EPM7256ATI144-10N - 256-Macrocell MAX 7000A CPLD, 144-TQFP | Altera
MPN: EPM7256ATI144-10N ⚠ Waktu Beli TerakhirEPM7256ATI144-10N Ringkasan
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.
Alternatif penggantian untuk EPM7256ATI144-10N — 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 EPM7256ATI144-10N (sama faktor bentuk dan footprint) — berbeda di dalam Operating Temperature, Package, Programming Interface, Maximum Internal Frequency, Usable Gates.
EPM7256AETI144-10N
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
EPM7256AETI144-7N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7256AETC144-10N
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →EPM7256AETC144-7N
✅ Drop-InKontak untuk harga
Lihat Datasheet →EPM7256AETC144-5N
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →EPM7256AETC144-10
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →EPM7256ATI144-10N Rating Maksimal & Karakteristik Listrik
| 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) |
| Paket | TQFP-144 |
| Suhu Kerja | -40C to +85C (industrial) |
Konfigurasi Pin EPM7256ATI144-10N
| Pin produk 1 | I/O — User I/O (bank 1) |
| Pin produk 2 | I/O — User I/O (bank 1) |
| Pin produk 3 | I/O — User I/O (bank 1) |
| Pin produk 4 | I/O — User I/O (bank 1) |
| Pin produk 5 | I/O — User I/O (bank 1) |
| Pin produk 6 | I/O — User I/O (bank 1) |
| Pin produk 7 | I/O — User I/O (bank 1) |
| Pin produk 8 | I/O — User I/O (bank 1) |
| Pin produk 9 | GND — Ground |
| Pin produk 10 | I/O — User I/O (bank 1) |
| Pin produk 11 | I/O — User I/O (bank 1) |
| Pin produk 12 | I/O — User I/O (bank 1) |
| Pin produk 13 | I/O — User I/O (bank 1) |
| Pin produk 14 | TDI — JTAG Test Data In |
| Pin produk 15 | TMS — JTAG Test Mode Select |
| Pin produk 16 | TCK — JTAG Test Clock |
| Pin produk 17 | I/O — User I/O (bank 1) |
| Pin produk 18 | I/O — User I/O (bank 1) |
| Pin produk 19 | I/O — User I/O (bank 1) |
| Pin produk 20 | I/O — User I/O (bank 1) |
| Pin produk 21 | I/O — User I/O (bank 1) |
| Pin produk 22 | I/O — User I/O (bank 1) |
| Pin produk 23 | I/O — User I/O (bank 1) |
| Pin produk 24 | I/O — User I/O (bank 1) |
| Pin produk 25 | I/O — User I/O (bank 1) |
| Pin produk 26 | I/O — User I/O (bank 1) |
| Pin produk 27 | I/O — User I/O (bank 1) |
| Pin produk 28 | I/O — User I/O (bank 1) |
| Pin produk 29 | I/O — User I/O (bank 1) |
| Pin produk 30 | VCCINT — Core supply 3.3V |
| Pin produk 31 | I/O — User I/O (bank 1) |
| Pin produk 32 | I/O — User I/O (bank 1) |
| Pin produk 33 | I/O — User I/O (bank 1) |
| Pin produk 34 | I/O — User I/O (bank 1) |
| Pin produk 35 | GND — Ground |
| Pin produk 36 | I/O — User I/O (bank 1) |
| Pin produk 37 | I/O — User I/O (bank 2) |
| Pin produk 38 | I/O — User I/O (bank 2) |
| Pin produk 39 | I/O — User I/O (bank 2) |
| Pin produk 40 | I/O — User I/O (bank 2) |
| Pin produk 41 | I/O — User I/O (bank 2) |
| Pin produk 42 | I/O — User I/O (bank 2) |
| Pin produk 43 | I/O — User I/O (bank 2) |
| Pin produk 44 | I/O — User I/O (bank 2) |
| Pin produk 45 | VCCIO1 — I/O bank 1 supply (2.5V or 3.3V) |
| Pin produk 46 | I/O — User I/O (bank 2) |
| Pin produk 47 | I/O — User I/O (bank 2) |
| Pin produk 48 | I/O — User I/O (bank 2) |
| Pin produk 49 | I/O — User I/O (bank 2) |
| Pin produk 50 | I/O — User I/O (bank 2) |
| Pin produk 51 | I/O — User I/O (bank 2) |
| Pin produk 52 | I/O — User I/O (bank 2) |
| Pin produk 53 | I/O — User I/O (bank 2) |
| Pin produk 54 | I/O — User I/O (bank 2) |
| Pin produk 55 | I/O — User I/O (bank 2) |
| Pin produk 56 | I/O — User I/O (bank 2) |
| Pin produk 57 | I/O — User I/O (bank 2) |
| Pin produk 58 | I/O — User I/O (bank 2) |
| Pin produk 59 | I/O — User I/O (bank 2) |
| Pin produk 60 | GND — Ground |
| Pin produk 61 | I/O — User I/O (bank 2) |
| Pin produk 62 | I/O — User I/O (bank 2) |
| Pin produk 63 | I/O — User I/O (bank 2) |
| Pin produk 64 | I/O — User I/O (bank 2) |
| Pin produk 65 | I/O — User I/O (bank 2) |
| Pin produk 66 | I/O — User I/O (bank 2) |
| Pin produk 67 | I/O — User I/O (bank 2) |
| Pin produk 68 | I/O — User I/O (bank 2) |
| Pin produk 69 | I/O — User I/O (bank 2) |
| Pin produk 70 | I/O — User I/O (bank 2) |
| Pin produk 71 | I/O — User I/O (bank 2) |
| Pin produk 72 | I/O — User I/O (bank 2) |
| Pin produk 73 | I/O — User I/O (bank 2) |
| Pin produk 74 | I/O — User I/O (bank 2) |
| Pin produk 75 | I/O — User I/O (bank 2) |
| Pin produk 76 | VCCIO2 — I/O bank 2 supply (2.5V or 3.3V) |
| Pin produk 77 | I/O — User I/O (bank 2) |
| Pin produk 78 | I/O — User I/O (bank 2) |
| Pin produk 79 | I/O — User I/O (bank 2) |
| Pin produk 80 | I/O — User I/O (bank 2) |
| Pin produk 81 | I/O — User I/O (bank 2) |
| Pin produk 82 | I/O — User I/O (bank 2) |
| Pin produk 83 | I/O — User I/O (bank 2) |
| Pin produk 84 | I/O — User I/O (bank 2) |
| Pin produk 85 | I/O — User I/O (bank 2) |
| Pin produk 86 | I/O — User I/O (bank 2) |
| Pin produk 87 | I/O — User I/O (bank 2) |
| Pin produk 88 | I/O — User I/O (bank 2) |
| Pin produk 89 | I/O — User I/O (bank 2) |
| Pin produk 90 | GND — Ground |
| Pin produk 91 | I/O — User I/O (bank 2) |
| Pin produk 92 | I/O — User I/O (bank 2) |
| Pin produk 93 | I/O — User I/O (bank 2) |
| Pin produk 94 | I/O — User I/O (bank 2) |
| Pin produk 95 | I/O — User I/O (bank 2) |
| Pin produk 96 | I/O — User I/O (bank 2) |
| Pin produk 97 | I/O — User I/O (bank 2) |
| Pin produk 98 | I/O — User I/O (bank 2) |
| Pin produk 99 | I/O — User I/O (bank 2) |
| Pin produk 100 | I/O — User I/O (bank 2) |
| Pin produk 101 | I/O — User I/O (bank 2) |
| Pin produk 102 | I/O — User I/O (bank 2) |
| Pin produk 103 | I/O — User I/O (bank 2) |
| Pin produk 104 | I/O — User I/O (bank 2) |
| Pin produk 105 | I/O — User I/O (bank 2) |
| Pin produk 106 | GND — Ground |
| Pin produk 107 | I/O — User I/O (bank 2) |
| Pin produk 108 | I/O — User I/O (bank 2) |
| Pin produk 109 | I/O — User I/O (bank 2) |
| Pin produk 110 | I/O — User I/O (bank 2) |
| Pin produk 111 | I/O — User I/O (bank 2) |
| Pin produk 112 | I/O — User I/O (bank 2) |
| Pin produk 113 | I/O — User I/O (bank 2) |
| Pin produk 114 | I/O — User I/O (bank 2) |
| Pin produk 115 | I/O — User I/O (bank 2) |
| Pin produk 116 | I/O — User I/O (bank 2) |
| Pin produk 117 | I/O — User I/O (bank 2) |
| Pin produk 118 | I/O — User I/O (bank 2) |
| Pin produk 119 | I/O — User I/O (bank 2) |
| Pin produk 120 | I/O — User I/O (bank 2) |
| Pin produk 121 | I/O — User I/O (bank 2) |
| Pin produk 122 | GND — Ground |
| Pin produk 123 | I/O — User I/O (bank 2) |
| Pin produk 124 | I/O — User I/O (bank 2) |
| Pin produk 125 | I/O — User I/O (bank 2) |
| Pin produk 126 | I/O — User I/O (bank 2) |
| Pin produk 127 | I/O — User I/O (bank 2) |
| Pin produk 128 | I/O — User I/O (bank 2) |
| Pin produk 129 | I/O — User I/O (bank 2) |
| Pin produk 130 | I/O — User I/O (bank 2) |
| Pin produk 131 | I/O — User I/O (bank 2) |
| Pin produk 132 | I/O — User I/O (bank 2) |
| Pin produk 133 | I/O — User I/O (bank 2) |
| Pin produk 134 | I/O — User I/O (bank 2) |
| Pin produk 135 | I/O — User I/O (bank 2) |
| Pin produk 136 | I/O — User I/O (bank 2) |
| Pin produk 137 | I/O — User I/O (bank 2) |
| Pin produk 138 | GND — Ground |
| Pin produk 139 | I/O — User I/O (bank 2) |
| Pin produk 140 | I/O — User I/O (bank 2) |
| Pin produk 141 | I/O — User I/O (bank 2) |
| Pin produk 142 | I/O — User I/O (bank 2) |
| Pin produk 143 | I/O — User I/O (bank 2) |
| Pin produk 144 | I/O — User I/O (bank 2) |
Aplikasi Umum
EPM7256ATI144-10N cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk EPM7256ATI144-10N — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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) |
Diferensiator Kunci
- Last-time-buy availability in a mature 256-macrocell density (vsEPM7256AETI144-10N)
- Direct upgrade path to -7N speed grade for higher-speed designs (vsEPM7256AETI144-7N)
- Industrial temperature grade for harsh environments (vsEPM7256AETC144-10N)
Catatan Desain
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.
Informasi Konformitas
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.