EPM7256AETC144-5N - 256-Macrocell MAX 7000A CPLD | Altera | TQFP-144
MPN: EPM7256AETC144-5N ✓ AktifEPM7256AETC144-5N Ringkasan
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.
Alternatif penggantian untuk EPM7256AETC144-5N — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian EPM7256AETC144-5N (sama faktor bentuk dan footprint) — berbeda di dalam Package, Operating Temperature, Programming Interface, Maximum Internal Frequency, User I/Os.
EPM7256AETC144-7N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7256AETC144-10N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7256AETI144-7N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7256AEQC208-5N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7128AETC144-7N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7256AETC144-5N Rating Maksimal & Karakteristik Listrik
| 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) |
| Paket | TQFP-144 (Plastic Thin Quad Flat Pack) |
| Lead-Free / RoHS | Yes (N suffix) |
| Speed Grade | -5 |
Konfigurasi Pin EPM7256AETC144-5N
| Pin produk 1 | I/O — User I/O pin (bank 1) |
| Pin produk 2 | I/O — User I/O pin (bank 1) |
| Pin produk 3 | GCLK1 — Global clock input 1 |
| Pin produk 4 | I/O — User I/O pin (bank 1) |
| Pin produk 5 | I/O — User I/O pin (bank 1) |
| Pin produk 6 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 7 | I/O — User I/O pin (bank 1) |
| Pin produk 8 | GND — Ground |
| Pin produk 9 | I/O — User I/O pin (bank 1) |
| Pin produk 10 | I/O — User I/O pin (bank 1) |
| Pin produk 11 | I/O — User I/O pin (bank 1) |
| Pin produk 12 | I/O — User I/O pin (bank 1) |
| Pin produk 13 | I/O — User I/O pin (bank 2) |
| Pin produk 14 | I/O — User I/O pin (bank 2) |
| Pin produk 15 | GCLK2 — Global clock input 2 |
| Pin produk 16 | I/O — User I/O pin (bank 2) |
| Pin produk 17 | I/O — User I/O pin (bank 2) |
| Pin produk 18 | VCCIO1 — I/O bank 1 supply voltage |
| Pin produk 19 | I/O — User I/O pin (bank 2) |
| Pin produk 20 | I/O — User I/O pin (bank 2) |
| Pin produk 21 | I/O — User I/O pin (bank 2) |
| Pin produk 22 | I/O — User I/O pin (bank 2) |
| Pin produk 23 | GND — Ground |
| Pin produk 24 | I/O — User I/O pin (bank 2) |
| Pin produk 25 | I/O — User I/O pin (bank 2) |
| Pin produk 26 | I/O — User I/O pin (bank 2) |
| Pin produk 27 | OE1 — Global output enable 1 (active low) |
| Pin produk 28 | I/O — User I/O pin (bank 2) |
| Pin produk 29 | I/O — User I/O pin (bank 2) |
| Pin produk 30 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 31 | I/O — User I/O pin (bank 2) |
| Pin produk 32 | GCLK3 — Global clock input 3 |
| Pin produk 33 | I/O — User I/O pin (bank 2) |
| Pin produk 34 | I/O — User I/O pin (bank 3) |
| Pin produk 35 | I/O — User I/O pin (bank 3) |
| Pin produk 36 | I/O — User I/O pin (bank 3) |
| Pin produk 37 | GND — Ground |
| Pin produk 38 | I/O — User I/O pin (bank 3) |
| Pin produk 39 | I/O — User I/O pin (bank 3) |
| Pin produk 40 | I/O — User I/O pin (bank 3) |
| Pin produk 41 | I/O — User I/O pin (bank 3) |
| Pin produk 42 | VCCIO2 — I/O bank 2 supply voltage |
| Pin produk 43 | I/O — User I/O pin (bank 3) |
| Pin produk 44 | GCLK4 — Global clock input 4 |
| Pin produk 45 | I/O — User I/O pin (bank 3) |
| Pin produk 46 | I/O — User I/O pin (bank 3) |
| Pin produk 47 | I/O — User I/O pin (bank 3) |
| Pin produk 48 | I/O — User I/O pin (bank 3) |
| Pin produk 49 | OE2 — Global output enable 2 (active low) |
| Pin produk 50 | I/O — User I/O pin (bank 3) |
| Pin produk 51 | I/O — User I/O pin (bank 3) |
| Pin produk 52 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 53 | I/O — User I/O pin (bank 3) |
| Pin produk 54 | I/O — User I/O pin (bank 3) |
| Pin produk 55 | I/O — User I/O pin (bank 4) |
| Pin produk 56 | I/O — User I/O pin (bank 4) |
| Pin produk 57 | GND — Ground |
| Pin produk 58 | I/O — User I/O pin (bank 4) |
| Pin produk 59 | I/O — User I/O pin (bank 4) |
| Pin produk 60 | I/O — User I/O pin (bank 4) |
| Pin produk 61 | I/O — User I/O pin (bank 4) |
| Pin produk 62 | I/O — User I/O pin (bank 4) |
| Pin produk 63 | I/O — User I/O pin (bank 4) |
| Pin produk 64 | VCCIO3 — I/O bank 3 supply voltage |
| Pin produk 65 | I/O — User I/O pin (bank 4) |
| Pin produk 66 | I/O — User I/O pin (bank 4) |
| Pin produk 67 | I/O — User I/O pin (bank 4) |
| Pin produk 68 | I/O — User I/O pin (bank 4) |
| Pin produk 69 | I/O — User I/O pin (bank 4) |
| Pin produk 70 | I/O — User I/O pin (bank 4) |
| Pin produk 71 | GND — Ground |
| Pin produk 72 | I/O — User I/O pin (bank 4) |
| Pin produk 73 | I/O — User I/O pin (bank 4) |
| Pin produk 74 | TDI — JTAG Test Data In |
| Pin produk 75 | TMS — JTAG Test Mode Select |
| Pin produk 76 | TCK — JTAG Test Clock |
| Pin produk 77 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 78 | I/O — User I/O pin (bank 4) |
| Pin produk 79 | I/O — User I/O pin (bank 4) |
| Pin produk 80 | I/O — User I/O pin (bank 4) |
| Pin produk 81 | I/O — User I/O pin (bank 4) |
| Pin produk 82 | I/O — User I/O pin (bank 4) |
| Pin produk 83 | I/O — User I/O pin (bank 4) |
| Pin produk 84 | VCCIO4 — I/O bank 4 supply voltage |
| Pin produk 85 | I/O — User I/O pin (bank 4) |
| Pin produk 86 | I/O — User I/O pin (bank 4) |
| Pin produk 87 | I/O — User I/O pin (bank 4) |
| Pin produk 88 | I/O — User I/O pin (bank 4) |
| Pin produk 89 | I/O — User I/O pin (bank 4) |
| Pin produk 90 | I/O — User I/O pin (bank 4) |
| Pin produk 91 | GND — Ground |
| Pin produk 92 | I/O — User I/O pin (bank 4) |
| Pin produk 93 | I/O — User I/O pin (bank 4) |
| Pin produk 94 | TDO — JTAG Test Data Out |
| Pin produk 95 | I/O — User I/O pin (bank 4) |
| Pin produk 96 | I/O — User I/O pin (bank 4) |
| Pin produk 97 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 98 | I/O — User I/O pin (bank 4) |
| Pin produk 99 | I/O — User I/O pin (bank 4) |
| Pin produk 100 | I/O — User I/O pin (bank 4) |
| Pin produk 101 | I/O — User I/O pin (bank 4) |
| Pin produk 102 | I/O — User I/O pin (bank 4) |
| Pin produk 103 | I/O — User I/O pin (bank 4) |
| Pin produk 104 | VCCIO1 — I/O bank 1 supply voltage (alternate pin) |
| Pin produk 105 | I/O — User I/O pin (bank 1) |
| Pin produk 106 | I/O — User I/O pin (bank 1) |
| Pin produk 107 | I/O — User I/O pin (bank 1) |
| Pin produk 108 | I/O — User I/O pin (bank 1) |
| Pin produk 109 | I/O — User I/O pin (bank 1) |
| Pin produk 110 | I/O — User I/O pin (bank 1) |
| Pin produk 111 | GND — Ground |
| Pin produk 112 | I/O — User I/O pin (bank 1) |
| Pin produk 113 | I/O — User I/O pin (bank 1) |
| Pin produk 114 | I/O — User I/O pin (bank 1) |
| Pin produk 115 | I/O — User I/O pin (bank 1) |
| Pin produk 116 | I/O — User I/O pin (bank 1) |
| Pin produk 117 | I/O — User I/O pin (bank 1) |
| Pin produk 118 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 119 | I/O — User I/O pin (bank 1) |
| Pin produk 120 | I/O — User I/O pin (bank 1) |
| Pin produk 121 | I/O — User I/O pin (bank 1) |
| Pin produk 122 | I/O — User I/O pin (bank 1) |
| Pin produk 123 | I/O — User I/O pin (bank 1) |
| Pin produk 124 | I/O — User I/O pin (bank 1) |
| Pin produk 125 | I/O — User I/O pin (bank 1) |
| Pin produk 126 | VCCIO2 — I/O bank 2 supply voltage (alternate pin) |
| Pin produk 127 | I/O — User I/O pin (bank 2) |
| Pin produk 128 | I/O — User I/O pin (bank 2) |
| Pin produk 129 | I/O — User I/O pin (bank 2) |
| Pin produk 130 | I/O — User I/O pin (bank 2) |
| Pin produk 131 | I/O — User I/O pin (bank 2) |
| Pin produk 132 | GND — Ground |
| Pin produk 133 | I/O — User I/O pin (bank 2) |
| Pin produk 134 | I/O — User I/O pin (bank 2) |
| Pin produk 135 | I/O — User I/O pin (bank 2) |
| Pin produk 136 | I/O — User I/O pin (bank 2) |
| Pin produk 137 | I/O — User I/O pin (bank 2) |
| Pin produk 138 | I/O — User I/O pin (bank 2) |
| Pin produk 139 | VCCINT — Core supply voltage (3.3 V) |
| Pin produk 140 | I/O — User I/O pin (bank 2) |
| Pin produk 141 | I/O — User I/O pin (bank 2) |
| Pin produk 142 | I/O — User I/O pin (bank 2) |
| Pin produk 143 | I/O — User I/O pin (bank 2) |
| Pin produk 144 | I/O — User I/O pin (bank 2) |
Aplikasi Umum
EPM7256AETC144-5N cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk EPM7256AETC144-5N — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- Densest MAX 7000A device at -5 speed grade in TQFP-144 (vsEPM7256AETC144-7N)
- 256 macro cells - 2x the logic density (vsEPM7128AETC144-7N)
- Multi-voltage I/O banks for direct mixed-rail interfacing (vsEPM7192EQC160-20)
Catatan Desain
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.
Informasi Konformitas
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.
