EPM7256AETC100-7 - 256-Macrocell MAX 7000A CPLD, 7.5ns TQFP-100 | Intel
MPN: EPM7256AETC100-7 ✗ اختتامِ زندگیEPM7256AETC100-7 جائزہ
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like macrocell arrays on a single chip with predictable, deterministic timing. CPLDs sit in the broader taxonomy of programmable logic devices (PLD -> CPLD/FPGA -> logic IC -> integrated circuit), filling the niche between simple gate arrays and high-density FPGAs. They are favored for glue logic, bus interfacing, state-machine control, and power-up instant-on applications where deterministic timing and in-system programmability are required.
The EPM7256AETC100-7 features 256 macrocells organized in logic array blocks (LABs), with each macrocell containing a programmable AND/OR array and a configurable flip-flop. The device supports in-system programmability (ISP) via JTAG (IEEE 1149.1), eliminating the need for a separate programmer. Its 3.3 V core supply with 5 V tolerant I/O on selected pins enables easy interfacing with mixed-voltage systems, while the 7.5 ns tPD supports high-speed control applications at frequencies up to 126.6 MHz.
Typical applications include bus interface bridging (PCI, ISA, VME), peripheral glue logic, address decoding and chip-select generation, state-machine controllers, and power-up sequencing logic in microcontroller and ASIC systems. The MAX 7000A architecture also includes programmable interconnect switches, user-defined macrocell flip-flop clocks, and a global clear pin for synchronous design initialization.
When designing with this part, note that the device has been classified as obsolete/end-of-life by Intel - consider the EPM7256AETC100-7N or EPM7256AETI100-7N variants for new designs. Verify the tPD speed grade (7 = 7.5 ns) and temperature grade (C = commercial 0 to 70C) match your application requirements before substituting.
This page synthesizes distributor pricing, pin-compatible MAX 7000A drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل EPM7256AETC100-7 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں EPM7256AETC100-7 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Operating Temperature, Series, Process Technology, Programming Interface.
EPM7256AETC100-10N
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPM7256AETC100-7N
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPM7256AETI100-7
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
EPM7256AETC100-5N
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPM7256AEFC100-7
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPM7256AEFC100-10N
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →EPM7256AETC100-7 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Family | MAX 7000A |
| Series | EPM7256 |
| Device Type | CPLD - Complex Programmable Logic Device |
| Technology | EEPROM-based, CMOS |
| Macrocells | 256 |
| Usable Gates | 5,000 |
| Number of I/Os | 84 |
| Number of Logic Array Blocks (LABs) | 16 |
| Core Supply Voltage | 3.3 V |
| Pin-to-Pin Delay (tPD) | 7.5 ns |
| Maximum Operating Frequency | 126.6 MHz |
| آپریٹنگ درجہ حرارت | 0C to +70C (Commercial) |
| پیکیج | TQFP-100 (ET100) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Programming Interface | JTAG (IEEE 1149.1) - In-System Programmable |
| RoHS اسٹیٹس | Unknown - part marked obsolete |
| میموری ٹائپ | EEPROM (non-volatile) |
EPM7256AETC100-7 پن کنفیگریشن
| پن 1 | I/O — User I/O pin (bank 1) |
| پن 2 | I/O — User I/O pin (bank 1) |
| پن 3 | I/O — User I/O pin (bank 1) |
| پن 4 | I/O — User I/O pin (bank 1) |
| پن 5 | I/O — User I/O pin (bank 1) |
| پن 6 | I/O — User I/O pin (bank 1) |
| پن 7 | I/O — User I/O pin (bank 1) |
| پن 8 | I/O — User I/O pin (bank 1) |
| پن 9 | I/O — User I/O pin (bank 1) |
| پن 10 | I/O — User I/O pin (bank 1) |
| پن 11 | GND — Ground |
| پن 12 | I/O — User I/O pin (bank 1) |
| پن 13 | I/O — User I/O pin (bank 1) |
| پن 14 | I/O — User I/O pin (bank 1) |
| پن 15 | I/O — User I/O pin (bank 1) |
| پن 16 | I/O — User I/O pin (bank 1) |
| پن 17 | I/O — User I/O pin (bank 1) |
| پن 18 | I/O — User I/O pin (bank 1) |
| پن 19 | I/O — User I/O pin (bank 1) |
| پن 20 | I/O — User I/O pin (bank 1) |
| پن 21 | I/O — User I/O pin (bank 1) |
| پن 22 | VCCINT — Core supply voltage (3.3 V) |
| پن 23 | I/O — User I/O pin (bank 1) |
| پن 24 | GND — Ground |
| پن 25 | I/O — User I/O pin (bank 2) |
| پن 26 | I/O — User I/O pin (bank 2) |
| پن 27 | I/O — User I/O pin (bank 2) |
| پن 28 | I/O — User I/O pin (bank 2) |
| پن 29 | I/O — User I/O pin (bank 2) |
| پن 30 | I/O — User I/O pin (bank 2) |
| پن 31 | I/O — User I/O pin (bank 2) |
| پن 32 | I/O — User I/O pin (bank 2) |
| پن 33 | I/O — User I/O pin (bank 2) |
| پن 34 | I/O — User I/O pin (bank 2) |
| پن 35 | I/O — User I/O pin (bank 2) |
| پن 36 | I/O — User I/O pin (bank 2) |
| پن 37 | I/O — User I/O pin (bank 2) |
| پن 38 | I/O — User I/O pin (bank 2) |
| پن 39 | I/O — User I/O pin (bank 2) |
| پن 40 | I/O — User I/O pin (bank 2) |
| پن 41 | GND — Ground |
| پن 42 | I/O — User I/O pin (bank 2) |
| پن 43 | I/O — User I/O pin (bank 2) |
| پن 44 | I/O — User I/O pin (bank 2) |
| پن 45 | I/O — User I/O pin (bank 2) |
| پن 46 | I/O — User I/O pin (bank 2) |
| پن 47 | I/O — User I/O pin (bank 2) |
| پن 48 | I/O — User I/O pin (bank 2) |
| پن 49 | I/O — User I/O pin (bank 2) |
| پن 50 | I/O — User I/O pin (bank 2) |
| پن 51 | TDI — JTAG Test Data In |
| پن 52 | TMS — JTAG Test Mode Select |
| پن 53 | TCK — JTAG Test Clock |
| پن 54 | GND — Ground |
| پن 55 | I/O — User I/O pin (bank 2) |
| پن 56 | I/O — User I/O pin (bank 2) |
| پن 57 | I/O — User I/O pin (bank 2) |
| پن 58 | I/O — User I/O pin (bank 3) |
| پن 59 | I/O — User I/O pin (bank 3) |
| پن 60 | I/O — User I/O pin (bank 3) |
| پن 61 | I/O — User I/O pin (bank 3) |
| پن 62 | I/O — User I/O pin (bank 3) |
| پن 63 | I/O — User I/O pin (bank 3) |
| پن 64 | I/O — User I/O pin (bank 3) |
| پن 65 | I/O — User I/O pin (bank 3) |
| پن 66 | I/O — User I/O pin (bank 3) |
| پن 67 | I/O — User I/O pin (bank 3) |
| پن 68 | I/O — User I/O pin (bank 3) |
| پن 69 | I/O — User I/O pin (bank 3) |
| پن 70 | I/O — User I/O pin (bank 3) |
| پن 71 | I/O — User I/O pin (bank 3) |
| پن 72 | VCCIO — I/O supply voltage (3.3 V) |
| پن 73 | I/O — User I/O pin (bank 3) |
| پن 74 | GND — Ground |
| پن 75 | I/O — User I/O pin (bank 3) |
| پن 76 | I/O — User I/O pin (bank 3) |
| پن 77 | I/O — User I/O pin (bank 3) |
| پن 78 | I/O — User I/O pin (bank 4) |
| پن 79 | I/O — User I/O pin (bank 4) |
| پن 80 | I/O — User I/O pin (bank 4) |
| پن 81 | I/O — User I/O pin (bank 4) |
| پن 82 | I/O — User I/O pin (bank 4) |
| پن 83 | I/O — User I/O pin (bank 4) |
| پن 84 | I/O — User I/O pin (bank 4) |
| پن 85 | I/O — User I/O pin (bank 4) |
| پن 86 | I/O — User I/O pin (bank 4) |
| پن 87 | I/O — User I/O pin (bank 4) |
| پن 88 | I/O — User I/O pin (bank 4) |
| پن 89 | I/O — User I/O pin (bank 4) |
| پن 90 | I/O — User I/O pin (bank 4) |
| پن 91 | I/O — User I/O pin (bank 4) |
| پن 92 | I/O — User I/O pin (bank 4) |
| پن 93 | GND — Ground |
| پن 94 | I/O — User I/O pin (bank 4) |
| پن 95 | I/O — User I/O pin (bank 4) |
| پن 96 | I/O — User I/O pin (bank 4) |
| پن 97 | I/O — User I/O pin (bank 4) |
| پن 98 | TDO — JTAG Test Data Out |
| پن 99 | I/O — User I/O pin (bank 4) |
| پن 100 | I/O — User I/O pin (bank 4) |
عام استعمالات
EPM7256AETC100-7 کے لیے موزوں ہے 6 ایپلیکیشنs: PCI Bus Interface Bridge, Address Decoding & Chip-Select Generation, Industrial State-Machine Controller, Power-Up Sequencing & Reset Distribution, Peripheral Glue Logic Replacement, Legacy System Modernization.
PCI Bus Interface Bridge
The EPM7256AETC100-7's 256 macrocells and 84 user I/Os provide ample capacity to implement a 32-bit PCI target interface with parity generation, address decoding, and command/byte-enable logic. Its 7.5 ns tPD supports the 33 MHz PCI clock with comfortable setup/hold margin, while the non-volatile EEPROM configuration eliminates the FPGA configuration delay that would violate PCI bus-power-up timing. The JTAG ISP interface enables field firmware updates without board removal.
تجویز کردہ
Address Decoding & Chip-Select Generation
With 256 macrocells and 5,000 usable gates, the EPM7256AETC100-7 can decode multi-bank memory maps and generate chip-select signals for an entire microcontroller-based system. The deterministic 7.5 ns propagation delay ensures that chip-selects arrive ahead of the memory access cycle, preventing bus contention. The 84 I/Os support up to 30+ chip-select outputs plus address/data passthrough, and the JTAG ISP allows last-minute memory map adjustments during prototype bring-up.
تجویز کردہ
Industrial State-Machine Controller
The EPM7256AETC100-7 is ideal for implementing complex multi-state control machines in industrial automation. Its 256 macrocells support state machines with 16-32 states plus associated timing/counter logic, while the 126.6 MHz internal frequency enables fast cycle times. The non-volatile EEPROM ensures the controller starts in a defined state on every power-up - critical for safety interlocks. For -40C to +85C industrial environments, the EPM7256AETI100-7 industrial-temp variant provides the same logic with extended temperature range.
تجویز کردہ
Power-Up Sequencing & Reset Distribution
The MAX 7000A CPLD powers up with all I/Os tri-stated and configuration loaded in microseconds - faster than any FPGA - making the EPM7256AETC100-7 ideal for power-up sequencing in multi-rail systems. Its 84 I/Os support sequencing of 20+ voltage rails with programmable delays implemented in macrocell counters. The non-volatile EEPROM eliminates the need for external boot PROMs, simplifying BOM and reducing board area compared to FPGA-based solutions.
تجویز کردہ
Peripheral Glue Logic Replacement
The EPM7256AETC100-7 replaces 5-10 discrete 74-series logic chips with a single programmable device, reducing PCB area and BOM cost. Its 256 macrocells can implement latches, multiplexers, encoders, and bus transceivers in one package, while design changes require only a JTAG re-flash rather than board respins. The 7.5 ns tPD matches 74F-series logic timing, ensuring transparent drop-in replacement for legacy glue logic.
تجویز کردہ
Legacy System Modernization
When EOL notices hit legacy 5-V GAL/PAL designs, the EPM7256AETC100-7 provides a 3.3-V programmable alternative with comparable timing and far greater logic density. Its JTAG ISP allows in-circuit reprogramming for last-minute logic fixes, while the non-volatile EEPROM maintains the deterministic power-up behavior expected in aerospace and defense legacy systems. The commercial temperature grade suits most indoor industrial retrofits.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا EPM7256AETC100-7 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | EPM7256AETC100-10N | EPM7256AETC100-7N | EPM7256AETI100-7 | EPM7256AETC100-5N |
|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | TQFP-100 | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same | TQFP-100 - same |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| Pin-to-Pin Delay (tPD) | 7.5 ns | 10 ns (-33%) | 7.5 ns (identical) | 7.5 ns (identical) | 5 ns (+33%) |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| Core Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| User I/Os | 84 | 84 | 84 | 84 | 84 |
| Programming Interface | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) | JTAG (IEEE 1149.1) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
اہم امتیازی خصوصیات
- Faster 7.5 ns speed grade versus -10 variant (بمقابلہEPM7256AETC100-10N)
- Commercial temperature grade available at lower cost (بمقابلہEPM7256AETI100-7)
- 256 macrocells with 84 user I/Os in TQFP-100 (بمقابلہEPM7256AETC100-5N)
ڈیزائن نوٹس
The EPM7256AETC100-7 requires a stable 3.3 V supply on VCCINT (pin 22) and VCCIO (pin 72). Place 0.1 uF decoupling capacitors within 3 mm of each VCC pin and a bulk 10 uF tantalum or ceramic capacitor near the package. According to the MAX 7000A datasheet, inrush current during ISP programming can reach 200 mA peak - ensure the 3.3 V regulator can supply this transient. Add a power-on reset supervisor if the host system does not provide clean POR signaling.
Route JTAG signals (TCK, TMS, TDI, TDO on pins 51-53, 98) in a single daisy-chain with 10 kohm pull-ups on TCK/TMS/TDI for reliable boundary-scan operation. Keep JTAG trace lengths under 100 mm and avoid routing parallel to clock or switching signals. Place a 4-pin 0.1-inch JTAG header on the board edge for programming access. The 84 user I/Os can be assigned to any function - use Quartus pin planner to lock assignments and reserve unused pins as outputs driving low.
Do not confuse the EPM7256AETC100-7 with the EPM7256AETI100-7 - the latter is industrial temperature grade and costs more. Verify both voltage (3.3 V vs 5 V) and temperature grade (C = commercial vs I = industrial) before PCB assembly, as the suffix letter indicates the temperature range. When migrating designs to modern parts, note that the MAX 7000A is obsolete - consider the MAX II EPM240T100C5N or MAX V 5M160ZE64C5N for new designs, but verify JTAG and pinout compatibility.
تعمیل کی معلومات
Compliance status not explicitly stated in verified web data. The -7N suffix variants are typically lead-free/Pb-free, but the base -7 part may contain lead finishes. For new designs requiring RoHS, choose EPM7256AETC100-7N. Part is classified obsolete by Intel.
