EPM7256AETC144-10N - MAX 7000A 256-Macro CPLD, 10ns TQFP-144 | Intel
부품 번호: EPM7256AETC144-10N ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.2 | $252.00 |
| 100 | $21.85 | $2,185.00 |
| 500 | $18.4 | $9,200.00 |
| 1,000 | $15.95 | $15,950.00 |
EPM7256AETC144-10N 개요
A Complex Programmable Logic Device (CPLD) is a non-volatile, instantly-on programmable logic IC that combines multiple PAL-like logic blocks on a single die, wired together by a programmable interconnect matrix. In the system hierarchy it sits between simple gate arrays and full FPGAs: it provides deterministic timing, sub-15 ns propagation delays, and zero-configuration power-up, making it ideal for bus decoding, address mapping, state-machine control, and I/O expansion rather than DSP/algorithmic workloads.
Key features of this part include 256 macro cells distributed across 16 logic array blocks, 4 input lines per macro cell, a global 3.3V core supply with 5V-tolerant I/O, pin-to-pin tPD of 10 ns, and a maximum internal operating frequency of 95.2 MHz. The device is pin-compatible with the 5.0V MAX 7000S family, allowing board-level migration. Extended industrial temperature range support and built-in IEEE 1149.1 JTAG boundary-scan test complete the feature set.
Architecturally, the MAX 7000A implements a classic AND-OR (product-term) logic fabric backed by EEPROM configuration cells, ensuring instant-on behaviour with no bitstream load time. The 3.3V core reduces power consumption versus legacy 5V PLDs, and the ISP_Done bit guarantees complete programming verification on every flash cycle.
Typical applications include telecommunications line cards, peripheral bus bridging (PCI/ISA/address decoding), industrial control boards, and legacy 5V-system glue-logic replacement. When designing with the EPM7256AETC144-10N, designers must ensure the JTAG chain is correctly terminated with TCK pull-down and TMS pull-up resistors per the datasheet, and must respect the maximum I/O toggle rate to avoid ground-bounce on heavily-loaded outputs.
This page synthesizes distributor pricing, drop-in speed-grade alternatives, application companions, and practical design notes not found in the manufacturer datasheet alone.
드롭인 대체품: EPM7256AETC144-10N — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: EPM7256AETC144-10N (동일 폼 팩터 및 풋프린트) — 차이점: Package, Operating Temperature, Programming Interface, Usable Gates, Configuration Memory.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
EPM7256AETC144-10
✅ 드롭인✓ 재고 있음
$31.4 / 개
데이터시트 보기 →EPM7256AETC144-10N 최대 정격 & 전기적 특성
| Family | MAX 7000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Usable Gates | 5,000 |
| Macro Cells | 256 |
| Logic Array Blocks | 16 |
| Maximum User I/O Pins | 120 (in 144-pin TQFP) |
| Pin-to-Pin Propagation Delay (tPD) | 10 ns |
| Maximum Internal Frequency | 95.2 MHz |
| Supply Voltage (Core) | 3.3 V |
| I/O Voltage Tolerance | 5 V-tolerant |
| Configuration Memory | EEPROM (non-volatile, in-system programmable) |
| Programming Interface | IEEE 1149.1 JTAG (ISP) |
| 패키지 | TQFP-144 (ETC suffix) |
| 실장 유형 | Surface Mount |
| 동작 온도 | -40C to +85C (industrial) |
| Technology | CMOS, EEPROM-based |
| Pin Compatibility | Pin-compatible with 5.0V MAX 7000S family |
EPM7256AETC144-10N tqfp-144 (etc suffix) 핀 구성 가이드
EPM7256AETC144-10N(tqfp-144 (etc suffix) 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: EPM7256AETC144-10N.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
EPM7256AETC144-10N 적합 용도: 6 애플리케이션s: PCI/ISA Bus Address Decoding, Telecommunications Line Card Glue Logic, Industrial Control State Machine, Legacy 5V System Glue Logic Replacement, Peripheral Interface Bridging, Test Equipment Front Panel Logic.
PCI/ISA Bus Address Decoding
The EPM7256AETC144-10N fits PCI/ISA bus address decoding applications with its 256 macro cells and 10 ns pin-to-pin propagation delay. Decoding multi-channel bus addresses within a single clock period requires the deterministic sub-15 ns tPD that this MAX 7000A device delivers. With 120 user I/O available in the 144-pin TQFP, designers can implement multiple decoder channels (chip-select logic, interrupt acknowledge, DMA acknowledge) on one device. The non-volatile EEPROM configuration means the decoder is active at power-on without any boot delay - critical for ISA bus timing where the CPU asserts address lines within nanoseconds of reset de-assertion. The 5V-tolerant I/O interfaces directly with 5V PCI/ISA signalling without external level shifters, simplifying board design.
추천
Telecommunications Line Card Glue Logic
The EPM7256AETC144-10N is well suited for telecommunications line card glue-logic applications where deterministic timing and high I/O density are required. Its 120 user I/O pins handle multi-channel TDM (Time Division Multiplexing) bus aggregation, while the 95.2 MHz maximum internal frequency supports clock rates up to OC-1/STM-0. The 3.3V core reduces power consumption versus 5V-only predecessors, important for densely populated central-office line cards. Its instant-on EEPROM configuration eliminates bitstream load delays, ensuring the device is fully operational at the moment the line card powers up. JTAG-based in-system programmability allows field upgrades of the glue-logic personality without removing the line card from service.
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Industrial Control State Machine
Industrial control applications rely on the EPM7256AETC144-10N's combination of 256 macro cells, 16 logic array blocks, and deterministic 10 ns tPD to implement complex state machines for PLCs, motor controllers, and process automation. The 16 LAB architecture allows partitioning of the design into independent state machines - e.g. one per axis of a multi-axis motion controller. The extended industrial temperature range (-40C to +85C) ensures reliable operation in factory-floor environments. Five-volt tolerant I/O interfaces directly with industrial sensors and 24V optically-isolated input modules via simple resistor dividers. Non-volatile configuration retains the state machine personality through power cycles, eliminating any boot-time programming sequence.
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Legacy 5V System Glue Logic Replacement
Replacing legacy 5V PAL/GAL glue logic with the EPM7256AETC144-10N is straightforward because the device is pin-compatible with the 5.0V MAX 7000S family, allowing board-level migration without PCB changes. Engineers can consolidate dozens of discrete PAL chips into a single 256-macro-cell CPLD, dramatically reducing board area and power consumption. The 5V-tolerant I/O ensures direct interface with remaining 5V components on the board. With 95.2 MHz internal frequency and 10 ns tPD, the device meets or improves the timing margins of the legacy 5V PLDs it replaces. The JTAG in-system programmability enables post-assembly logic updates, eliminating socketed-PAL rework cycles.
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Peripheral Interface Bridging
The EPM7256AETC144-10N excels at peripheral interface bridging applications such as connecting microprocessors to memory banks, FIFOs, or peripheral ASICs through custom glue logic. With 120 user I/O, the device can bridge between a 32-bit microprocessor bus (32 data + 24 address + 10 control lines) and multiple peripherals simultaneously. The 10 ns tPD maintains bus timing margins even at 33 MHz local bus frequencies. Multiple logic array blocks allow independent bridging domains, useful when interfacing asynchronous peripherals that require separate timing islands. Non-volatile configuration means the bridge is operational immediately at system reset without any boot delay.
추천
Test Equipment Front Panel Logic
Test and measurement equipment such as oscilloscopes, logic analyzers, and signal generators employ the EPM7256AETC144-10N for front-panel control logic - LED multiplexing, switch debouncing, rotary encoder decoding, and LCD segment driving. The 256 macro cells easily handle all these functions plus custom instrument-specific glue logic in a single device. With 120 user I/O available, the CPLD connects directly to large front-panel button/keypad matrices and 7-segment display arrays without external mux/demux chips. The deterministic 10 ns propagation delay ensures button-press detection without software debounce latency. Extended temperature range ensures reliable operation in laboratory and field-test environments.
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추천 제품 요약
엔지니어링 참조 데이터: EPM7256AETC144-10N — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | EPM7256AETC144-10 | EPM7256AETC100-10N | EPM7256AEFC100-10N | EPM7256AEFI100-7 | EPM7256AEFC256-5N |
|---|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | TQFP-144 | TQFP-144 (same) | TQFP-100 (different) | TQFP-100 (different) | TQFP-100 (different) | BGA-256 (different) |
| Macro Cells | 256 | 256 | 256 | 256 | 256 | 256 |
| Pin-to-Pin Delay (tPD) | 10 ns | 10 ns (same) | 10 ns (same) | 10 ns (same) | 7 ns (faster) | 5 ns (faster) |
| Usable Gates | 5,000 | 5,000 | 5,000 | 5,000 | 5,000 | 5,000 |
| Finish / Lead-Free | Lead-free (N suffix) | Leaded (no N suffix) | Lead-free | Lead-free | Lead-free | Lead-free |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Supply Voltage | 3.3 V core, 5 V-tolerant I/O | 3.3 V core, 5 V-tolerant | 3.3 V core, 5 V-tolerant | 3.3 V core, 5 V-tolerant | 3.3 V core, 5 V-tolerant | 3.3 V core, 5 V-tolerant |
주요 차별점
- Same silicon die as EPM7256AETC144-10, different lead finish (vs EPM7256AETC144-10)
- Faster pin-to-pin delay than EPM7256AETC144-10 (vs EPM7256AEFI100-7)
- Higher pin density than 100-pin TQFP variants (vs EPM7256AETC100-10N)
설계 노트
The 144-pin TQFP package requires careful PCB layout: provide a continuous ground plane beneath the device, use 0.1 uF decoupling capacitors on every VCCINT/VCCIO pin pair within 5 mm of the package, and route all JTAG signals (TCK, TMS, TDI, TDO) as a matched-length group with 10 kOhm pull-up on TMS and 1 kOhm pull-down on TCK per Altera MAX 7000A design guidelines. Maintain at least 8 mil trace width and 8 mil spacing for signal integrity on the 0.5 mm pitch TQFP land pattern.
Do not exceed the maximum I/O toggle rate of approximately 100 MHz per output - ground bounce on heavily-loaded outputs can cause logic errors. The ISP_Done bit must be checked after in-system programming to verify configuration completion; do not assume programming succeeded without polling this status bit. When migrating from MAX 7000S (5V) to MAX 7000A (3.3V), ensure all connected logic is 5V-tolerant; connecting 3.3V-only signals to non-tolerant 5V inputs will damage the device.
Estimated: at 95.2 MHz internal frequency with all 256 macro cells active, typical core current consumption is approximately 100-300 mA from VCCINT (3.3V). Bulk decoupling of 33 uF tantalum plus 0.1 uF ceramic on each VCCINT pin is recommended. I/O current scales with toggle rate and load capacitance; for capacitive loads above 50 pF, add 22 Ohm series resistors to limit edge-rate-induced ground bounce. Total board-level power budget should allocate at least 1.5W for the CPLD plus margin for switching transients.
규정 준수 정보
RoHS compliant by N-suffix designation per Altera ordering nomenclature. REACH, halogen-free, and conflict-minerals status not explicitly stated in the verified web data and marked unknown.
