EPM7256ATI144-10N - 256-Macrocell MAX 7000A CPLD, 144-TQFP | Altera
Référence : EPM7256ATI144-10N ⚠ Dernier achat| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour EPM7256ATI144-10N — 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 EPM7256ATI144-10N (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, Programming Interface, Maximum Internal Frequency, Usable Gates.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPM7256AETI144-10N
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
EPM7256AETI144-7N
✅ Remplacement direct✓ En stock
$29.81 / unité
Voir la fiche technique →EPM7256AETC144-10N
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$15.95 / unité
Voir la fiche technique →EPM7256AETC144-7N
✅ Remplacement direct✓ En stock
$29.75 / unité
Voir la fiche technique →EPM7256AETC144-5N
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$9.95 / unité
Voir la fiche technique →EPM7256AETC144-10
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$31.4 / unité
Voir la fiche technique →EPM7256ATI144-10N Valeurs maximales et caractéristiques électriques
| 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) |
| Boîtier | TQFP-144 |
| Température de fonctionnement | -40C to +85C (industrial) |
Configuration des broches de EPM7256ATI144-10N
| 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 | GND — Ground |
| Broche 10 | I/O — User I/O (bank 1) |
| Broche 11 | I/O — User I/O (bank 1) |
| Broche 12 | I/O — User I/O (bank 1) |
| Broche 13 | I/O — User I/O (bank 1) |
| Broche 14 | TDI — JTAG Test Data In |
| Broche 15 | TMS — JTAG Test Mode Select |
| Broche 16 | TCK — JTAG Test Clock |
| 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 | I/O — User I/O (bank 1) |
| Broche 22 | I/O — User I/O (bank 1) |
| Broche 23 | I/O — User I/O (bank 1) |
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| Broche 25 | I/O — User I/O (bank 1) |
| Broche 26 | I/O — User I/O (bank 1) |
| Broche 27 | I/O — User I/O (bank 1) |
| Broche 28 | I/O — User I/O (bank 1) |
| Broche 29 | I/O — User I/O (bank 1) |
| Broche 30 | VCCINT — Core supply 3.3V |
| Broche 31 | I/O — User I/O (bank 1) |
| Broche 32 | I/O — User I/O (bank 1) |
| Broche 33 | I/O — User I/O (bank 1) |
| Broche 34 | I/O — User I/O (bank 1) |
| Broche 35 | GND — Ground |
| Broche 36 | I/O — User I/O (bank 1) |
| 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 | I/O — User I/O (bank 2) |
| Broche 42 | I/O — User I/O (bank 2) |
| Broche 43 | I/O — User I/O (bank 2) |
| Broche 44 | I/O — User I/O (bank 2) |
| Broche 45 | VCCIO1 — I/O bank 1 supply (2.5V or 3.3V) |
| Broche 46 | I/O — User I/O (bank 2) |
| Broche 47 | I/O — User I/O (bank 2) |
| Broche 48 | I/O — User I/O (bank 2) |
| Broche 49 | I/O — User I/O (bank 2) |
| Broche 50 | I/O — User I/O (bank 2) |
| Broche 51 | I/O — User I/O (bank 2) |
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| Broche 56 | I/O — User I/O (bank 2) |
| Broche 57 | I/O — User I/O (bank 2) |
| Broche 58 | I/O — User I/O (bank 2) |
| Broche 59 | I/O — User I/O (bank 2) |
| Broche 60 | GND — Ground |
| Broche 61 | I/O — User I/O (bank 2) |
| Broche 62 | I/O — User I/O (bank 2) |
| Broche 63 | I/O — User I/O (bank 2) |
| Broche 64 | I/O — User I/O (bank 2) |
| Broche 65 | I/O — User I/O (bank 2) |
| Broche 66 | I/O — User I/O (bank 2) |
| Broche 67 | I/O — User I/O (bank 2) |
| Broche 68 | I/O — User I/O (bank 2) |
| Broche 69 | I/O — User I/O (bank 2) |
| Broche 70 | I/O — User I/O (bank 2) |
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| Broche 72 | I/O — User I/O (bank 2) |
| Broche 73 | I/O — User I/O (bank 2) |
| Broche 74 | I/O — User I/O (bank 2) |
| Broche 75 | I/O — User I/O (bank 2) |
| Broche 76 | VCCIO2 — I/O bank 2 supply (2.5V or 3.3V) |
| Broche 77 | I/O — User I/O (bank 2) |
| Broche 78 | I/O — User I/O (bank 2) |
| Broche 79 | I/O — User I/O (bank 2) |
| Broche 80 | I/O — User I/O (bank 2) |
| Broche 81 | I/O — User I/O (bank 2) |
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| Broche 86 | I/O — User I/O (bank 2) |
| Broche 87 | I/O — User I/O (bank 2) |
| Broche 88 | I/O — User I/O (bank 2) |
| Broche 89 | I/O — User I/O (bank 2) |
| Broche 90 | GND — Ground |
| Broche 91 | I/O — User I/O (bank 2) |
| Broche 92 | I/O — User I/O (bank 2) |
| Broche 93 | I/O — User I/O (bank 2) |
| Broche 94 | I/O — User I/O (bank 2) |
| Broche 95 | I/O — User I/O (bank 2) |
| Broche 96 | I/O — User I/O (bank 2) |
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| Broche 98 | I/O — User I/O (bank 2) |
| Broche 99 | I/O — User I/O (bank 2) |
| Broche 100 | I/O — User I/O (bank 2) |
| Broche 101 | I/O — User I/O (bank 2) |
| Broche 102 | I/O — User I/O (bank 2) |
| Broche 103 | I/O — User I/O (bank 2) |
| Broche 104 | I/O — User I/O (bank 2) |
| Broche 105 | I/O — User I/O (bank 2) |
| Broche 106 | GND — Ground |
| Broche 107 | I/O — User I/O (bank 2) |
| Broche 108 | I/O — User I/O (bank 2) |
| Broche 109 | I/O — User I/O (bank 2) |
| Broche 110 | I/O — User I/O (bank 2) |
| Broche 111 | I/O — User I/O (bank 2) |
| Broche 112 | I/O — User I/O (bank 2) |
| Broche 113 | I/O — User I/O (bank 2) |
| Broche 114 | I/O — User I/O (bank 2) |
| Broche 115 | I/O — User I/O (bank 2) |
| Broche 116 | I/O — User I/O (bank 2) |
| Broche 117 | I/O — User I/O (bank 2) |
| Broche 118 | I/O — User I/O (bank 2) |
| Broche 119 | I/O — User I/O (bank 2) |
| Broche 120 | I/O — User I/O (bank 2) |
| Broche 121 | I/O — User I/O (bank 2) |
| Broche 122 | GND — Ground |
| Broche 123 | I/O — User I/O (bank 2) |
| Broche 124 | I/O — User I/O (bank 2) |
| Broche 125 | I/O — User I/O (bank 2) |
| Broche 126 | I/O — User I/O (bank 2) |
| Broche 127 | I/O — User I/O (bank 2) |
| Broche 128 | I/O — User I/O (bank 2) |
| Broche 129 | I/O — User I/O (bank 2) |
| Broche 130 | I/O — User I/O (bank 2) |
| Broche 131 | I/O — User I/O (bank 2) |
| Broche 132 | I/O — User I/O (bank 2) |
| Broche 133 | I/O — User I/O (bank 2) |
| Broche 134 | I/O — User I/O (bank 2) |
| Broche 135 | I/O — User I/O (bank 2) |
| Broche 136 | I/O — User I/O (bank 2) |
| Broche 137 | I/O — User I/O (bank 2) |
| Broche 138 | GND — Ground |
| Broche 139 | I/O — User I/O (bank 2) |
| Broche 140 | I/O — User I/O (bank 2) |
| Broche 141 | I/O — User I/O (bank 2) |
| Broche 142 | I/O — User I/O (bank 2) |
| Broche 143 | I/O — User I/O (bank 2) |
| Broche 144 | I/O — User I/O (bank 2) |
Applications typiques
EPM7256ATI144-10N convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPM7256ATI144-10N — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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) |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.