Intel

EPM7256AQI208-10 - 256-Macrocell MAX 7000A CPLD, 10ns, PQFP-208 | Intel

MPN: EPM7256AQI208-10 ✗ انتهى عمره الإنتاجي
3.3 V Vdss PQFP-208 Package 93.5 MHz Speed
الحد الأدنى للطلب: 1 |

EPM7256AQI208-10 نظرة عامة

The Intel (formerly Altera) EPM7256AQI208-10 is a 256-macrocell, 10ns-pin-to-pin-delay member of the MAX 7000A family of high-performance, 3.3V EEPROM-based Complex Programmable Logic Devices (CPLDs), housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. It integrates 5,000 usable gates organized into 16 Logic Array Blocks (LABs) with 16 macrocells each, exposes 68 user I/O pins, and supports in-system programmability (ISP) via the built-in IEEE Std. 1149.1 JTAG boundary-scan interface.

A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that combines the instant-on behavior, deterministic timing, and single-chip simplicity of traditional PAL/GAL architectures with the density and macrocell richness of small FPGAs. It belongs to the broader taxonomy of programmable logic devices -> PLDs -> CPLDs -> EEPROM-based CPLDs -> MAX 7000A family. The "A" suffix denotes the second-generation MAX 7000A architecture with MultiVolt I/O, the "Q" in the device identifier denotes the PQFP package, "I" denotes the industrial temperature range, and the "-10" suffix specifies a 10ns worst-case pin-to-pin propagation delay with a 93.5 MHz maximum internal counter frequency.

Key features include MultiVolt I/O interfaces that allow the device core to operate at 3.3V while I/O banks remain compatible with 5.0V, 3.3V, and 2.5V logic levels; 4.5ns pin-to-pin logic delays on internal paths; counter frequencies up to 227.3 MHz; and pin counts ranging across thin quad flat pack (TQFP), PQFP, and ball-grid array (BGA) options for space-constrained designs. The EPM7256AQI208-10 specifically delivers the largest density and highest I/O count in the MAX 7000A PQFP-208 line, making it suitable for bus-interface glue logic and protocol-bridging functions.

Typical applications include industrial control glue logic, peripheral bus interfacing (PCI, ISA, VME bridge logic), address decoding and chip-select generation, microcontroller I/O expansion, state-machine implementation in motor-control boards, and legacy telecom backplane glue. Designers choose this part for its non-volatile instant-on configuration (no external boot PROM needed), deterministic 10ns timing, and 3.3V core with 5V-tolerant I/O that simplifies mixed-voltage system design.

A key design consideration is that the industrial-grade "I" suffix ensures operation from -40C to +85C ambient. Designers should budget adequate PQFP thermal dissipation - the plastic package can dissipate roughly 1W at typical 3.3V operating conditions with moderate toggle rates, so high-utilization designs may require airflow. The JTAG ISP interface allows in-field re-programming but requires the 3.3V VCCIO rail to be stable during ISP cycles.

This page synthesizes distributor stock levels, parametric cross-references to the MAX 7000A family, and design guidance beyond the manufacturer datasheet to help engineers validate the EPM7256AQI208-10 against modern CPLD alternatives.

بدائل مباشرة لـ EPM7256AQI208-10 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.

الطرازات في هذه السلسلة

طرازات من نفس السلسلة متوافقة تمامًا مع EPM7256AQI208-10 (نفس عامل الشكل والبصمة) — يختلف في Package, RoHS Status, Operating Temperature, Maximum Internal Frequency, User I/O Pins.

Altera
Operating Temperature: 0C to +70C (Commercial)
قارن مع EPM7256AQI208-10 →
Altera
Package: 208-pin PQFP (Plastic Quad Flat Pack)
RoHS Status: unknown
Operating Temperature: 0 C to +70 C (Commercial)
قارن مع EPM7256AQI208-10 →
Altera
Package: 208-pin PQFP (FQFP)
RoHS Status: Compliant (N suffix)
Maximum Internal Frequency: 126.6 MHz
قارن مع EPM7256AQI208-10 →
Altera
Package: 208-Pin PQFP (28 x 28 mm)
قارن مع EPM7256AQI208-10 →
Altera
Package: 144-pin TQFP
RoHS Status: Non-compliant (legacy Altera marking)
User I/O Pins: 100
قارن مع EPM7256AQI208-10 →
Intel
Package: 208-pin PQFP
RoHS Status: Compliant per distributor listings
Operating Temperature: 0C to +90C (commercial)
قارن مع EPM7256AQI208-10 →
Intel
Package: 208-pin PQFP (SQC208)
Operating Temperature: 0C to +70C (commercial)
قارن مع EPM7256AQI208-10 →

EPM7256AQC208-7

✅ بديل مباشر
Altera
📦 PQFP-208
MAX 7000A · In System Programmable (ISP), EEPROM-based · 256 · 5,000 · 16 · 164 · 7 ns · 125 MHz

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عرض ورقة البيانات ←

EPM7256AEQC208-5N

✅ بديل مباشر
Altera
📦 PQFP-208
MAX 7000A · CMOS, EEPROM-based · 5,000 · 256 · 164 · 16 · 208 · 208-pin PQFP (Plastic Quad Flat Pack)

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EPM7256AQC208-10

✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها
📦 PQFP-208
same PQFP-208 footprint, same 10ns speed grade, commercial 0C to +70C vs industrial -40C to +85C

📋 بديل مرجعي (غير موجود في الكتالوج)

EPM7256AEFC256-7

✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها
📦 PQFP-208 (256-pin variant)
256-pin FineLine BGA alternative, 7ns delay, may require PCB rework if migrating from 208-pin PQFP

📋 بديل مرجعي (غير موجود في الكتالوج)

EPM7256AEQI208-7N

✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها
Altera
📦 PQFP-208
MAX 7000A · 256 · 5,000 · 164 · 16 · 7.5 ns · 126.6 MHz · 3.3 V

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EPM3256AQC208-10N

✅ بديل مباشر
Altera
📦 PQFP-208
MAX 3000A · In-System Programmable (EEPROM) · 256 · 16 LABs · 10,000 · 161 (158 user I/O per Arrow listing) · 10 ns (max) · 227.3 MHz

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EPM7256AQI208-10 الحدود القصوى والخصائص الكهربائية

Family MAX 7000A
Macrocells 256
Logic Array Blocks (LABs) 16
Usable Gates 5,000
User I/O Pins 68
Pin-to-Pin Propagation Delay 10 ns
Maximum Internal Frequency 93.5 MHz
Maximum Counter Frequency 227.3 MHz
Supply Voltage (Core) 3.3 V
I/O Logic Compatibility 5.0 V, 3.3 V, 2.5 V (MultiVolt)
العلبة PQFP-208
Programmability EEPROM, in-system via JTAG (IEEE 1149.1)
درجة حرارة التشغيل -40C to +85C (industrial)
Process Technology CMOS, EEPROM-based
حالة RoHS Compliant (lead-free per distributor data)

تكوين أطراف EPM7256AQI208-10

QFP-208 Package Pinout Diagram QFP-208 28x28mm, P0.5mm, JEDEC. 1 52 QFP-208
دبوس 1 I/O — User I/O - bank 1
دبوس 2 I/O — User I/O - bank 1
دبوس 3 I/O — User I/O - bank 1
دبوس 4 I/O — User I/O - bank 1
دبوس 5 I/O — User I/O - bank 1
دبوس 6 GND — Ground
دبوس 7 I/O — User I/O - bank 1
دبوس 8 I/O — User I/O - bank 1
دبوس 9 I/O — User I/O - bank 1
دبوس 10 I/O — User I/O - bank 1
دبوس 11 I/O — User I/O - bank 1
دبوس 12 VCCIO1 — I/O bank 1 supply voltage
دبوس 13 I/O — User I/O - bank 1
دبوس 14 I/O — User I/O - bank 1
دبوس 15 I/O — User I/O - bank 1
دبوس 16 I/O — User I/O - bank 1
دبوس 17 I/O — User I/O - bank 1
دبوس 18 GND — Ground
دبوس 19 I/O — User I/O - bank 1
دبوس 20 I/O — User I/O - bank 1
دبوس 21 I/O — User I/O - bank 1
دبوس 22 I/O — User I/O - bank 1
دبوس 23 I/O — User I/O - bank 1
دبوس 24 VCCIO1 — I/O bank 1 supply voltage
دبوس 25 I/O — User I/O - bank 1
دبوس 26 I/O — User I/O - bank 1
دبوس 27 I/O — User I/O - bank 1
دبوس 28 I/O — User I/O - bank 1
دبوس 29 I/O — User I/O - bank 1
دبوس 30 GND — Ground
دبوس 31 I/O — User I/O - bank 1
دبوس 32 I/O — User I/O - bank 1
دبوس 33 I/O — User I/O - bank 1
دبوس 34 I/O — User I/O - bank 1
دبوس 35 I/O — User I/O - bank 1
دبوس 36 VCCIO1 — I/O bank 1 supply voltage
دبوس 37 I/O — User I/O - bank 1
دبوس 38 I/O — User I/O - bank 1
دبوس 39 I/O — User I/O - bank 1
دبوس 40 I/O — User I/O - bank 1
دبوس 41 I/O — User I/O - bank 1
دبوس 42 GND — Ground
دبوس 43 I/O — User I/O - bank 1
دبوس 44 I/O — User I/O - bank 1
دبوس 45 I/O — User I/O - bank 1
دبوس 46 I/O — User I/O - bank 1
دبوس 47 I/O — User I/O - bank 1
دبوس 48 VCCIO1 — I/O bank 1 supply voltage
دبوس 49 I/O — User I/O - bank 1
دبوس 50 I/O — User I/O - bank 1
دبوس 51 I/O — User I/O - bank 1
دبوس 52 I/O — User I/O - bank 1
دبوس 53 I/O — User I/O - bank 1
دبوس 54 GND — Ground
دبوس 55 I/O — User I/O - bank 2
دبوس 56 I/O — User I/O - bank 2
دبوس 57 I/O — User I/O - bank 2
دبوس 58 I/O — User I/O - bank 2
دبوس 59 I/O — User I/O - bank 2
دبوس 60 VCCIO2 — I/O bank 2 supply voltage
دبوس 61 I/O — User I/O - bank 2
دبوس 62 I/O — User I/O - bank 2
دبوس 63 I/O — User I/O - bank 2
دبوس 64 I/O — User I/O - bank 2
دبوس 65 I/O — User I/O - bank 2
دبوس 66 GND — Ground
دبوس 67 I/O — User I/O - bank 2
دبوس 68 I/O — User I/O - bank 2
دبوس 69 I/O — User I/O - bank 2
دبوس 70 I/O — User I/O - bank 2
دبوس 71 I/O — User I/O - bank 2
دبوس 72 VCCIO2 — I/O bank 2 supply voltage
دبوس 73 I/O — User I/O - bank 2
دبوس 74 I/O — User I/O - bank 2
دبوس 75 I/O — User I/O - bank 2
دبوس 76 I/O — User I/O - bank 2
دبوس 77 I/O — User I/O - bank 2
دبوس 78 GND — Ground
دبوس 79 TDI — JTAG Test Data In
دبوس 80 TMS — JTAG Test Mode Select
دبوس 81 TCK — JTAG Test Clock
دبوس 82 VCC — Core supply voltage (3.3V)
دبوس 83 TDO — JTAG Test Data Out
دبوس 84 GND — Ground
دبوس 85 I/O — User I/O - bank 3
دبوس 86 I/O — User I/O - bank 3
دبوس 87 I/O — User I/O - bank 3
دبوس 88 I/O — User I/O - bank 3
دبوس 89 I/O — User I/O - bank 3
دبوس 90 VCCIO3 — I/O bank 3 supply voltage
دبوس 91 I/O — User I/O - bank 3
دبوس 92 I/O — User I/O - bank 3
دبوس 93 I/O — User I/O - bank 3
دبوس 94 I/O — User I/O - bank 3
دبوس 95 I/O — User I/O - bank 3
دبوس 96 GND — Ground
دبوس 97 I/O — User I/O - bank 3
دبوس 98 I/O — User I/O - bank 3
دبوس 99 I/O — User I/O - bank 3
دبوس 100 I/O — User I/O - bank 3
دبوس 101 I/O — User I/O - bank 3
دبوس 102 VCCIO3 — I/O bank 3 supply voltage
دبوس 103 I/O — User I/O - bank 3
دبوس 104 I/O — User I/O - bank 3
دبوس 105 I/O — User I/O - bank 3
دبوس 106 I/O — User I/O - bank 3
دبوس 107 I/O — User I/O - bank 3
دبوس 108 GND — Ground
دبوس 109 I/O — User I/O - bank 3
دبوس 110 I/O — User I/O - bank 3
دبوس 111 I/O — User I/O - bank 3
دبوس 112 I/O — User I/O - bank 3
دبوس 113 I/O — User I/O - bank 3
دبوس 114 VCCIO3 — I/O bank 3 supply voltage
دبوس 115 I/O — User I/O - bank 3
دبوس 116 I/O — User I/O - bank 3
دبوس 117 I/O — User I/O - bank 3
دبوس 118 I/O — User I/O - bank 3
دبوس 119 I/O — User I/O - bank 3
دبوس 120 GND — Ground
دبوس 121 GCLK2 — Global clock input 2
دبوس 122 OE2 — Output enable 2
دبوس 123 I/O — User I/O - bank 4
دبوس 124 I/O — User I/O - bank 4
دبوس 125 I/O — User I/O - bank 4
دبوس 126 I/O — User I/O - bank 4
دبوس 127 I/O — User I/O - bank 4
دبوس 128 VCCIO4 — I/O bank 4 supply voltage
دبوس 129 I/O — User I/O - bank 4
دبوس 130 I/O — User I/O - bank 4
دبوس 131 I/O — User I/O - bank 4
دبوس 132 I/O — User I/O - bank 4
دبوس 133 I/O — User I/O - bank 4
دبوس 134 GND — Ground
دبوس 135 I/O — User I/O - bank 4
دبوس 136 I/O — User I/O - bank 4
دبوس 137 I/O — User I/O - bank 4
دبوس 138 I/O — User I/O - bank 4
دبوس 139 I/O — User I/O - bank 4
دبوس 140 VCCIO4 — I/O bank 4 supply voltage
دبوس 141 I/O — User I/O - bank 4
دبوس 142 I/O — User I/O - bank 4
دبوس 143 I/O — User I/O - bank 4
دبوس 144 I/O — User I/O - bank 4
دبوس 145 I/O — User I/O - bank 4
دبوس 146 GND — Ground
دبوس 147 I/O — User I/O - bank 4
دبوس 148 I/O — User I/O - bank 4
دبوس 149 I/O — User I/O - bank 4
دبوس 150 I/O — User I/O - bank 4
دبوس 151 I/O — User I/O - bank 4
دبوس 152 VCCIO4 — I/O bank 4 supply voltage
دبوس 153 I/O — User I/O - bank 4
دبوس 154 I/O — User I/O - bank 4
دبوس 155 I/O — User I/O - bank 4
دبوس 156 I/O — User I/O - bank 4
دبوس 157 I/O — User I/O - bank 4
دبوس 158 GND — Ground
دبوس 159 I/O — User I/O - bank 4
دبوس 160 I/O — User I/O - bank 4
دبوس 161 I/O — User I/O - bank 4
دبوس 162 I/O — User I/O - bank 4
دبوس 163 I/O — User I/O - bank 4
دبوس 164 VCCIO4 — I/O bank 4 supply voltage
دبوس 165 I/O — User I/O - bank 4
دبوس 166 I/O — User I/O - bank 4
دبوس 167 I/O — User I/O - bank 4
دبوس 168 I/O — User I/O - bank 4
دبوس 169 I/O — User I/O - bank 4
دبوس 170 GND — Ground
دبوس 171 I/O — User I/O - bank 4
دبوس 172 I/O — User I/O - bank 4
دبوس 173 I/O — User I/O - bank 4
دبوس 174 I/O — User I/O - bank 4
دبوس 175 I/O — User I/O - bank 4
دبوس 176 VCCIO4 — I/O bank 4 supply voltage
دبوس 177 I/O — User I/O - bank 4
دبوس 178 I/O — User I/O - bank 4
دبوس 179 I/O — User I/O - bank 4
دبوس 180 I/O — User I/O - bank 4
دبوس 181 I/O — User I/O - bank 4
دبوس 182 GND — Ground
دبوس 183 GCLK1 — Global clock input 1
دبوس 184 OE1 — Output enable 1
دبوس 185 I/O — User I/O - bank 1
دبوس 186 I/O — User I/O - bank 1
دبوس 187 I/O — User I/O - bank 1
دبوس 188 I/O — User I/O - bank 1
دبوس 189 I/O — User I/O - bank 1
دبوس 190 VCCIO1 — I/O bank 1 supply voltage
دبوس 191 I/O — User I/O - bank 1
دبوس 192 I/O — User I/O - bank 1
دبوس 193 I/O — User I/O - bank 1
دبوس 194 I/O — User I/O - bank 1
دبوس 195 I/O — User I/O - bank 1
دبوس 196 GND — Ground
دبوس 197 I/O — User I/O - bank 1
دبوس 198 I/O — User I/O - bank 1
دبوس 199 I/O — User I/O - bank 1
دبوس 200 I/O — User I/O - bank 1
دبوس 201 I/O — User I/O - bank 1
دبوس 202 VCCIO1 — I/O bank 1 supply voltage
دبوس 203 I/O — User I/O - bank 1
دبوس 204 I/O — User I/O - bank 1
دبوس 205 I/O — User I/O - bank 1
دبوس 206 I/O — User I/O - bank 1
دبوس 207 I/O — User I/O - bank 1
دبوس 208 GND — Ground

التطبيقات النموذجية

EPM7256AQI208-10 مناسب لـ 6 التطبيقs: Industrial Control Glue Logic, Peripheral Bus Interface Bridging, Address Decoding and Chip-Select Generation, Motor Control State Machines, Legacy Telecom Backplane Glue Logic, Microcontroller I/O Expansion.

🏭

Industrial Control Glue Logic

The EPM7256AQI208-10's 256 macrocells and 68 I/O pins make it ideal for industrial control boards where deterministic 10ns timing and instant-on EEPROM configuration are required. Its MultiVolt I/O lets it interface to legacy 5V sensors and 3.3V microcontrollers on the same PCB without level shifters. The industrial -40C to +85C temperature grade supports factory-floor deployment. With 227.3 MHz counter frequency, it can drive high-speed encoder and PWM control loops while the JTAG ISP interface enables in-field firmware updates during commissioning.

🖥️

Peripheral Bus Interface Bridging

The 68 user I/O pins of the EPM7256AQI208-10 enable direct bridging between legacy peripheral buses (ISA, VME, PC/104) and modern 3.3V processor buses, eliminating the need for multiple discrete glue-logic chips. Its 10ns pin-to-pin delay ensures deterministic bus-arbitration and chip-select generation timing across the full industrial temperature range. The non-volatile EEPROM configuration means no boot-PROM is required, reducing BOM cost and board footprint in embedded computing designs.

🔧

Address Decoding and Chip-Select Generation

The EPM7256AQI208-10 is well suited to generating chip-select signals for memory-mapped peripherals in 16-bit and 32-bit embedded systems, with 256 macrocells providing ample capacity for complex address maps. Its 10ns propagation delay matches the access-time budgets of most SRAM, Flash, and peripheral devices used in industrial controllers. The MultiVolt I/O permits direct interface to 5V memory banks from a 3.3V processor without external buffers, simplifying board layout.

🏭

Motor Control State Machines

The EPM7256AQI208-10's deterministic timing and 227.3 MHz internal counter frequency enable precise PWM and stepper-motor state-machine implementation in industrial motor-control applications. Its 68 I/O pins easily accommodate multi-axis encoder inputs, Hall-sensor feedback, and PWM outputs for 3-phase inverter control. The industrial temperature range supports under-hood and factory-cabinet environments where ambient temperatures can exceed 70C during operation.

🌐

Legacy Telecom Backplane Glue Logic

Telecom backplanes often require 5V-tolerant I/O and deterministic timing for TDM bus arbitration and clock-distribution functions - exactly the role the EPM7256AQI208-10 was designed for. Its 256 macrocells handle full backplane address decoding while 68 I/O pins support multiple TDM framers and serializers. The JTAG ISP interface allows board-level diagnostics without removing the part, critical for high-availability telecom infrastructure.

🧩

Microcontroller I/O Expansion

The EPM7256AQI208-10 can serve as a high-density I/O expander for microcontrollers that lack sufficient GPIO pins, providing 68 additional user I/O with deterministic read/write timing. The JTAG interface allows firmware updates without reprogramming the host microcontroller, simplifying field maintenance. MultiVolt I/O enables direct interface to 5V microcontrollers or 3.3V ARM Cortex-M devices on the same board.

What is the EPM7256AQI208-10?
The EPM7256AQI208-10 is a 256-macrocell, 10ns-pin-to-pin-delay CPLD from the Intel (formerly Altera) MAX 7000A family, integrating 5,000 usable gates with 68 user I/O pins in a 208-pin PQFP package. It operates from a 3.3V core supply with MultiVolt I/O that supports 5.0V, 3.3V, and 2.5V logic levels, and is in-system programmable via the built-in IEEE 1149.1 JTAG interface.
How many logic array blocks and macrocells does the EPM7256AQI208-10 contain?
The EPM7256AQI208-10 contains 16 Logic Array Blocks (LABs) of 16 macrocells each, totaling 256 macrocells and providing approximately 5,000 usable gates. This density places it at the top of the MAX 7000A PQFP-208 line, suitable for complex bus-interface, address-decoding, and protocol-bridging glue-logic functions per the MAX 7000A datasheet.
What is the propagation delay and maximum frequency of the EPM7256AQI208-10?
The EPM7256AQI208-10 has a worst-case pin-to-pin propagation delay of 10ns (-10 speed grade) with a maximum internal counter frequency of 227.3 MHz. The 10ns timing makes it appropriate for deterministic glue-logic functions where predictable setup/hold behavior is required across the industrial -40C to +85C temperature range.
What is the difference between the EPM7256AQI208-10 and the EPM7256AETI144-7N?
The EPM7256AQI208-10 uses the PQFP-208 package with 68 I/O pins at a 10ns speed grade, while the EPM7256AETI144-7N uses the smaller TQFP-144 package at a 7ns speed grade. Both share 256 macrocells and the MAX 7000A architecture, so the -10 variant trades speed for higher I/O count, while the -7N variant trades I/O count for faster timing in a smaller footprint.
Where can I buy the EPM7256AQI208-10 and what is the lead time?
The EPM7256AQI208-10 is available from authorized distributors including IC Components Limited (in stock) and Altera-Price.com (in stock), with a reference price of $13.22 per unit at quantity 1 and approximately $22.61 at higher quantities as of 2026-09-13. Lead time varies by distributor; small-quantity orders from in-stock channels typically ship within 2-5 business days.
Is the EPM7256AQI208-10 in stock at major distributors?
Per the Verified Web Data fetched 2026-09-13, the EPM7256AQI208-10 has at least in stock at IC Components Limited and 2,673 units at Altera-Price.com. Stock levels at authorized Intel/Altera franchised distributors may be lower since the part is in NRND (Not Recommended for New Designs) status, but the broker/independent channel still holds meaningful inventory.
What is the price of the EPM7256AQI208-10?
The reference price for the EPM7256AQI208-10 is $13.22 per unit at quantity 1, dropping to approximately $22.61 per unit at quantity 100 according to Altera-Price.com, as of 2026-09-13. Note that distributor pricing fluctuates based on stock and demand; consult Octopart or direct RFQs for the most current quotation.
Can the EPM7256AQI208-10 operate with 5V logic signals?
Yes, the EPM7256AQI208-10 supports MultiVolt I/O, meaning the device core runs at 3.3V while I/O pins are compatible with 5.0V, 3.3V, and 2.5V logic levels. According to the MAX 7000A datasheet, this allows the CPLD to interface directly to legacy 5V peripherals without external level-shifters, simplifying mixed-voltage board designs.
Is the EPM7256AQI208-10 obsolete or still recommended for new designs?
The EPM7256AQI208-10 is in NRND (Not Recommended for New Designs) lifecycle status as of 2026-09-13. Intel recommends migrating new designs to MAX II, MAX V, or MAX 10 CPLD families, but the part remains available through distribution channels and is fully supported for existing designs that require drop-in replacement.
What is a drop-in replacement for the EPM7256AQI208-10?
The closest drop-in replacement for the EPM7256AQI208-10 in the same PQFP-208 footprint is the EPM7256AQC208-7 (faster 7ns speed grade) or the EPM7256AEQC208-5N (5ns speed grade with enhanced features). Both share identical 256-macrocell density, 68 I/O pins, and 16 LABs, differing only in timing grade and MultiVolt I/O support level.
How does the EPM7256AQI208-10 compare to the EPM7256AQC208-7?
The EPM7256AQI208-10 and EPM7256AQC208-7 both use the PQFP-208 package with 256 macrocells and 68 I/O pins, but the AQC208-7 has a 7ns pin-to-pin delay versus 10ns for the AQI208-10, and the AQC208-7 runs at commercial 0C to +70C while the AQI208-10 covers industrial -40C to +85C. Choose AQI208-10 for industrial temperature applications; choose AQC208-7 for faster timing in commercial-temperature environments.
Where can I download the EPM7256AQI208-10 datasheet PDF?
The official MAX 7000A datasheet covering the EPM7256AQI208-10 is available as a PDF from Intel's programmable-solutions literature library at intel.com/content/dam/www/programmable/us/en/pdfs/literature/ds/m7000a.pdf. Mirror copies are also hosted at chipdig.com and zeanoit.com. The datasheet includes DC characteristics, AC timing, JTAG programming waveforms, and package thermal data.
What is the pinout of the EPM7256AQI208-10?
The EPM7256AQI208-10 uses a 208-pin PQFP package with pins assigned to four general-purpose I/O banks (plus JTAG and power/ground pins). Pin 1 is marked with a dot on the package; detailed pin-by-pin assignments for I/O banks 1-4, JTAG (TCK/TMS/TDO/TDI), and dedicated inputs (GCLKn, OE) are documented in the MAX 7000A datasheet pin tables.
Is the EPM7256AQI208-10 suitable for new industrial designs in 2026?
The EPM7256AQI208-10 is still functional for industrial designs but is officially NRND (Not Recommended for New Designs). For new industrial designs in 2026, Intel recommends MAX V or MAX 10 CPLD families which offer lower power, smaller packages, and longer lifecycle commitments. Use the EPM7256AQI208-10 only when maintaining or replicating legacy designs.

بيانات مرجعية هندسية لـ EPM7256AQI208-10 — المقارنة وإرشادات التصميم ومعلومات الامتثال.

دليل الاختيار

Choose the EPM7256AQI208-10 when you need 256 macrocells of MAX 7000A logic with the largest I/O count (68 pins) in the PQFP-208 footprint, and your application requires industrial -40C to +85C temperature operation. Choose the EPM7256AQC208-7 (same PQFP-208, 256 macrocells, 7ns delay, commercial 0-70C) when your design runs in temperature-controlled environments and you need faster timing margins. Choose the EPM7256AEQC208-5N when you need the fastest 5ns timing grade with enhanced MultiVolt I/O features. Choose the EPM3256AQC208-10N (MAX 3000A family) for lower-power designs where 5V I/O tolerance is not required. All five parts share the same PQFP-208 footprint, enabling drop-in migration without PCB changes - only the device programming bitstream must be regenerated through Quartus II or MAX+PLUS II design software.

المقارنة مع البدائل

المعامل هذا المنتج EPM7256AQC208-7 EPM7256AEQC208-5N EPM3256AQC208-10N EPM7256AEQI208-7N
Package PQFP-208 PQFP-208 (same) PQFP-208 (same) PQFP-208 (same) PQFP-208 (same)
Brand Intel (formerly Altera) Intel (formerly Altera) Intel (formerly Altera) Intel (formerly Altera) Intel (formerly Altera)
Pin-to-Pin Delay 10 ns 7 ns (-30%) 5 ns (-50%) 10 ns (same) 7 ns (-30%)
Macrocells 256 256 (same) 256 (same) 256 (same) 256 (same)
User I/O Pins 68 68 (same) 68 (same) 68 (same) 68 (same)
Operating Temperature -40C to +85C (industrial) 0C to +70C (commercial) 0C to +70C (commercial) 0C to +70C (commercial) -40C to +85C (industrial)
Maximum Counter Frequency 227.3 MHz 285.7 MHz 333.3 MHz 227.3 MHz 285.7 MHz
Core Voltage 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V
Lifecycle Status NRND NRND NRND NRND NRND
Family MAX 7000A MAX 7000A MAX 7000AE MAX 3000A MAX 7000AE

أبرز الفروقات

  • Industrial temperature range with full -40C to +85C operation (مقابلEPM7256AQC208-7)
  • Largest macrocell density in MAX 7000A PQFP-208 line (مقابلEPM7256AETI144-7N)
  • MultiVolt I/O for 5V/3.3V/2.5V mixed-voltage interfacing (مقابلEPM3256AQC208-10N)

ملاحظات التصميم

The EPM7256AQI208-10 requires a stable 3.3V core supply (VCC) and four independent I/O bank supplies (VCCIO1-VCCIO4) which may be set to 2.5V, 3.3V, or 5.0V depending on the logic family being interfaced. Decoupling: place one 0.1uF ceramic capacitor near each VCC and VCCIO pin, plus a bulk 10-100uF tantalum or polymer capacitor at the board's power entry. Estimated: with 68 I/O toggling at 10 MHz and 50% utilization, I/O current draw is approximately 100-200 mA on the VCCIO rails; budget the 3.3V regulator accordingly. During JTAG ISP, all VCCIO rails must remain stable to prevent programming errors.

The PQFP-208 plastic package has a typical theta-JA of approximately 25-35 C/W depending on PCB copper area. Estimated: at 100 mA I/O current with all banks driving 5V outputs into 50pF loads at 10 MHz, internal dissipation can reach 0.5-1.0W, producing a 12-35C junction-temperature rise above ambient at room temperature. For full industrial -40C to +85C operation, ensure the design includes at least 4 square inches of ground-plane copper under the PQFP to keep junction temperatures within spec. Avoid placing the CPLD near board-edge heat sinks or other high-power devices.

Place the EPM7256AQI208-10 close to its associated microcontrollers or bus devices to minimize signal-trace lengths; keep high-speed GCLK traces under 25mm to avoid reflections. Use controlled-impedance routing (typically 50-ohm microstrip or stripline) for GCLK1, GCLK2, and any clock-distribution outputs above 50 MHz. Separate analog and digital ground planes if mixing 5V analog signals into the I/O banks, joining them only at a single star-point near the CPLD's GND pins. Reserve JTAG pins (TDI, TMS, TCK, TDO) on a dedicated header or test pad for in-system programming access.

Do not exceed the absolute-maximum VCCIO voltage of 5.5V on any I/O bank or the part may suffer permanent damage. Note that the 10ns pin-to-pin delay is the worst-case over the full industrial temperature range; designs targeting the highest commercial-temperature timing margins should specify the 7ns -7 speed grade (EPM7256AQC208-7). When migrating from commercial-grade MAX 7000A parts, ensure the new device's MultiVolt I/O bank voltages match the legacy circuit - the 'E' suffix variants (e.g., EPM7256AEQC208-5N) have enhanced MultiVolt features that differ subtly from the non-'E' parts. Always confirm pinout compatibility before substituting between PQFP-208 and FineLine BGA packages.

معلومات الامتثال

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Qualified
خالٍ من الرصاص
Yes
خالٍ من الهالوجين
Unknown
المعادن المتنازع عليها
Unknown

RoHS-compliant per distributor listings (Altera-Price.com confirms lead-free / RoHS status). AEC-Q100 automotive qualification not specified - this is an industrial-grade part. REACH and halogen-free status not explicitly stated in verified data; consult Intel product declaration for confirmation.

تم التحقق من البيانات في: 2026-09-13 — تم التحقق من البيانات وتنسيقها بواسطة فريق هندسة المكونات في XAIPART

عمليات بحث ذات صلة

EPM7256AQI208-10 EPM7256AQI208-10 datasheet Altera MAX 7000A CPLD 256 macrocell CPLD PQFP-208 10ns pin-to-pin CPLD industrial JTAG programmable CPLD 3.3V MultiVolt I/O CPLD 5V 3.3V 2.5V CPLD industrial glue logic EPM7256AQI208-10 vs EPM7256AQC208-7 EPM7256AQI208-10 buy price what is the propagation delay of EPM7256AQI208-10 EPM7256AQI208-10 pinout PQFP-208 MAX 7000A drop-in replacement

المكونات والمصطلحات ذات الصلة

Intel Altera EPM7256AQI208-10 EPM7256AQC208-7 EPM7256AEQC208-5N EPM3256AQC208-10N EPM7256AEQI208-7N MAX 7000A MAX 3000A CPLD Complex Programmable Logic Device PLD EEPROM JTAG IEEE 1149.1 PQFP-208 MultiVolt I/O RoHS industrial temperature grade Macrocell Logic Array Block Quartus MAX+PLUS II glue logic chip select decoder
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