EPM7256AETC144-5N - 256-Macrocell MAX 7000A CPLD | Altera | TQFP-144
N.º da peça: EPM7256AETC144-5N ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.95 | $9.950,00 |
EPM7256AETC144-5N Visão geral
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style macrocell arrays with a central interconnect fabric. CPLDs sit between small SPLDs and large FPGAs in the programmable logic hierarchy, offering deterministic timing, instant-on operation from on-chip EEPROM, and higher I/O count than SPLDs without the configuration overhead of SRAM-based FPGAs. They are widely used for I/O expansion, bus interface glue logic, address decoding, and state-machine controllers in cost-sensitive designs.
Key features of the EPM7256AETC144-5N include 36 user I/Os (per the Mouser listing) or 84 user I/Os (per DigChip), 144 pins total, in-system programmability (ISP) via JTAG, 3.3 V core operation with 5 V-tolerant I/O on most members of the family, and four pin-to-pin delay grades inside the MAX 7000A series. The '5N' suffix denotes the -5 speed grade and lead-free / Pb-free packaging. The device supports multi-voltage operation on its I/O banks through dedicated VCCINT and VCCIO pins, allowing mixed-voltage interfacing between 3.3 V, 2.5 V, and 1.8 V rails without external level shifters.
Typical applications include bus-interface bridging, peripheral control in embedded systems, address decoding and chip-select generation in microcontroller designs, high-speed state-machine controllers, and industrial control systems. The deterministic 4.5 ns tPD simplifies timing closure where ASIC-like predictability is required.
When designing with the EPM7256AETC144-5N, observe the recommended decoupling scheme (one 0.1 microfarad ceramic capacitor per VCC pin) and provide a clean JTAG chain. The -5N suffix is the slowest speed grade in the family; faster -7 and -10 grades are also available in the same TQFP-144 footprint for timing-critical paths.
Alternativas drop-in para EPM7256AETC144-5N — 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 EPM7256AETC144-5N (mesmo formato e footprint) — diferindo em Package, Operating Temperature, Programming Interface, Maximum Internal Frequency, User I/Os.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPM7256AETC144-7N
✅ Drop-In✓ Em estoque
$29.75 / unidade
Ver ficha técnica →EPM7256AETC144-10N
✅ Drop-In✓ Em estoque
$15.95 / unidade
Ver ficha técnica →EPM7256AETI144-7N
✅ Drop-In✓ Em estoque
$29.81 / unidade
Ver ficha técnica →EPM7256AEQC208-5N
✅ Drop-In✓ Em estoque
$11.5 / unidade
Ver ficha técnica →EPM7128AETC144-7N
✅ Drop-In✓ Em estoque
$39.82 / unidade
Ver ficha técnica →EPM7256AETC144-5N Classificações máximas e características elétricas
| Family | MAX 7000A |
| Logic Family | CMOS |
| Usable Gates | 5,000 |
| Macro Cells | 256 |
| Logic Blocks | 16 |
| User I/Os (Mouser listing) | 36 |
| User I/Os (DigChip listing) | 84 |
| Pin-to-Pin Propagation Delay (tPD) | 4.5 ns |
| Maximum Internal Frequency | 227.3 MHz |
| Counter Speed | 172.4 MHz |
| Supply Voltage (VCCINT) | 3.3 V |
| Program Memory Type | EEPROM (non-volatile) |
| In-System Programmability | Yes (JTAG) |
| Encapsulamento | TQFP-144 (Plastic Thin Quad Flat Pack) |
| Lead-Free / RoHS | Yes (N suffix) |
| Speed Grade | -5 |
Configuração de pinos do EPM7256AETC144-5N
| Pino 1 | I/O — User I/O pin (bank 1) |
| Pino 2 | I/O — User I/O pin (bank 1) |
| Pino 3 | GCLK1 — Global clock input 1 |
| Pino 4 | I/O — User I/O pin (bank 1) |
| Pino 5 | I/O — User I/O pin (bank 1) |
| Pino 6 | VCCINT — Core supply voltage (3.3 V) |
| Pino 7 | I/O — User I/O pin (bank 1) |
| Pino 8 | GND — Ground |
| Pino 9 | I/O — User I/O pin (bank 1) |
| Pino 10 | I/O — User I/O pin (bank 1) |
| Pino 11 | I/O — User I/O pin (bank 1) |
| Pino 12 | I/O — User I/O pin (bank 1) |
| Pino 13 | I/O — User I/O pin (bank 2) |
| Pino 14 | I/O — User I/O pin (bank 2) |
| Pino 15 | GCLK2 — Global clock input 2 |
| Pino 16 | I/O — User I/O pin (bank 2) |
| Pino 17 | I/O — User I/O pin (bank 2) |
| Pino 18 | VCCIO1 — I/O bank 1 supply voltage |
| Pino 19 | I/O — User I/O pin (bank 2) |
| Pino 20 | I/O — User I/O pin (bank 2) |
| Pino 21 | I/O — User I/O pin (bank 2) |
| Pino 22 | I/O — User I/O pin (bank 2) |
| Pino 23 | GND — Ground |
| Pino 24 | I/O — User I/O pin (bank 2) |
| Pino 25 | I/O — User I/O pin (bank 2) |
| Pino 26 | I/O — User I/O pin (bank 2) |
| Pino 27 | OE1 — Global output enable 1 (active low) |
| Pino 28 | I/O — User I/O pin (bank 2) |
| Pino 29 | I/O — User I/O pin (bank 2) |
| Pino 30 | VCCINT — Core supply voltage (3.3 V) |
| Pino 31 | I/O — User I/O pin (bank 2) |
| Pino 32 | GCLK3 — Global clock input 3 |
| Pino 33 | I/O — User I/O pin (bank 2) |
| Pino 34 | I/O — User I/O pin (bank 3) |
| Pino 35 | I/O — User I/O pin (bank 3) |
| Pino 36 | I/O — User I/O pin (bank 3) |
| Pino 37 | GND — Ground |
| Pino 38 | I/O — User I/O pin (bank 3) |
| Pino 39 | I/O — User I/O pin (bank 3) |
| Pino 40 | I/O — User I/O pin (bank 3) |
| Pino 41 | I/O — User I/O pin (bank 3) |
| Pino 42 | VCCIO2 — I/O bank 2 supply voltage |
| Pino 43 | I/O — User I/O pin (bank 3) |
| Pino 44 | GCLK4 — Global clock input 4 |
| Pino 45 | I/O — User I/O pin (bank 3) |
| Pino 46 | I/O — User I/O pin (bank 3) |
| Pino 47 | I/O — User I/O pin (bank 3) |
| Pino 48 | I/O — User I/O pin (bank 3) |
| Pino 49 | OE2 — Global output enable 2 (active low) |
| Pino 50 | I/O — User I/O pin (bank 3) |
| Pino 51 | I/O — User I/O pin (bank 3) |
| Pino 52 | VCCINT — Core supply voltage (3.3 V) |
| Pino 53 | I/O — User I/O pin (bank 3) |
| Pino 54 | I/O — User I/O pin (bank 3) |
| Pino 55 | I/O — User I/O pin (bank 4) |
| Pino 56 | I/O — User I/O pin (bank 4) |
| Pino 57 | GND — Ground |
| Pino 58 | I/O — User I/O pin (bank 4) |
| Pino 59 | I/O — User I/O pin (bank 4) |
| Pino 60 | I/O — User I/O pin (bank 4) |
| Pino 61 | I/O — User I/O pin (bank 4) |
| Pino 62 | I/O — User I/O pin (bank 4) |
| Pino 63 | I/O — User I/O pin (bank 4) |
| Pino 64 | VCCIO3 — I/O bank 3 supply voltage |
| Pino 65 | I/O — User I/O pin (bank 4) |
| Pino 66 | I/O — User I/O pin (bank 4) |
| Pino 67 | I/O — User I/O pin (bank 4) |
| Pino 68 | I/O — User I/O pin (bank 4) |
| Pino 69 | I/O — User I/O pin (bank 4) |
| Pino 70 | I/O — User I/O pin (bank 4) |
| Pino 71 | GND — Ground |
| Pino 72 | I/O — User I/O pin (bank 4) |
| Pino 73 | I/O — User I/O pin (bank 4) |
| Pino 74 | TDI — JTAG Test Data In |
| Pino 75 | TMS — JTAG Test Mode Select |
| Pino 76 | TCK — JTAG Test Clock |
| Pino 77 | VCCINT — Core supply voltage (3.3 V) |
| 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 | VCCIO4 — I/O bank 4 supply voltage |
| 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 | GND — Ground |
| Pino 92 | I/O — User I/O pin (bank 4) |
| Pino 93 | I/O — User I/O pin (bank 4) |
| Pino 94 | TDO — JTAG Test Data Out |
| Pino 95 | I/O — User I/O pin (bank 4) |
| Pino 96 | I/O — User I/O pin (bank 4) |
| Pino 97 | VCCINT — Core supply voltage (3.3 V) |
| Pino 98 | I/O — User I/O pin (bank 4) |
| Pino 99 | I/O — User I/O pin (bank 4) |
| Pino 100 | I/O — User I/O pin (bank 4) |
| Pino 101 | I/O — User I/O pin (bank 4) |
| Pino 102 | I/O — User I/O pin (bank 4) |
| Pino 103 | I/O — User I/O pin (bank 4) |
| Pino 104 | VCCIO1 — I/O bank 1 supply voltage (alternate pin) |
| Pino 105 | I/O — User I/O pin (bank 1) |
| Pino 106 | I/O — User I/O pin (bank 1) |
| Pino 107 | I/O — User I/O pin (bank 1) |
| Pino 108 | I/O — User I/O pin (bank 1) |
| Pino 109 | I/O — User I/O pin (bank 1) |
| Pino 110 | I/O — User I/O pin (bank 1) |
| Pino 111 | GND — Ground |
| Pino 112 | I/O — User I/O pin (bank 1) |
| Pino 113 | I/O — User I/O pin (bank 1) |
| Pino 114 | I/O — User I/O pin (bank 1) |
| Pino 115 | I/O — User I/O pin (bank 1) |
| Pino 116 | I/O — User I/O pin (bank 1) |
| Pino 117 | I/O — User I/O pin (bank 1) |
| Pino 118 | VCCINT — Core supply voltage (3.3 V) |
| Pino 119 | I/O — User I/O pin (bank 1) |
| Pino 120 | I/O — User I/O pin (bank 1) |
| Pino 121 | I/O — User I/O pin (bank 1) |
| Pino 122 | I/O — User I/O pin (bank 1) |
| Pino 123 | I/O — User I/O pin (bank 1) |
| Pino 124 | I/O — User I/O pin (bank 1) |
| Pino 125 | I/O — User I/O pin (bank 1) |
| Pino 126 | VCCIO2 — I/O bank 2 supply voltage (alternate pin) |
| Pino 127 | I/O — User I/O pin (bank 2) |
| Pino 128 | I/O — User I/O pin (bank 2) |
| Pino 129 | I/O — User I/O pin (bank 2) |
| Pino 130 | I/O — User I/O pin (bank 2) |
| Pino 131 | I/O — User I/O pin (bank 2) |
| Pino 132 | GND — Ground |
| Pino 133 | I/O — User I/O pin (bank 2) |
| Pino 134 | I/O — User I/O pin (bank 2) |
| Pino 135 | I/O — User I/O pin (bank 2) |
| Pino 136 | I/O — User I/O pin (bank 2) |
| Pino 137 | I/O — User I/O pin (bank 2) |
| Pino 138 | I/O — User I/O pin (bank 2) |
| Pino 139 | VCCINT — Core supply voltage (3.3 V) |
| Pino 140 | I/O — User I/O pin (bank 2) |
| Pino 141 | I/O — User I/O pin (bank 2) |
| Pino 142 | I/O — User I/O pin (bank 2) |
| Pino 143 | I/O — User I/O pin (bank 2) |
| Pino 144 | I/O — User I/O pin (bank 2) |
Aplicações típicas
EPM7256AETC144-5N é adequado para 6 aplicaçãos: Bus Interface Bridging, Address Decoding and Chip-Select Generation, Industrial Control and Factory Automation, Peripheral I/O Expansion, Legacy Microprocessor System Integration, Test and Measurement Equipment.
Bus Interface Bridging
The EPM7256AETC144-5N's 256 macro cells and 4.5 ns tPD make it ideal for bridging between legacy 8/16-bit microprocessor buses and modern 32-bit peripherals. The deterministic timing of the MAX 7000A architecture, combined with multi-voltage I/O banks (VCCIO at 1.8/2.5/3.3 V), allows direct connection between, for example, an 8051-style 5 V-tolerant interface and a 3.3 V ARM Cortex-M3 bus without external level shifters. With up to 84 user I/Os, the device can fan out address, data, and control signals to multiple peripherals while meeting ISA-style timing budgets. The 4.5 ns propagation delay fits comfortably within a 33 MHz bus cycle.
Recomendado
Address Decoding and Chip-Select Generation
The EPM7256AETC144-5N is widely used to generate chip-select signals, address-strobe timing, and bank-switch windows for memory and peripheral arrays. Its 256 macro cells easily handle decoding of a 24-bit address space into 16 or more chip-select outputs, each individually programmable with wait-state insertion. The 4.5 ns tPD ensures clean, glitch-free outputs that meet synchronous memory tCO requirements. Because the MAX 7000A architecture is non-volatile (EEPROM), chip-select logic comes up instantly on power-on with no configuration delay, which is critical in boot-ROM and reset-path designs where the MCU waits for peripherals to be ready.
Recomendado
Industrial Control and Factory Automation
The EPM7256AETC144-5N serves as a glue-logic and state-machine controller in industrial PLCs, motor drives, and process-control instruments. Its 256 macro cells can implement multiple parallel state machines (one per axis) plus encoder-interface logic, while the JTAG port allows in-system firmware updates during commissioning. For harsh environments, the industrial-grade variant EPM7256AETI144-7N offers -40C to +85C operation in the same TQFP-144 footprint. The CMOS EEPROM process delivers high noise immunity suitable for 24 V industrial bus environments with proper board-level filtering.
Recomendado
Peripheral I/O Expansion
The EPM7256AETC144-5N can be used to expand the limited I/O count of microcontrollers and DSPs by offloading functions like PWM generation, quadrature decoding, and LED multiplexing. Its 16 LABs (logic array blocks) operate in parallel, so 16 independent PWM channels or 16 quadrature decoders can run simultaneously without contention. The MAX 7000A's deterministic 4.5 ns tPD allows tight control-loop timing in motor-control and robotics applications. Multi-voltage I/O banks let the same CPLD interface directly with 1.8 V DSPs and 3.3 V / 5 V sensors without external buffers.
Recomendado
Legacy Microprocessor System Integration
Designers maintaining legacy 68k, x86, or MIPS-based systems often reach for the EPM7256AETC144-5N as a drop-in replacement for aging PAL/GAL-based glue logic. With 256 macro cells, a single device can replace an entire board of discrete programmable arrays, reducing component count and improving reliability. The EEPROM programming is one-time programmable (with JTAG re-programmability), avoiding the obsolescence risk of older UV-EPROM parts. The MAX 7000A family has been in continuous production since the late 1990s, ensuring long-term availability for industrial and aerospace programs with 10+ year lifecycles.
Recomendado
Test and Measurement Equipment
The EPM7256AETC144-5N is well suited to test-and-measurement front-ends, where its 256 macro cells can implement timing generators, pulse-train controllers, and protocol decoders for instruments such as logic analyzers and bench-top protocol testers. The JTAG-supported boundary-scan (IEEE 1149.1) lets the CPLD assist in board-level interconnect testing, while the deterministic 4.5 ns tPD simplifies generation of precise timing edges. Multi-voltage I/O banks allow direct interfacing with both 1.8 V modern FPGAs and legacy 5 V measurement circuitry on the same board.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPM7256AETC144-5N — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPM7256AETC144-7N | EPM7256AETC144-10N | EPM7256AETI144-7N | EPM7256AEQC208-5N | EPM7128AETC144-7N |
|---|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | TQFP-144 | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-208 - different | TQFP-144 - same |
| Family | MAX 7000A | MAX 7000A | MAX 7000A | MAX 7000A | MAX 7000AE | MAX 7000A |
| Macro Cells | 256 | 256 | 256 | 256 | 256 | 128 |
| Speed Grade (tPD) | -5 (4.5 ns) | -7 (6.0 ns) | -10 (10.0 ns) | -7 (6.0 ns) | -5 (4.5 ns) | -7 (7.5 ns) |
| Counter Frequency | 227.3 MHz | 172.4 MHz | 125 MHz | 172.4 MHz | 227.3 MHz | 125 MHz |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | Commercial (0C to +70C) | Commercial | Commercial | Industrial (-40C to +85C) | Commercial | Commercial |
| JTAG / ISP | Yes | Yes | Yes | Yes | Yes | Yes |
Principais diferenciais
- Densest MAX 7000A device at -5 speed grade in TQFP-144 (vs EPM7256AETC144-7N)
- 256 macro cells - 2x the logic density (vs EPM7128AETC144-7N)
- Multi-voltage I/O banks for direct mixed-rail interfacing (vs EPM7192EQC160-20)
Notas de projeto
Each EPM7256AETC144-5N VCCINT pin must be decoupled with a 0.1 microfarad X7R ceramic capacitor placed within 5 mm of the package pin. The MAX 7000A datasheet recommends at least four VCCINT/GND pairs distributed around the TQFP-144 perimeter. Use a power plane for VCCINT (3.3 V) and a separate ground plane, with vias placed every two signal traces to maintain low-inductance return paths.
Route the four global clock inputs (GCLK1 to GCLK4) and JTAG pins (TCK, TMS, TDI, TDO) with controlled impedance and minimal stubs. Avoid routing clock signals adjacent to high-edge-rate I/O to prevent crosstalk. The dedicated OE1 and OE2 pins should be tied to logic low through a 10 kilohm resistor if not used, to prevent floating enable glitches during power-up.
Do not confuse the EPM7256AETC144-5N (commercial temperature, -5 speed grade) with the EPM7256AETI144-7N (industrial temperature, -7 speed grade); they share the TQFP-144 footprint but are NOT timing-identical. Estimated timing margin: the -7 grade is approximately 33% slower than the -5 grade. Always verify your design's worst-case tPD budget against the chosen speed grade before substitution. Also confirm VCCIO bank voltages match the driven peripherals, or use external series resistors for voltage mismatch.
Informações de conformidade
Lead-free (Pb-free) per the N suffix; RoHS and REACH compliant per Altera/Intel material declarations. AEC-Q100 not applicable for this commercial-grade CPLD. Halogen-free status not explicitly stated in available data - verify with manufacturer for halogen-free applications.
