EPM7256AETI100-7N - 256-MacroCell MAX 7000A CPLD, 100TQFP | Intel
部品番号: EPM7256AETI100-7N ⚠ ラストタイムバイ| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $49.63 | $49.63 |
| 10 | $45.2 | $452.00 |
| 100 | $39.5 | $3,950.00 |
| 250 | $36.8 | $9,200.00 |
| 500 | $34.2 | $17,100.00 |
EPM7256AETI100-7N 概要
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that sits between simple PAL/GAL arrays and larger FPGAs. Architecturally, a CPLD partitions logic into multiple macrocell-PLA blocks connected by a central interconnect matrix, giving predictable, deterministic timing well suited to control-plane logic, address decoding, and state-machine implementation. In the system hierarchy it belongs to the programmable-logic family, alongside SPLDs, FPGAs, and PALs, and is commonly classified as a power-management and glue-logic companion to microcontrollers, microprocessors, and bus interfaces.
Key features of the EPM7256AETI100-7N include 256 macrocells, 5 K usable gates, 84 user I/O, in-system programmability via JTAG, and IEEE Std 1149.1 boundary-scan test support. The MAX 7000A architecture provides pin-locking for incremental design changes and individual output enable control per macrocell, allowing wide design reuse across board revisions. The 100-pin TQFP (1.0 mm pitch, 14 mm x 14 mm body) package is a JEDEC-standard surface-mount outline well suited to industrial assembly.
Typical applications include address decoding and bus-interface bridging, state-machine controllers, peripheral glue logic in embedded systems, and reconfigurable I/O expansion for microcontrollers and DSPs. Designers also use MAX 7000A CPLDs to replace discrete 74-series logic, reducing board area and BOM cost. When using this device, ensure that the JTAG chain is properly terminated and that input signals respect the 3.3 V VCCIO supply; a 0.1 uF decoupling capacitor should be placed adjacent to each supply pin.
This page synthesizes distributor pricing, drop-in alternatives within the MAX 7000A family, and practical design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: EPM7256AETI100-7N — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: EPM7256AETI100-7N （同一形状・フットプリント） — 相違点: Package, Operating Temperature, RoHS Status, Process Technology, Programmability.
クイック比較ツール — 並列比較する代替部品を選択:
EPM7256AETI100-7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
EPM7256AETC100-10N
✅ ドロップイン✓ 在庫あり
$13.1 / 個
データシートを見る →EPM7256AEFI100-7
✅ ドロップイン✓ 在庫あり
$65.4 / 個
データシートを見る →EPM7256AETI100-10N
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
EPM7256AEFC100-7
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$15.2 / 個
データシートを見る →EPM7128AETI100-7N
✅ ドロップイン✓ 在庫あり
$28.5 / 個
データシートを見る →EPM7256AETI100-7N 最大定格＆電気的特性
| Family | MAX 7000A |
| Device Type | CPLD - Complex Programmable Logic Device |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| Maximum User I/O | 84 |
| Logic Elements / Blocks | 16 Logic Array Blocks |
| Maximum Operating Frequency | 126.6 MHz |
| Propagation Delay (tPD) | 7.5 ns |
| Core Supply Voltage (VCCINT) | 3.3 V |
| I/O Supply Voltage (VCCIO) | 3.3 V |
| Technology | CMOS, EEPROM-based configuration |
| Programmability | In-system programmable via JTAG (IEEE 1149.1) |
| パッケージ | 100-pin TQFP (TQ100, 14x14 mm, 0.5 mm pitch) |
| 実装タイプ | Surface Mount |
| 動作温度 | -40C to +85C (Industrial) |
| MSLレベル | 3 (168 hours) |
| RoHS ステータス | Compliant |
EPM7256AETI100-7N 100-pin tqfp (tq100, 14x14 mm, 0.5 mm pitch) ピン配置ガイド
EPM7256AETI100-7N (100-pin tqfp (tq100, 14x14 mm, 0.5 mm pitch) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: EPM7256AETI100-7N.
詳細は データシート をご参照ください。
主な用途
EPM7256AETI100-7N の用途: 6 件s: Address Decoding and Bus Interfacing, State-Machine and Control Logic, Peripheral Glue Logic Replacement, I/O Expansion and Voltage Translation, DSP and Microcontroller Co-Processor, Legacy Industrial System Modernization.
Address Decoding and Bus Interfacing
The EPM7256AETI100-7N excels at address decoding and bus-interface bridging between microprocessors, microcontrollers, and peripherals. With 256 macrocells and 84 user I/O, it can decode wide address buses (24-bit or larger) into dozens of chip-select lines in a single device, replacing banks of 74-series glue logic. The MAX 7000A deterministic timing of 7.5 ns tPD guarantees that chip-select assertions stay within one clock cycle, critical for memory and peripheral access without wait states. In-system programmability via JTAG (IEEE 1149.1) lets designers modify the decoding map after PCB layout, while pin-locking preserves the existing footprint. Compared to discrete 74HC138/139 decoders, this CPLD reduces board area by 70% and improves EMI by eliminating long parallel trace runs.
おすすめ
State-Machine and Control Logic
The EPM7256AETI100-7N is widely used to implement finite-state machines, sequencers, and protocol controllers in embedded systems. The MAX 7000A macrocell architecture provides a programmable AND/OR array with a flip-flop per macrocell, ideal for state-machine encoding schemes including one-hot, binary, and Gray. With 126.6 MHz fCNT, the device runs state machines at speeds sufficient to handle UART, SPI, I2C, and custom bit-banged protocols in real time. The 5,000 usable gates handle complex multi-state designs such as motor-control sequencers, industrial protocol bridges, and test-pattern generators. Industrial -40C to +85C temperature rating supports factory-floor deployments, while deterministic timing simplifies Worst-Case Timing Analysis (WCTA) for safety-critical applications.
おすすめ
Peripheral Glue Logic Replacement
Designers replace discrete 74HC/74AHC glue-logic gates with the EPM7256AETI100-7N to consolidate dozens of small-scale integration (SSI) packages into a single programmable device. 256 macrocells equate to roughly 30 to 40 standard SSI packages worth of logic, dramatically reducing PCB area, BOM count, and assembly cost. The 100-pin TQFP footprint provides 84 user I/O that can be reconfigured at any time via JTAG, enabling late-stage design changes without board respins. Compared to a discrete-logic implementation, this CPLD also improves signal integrity by eliminating long SSI-to-SSI trace runs and centralizing timing within a single deterministic device. Industrial temp and 3.3 V operation match modern low-power system requirements.
おすすめ
I/O Expansion and Voltage Translation
The EPM7256AETI100-7N serves as a flexible I/O expander and 5 V to 3.3 V level translator between legacy and modern logic families. Its 3.3 V I/O accept 5 V TTL-level inputs (per MAX 7000A datasheet), so the same device can bridge a 5 V microcontroller bus to a 3.3 V peripheral such as an SDRAM, DSP, or modern SoC. With 84 user I/O, one CPLD can replace multiple bus-switch or level-translator ICs, simplifying the BOM and freeing board area. In-system programmability enables last-minute I/O mapping changes during board bring-up. Industrial temperature rating supports outdoor and factory deployments where mixed-voltage signaling is common.
おすすめ
DSP and Microcontroller Co-Processor
The EPM7256AETI100-7N acts as a hardware co-processor for DSPs and microcontrollers, offloading real-time tasks such as DMA sequencing, FIFO control, custom timer chains, and interrupt aggregation. The 126.6 MHz internal counter rate and 7.5 ns tPD propagation delay handle timing-critical peripherals without burdening the main processor. Designers implement glue logic between a TI C6000 DSP, NXP PowerPC, or ARM Cortex-M microcontroller and external memory or ADC/DAC devices, freeing CPU cycles for algorithmic work. The deterministic timing model of MAX 7000A simplifies Worst-Case Timing Analysis (WCTA) compared with LUT-based FPGAs, important for safety-critical or hard-real-time applications.
おすすめ
Legacy Industrial System Modernization
The EPM7256AETI100-7N is commonly used to modernize legacy industrial systems by replacing obsolete or end-of-life discrete logic and PAL/GAL devices. Industrial machines, PLCs, and test equipment built in the 1990s and 2000s often rely on MAX 7000A CPLDs for control logic; new identical parts keep these systems running without costly redesign or re-certification. The in-system programmability via JTAG enables field firmware updates via boundary-scan, useful for upgrades during scheduled maintenance windows. The -40C to +85C industrial temperature rating and 3.3 V operation suit factory-floor environments with wide thermal variation. For long-life industrial platforms, the part's established reliability track record and pin-compatible MAX II Z migration path are key selection criteria.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: EPM7256AETI100-7N — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | EPM7256AETI100-7 | EPM7256AETC100-10N | EPM7256AEFI100-7 | EPM7128AETI100-7N |
|---|---|---|---|---|---|
| Package | TQFP-100 (14x14 mm, 0.5 mm pitch) | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Brand | Intel (formerly Altera) | Intel - same | Intel - same | Intel - same | Intel - same |
| Macrocells | 256 | 256 - same | 256 - same | 256 - same | 128 (-50%) |
| Usable Gates | 5,000 | 5,000 - same | 5,000 - same | 5,000 - same | 2,500 (-50%) |
| User I/O | 84 | 84 - same | 84 - same | 84 - same | 84 - same |
| tPD (Propagation Delay) | 7.5 ns | 7.5 ns - same | 10 ns (slower) | 7.5 ns - same | 7.5 ns - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | 0C to +70C (Commercial) | -40C to +85C - same | -40C to +85C - same |
| RoHS Compliance | Yes (lead-free, -N suffix) | No (tin-lead finish) | Yes (lead-free) | Varies | Yes (lead-free) |
| Core Voltage | 3.3 V | 3.3 V - same | 3.3 V - same | 3.3 V - same | 3.3 V - same |
| Lifecycle Status | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy | Last-Time-Buy |
主な差別化要因
- 256 macrocells with 84 user I/O in compact 100-pin TQFP （vs EPM7128AETI100-7N)
- Industrial temperature rating with lead-free RoHS finish （vs EPM7256AETC100-10N)
- Faster 7.5 ns tPD versus 10 ns grade in same package （vs EPM7256AETI100-10N)
- Drop-in compatibility with non-N finish for legacy designs （vs EPM7256AETI100-7)
設計ノート
The EPM7256AETI100-7N requires a clean 3.3 V supply on VCCINT and VCCIO. Place a 0.1 uF decoupling capacitor adjacent to every supply pin, with a bulk 10 uF tantalum or ceramic at the board entry. According to the MAX 7000A datasheet, inrush current during configuration can reach several hundred mA; ensure the regulator has adequate headroom and that the supply ramp is monotonic to avoid partial-configuration latch-up.
Route JTAG signals (TDI, TDO, TMS, TCK) with controlled impedance and keep them short. Per IEEE 1149.1, place a 10 kohm pull-up on TCK and TMS to prevent spurious clocking during board reset. The TRST pin should be tied to VCCIO through a 1 kohm resistor per the MAX 7000A datasheet, or pulled low if not used. Keep JTAG traces away from high-frequency switching signals to avoid programming failures.
The 100-pin TQFP has 0.5 mm pitch, requiring fine-pitch PCB layout with 4 mil traces and 4 mil spaces typical. Use a 4-layer PCB with continuous ground plane beneath the device to control impedance and provide thermal dissipation. Estimated: at 100 percent resource utilization the device may dissipate 0.5 W to 1 W; an exposed copper pour of at least 1 square inch on top and bottom layers is recommended for thermal relief.
Do not apply 5 V to I/O pins when VCCIO is 3.3 V; the absolute-maximum VCCIO + 0.5 V or 4.0 V limit applies. Per the MAX 7000A datasheet, inputs above this limit will forward-bias ESD clamp diodes and may damage the device. For mixed-voltage designs, use external bus switches or level translators. Also avoid leaving user I/O floating; unused pins should be configured as outputs driving low to minimize supply current.
コンプライアンス情報
RoHS compliant per Intel/Altera product page (lead-free, -N suffix). Not AEC-Q100 qualified - the MAX 7000A family does not offer an automotive-temp variant. Conflict-minerals compliant per Intel CMRT filings.
