. The 84 I/Os support up to 30+ chip-select outputs plus address/data passthrough, and the JTAG ISP allows last-minute memory map adjustments during prototype bring-up.
Recomendado
Industrial State-Machine Controller
The EPM7256AETC100-7 is ideal for implementing complex multi-state control machines in industrial automation. Its 256 macrocells support state machines with 16-32 states plus associated timing/counter logic, while the 126.6 MHz internal frequency enables fast cycle times. The non-volatile EEPROM ensures the controller starts in a defined state on every power-up - critical for safety interlocks. For -40C to +85C industrial environments, the EPM7256AETI100-7 industrial-temp variant provides the same logic with extended temperature range.
Recomendado
Power-Up Sequencing & Reset Distribution
The MAX 7000A CPLD powers up with all I/Os tri-stated and configuration loaded in microseconds - faster than any FPGA - making the EPM7256AETC100-7 ideal for power-up sequencing in multi-rail systems. Its 84 I/Os support sequencing of 20+ voltage rails with programmable delays implemented in macrocell counters. The non-volatile EEPROM eliminates the need for external boot PROMs, simplifying BOM and reducing board area compared to FPGA-based solutions.
Recomendado
Peripheral Glue Logic Replacement
The EPM7256AETC100-7 replaces 5-10 discrete 74-series logic chips with a single programmable device, reducing PCB area and BOM cost. Its 256 macrocells can implement latches, multiplexers, encoders, and bus transceivers in one package, while design changes require only a JTAG re-flash rather than board respins. The 7.5 ns tPD matches 74F-series logic timing, ensuring transparent drop-in replacement for legacy glue logic.
Recomendado
Legacy System Modernization
When EOL notices hit legacy 5-V GAL/PAL designs, the EPM7256AETC100-7 provides a 3.3-V programmable alternative with comparable timing and far greater logic density. Its JTAG ISP allows in-circuit reprogramming for last-minute logic fixes, while the non-volatile EEPROM maintains the deterministic power-up behavior expected in aerospace and defense legacy systems. The commercial temperature grade suits most indoor industrial retrofits.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPM7256AETC100-7 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPM7256AETC100-10N | EPM7256AETC100-7N | EPM7256AETI100-7 | EPM7256AETC100-5N |
|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | TQFP-100 | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| Pin-to-Pin Delay (tPD) | 7.5 ns | 10 ns (-33%) | 7.5 ns (identical) | 7.5 ns (identical) | 5 ns (+33%) |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| Core Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| User I/Os | 84 | 84 | 84 | 84 | 84 |
| Programming Interface | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principais diferenciais
- Faster 7.5 ns speed grade versus -10 variant (vs EPM7256AETC100-10N)
- Commercial temperature grade available at lower cost (vs EPM7256AETI100-7)
- 256 macrocells with 84 user I/Os in TQFP-100 (vs EPM7256AETC100-5N)
Notas de projeto
The EPM7256AETC100-7 requires a stable 3.3 V supply on VCCINT (pin 22) and VCCIO (pin 72). Place 0.1 uF decoupling capacitors within 3 mm of each VCC pin and a bulk 10 uF tantalum or ceramic capacitor near the package. According to the MAX 7000A datasheet, inrush current during ISP programming can reach 200 mA peak - ensure the 3.3 V regulator can supply this transient. Add a power-on reset supervisor if the host system does not provide clean POR signaling.
Route JTAG signals (TCK, TMS, TDI, TDO on pins 51-53, 98) in a single daisy-chain with 10 kohm pull-ups on TCK/TMS/TDI for reliable boundary-scan operation. Keep JTAG trace lengths under 100 mm and avoid routing parallel to clock or switching signals. Place a 4-pin 0.1-inch JTAG header on the board edge for programming access. The 84 user I/Os can be assigned to any function - use Quartus pin planner to lock assignments and reserve unused pins as outputs driving low.
Do not confuse the EPM7256AETC100-7 with the EPM7256AETI100-7 - the latter is industrial temperature grade and costs more. Verify both voltage (3.3 V vs 5 V) and temperature grade (C = commercial vs I = industrial) before PCB assembly, as the suffix letter indicates the temperature range. When migrating designs to modern parts, note that the MAX 7000A is obsolete - consider the MAX II EPM240T100C5N or MAX V 5M160ZE64C5N for new designs, but verify JTAG and pinout compatibility.
Informações de conformidade
Compliance status not explicitly stated in verified web data. The -7N suffix variants are typically lead-free/Pb-free, but the base -7 part may contain lead finishes. For new designs requiring RoHS, choose EPM7256AETC100-7N. Part is classified obsolete by Intel.
