EPM3256ATI144-10 - MAX 3000A 256-Macrocell 10ns CPLD | Intel
N.º da peça: EPM3256ATI144-10 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
EPM3256ATI144-10 Visão geral
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.
Alternativas drop-in para EPM3256ATI144-10 — 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 EPM3256ATI144-10 (mesmo formato e footprint) — diferindo em Operating Temperature, Package, Propagation Delay (tPD), RoHS Status, JTAG Support.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPM3256ATC144-10N
✅ Drop-In✓ Em estoque
$14.5 / unidade
Ver ficha técnica →EPM3256ATC144-10AA
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$11.6 / unidade
Ver ficha técnica →EPM3256ATC144-10
✅ Drop-In✓ Em estoque
$9.75 / unidade
Ver ficha técnica →EPM3256ATC144-7N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$17.2 / unidade
Ver ficha técnica →EPM3256ATC144-7
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$17.06 / unidade
Ver ficha técnica →EPM3128ATI144-10N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$10.32 / unidade
Ver ficha técnica →EPM3256ATI144-10 Classificações máximas e características elétricas
| Series | MAX 3000A |
| Programmable Type | In-System Programmable (ISP), EEPROM-based |
| Number of Macrocells | 256 |
| Number of Logic Elements / Blocks | 16 LABs (Logic Array Blocks) |
| Number of Gates | 5,000 typical usable gates |
| Number of User I/O | 116 |
| Propagation Delay (tpd max) | 10 ns |
| Maximum Frequency (fmax) | 95.2 MHz |
| Supply Voltage (VCCINT) | 3.0 V to 3.6 V (3.3 V nominal) |
| I/O Voltage Support | MultiVolt: 1.8 V / 2.5 V / 3.3 V / 5.0 V mixed |
| Logic Family | CMOS, EEPROM-based |
| Temperatura de operação | -40°C to +85°C (industrial) |
| Encapsulamento | 144-pin TQFP (20x20 mm) |
| Tipo de montagem | Surface Mount |
| Programming Interface | JTAG (IEEE 1149.1) and IEEE Std. 1532 ISP |
| Compliance | IEEE Std. 1532 ISP, PCI-compatible I/O |
| Status do ciclo de vida | Obsolete (per HighqualityPCB listing) |
Configuração de pinos do EPM3256ATI144-10
| 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 | 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 | I/O — User I/O pin (Bank 2) |
| Pino 16 | I/O — User I/O pin (Bank 2) |
| Pino 17 | I/O — User I/O pin (Bank 2) |
| Pino 18 | I/O — User I/O pin (Bank 2) |
| Pino 19 | I/O — User I/O pin (Bank 2) |
| Pino 20 | I/O — User I/O pin (Bank 2) |
| Pino 21 | GND — Ground |
| Pino 22 | I/O — User I/O pin (Bank 2) |
| Pino 23 | I/O — User I/O pin (Bank 2) |
| 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 | 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 | GND — Ground |
| Pino 32 | I/O — User I/O pin (Bank 2) |
| Pino 33 | I/O — User I/O pin (Bank 3) |
| 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 | I/O — User I/O pin (Bank 3) |
| 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 | I/O — User I/O pin (Bank 3) |
| Pino 43 | GND — Ground |
| Pino 44 | I/O — User I/O pin (Bank 3) |
| 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 | I/O — User I/O pin (Bank 3) |
| Pino 50 | I/O — User I/O pin (Bank 3) |
| Pino 51 | I/O — User I/O pin (Bank 3) |
| Pino 52 | I/O — User I/O pin (Bank 3) |
| 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 | I/O — User I/O pin (Bank 4) |
| 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 | GND — Ground |
| Pino 62 | I/O — User I/O pin (Bank 4) |
| Pino 63 | I/O — User I/O pin (Bank 4) |
| Pino 64 | I/O — User I/O pin (Bank 4) |
| 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 | I/O — User I/O pin (Bank 4) |
| Pino 72 | I/O — User I/O pin (Bank 4) |
| Pino 73 | TDI — JTAG Test Data In (IEEE 1149.1) |
| Pino 74 | TMS — JTAG Test Mode Select |
| Pino 75 | TCK — JTAG Test Clock |
| Pino 76 | GND — Ground |
| Pino 77 | VCCINT — Core supply 3.3 V (3.0-3.6 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 1) |
| Pino 83 | I/O — User I/O pin (Bank 1) |
| Pino 84 | I/O — User I/O pin (Bank 1) |
| Pino 85 | I/O — User I/O pin (Bank 1) |
| Pino 86 | I/O — User I/O pin (Bank 1) |
| Pino 87 | I/O — User I/O pin (Bank 1) |
| Pino 88 | I/O — User I/O pin (Bank 1) |
| Pino 89 | I/O — User I/O pin (Bank 1) |
| Pino 90 | I/O — User I/O pin (Bank 1) |
| Pino 91 | GND — Ground |
| Pino 92 | I/O — User I/O pin (Bank 1) |
| Pino 93 | I/O — User I/O pin (Bank 1) |
| Pino 94 | I/O — User I/O pin (Bank 1) |
| Pino 95 | I/O — User I/O pin (Bank 1) |
| Pino 96 | I/O — User I/O pin (Bank 1) |
| Pino 97 | I/O — User I/O pin (Bank 1) |
| Pino 98 | I/O — User I/O pin (Bank 1) |
| Pino 99 | I/O — User I/O pin (Bank 1) |
| Pino 100 | I/O — User I/O pin (Bank 1) |
| Pino 101 | I/O — User I/O pin (Bank 1) |
| Pino 102 | I/O — User I/O pin (Bank 2) |
| Pino 103 | I/O — User I/O pin (Bank 2) |
| Pino 104 | I/O — User I/O pin (Bank 2) |
| Pino 105 | I/O — User I/O pin (Bank 2) |
| Pino 106 | I/O — User I/O pin (Bank 2) |
| Pino 107 | GND — Ground |
| Pino 108 | I/O — User I/O pin (Bank 2) |
| Pino 109 | I/O — User I/O pin (Bank 2) |
| Pino 110 | I/O — User I/O pin (Bank 2) |
| Pino 111 | I/O — User I/O pin (Bank 2) |
| Pino 112 | I/O — User I/O pin (Bank 2) |
| Pino 113 | I/O — User I/O pin (Bank 2) |
| Pino 114 | I/O — User I/O pin (Bank 2) |
| Pino 115 | I/O — User I/O pin (Bank 3) |
| Pino 116 | I/O — User I/O pin (Bank 3) |
| Pino 117 | I/O — User I/O pin (Bank 3) |
| Pino 118 | I/O — User I/O pin (Bank 3) |
| Pino 119 | GND — Ground |
| Pino 120 | I/O — User I/O pin (Bank 3) |
| Pino 121 | I/O — User I/O pin (Bank 3) |
| Pino 122 | I/O — User I/O pin (Bank 3) |
| Pino 123 | I/O — User I/O pin (Bank 3) |
| Pino 124 | I/O — User I/O pin (Bank 3) |
| Pino 125 | I/O — User I/O pin (Bank 3) |
| Pino 126 | I/O — User I/O pin (Bank 3) |
| Pino 127 | I/O — User I/O pin (Bank 4) |
| Pino 128 | I/O — User I/O pin (Bank 4) |
| Pino 129 | I/O — User I/O pin (Bank 4) |
| Pino 130 | I/O — User I/O pin (Bank 4) |
| Pino 131 | I/O — User I/O pin (Bank 4) |
| Pino 132 | GND — Ground |
| Pino 133 | I/O — User I/O pin (Bank 4) |
| Pino 134 | I/O — User I/O pin (Bank 4) |
| Pino 135 | VCCIO — I/O bank supply voltage |
| Pino 136 | VCCIO — I/O bank supply voltage |
| Pino 137 | VCCINT — Core supply 3.3 V |
| Pino 138 | TDO — JTAG Test Data Out |
| Pino 139 | GND — Ground |
| Pino 140 | I/O — User I/O pin (Bank 4) |
| Pino 141 | I/O — User I/O pin (Bank 4) |
| Pino 142 | I/O — User I/O pin (Bank 4) |
| Pino 143 | I/O — User I/O pin (Bank 4) |
| Pino 144 | I/O — User I/O pin (Bank 4) |
Aplicações típicas
EPM3256ATI144-10 é adequado para 6 aplicaçãos: Microcontroller Bus-Interface Glue Logic, Address Decoding and Chip-Select Generation, Peripheral Controllers (UART/SPI/I2C Bridges), State Machine and Sequencer Controllers, PCI Add-in Card Auxiliary Logic, Legacy System Sustainment and Last-Time-Buy.
Microcontroller Bus-Interface Glue Logic
The EPM3256ATI144-10 fits microcontroller bus-interface bridge designs where 256 macrocells and 116 user I/Os are needed to consolidate scattered 74-series logic into a single non-volatile device. With 10 ns tpd and 95.2 MHz fmax it comfortably bridges 33 MHz address/data buses. Its instant-on EEPROM eliminates FPGA boot delays on power-up, ensuring deterministic bus arbitration at reset. Pin count supports wide 32-bit data plus 24-bit address plus control signal decoding on a single device.
Recomendado
Address Decoding and Chip-Select Generation
The 256 macrocells of the EPM3256ATI144-10 support wide address decoding trees for memory-mapped systems with up to 32-bit address buses, generating dozens of chip-select signals with predictable combinational delay. MultiVolt I/O (1.8/2.5/3.3/5.0 V) lets a single CPLD interface modern 1.8 V memory controllers and legacy 5 V peripherals without external level shifters. JTAG ISP allows last-minute CS map updates during board bring-up.
Recomendado
Peripheral Controllers (UART/SPI/I2C Bridges)
Industrial control boards use the EPM3256ATI144-10 to implement multi-channel UART, SPI, and I2C controllers with hardware state machines rather than firmware bit-banging. The 116 user I/Os support up to a dozen full-duplex serial channels, and the deterministic 10 ns tpd simplifies worst-case latency analysis. Industrial -40 to +85°C operation suits factory floor equipment. JTAG boundary-scan plus ISP simplifies field firmware upgrades via the IEEE Std. 1532 flow.
Recomendado
State Machine and Sequencer Controllers
The MAX 3000A architecture is optimized for finite state machines (FSMs) and sequencers, making the EPM3256ATI144-10 ideal for motor-control sequencers, instrumentation state machines, and protocol sequencers. Each of the 256 macrocells holds a registered state bit, supporting FSMs with up to 32 states without logic splitting. EEPROM configuration guarantees deterministic startup, critical for safety sequencing where FPGA boot is unacceptable.
Recomendado
PCI Add-in Card Auxiliary Logic
The PCI-compatible I/O drivers and 3.3V/5V-tolerant MultiVolt interface make the EPM3256ATI144-10 a traditional choice for legacy PCI add-in cards requiring auxiliary glue logic, EEPROM emulation, or local bus decoding. The 116 I/Os accommodate PCI 32-bit data/address plus auxiliary GPIO. Industrial temperature supports outdoor PCI instrumentation. Designers should pair with PCI bridge ASICs and verify against PCI Local Bus Specification 2.2 timing.
Recomendado
Legacy System Sustainment and Last-Time-Buy
Many industrial and aerospace programs continue to use the EPM3256ATI144-10 in long-lifecycle systems (factory controllers, medical instrumentation, military-grade boards) where redesign is cost-prohibitive. The industrial -40 to +85°C range and EEPROM-based non-volatile configuration suit 15 to 20 year field deployments. Sustainment teams should secure last-time-buy inventory, identify pin-compatible MAX 3000A variants (EPM3256ATC144-10N) for cross-stock, and qualify modern MAX II replacements where PCB rework is feasible.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPM3256ATI144-10 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPM3256ATC144-10N | EPM3256ATC144-10AA | EPM3256ATC144-10 | EPM3256ATC144-7N | EPM3128ATI144-10N |
|---|---|---|---|---|---|---|
| Brand | Intel (formerly Altera) | Intel | Intel | Intel | Intel | Intel |
| Package | 144-TQFP (20x20 mm) | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same | 144-TQFP (20x20 mm) - same |
| Number of Macrocells | 256 | 256 | 256 | 256 | 256 | 128 (-50%) |
| Propagation Delay (tpd max) | 10 ns | 10 ns | 10 ns | 10 ns | 7.5 ns (faster) | 10 ns |
| Operating Temperature | -40°C to +85°C (industrial) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) | -40°C to +85°C (industrial) |
| User I/Os | 116 | 116 | 116 | 116 | 116 | 96 |
| VCCINT Supply | 3.0 to 3.6 V (3.3 V nom) | 3.0 to 3.6 V | 3.0 to 3.6 V | 3.0 to 3.6 V | 3.0 to 3.6 V | 3.0 to 3.6 V |
| Series | MAX 3000A | MAX 3000A | MAX 3000A | MAX 3000A | MAX 3000A | MAX 3000A |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principais diferenciais
- Industrial temperature range (-40°C to +85°C) (vs EPM3256ATC144-10N)
- Highest macrocell count in the 144-TQFP MAX 3000A family (vs EPM3128ATI144-10N)
- 10 ns propagation delay with full I/O count (vs EPM3256ATC144-7N)
Notas de projeto
The EPM3256ATI144-10 operates from a single 3.3 V VCCINT supply (3.0 to 3.6 V). Decouple VCCINT and each VCCIO bank with 0.1 µF ceramic capacitors placed within 5 mm of each supply pin, plus a bulk 10 µF tantalum per bank. MultiVolt I/O banks must each have their own VCCIO rail (1.8/2.5/3.3/5.0 V) — do not tie VCCIO banks together if your design uses mixed voltages. IccINT during ISP programming is approximately 50% higher than in user mode; ensure regulator headroom.
The 144-TQFP (20x20 mm) has 0.5 mm pitch leads — use 0.15 mm trace/space design rules with 0.25 mm via drill minimum. Provide a solid ground pour under the device for thermal spreading and signal-integrity. Place JTAG header or test points for TDI/TDO/TMS/TCK near the board edge to simplify ISP programming and boundary-scan test. Add 10 kΩ pull-ups on TDI, TMS, and TCK per IEEE 1149.1 to keep the JTAG TAP controller in known state at power-up.
Do not use I/O pins before JTAG programming finishes — leaving pins floating during ISP can cause bus contention. For unused I/O pins, configure them as outputs driving low (not high-Z) in the Quartus II pin assignment. Do not exceed 24 mA sink current per I/O (per the MAX 3000A datasheet recommendation). For new designs, migrate to MAX II (EPM240T144C5N) or MAX V (5M240ZT100C5N) families — they offer more logic density, lower power, and active production status.
Informações de conformidade
Compliance information not present in verified web data. EPM3256ATI144-10 is an obsolete CPLD; RoHS status for this specific part was not found in DigiKey/Mouser/Octopart listings. Check Intel/legacy Altera documentation for original compliance declarations.
