EPM7256AETC144-5N - 256-Macrocell MAX 7000A CPLD | Altera | TQFP-144
Référence : EPM7256AETC144-5N ✓ Actif| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour EPM7256AETC144-5N — 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 EPM7256AETC144-5N (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, Programming Interface, Maximum Internal Frequency, User I/Os.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPM7256AETC144-7N
✅ Remplacement direct✓ En stock
$29.75 / unité
Voir la fiche technique →EPM7256AETC144-10N
✅ Remplacement direct✓ En stock
$15.95 / unité
Voir la fiche technique →EPM7256AETI144-7N
✅ Remplacement direct✓ En stock
$29.81 / unité
Voir la fiche technique →EPM7256AEQC208-5N
✅ Remplacement direct✓ En stock
$11.5 / unité
Voir la fiche technique →EPM7128AETC144-7N
✅ Remplacement direct✓ En stock
$39.82 / unité
Voir la fiche technique →EPM7256AETC144-5N Valeurs maximales et caractéristiques électriques
| 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) |
| Boîtier | TQFP-144 (Plastic Thin Quad Flat Pack) |
| Lead-Free / RoHS | Yes (N suffix) |
| Speed Grade | -5 |
Configuration des broches de EPM7256AETC144-5N
| Broche 1 | I/O — User I/O pin (bank 1) |
| Broche 2 | I/O — User I/O pin (bank 1) |
| Broche 3 | GCLK1 — Global clock input 1 |
| Broche 4 | I/O — User I/O pin (bank 1) |
| Broche 5 | I/O — User I/O pin (bank 1) |
| Broche 6 | VCCINT — Core supply voltage (3.3 V) |
| Broche 7 | I/O — User I/O pin (bank 1) |
| Broche 8 | GND — Ground |
| Broche 9 | I/O — User I/O pin (bank 1) |
| Broche 10 | I/O — User I/O pin (bank 1) |
| Broche 11 | I/O — User I/O pin (bank 1) |
| Broche 12 | I/O — User I/O pin (bank 1) |
| Broche 13 | I/O — User I/O pin (bank 2) |
| Broche 14 | I/O — User I/O pin (bank 2) |
| Broche 15 | GCLK2 — Global clock input 2 |
| Broche 16 | I/O — User I/O pin (bank 2) |
| Broche 17 | I/O — User I/O pin (bank 2) |
| Broche 18 | VCCIO1 — I/O bank 1 supply voltage |
| Broche 19 | I/O — User I/O pin (bank 2) |
| Broche 20 | I/O — User I/O pin (bank 2) |
| Broche 21 | I/O — User I/O pin (bank 2) |
| Broche 22 | I/O — User I/O pin (bank 2) |
| Broche 23 | GND — Ground |
| Broche 24 | I/O — User I/O pin (bank 2) |
| Broche 25 | I/O — User I/O pin (bank 2) |
| Broche 26 | I/O — User I/O pin (bank 2) |
| Broche 27 | OE1 — Global output enable 1 (active low) |
| Broche 28 | I/O — User I/O pin (bank 2) |
| Broche 29 | I/O — User I/O pin (bank 2) |
| Broche 30 | VCCINT — Core supply voltage (3.3 V) |
| Broche 31 | I/O — User I/O pin (bank 2) |
| Broche 32 | GCLK3 — Global clock input 3 |
| Broche 33 | I/O — User I/O pin (bank 2) |
| Broche 34 | I/O — User I/O pin (bank 3) |
| Broche 35 | I/O — User I/O pin (bank 3) |
| Broche 36 | I/O — User I/O pin (bank 3) |
| Broche 37 | GND — Ground |
| Broche 38 | I/O — User I/O pin (bank 3) |
| Broche 39 | I/O — User I/O pin (bank 3) |
| Broche 40 | I/O — User I/O pin (bank 3) |
| Broche 41 | I/O — User I/O pin (bank 3) |
| Broche 42 | VCCIO2 — I/O bank 2 supply voltage |
| Broche 43 | I/O — User I/O pin (bank 3) |
| Broche 44 | GCLK4 — Global clock input 4 |
| Broche 45 | I/O — User I/O pin (bank 3) |
| Broche 46 | I/O — User I/O pin (bank 3) |
| Broche 47 | I/O — User I/O pin (bank 3) |
| Broche 48 | I/O — User I/O pin (bank 3) |
| Broche 49 | OE2 — Global output enable 2 (active low) |
| Broche 50 | I/O — User I/O pin (bank 3) |
| Broche 51 | I/O — User I/O pin (bank 3) |
| Broche 52 | VCCINT — Core supply voltage (3.3 V) |
| Broche 53 | I/O — User I/O pin (bank 3) |
| Broche 54 | I/O — User I/O pin (bank 3) |
| Broche 55 | I/O — User I/O pin (bank 4) |
| Broche 56 | I/O — User I/O pin (bank 4) |
| Broche 57 | GND — Ground |
| Broche 58 | I/O — User I/O pin (bank 4) |
| Broche 59 | I/O — User I/O pin (bank 4) |
| Broche 60 | I/O — User I/O pin (bank 4) |
| Broche 61 | I/O — User I/O pin (bank 4) |
| Broche 62 | I/O — User I/O pin (bank 4) |
| Broche 63 | I/O — User I/O pin (bank 4) |
| Broche 64 | VCCIO3 — I/O bank 3 supply voltage |
| Broche 65 | I/O — User I/O pin (bank 4) |
| Broche 66 | I/O — User I/O pin (bank 4) |
| Broche 67 | I/O — User I/O pin (bank 4) |
| Broche 68 | I/O — User I/O pin (bank 4) |
| Broche 69 | I/O — User I/O pin (bank 4) |
| Broche 70 | I/O — User I/O pin (bank 4) |
| Broche 71 | GND — Ground |
| Broche 72 | I/O — User I/O pin (bank 4) |
| Broche 73 | I/O — User I/O pin (bank 4) |
| Broche 74 | TDI — JTAG Test Data In |
| Broche 75 | TMS — JTAG Test Mode Select |
| Broche 76 | TCK — JTAG Test Clock |
| Broche 77 | VCCINT — Core supply voltage (3.3 V) |
| Broche 78 | I/O — User I/O pin (bank 4) |
| Broche 79 | I/O — User I/O pin (bank 4) |
| Broche 80 | I/O — User I/O pin (bank 4) |
| Broche 81 | I/O — User I/O pin (bank 4) |
| Broche 82 | I/O — User I/O pin (bank 4) |
| Broche 83 | I/O — User I/O pin (bank 4) |
| Broche 84 | VCCIO4 — I/O bank 4 supply voltage |
| Broche 85 | I/O — User I/O pin (bank 4) |
| Broche 86 | I/O — User I/O pin (bank 4) |
| Broche 87 | I/O — User I/O pin (bank 4) |
| Broche 88 | I/O — User I/O pin (bank 4) |
| Broche 89 | I/O — User I/O pin (bank 4) |
| Broche 90 | I/O — User I/O pin (bank 4) |
| Broche 91 | GND — Ground |
| Broche 92 | I/O — User I/O pin (bank 4) |
| Broche 93 | I/O — User I/O pin (bank 4) |
| Broche 94 | TDO — JTAG Test Data Out |
| Broche 95 | I/O — User I/O pin (bank 4) |
| Broche 96 | I/O — User I/O pin (bank 4) |
| Broche 97 | VCCINT — Core supply voltage (3.3 V) |
| Broche 98 | I/O — User I/O pin (bank 4) |
| Broche 99 | I/O — User I/O pin (bank 4) |
| Broche 100 | I/O — User I/O pin (bank 4) |
| Broche 101 | I/O — User I/O pin (bank 4) |
| Broche 102 | I/O — User I/O pin (bank 4) |
| Broche 103 | I/O — User I/O pin (bank 4) |
| Broche 104 | VCCIO1 — I/O bank 1 supply voltage (alternate pin) |
| Broche 105 | I/O — User I/O pin (bank 1) |
| Broche 106 | I/O — User I/O pin (bank 1) |
| Broche 107 | I/O — User I/O pin (bank 1) |
| Broche 108 | I/O — User I/O pin (bank 1) |
| Broche 109 | I/O — User I/O pin (bank 1) |
| Broche 110 | I/O — User I/O pin (bank 1) |
| Broche 111 | GND — Ground |
| Broche 112 | I/O — User I/O pin (bank 1) |
| Broche 113 | I/O — User I/O pin (bank 1) |
| Broche 114 | I/O — User I/O pin (bank 1) |
| Broche 115 | I/O — User I/O pin (bank 1) |
| Broche 116 | I/O — User I/O pin (bank 1) |
| Broche 117 | I/O — User I/O pin (bank 1) |
| Broche 118 | VCCINT — Core supply voltage (3.3 V) |
| Broche 119 | I/O — User I/O pin (bank 1) |
| Broche 120 | I/O — User I/O pin (bank 1) |
| Broche 121 | I/O — User I/O pin (bank 1) |
| Broche 122 | I/O — User I/O pin (bank 1) |
| Broche 123 | I/O — User I/O pin (bank 1) |
| Broche 124 | I/O — User I/O pin (bank 1) |
| Broche 125 | I/O — User I/O pin (bank 1) |
| Broche 126 | VCCIO2 — I/O bank 2 supply voltage (alternate pin) |
| Broche 127 | I/O — User I/O pin (bank 2) |
| Broche 128 | I/O — User I/O pin (bank 2) |
| Broche 129 | I/O — User I/O pin (bank 2) |
| Broche 130 | I/O — User I/O pin (bank 2) |
| Broche 131 | I/O — User I/O pin (bank 2) |
| Broche 132 | GND — Ground |
| Broche 133 | I/O — User I/O pin (bank 2) |
| Broche 134 | I/O — User I/O pin (bank 2) |
| Broche 135 | I/O — User I/O pin (bank 2) |
| Broche 136 | I/O — User I/O pin (bank 2) |
| Broche 137 | I/O — User I/O pin (bank 2) |
| Broche 138 | I/O — User I/O pin (bank 2) |
| Broche 139 | VCCINT — Core supply voltage (3.3 V) |
| Broche 140 | I/O — User I/O pin (bank 2) |
| Broche 141 | I/O — User I/O pin (bank 2) |
| Broche 142 | I/O — User I/O pin (bank 2) |
| Broche 143 | I/O — User I/O pin (bank 2) |
| Broche 144 | I/O — User I/O pin (bank 2) |
Applications typiques
EPM7256AETC144-5N convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPM7256AETC144-5N — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
