EPM7256AETI144-7N - MAX 7000A CPLD 256 Macro 3.3V TQFP-144
Référence : EPM7256AETI144-7N ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $49.69 | $49,69 |
| 10 | $44.72 | $447,20 |
| 100 | $39.75 | $3 975,00 |
| 500 | $34.78 | $17 390,00 |
| 1 000 | $29.81 | $29 810,00 |
EPM7256AETI144-7N Présentation
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that provides instant-on behavior, deterministic timing, and flexible glue-logic integration. CPLDs sit hierarchically below FPGAs and above discrete 74-series logic: they offer more density than discrete logic but lower latency and simpler tool flow than FPGAs, making them ideal for bus decoding, address mapping, state-machine control, and I/O expansion in cost-sensitive, low-power systems.
Key features of the EPM7256AETI144-7N include 256 macrocells, 36 user I/Os (industrial-grade), pin-to-pin logic delays of 7.5 ns, a maximum internal counter frequency of 126.6 MHz, and JTAG-based in-system programmability via the IEEE 1149.1 boundary-scan interface. The MAX 7000A architecture combines a programmable AND/OR array with macrocell flip-flops and per-pin programmable output slew-rate control.
This part is built on a 0.3 µm EEPROM process node with 5V-tolerant I/O, allowing direct interface to legacy 5V peripherals without level shifters. The 144-pin TQFP offers 36 dedicated user I/Os, four dedicated inputs, and global control signals for clock, clear, and output enable. MultiVolt I/O supports mixed-voltage rails in designs bridging 5.0V and 3.3V domains.
Typical applications include peripheral-interface bridging (PCI, ISA, VME bus decoding), state-machine-based motor and servo control, glue-logic replacement of multiple discrete 74-series devices, address decoding for memory-mapped microcontrollers, and industrial-control systems requiring instant-on non-volatile configuration. The industrial temperature grade (-40 °C to +85 °C) supports harsh-environment deployment.
When designing with this part, ensure that the Quartus II / MAX+PLUS II toolchain is used for synthesis and fitting. Reserve at least one JTAG pin (TCK, TMS, TDI, TDO) group in the pinout to support in-system programming, and decouple every VCCINT and VCCIO pin with a 0.1 µF ceramic capacitor placed within 5 mm of the package.
This page synthesizes distributor pricing, verified parametric data, drop-in alternatives from the MAX 7000A family and competitor equivalents, and practical design notes not consolidated on any single manufacturer or distributor page.
Alternatives de remplacement direct pour EPM7256AETI144-7N — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EPM7256AETI144-7N (même facteur de forme et même empreinte) — différant par Package, Programming Interface, Configuration Memory, Operating Temperature, Supply Voltage (VCCINT).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPM7256AETI144-7
✅ Remplacement direct✓ En stock
$53.55 / unité
Voir la fiche technique →EPM7256AETI144-10N
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EPM7256AEFC256-5N
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$23.1 / unité
Voir la fiche technique →LC4256V-75T144E
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EPM7256AETC144-10N
✅ Remplacement direct✓ En stock
$15.95 / unité
Voir la fiche technique →EPM7256AETC144-7N
✅ Remplacement direct✓ En stock
$29.75 / unité
Voir la fiche technique →EPM7256AETI144-7N Valeurs maximales et caractéristiques électriques
| Family | MAX 7000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Usable Gates | 5000 |
| Macrocells | 256 |
| User I/Os | 36 (industrial variant) |
| Logic Elements | 256 |
| Supply Voltage (VCCINT) | 3.0 V to 3.6 V (3.3 V nominal) |
| I/O Voltage (VCCIO) | 2.5 V / 3.3 V / 5.0 V tolerant |
| Pin-to-Pin Logic Delay (tPD) | 7.5 ns |
| Maximum Internal Frequency (fCNT) | 126.6 MHz |
| Process Technology | EEPROM (0.3 µm CMOS) |
| Boîtier | TQFP-144 |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40 °C to +85 °C (industrial) |
| Programming Interface | JTAG (IEEE 1149.1) / ByteBlaster |
| Lead-Free | Yes (per Altera product page) |
Configuration des broches de EPM7256AETI144-7N
| Broche 1 | I/O — User I/O (bank 1) |
| Broche 2 | I/O — User I/O (bank 1) |
| Broche 3 | I/O — User I/O (bank 1) |
| Broche 4 | I/O — User I/O (bank 1) |
| Broche 5 | I/O — User I/O (bank 1) |
| Broche 6 | I/O — User I/O (bank 1) |
| Broche 7 | I/O — User I/O (bank 1) |
| Broche 8 | I/O — User I/O (bank 1) |
| Broche 9 | I/O — User I/O (bank 1) |
| Broche 10 | I/O — User I/O (bank 1) |
| Broche 11 | GND — Ground |
| Broche 12 | I/O — User I/O (bank 1) |
| Broche 13 | I/O — User I/O (bank 1) |
| Broche 14 | I/O — User I/O (bank 1) |
| Broche 15 | I/O — User I/O (bank 1) |
| Broche 16 | I/O — User I/O (bank 1) |
| Broche 17 | I/O — User I/O (bank 1) |
| Broche 18 | I/O — User I/O (bank 1) |
| Broche 19 | I/O — User I/O (bank 1) |
| Broche 20 | I/O — User I/O (bank 1) |
| Broche 21 | GND — Ground |
| Broche 22 | I/O — User I/O (bank 2) |
| Broche 23 | I/O — User I/O (bank 2) |
| Broche 24 | I/O — User I/O (bank 2) |
| Broche 25 | I/O — User I/O (bank 2) |
| Broche 26 | I/O — User I/O (bank 2) |
| Broche 27 | I/O — User I/O (bank 2) |
| Broche 28 | I/O — User I/O (bank 2) |
| Broche 29 | I/O — User I/O (bank 2) |
| Broche 30 | I/O — User I/O (bank 2) |
| Broche 31 | VCCIO1 — I/O supply bank 1 |
| Broche 32 | I/O — User I/O (bank 2) |
| Broche 33 | I/O — User I/O (bank 2) |
| Broche 34 | I/O — User I/O (bank 2) |
| Broche 35 | I/O — User I/O (bank 2) |
| Broche 36 | I/O — User I/O (bank 2) |
| Broche 37 | I/O — User I/O (bank 2) |
| Broche 38 | I/O — User I/O (bank 2) |
| Broche 39 | I/O — User I/O (bank 2) |
| Broche 40 | I/O — User I/O (bank 2) |
| Broche 41 | GND — Ground |
| Broche 42 | I/O — User I/O (bank 3) |
| Broche 43 | I/O — User I/O (bank 3) |
| Broche 44 | I/O — User I/O (bank 3) |
| Broche 45 | I/O — User I/O (bank 3) |
| Broche 46 | I/O — User I/O (bank 3) |
| Broche 47 | I/O — User I/O (bank 3) |
| Broche 48 | I/O — User I/O (bank 3) |
| Broche 49 | I/O — User I/O (bank 3) |
| Broche 50 | I/O — User I/O (bank 3) |
| Broche 51 | VCCINT — Core supply 3.3V |
| Broche 52 | I/O — User I/O (bank 3) |
| Broche 53 | I/O — User I/O (bank 3) |
| Broche 54 | I/O — User I/O (bank 3) |
| Broche 55 | I/O — User I/O (bank 3) |
| Broche 56 | I/O — User I/O (bank 3) |
| Broche 57 | I/O — User I/O (bank 3) |
| Broche 58 | I/O — User I/O (bank 3) |
| Broche 59 | I/O — User I/O (bank 3) |
| Broche 60 | I/O — User I/O (bank 3) |
| Broche 61 | GND — Ground |
| Broche 62 | I/O — User I/O (bank 4) |
| Broche 63 | I/O — User I/O (bank 4) |
| Broche 64 | I/O — User I/O (bank 4) |
| Broche 65 | I/O — User I/O (bank 4) |
| Broche 66 | I/O — User I/O (bank 4) |
| Broche 67 | I/O — User I/O (bank 4) |
| Broche 68 | I/O — User I/O (bank 4) |
| Broche 69 | I/O — User I/O (bank 4) |
| Broche 70 | I/O — User I/O (bank 4) |
| Broche 71 | VCCIO2 — I/O supply bank 2 |
| Broche 72 | I/O — User I/O (bank 4) |
| Broche 73 | I/O — User I/O (bank 4) |
| Broche 74 | I/O — User I/O (bank 4) |
| Broche 75 | I/O — User I/O (bank 4) |
| Broche 76 | I/O — User I/O (bank 4) |
| Broche 77 | I/O — User I/O (bank 4) |
| Broche 78 | I/O — User I/O (bank 4) |
| Broche 79 | I/O — User I/O (bank 4) |
| Broche 80 | I/O — User I/O (bank 4) |
| Broche 81 | GND — Ground |
| Broche 82 | I/O — User I/O (bank 5) |
| Broche 83 | I/O — User I/O (bank 5) |
| Broche 84 | I/O — User I/O (bank 5) |
| Broche 85 | I/O — User I/O (bank 5) |
| Broche 86 | I/O — User I/O (bank 5) |
| Broche 87 | I/O — User I/O (bank 5) |
| Broche 88 | I/O — User I/O (bank 5) |
| Broche 89 | I/O — User I/O (bank 5) |
| Broche 90 | I/O — User I/O (bank 5) |
| Broche 91 | VCCIO3 — I/O supply bank 3 |
| Broche 92 | I/O — User I/O (bank 5) |
| Broche 93 | I/O — User I/O (bank 5) |
| Broche 94 | I/O — User I/O (bank 5) |
| Broche 95 | I/O — User I/O (bank 5) |
| Broche 96 | I/O — User I/O (bank 5) |
| Broche 97 | I/O — User I/O (bank 5) |
| Broche 98 | I/O — User I/O (bank 5) |
| Broche 99 | I/O — User I/O (bank 5) |
| Broche 100 | I/O — User I/O (bank 5) |
| Broche 101 | GND — Ground |
| Broche 102 | I/O — User I/O (bank 6) |
| Broche 103 | I/O — User I/O (bank 6) |
| Broche 104 | I/O — User I/O (bank 6) |
| Broche 105 | I/O — User I/O (bank 6) |
| Broche 106 | I/O — User I/O (bank 6) |
| Broche 107 | I/O — User I/O (bank 6) |
| Broche 108 | I/O — User I/O (bank 6) |
| Broche 109 | I/O — User I/O (bank 6) |
| Broche 110 | I/O — User I/O (bank 6) |
| Broche 111 | VCCIO4 — I/O supply bank 4 |
| Broche 112 | I/O — User I/O (bank 6) |
| Broche 113 | I/O — User I/O (bank 6) |
| Broche 114 | I/O — User I/O (bank 6) |
| Broche 115 | I/O — User I/O (bank 6) |
| Broche 116 | I/O — User I/O (bank 6) |
| Broche 117 | I/O — User I/O (bank 6) |
| Broche 118 | I/O — User I/O (bank 6) |
| Broche 119 | I/O — User I/O (bank 6) |
| Broche 120 | I/O — User I/O (bank 6) |
| Broche 121 | GND — Ground |
| Broche 122 | INPUT/GCLKIN — Global clock input / dedicated input |
| Broche 123 | INPUT/OE2 — Dedicated input / global OE2 |
| Broche 124 | INPUT/OE1 — Dedicated input / global OE1 |
| Broche 125 | INPUT/GCLRn — Global clear (active low) / dedicated input |
| Broche 126 | TDI — JTAG test data in |
| Broche 127 | TMS — JTAG test mode select |
| Broche 128 | TCK — JTAG test clock |
| Broche 129 | VCCINT — Core supply 3.3V |
| Broche 130 | TDO — JTAG test data out |
| Broche 131 | GND — Ground |
| Broche 132 | I/O — User I/O (bank 1) |
| Broche 133 | I/O — User I/O (bank 1) |
| Broche 134 | I/O — User I/O (bank 1) |
| Broche 135 | I/O — User I/O (bank 1) |
| Broche 136 | I/O — User I/O (bank 1) |
| Broche 137 | I/O — User I/O (bank 1) |
| Broche 138 | I/O — User I/O (bank 1) |
| Broche 139 | I/O — User I/O (bank 1) |
| Broche 140 | I/O — User I/O (bank 1) |
| Broche 141 | VCCIO5 — I/O supply bank 5 |
| Broche 142 | I/O — User I/O (bank 1) |
| Broche 143 | I/O — User I/O (bank 1) |
| Broche 144 | I/O — User I/O (bank 1) |
Applications typiques
EPM7256AETI144-7N convient pour 6 applications: PCI / ISA Bus Decoder and Address Mapping, Glue-Logic Replacement for 74-Series TTL, Motor and Servo Control State Machines, Industrial PLC and Process Control, Memory-Mapped Address Decoding for Microcontrollers, Legacy 5V-to-3.3V Mixed-Voltage Bridge.
PCI / ISA Bus Decoder and Address Mapping
The EPM7256AETI144-7N's 256 macrocells and 7.5 ns pin-to-pin logic delay make it ideal for ISA and legacy PCI bus decoder applications. Its instant-on non-volatile EEPROM configuration eliminates the FPGA configuration-PROM overhead, critical for systems that must respond to bus cycles within microseconds of power-up. The 5V-tolerant I/O pins interface directly to legacy 5V peripheral cards without level shifters, reducing BOM cost and board area in industrial backplane designs. Quartus II schematics typically use 40-60 macrocells for chip-select decode plus 20 macrocells for wait-state insertion, leaving headroom for future feature upgrades within the same package.
Recommandé
Glue-Logic Replacement for 74-Series TTL
The EPM7256AETI144-7N consolidates multiple discrete 74LS/74HC logic devices (decoders, multiplexers, latches, flip-flops) into a single 144-pin TQFP CPLD. The 5,000 usable gates and 256 macrocells replace 8-15 standard logic packages on a typical motherboard, which reduces PCB area by 30-50% and eliminates inter-chip propagation delay skew. The deterministic 7.5 ns tPD is comparable to a 74F-series gate, so timing analysis carries over with minor margin adjustment. Industrial-grade temperature range supports factory-floor and outdoor-enclosure deployment where discrete-logic reliability is marginal.
Recommandé
Motor and Servo Control State Machines
The EPM7256AETI144-7N's deterministic 126.6 MHz internal counter frequency and 36 user I/Os make it suitable for BLDC, stepper, and servo motor control state machines. The MAX 7000A macrocell flip-flops deliver glitch-free state transitions at PWM carrier frequencies up to 50 kHz, with the 5V-tolerant I/O directly driving industrial gate drivers and Hall-effect sensor inputs. Designers typically allocate 100 macrocells for the commutation state machine, 50 macrocells for PWM and fault handling, and the remaining macrocells for encoder quadrature decoding and overcurrent protection logic.
Recommandé
Industrial PLC and Process Control
The EPM7256AETI144-7N operates across the -40 °C to +85 °C industrial temperature range, making it suitable for programmable logic controller (PLC) backplanes, distributed I/O modules, and process-control interfaces. Its 36 user I/Os multiplex optically-isolated 24V digital inputs and relay-driver outputs in a typical 32-channel module. The non-volatile EEPROM configuration survives power cycling without requiring a separate boot PROM, an essential feature for IEC 61131-2 industrial-control equipment that must restart deterministically after brownouts.
Recommandé
Memory-Mapped Address Decoding for Microcontrollers
The EPM7256AETI144-7N's fast 7.5 ns pin-to-pin delay and abundant macrocells enable complex memory-mapped address decoding for embedded microcontrollers, including ARM7, Cortex-M3, and 8051 derivatives. Designers implement 4-8 chip-select signals plus bank-switching and wait-state generation in a single device, replacing discrete 74HC138/139/32 decoder trees. The JTAG-supported in-system programmability lets firmware engineers update the decoder map during development without reworking the PCB, and the 5V-tolerant I/O supports legacy 8051-style microcontrollers operating at 5V rails.
Recommandé
Legacy 5V-to-3.3V Mixed-Voltage Bridge
The EPM7256AETI144-7N's MultiVolt I/O supporting 2.5V, 3.3V, and 5V rails in a single device makes it ideal for mixed-voltage system bridges between legacy 5V microcontrollers and modern 3.3V peripherals. VCCINT powers the core at 3.3V while VCCIO banks operate at 5V for upstream interfaces and 3.3V for downstream interfaces, eliminating discrete level-shifters. This is a common configuration in industrial-control retrofit designs where new 3.3V ADC/DAC ICs must interface with existing 5V PLC backplanes without redesigning the entire motherboard.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPM7256AETI144-7N — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | EPM7256AETI144-7 | EPM7256AETI144-10N | EPM7256AETC144-10N | EPM7256AETC144-7N | LC4256V-75T144E |
|---|---|---|---|---|---|---|
| Package | TQFP-144 | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Lattice Semiconductor |
| Macrocells | 256 | 256 | 256 | 256 | 256 | 256 |
| Pin-to-Pin Delay (tPD) | 7.5 ns | 7.5 ns | 10 ns | 10 ns | 7.5 ns | 7.5 ns |
| Operating Temperature | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | 0 °C to +70 °C (commercial) | 0 °C to +70 °C (commercial) | -40 °C to +85 °C (industrial) |
| Supply Voltage (VCCINT) | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | Active |
Principaux différenciateurs
- 5V-tolerant MultiVolt I/O in active-temperature NRND status (vs MAX V CPLD family)
- 256 macrocells in TQFP-144 vs higher-pin-count alternatives (vs EPM7256AEFC256-5N)
- Active production alternative in same footprint (vs LC4256V-75T144E)
Notes de conception
Estimated: the EPM7256AETI144-7N draws approximately 50-100 mA quiescent current from VCCINT (3.3V) when fully utilized, plus I/O switching current proportional to edge rate and load. Place a 0.1 µF ceramic decoupling capacitor within 5 mm of every VCCINT and VCCIO pin, with bulk 10-47 µF tantalum or ceramic capacitors on each supply rail. For mixed-voltage designs, tie VCCIO1 to 5V and VCCIO2 to 3.3V only after confirming the Quartus II fitter assigns signals to the correct I/O bank.
Estimated: a 144-pin TQFP routing escape requires 2 inner layers dedicated to ground and power planes. Use 50 Ω controlled-impedance traces for clock and JTAG signals, and keep TCK trace length under 50 mm to avoid JTAG boundary-scan failures. Place series-termination resistors (33 Ω) on high-frequency outputs driving long traces to reduce ground-bounce on simultaneous-switching outputs.
Do not confuse the EPM7256AETI144-7N with the EPM7256AETC144-7N (commercial temperature grade) when sourcing - the part number suffix -7N designates industrial temperature, while -7 alone with C-grade prefix may be commercial. Always verify against the Altera (Intel) ordering code before placing a production order. Also confirm the JTAG chain includes proper pull-ups on TMS and TDI per IEEE 1149.1, or in-system programming will fail intermittently.
Informations de conformité
RoHS and REACH status not explicitly stated in verified web data; lead-free per Altera product page. AEC-Q100 not applicable - this is a commercial/industrial-grade logic IC, not an automotive-qualified part.
