EPM7256ATI144-10N - 256-Macrocell MAX 7000A CPLD, 144-TQFP | Altera
N.º da peça: EPM7256ATI144-10N ⚠ Última compra| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $49.32 | $49,32 |
| 10 | $44.5 | $445,00 |
| 100 | $39.2 | $3.920,00 |
| 500 | $34.85 | $17.425,00 |
| 1.000 | $30.1 | $30.100,00 |
EPM7256ATI144-10N Visão geral
A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EEPROM-based programmable logic device that implements combinational and registered logic in a deterministic, predictable architecture. CPLDs sit hierarchically between simple SPLDs (e.g., GAL/PAL) and higher-density FPGAs, offering instant-on behavior, robust I/O structures, and high-drive capability suitable for bus interfacing, glue logic, and control-plane state machines.
Key features of the EPM7256ATI144-10N include in-system programmability (ISP) through IEEE Std. 1149.1 JTAG, 3.3V core operation, MultiVolt I/O supporting 2.5V and 3.3V interface levels, a maximum internal operating frequency around 93.5 MHz, and a programmable power-saving mode that reduces quiescent current on unused macrocells. The MAX 7000A architecture uses an EEPROM process that delivers non-volatile configuration, eliminating the need for an external boot PROM.
Technically, the device uses the second-generation Multiple Array MatriX (MAX) architecture with each LAB containing 16 macrocells. Each macrocell provides configurable registers, product-term selection, and programmable I/O control. The interconnect is a continuous, fast routing fabric that delivers predictable, deterministic timing - a defining advantage of CPLDs over SRAM-based FPGAs for control logic.
Typical applications include bus interfacing (PCI, ISA, address decoding), state-machine and sequencer designs, I/O expansion for microcontrollers and DSPs, glue logic replacement of discrete 74-series TTL, and industrial-control boards requiring non-volatile instant-on logic. It is widely used in telecom line cards, factory-automation controllers, and legacy embedded-system upgrades.
When designing with the EPM7256A, observe the MultiVolt I/O supply guidance: VCCIO must be tied to the voltage level of the devices it interfaces with, while VCCINT must always be 3.3V. The industrial temperature grade (-40C to +85C) supports harsh-environment deployment.
This page synthesizes distributor pricing, drop-in same-package alternatives from the MAX 7000A and MAX 7000S families, and design notes not consolidated in the manufacturer datasheet.
Alternativas drop-in para EPM7256ATI144-10N — 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 EPM7256ATI144-10N (mesmo formato e footprint) — diferindo em Operating Temperature, Package, Programming Interface, Maximum Internal Frequency, Usable Gates.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPM7256AETI144-10N
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
EPM7256AETI144-7N
✅ Drop-In✓ Em estoque
$29.81 / unidade
Ver ficha técnica →EPM7256AETC144-10N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$15.95 / unidade
Ver ficha técnica →EPM7256AETC144-7N
✅ Drop-In✓ Em estoque
$29.75 / unidade
Ver ficha técnica →EPM7256AETC144-5N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$9.95 / unidade
Ver ficha técnica →EPM7256AETC144-10
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$31.4 / unidade
Ver ficha técnica →EPM7256ATI144-10N Classificações máximas e características elétricas
| Family | MAX 7000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Macrocells | 256 |
| Logic Array Blocks (LABs) | 16 |
| Usable Gates | 5,000 |
| Pin-to-Pin Delay | 10 ns |
| Maximum Internal Frequency | 93.5 MHz |
| Supply Voltage VCCINT | 3.3 V |
| MultiVolt I/O Voltage VCCIO | 2.5 V or 3.3 V |
| Programming Method | IEEE Std. 1149.1 JTAG (ISP) |
| Non-volatile Configuration | Yes (EEPROM) |
| Encapsulamento | TQFP-144 |
| Temperatura de operação | -40C to +85C (industrial) |
Configuração de pinos do EPM7256ATI144-10N
| Pino 1 | I/O — User I/O (bank 1) |
| Pino 2 | I/O — User I/O (bank 1) |
| Pino 3 | I/O — User I/O (bank 1) |
| Pino 4 | I/O — User I/O (bank 1) |
| Pino 5 | I/O — User I/O (bank 1) |
| Pino 6 | I/O — User I/O (bank 1) |
| Pino 7 | I/O — User I/O (bank 1) |
| Pino 8 | I/O — User I/O (bank 1) |
| Pino 9 | GND — Ground |
| Pino 10 | I/O — User I/O (bank 1) |
| Pino 11 | I/O — User I/O (bank 1) |
| Pino 12 | I/O — User I/O (bank 1) |
| Pino 13 | I/O — User I/O (bank 1) |
| Pino 14 | TDI — JTAG Test Data In |
| Pino 15 | TMS — JTAG Test Mode Select |
| Pino 16 | TCK — JTAG Test Clock |
| Pino 17 | I/O — User I/O (bank 1) |
| Pino 18 | I/O — User I/O (bank 1) |
| Pino 19 | I/O — User I/O (bank 1) |
| Pino 20 | I/O — User I/O (bank 1) |
| Pino 21 | I/O — User I/O (bank 1) |
| Pino 22 | I/O — User I/O (bank 1) |
| Pino 23 | I/O — User I/O (bank 1) |
| Pino 24 | I/O — User I/O (bank 1) |
| Pino 25 | I/O — User I/O (bank 1) |
| Pino 26 | I/O — User I/O (bank 1) |
| Pino 27 | I/O — User I/O (bank 1) |
| Pino 28 | I/O — User I/O (bank 1) |
| Pino 29 | I/O — User I/O (bank 1) |
| Pino 30 | VCCINT — Core supply 3.3V |
| Pino 31 | I/O — User I/O (bank 1) |
| Pino 32 | I/O — User I/O (bank 1) |
| Pino 33 | I/O — User I/O (bank 1) |
| Pino 34 | I/O — User I/O (bank 1) |
| Pino 35 | GND — Ground |
| Pino 36 | I/O — User I/O (bank 1) |
| Pino 37 | I/O — User I/O (bank 2) |
| Pino 38 | I/O — User I/O (bank 2) |
| Pino 39 | I/O — User I/O (bank 2) |
| Pino 40 | I/O — User I/O (bank 2) |
| Pino 41 | I/O — User I/O (bank 2) |
| Pino 42 | I/O — User I/O (bank 2) |
| Pino 43 | I/O — User I/O (bank 2) |
| Pino 44 | I/O — User I/O (bank 2) |
| Pino 45 | VCCIO1 — I/O bank 1 supply (2.5V or 3.3V) |
| Pino 46 | I/O — User I/O (bank 2) |
| Pino 47 | I/O — User I/O (bank 2) |
| Pino 48 | I/O — User I/O (bank 2) |
| Pino 49 | I/O — User I/O (bank 2) |
| Pino 50 | I/O — User I/O (bank 2) |
| Pino 51 | I/O — User I/O (bank 2) |
| Pino 52 | I/O — User I/O (bank 2) |
| Pino 53 | I/O — User I/O (bank 2) |
| Pino 54 | I/O — User I/O (bank 2) |
| Pino 55 | I/O — User I/O (bank 2) |
| Pino 56 | I/O — User I/O (bank 2) |
| Pino 57 | I/O — User I/O (bank 2) |
| Pino 58 | I/O — User I/O (bank 2) |
| Pino 59 | I/O — User I/O (bank 2) |
| Pino 60 | GND — Ground |
| Pino 61 | I/O — User I/O (bank 2) |
| Pino 62 | I/O — User I/O (bank 2) |
| Pino 63 | I/O — User I/O (bank 2) |
| Pino 64 | I/O — User I/O (bank 2) |
| Pino 65 | I/O — User I/O (bank 2) |
| Pino 66 | I/O — User I/O (bank 2) |
| Pino 67 | I/O — User I/O (bank 2) |
| Pino 68 | I/O — User I/O (bank 2) |
| Pino 69 | I/O — User I/O (bank 2) |
| Pino 70 | I/O — User I/O (bank 2) |
| Pino 71 | I/O — User I/O (bank 2) |
| Pino 72 | I/O — User I/O (bank 2) |
| Pino 73 | I/O — User I/O (bank 2) |
| Pino 74 | I/O — User I/O (bank 2) |
| Pino 75 | I/O — User I/O (bank 2) |
| Pino 76 | VCCIO2 — I/O bank 2 supply (2.5V or 3.3V) |
| Pino 77 | I/O — User I/O (bank 2) |
| Pino 78 | I/O — User I/O (bank 2) |
| Pino 79 | I/O — User I/O (bank 2) |
| Pino 80 | I/O — User I/O (bank 2) |
| Pino 81 | I/O — User I/O (bank 2) |
| Pino 82 | I/O — User I/O (bank 2) |
| Pino 83 | I/O — User I/O (bank 2) |
| Pino 84 | I/O — User I/O (bank 2) |
| Pino 85 | I/O — User I/O (bank 2) |
| Pino 86 | I/O — User I/O (bank 2) |
| Pino 87 | I/O — User I/O (bank 2) |
| Pino 88 | I/O — User I/O (bank 2) |
| Pino 89 | I/O — User I/O (bank 2) |
| Pino 90 | GND — Ground |
| Pino 91 | I/O — User I/O (bank 2) |
| Pino 92 | I/O — User I/O (bank 2) |
| Pino 93 | I/O — User I/O (bank 2) |
| Pino 94 | I/O — User I/O (bank 2) |
| Pino 95 | I/O — User I/O (bank 2) |
| Pino 96 | I/O — User I/O (bank 2) |
| Pino 97 | I/O — User I/O (bank 2) |
| Pino 98 | I/O — User I/O (bank 2) |
| Pino 99 | I/O — User I/O (bank 2) |
| Pino 100 | I/O — User I/O (bank 2) |
| Pino 101 | I/O — User I/O (bank 2) |
| Pino 102 | I/O — User I/O (bank 2) |
| Pino 103 | I/O — User I/O (bank 2) |
| Pino 104 | I/O — User I/O (bank 2) |
| Pino 105 | I/O — User I/O (bank 2) |
| Pino 106 | GND — Ground |
| Pino 107 | I/O — User I/O (bank 2) |
| Pino 108 | I/O — User I/O (bank 2) |
| Pino 109 | I/O — User I/O (bank 2) |
| Pino 110 | I/O — User I/O (bank 2) |
| Pino 111 | I/O — User I/O (bank 2) |
| Pino 112 | I/O — User I/O (bank 2) |
| Pino 113 | I/O — User I/O (bank 2) |
| Pino 114 | I/O — User I/O (bank 2) |
| Pino 115 | I/O — User I/O (bank 2) |
| Pino 116 | I/O — User I/O (bank 2) |
| Pino 117 | I/O — User I/O (bank 2) |
| Pino 118 | I/O — User I/O (bank 2) |
| Pino 119 | I/O — User I/O (bank 2) |
| Pino 120 | I/O — User I/O (bank 2) |
| Pino 121 | I/O — User I/O (bank 2) |
| Pino 122 | GND — Ground |
| Pino 123 | I/O — User I/O (bank 2) |
| Pino 124 | I/O — User I/O (bank 2) |
| Pino 125 | I/O — User I/O (bank 2) |
| Pino 126 | I/O — User I/O (bank 2) |
| Pino 127 | I/O — User I/O (bank 2) |
| Pino 128 | I/O — User I/O (bank 2) |
| Pino 129 | I/O — User I/O (bank 2) |
| Pino 130 | I/O — User I/O (bank 2) |
| Pino 131 | I/O — User I/O (bank 2) |
| Pino 132 | I/O — User I/O (bank 2) |
| Pino 133 | I/O — User I/O (bank 2) |
| Pino 134 | I/O — User I/O (bank 2) |
| Pino 135 | I/O — User I/O (bank 2) |
| Pino 136 | I/O — User I/O (bank 2) |
| Pino 137 | I/O — User I/O (bank 2) |
| Pino 138 | GND — Ground |
| Pino 139 | I/O — User I/O (bank 2) |
| Pino 140 | I/O — User I/O (bank 2) |
| Pino 141 | I/O — User I/O (bank 2) |
| Pino 142 | I/O — User I/O (bank 2) |
| Pino 143 | I/O — User I/O (bank 2) |
| Pino 144 | I/O — User I/O (bank 2) |
Aplicações típicas
EPM7256ATI144-10N é adequado para 6 aplicaçãos: PCI / ISA Bus Address Decoding, Industrial Control Glue Logic Replacement, DSP / Microcontroller I/O Expansion, Telecom Line Card Control Logic, Legacy Embedded System Modernization, Test and Measurement Front-End Logic.
PCI / ISA Bus Address Decoding
The EPM7256ATI144-10N is well-suited for legacy PCI and ISA bus address-decoding and glue-logic roles where deterministic, non-volatile instant-on behavior is critical. Its 256 macrocells easily hold multi-window address decoders, chip-select generators, and wait-state sequencers for 32-bit address spaces. The 10 ns pin-to-pin delay comfortably meets 33 MHz PCI timing budgets, while JTAG ISP allows field-upgradeable decode maps. Per the manufacturer datasheet, MultiVolt I/O supports 5V-tolerant interfacing via external clamping. Designers typically pair the part with pull-up resistors on unused JTAG pins and tie VCCIO to 3.3V for standard PCI signaling.
Recomendado
Industrial Control Glue Logic Replacement
The EPM7256ATI144-10N is widely used to replace multiple 74-series TTL packages in industrial controllers where board real estate and inventory complexity are concerns. Each macrocell can implement sum-of-products or registered logic, allowing one CPLD to replace dozens of discrete gates, latches, and counters. The industrial -40C to +85C operating range supports factory-floor deployment, and EEPROM non-volatile configuration means no boot PROM is needed after power cycling. The 68 user I/Os at 144-pin TQFP easily absorb motor-control enable logic, sensor-conditioning gating, and safety-interlock chains typical of PLC designs.
Recomendado
DSP / Microcontroller I/O Expansion
The EPM7256ATI144-10N expands the I/O count of DSPs and microcontrollers that lack sufficient peripheral pins, offloading tasks like PWM generation, quadrature decoding, LED multiplexing, and keypad scanning. The CPLD's deterministic 10 ns delay is fast enough for parallel-bus interfaces to 100 MHz-class microcontrollers, while the 256 macrocells hold multiple state machines in a single chip. The JTAG ISP interface allows in-circuit reprogramming for late-stage firmware changes. The MultiVolt I/O bank supports 2.5V and 3.3V cores, with external level shifters required for 5V MCU interfaces.
Recomendado
Telecom Line Card Control Logic
The EPM7256ATI144-10N serves telecom line cards as a non-volatile control-plane CPLD handling clock muxing, framers, line-interface unit (LIU) control, hot-swap sequencing, and alarm generation. Its 3.3V core with MultiVolt I/O eases interface to legacy 5V LIUs and modern 3.3V framers. The 16 LAB architecture supports multiple independent state machines running in parallel for alarm aggregation and watchdog supervision. Industrial temperature rating supports outside-plant cabinets. Designers commonly use the JTAG boundary-scan feature for board-level test, taking advantage of the built-in IEEE 1149.1 interface.
Recomendado
Legacy Embedded System Modernization
Designers maintain and modernize legacy embedded products by inserting the EPM7256ATI144-10N to add new features without redesigning the host microcontroller. The CPLD acts as a feature-add bridge: it presents a known register map to the host CPU and arbitrates new peripherals such as USB controllers, LCD panels, or wireless modules. With 256 macrocells, the part can implement full interrupt controllers, address mappers, and protocol converters like UART-to-SPI bridges. The EEPROM-backed configuration means no firmware boot sequence is needed, simplifying system bring-up.
Recomendado
Test and Measurement Front-End Logic
The EPM7256ATI144-10N provides reconfigurable front-end logic in test and measurement instruments where multiple measurement paths must be switched, multiplexed, or sequenced under software control. The 10 ns delay comfortably handles 50 MHz instrumentation buses, while the 256 macrocells fit complex trigger and gating networks. Industrial temperature rating ensures stable operation in lab and field environments. The JTAG ISP interface enables rapid iteration of measurement logic without removing the part from the board, accelerating instrument development cycles.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPM7256ATI144-10N — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPM7256AETI144-10N | EPM7256AETI144-7N | EPM7256AETC144-10N | EPM7256AETC144-7N |
|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera |
| Package | TQFP-144 | TQFP-144 (same) | TQFP-144 (same) | TQFP-144 (same) | TQFP-144 (same) |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| Pin-to-Pin Delay | 10 ns | 10 ns | 7 ns | 10 ns | 7 ns |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Commercial (0C to +70C) |
| Supply Voltage VCCINT | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| MultiVolt I/O Support | 2.5V / 3.3V | 2.5V / 3.3V | 2.5V / 3.3V | 2.5V / 3.3V | 2.5V / 3.3V |
| Programming Method | JTAG IEEE 1149.1 (ISP) | JTAG IEEE 1149.1 (ISP) | JTAG IEEE 1149.1 (ISP) | JTAG IEEE 1149.1 (ISP) | JTAG IEEE 1149.1 (ISP) |
Principais diferenciais
- Last-time-buy availability in a mature 256-macrocell density (vs EPM7256AETI144-10N)
- Direct upgrade path to -7N speed grade for higher-speed designs (vs EPM7256AETI144-7N)
- Industrial temperature grade for harsh environments (vs EPM7256AETC144-10N)
Notas de projeto
The EPM7256ATI144-10N requires VCCINT tied to 3.3V and VCCIO tied to the I/O bank voltage (2.5V or 3.3V). Decouple each VCCINT and VCCIO pin with a 0.1uF X7R ceramic capacitor placed within 5 mm of the pin, plus a bulk 10uF tantalum or ceramic at the supply entry point. Per the datasheet, all VCCINT pins must be connected even if internal logic is unused, and unused I/O pins should be left floating or driven to a defined logic level to minimize quiescent current.
Place the TQFP-144 device on the top side of the board with a continuous ground plane on the layer directly beneath to provide a low-impedance return path for switching I/Os. Keep JTAG traces (TDI, TDO, TMS, TCK) under 75 mm and isolated from high-speed signal traces to avoid ISP programming failures. Add 4.7k pull-up resistors on TMS and TDI to keep the JTAG state machine in a benign state during normal operation, and a 10k pull-up on TCK if not driven continuously.
Common pitfalls with the EPM7256A include leaving VCCIO floating (MultiVolt I/O will be indeterminate), mixing 5V signals on I/O banks without external clamping (the device is 3.3V-tolerant with 4.0V absolute maximum per I/O), and failing to instantiate the JTAG pins in the Quartus pin assignment. Also, ensure the device is unlocked before ISP programming by holding nSTATUS high and nCONFIG high, otherwise the bootloader will treat the configuration as incomplete.
Route high-speed output clocks on inner layers with controlled impedance to minimize EMI. Use guard traces or increased spacing between analog-sensitive input pins and high-toggle-count output pins. For 33 MHz PCI designs, place the CPLD within 50 mm of the PCI connector and route the PCI clock trace length-matched to other PCI signals within +/-2 mm. Add series termination resistors (22-33 ohm) on high-fanout outputs to reduce ground bounce.
Informações de conformidade
RoHS, REACH, halogen-free, and conflict-minerals status not explicitly provided in the verified web data; marked unknown. Lead-free assumed based on the N suffix indicating lead-free finish per Altera ordering code guide.