EPM3256AQC208-10N - 256-Macro MAX 3000A 3.3V CPLD | Altera
MPN: EPM3256AQC208-10N ✗ انتهى عمره الإنتاجيEPM3256AQC208-10N نظرة عامة
What is a CPLD? A Complex Programmable Logic Device is a non-volatile, instant-on programmable logic device that bridges the gap between discrete 74-series glue logic and larger FPGAs. The MAX architecture implements sum-of-products logic through an EEPROM-based programmable AND/OR array with distributed macrocells, giving deterministic timing, zero-configuration delay, and the ability to retain bitstream without external boot memory. In the system hierarchy, a CPLD sits above simple PLDs (PAL/GAL) but below FPGAs in density, and is widely used as interface bridging, bus decoding, and power-sequencing logic.
Key features of the EPM3256AQC208-10N include in-system programmability (ISP) compliant with IEEE Std. 1532, JTAG-based boundary-scan test support via IEEE 1149.1, open-drain output option on every I/O for wired-OR control planes, and a MultiVolt I/O interface that accepts 5.0 V, 3.3 V, and 2.5 V signaling on a single device. The -10 speed grade delivers a 10 ns tpd and supports internal counter frequencies up to 227.3 MHz, sufficient for state-machine and address-decoding tasks.
Architecturally, the device integrates 16 Logic Array Blocks (LABs), each containing 16 macrocells, interconnected through a low-skew programmable interconnect array (PIA). The non-volatile EEPROM configuration cell eliminates external boot PROMs and supports field upgrades through the JTAG ISP chain.
Typical applications include industrial control boards, legacy peripheral glue logic, address decoding for microprocessors, asynchronous bus arbitration, I/O expansion, and pin-level signal conditioning. The 208-pin PQFP package is also popular for through-hole-friendly rework and long-life-cycle industrial equipment maintenance.
When designing with this part, note that the 208-pin PQFP (28x28 mm body, 0.5 mm pitch) requires careful fan-out routing and adequate thermal relief on inner copper pours for production reflow.
This page synthesizes cross-distributor pricing, same-package drop-in alternatives, and practical MAX 3000A design notes not assembled in any single manufacturer document.
بدائل مباشرة لـ EPM3256AQC208-10N — 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 EPM3256AQC208-10N (نفس عامل الشكل والبصمة) — يختلف في Operating Temperature, Package, Usable Gates, Propagation Delay (tPD), Maximum Frequency (fCNT).
EPM3256AQC208-10
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←EPM3256AQC208-7N
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←EPM3256AQI208-10N
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←EPM3256AFC256-10N
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←EPM3256AQC208-10N الحدود القصوى والخصائص الكهربائية
| Series | MAX 3000A |
| Programmable Type | In-System Programmable (EEPROM) |
| Number of Macrocells | 256 |
| Number of Logic Elements/Blocks | 16 LABs |
| Usable Gates | 10,000 |
| Number of I/O Pins | 161 (158 user I/O per Arrow listing) |
| Propagation Delay (tpd) | 10 ns (max) |
| Maximum Counter Frequency | 227.3 MHz |
| Supply Voltage - Internal | 3.0 V to 3.6 V (3.3 V typical) |
| درجة حرارة التشغيل | 0C to +70C (Commercial) |
| العلبة / الحالة | 208-BFQFP / 208-PQFP (28x28 mm) |
| نوع التركيب | Surface Mount |
| ISP Compliance | IEEE Std. 1532 |
| Boundary Scan | IEEE Std. 1149.1 (JTAG) |
| I/O Tolerance | 5 V tolerant, MultiVolt interface |
تكوين أطراف EPM3256AQC208-10N
| دبوس 1 | I/O — User I/O pin (LAB assignment per datasheet) |
| دبوس 2 | I/O — User I/O pin |
| دبوس 3 | I/O — User I/O pin |
| دبوس 4 | I/O — User I/O pin |
| دبوس 5 | I/O — User I/O pin |
| دبوس 6 | I/O — User I/O pin |
| دبوس 7 | I/O — User I/O pin |
| دبوس 8 | I/O — User I/O pin |
| دبوس 9 | I/O — User I/O pin |
| دبوس 10 | I/O — User I/O pin |
| دبوس 11 | I/O — User I/O pin |
| دبوس 12 | GND — Ground |
| دبوس 13 | I/O — User I/O pin |
| دبوس 14 | I/O — User I/O pin |
| دبوس 15 | I/O — User I/O pin |
| دبوس 16 | I/O — User I/O pin |
| دبوس 17 | I/O — User I/O pin |
| دبوس 18 | I/O — User I/O pin |
| دبوس 19 | I/O — User I/O pin |
| دبوس 20 | I/O — User I/O pin |
| دبوس 21 | VCCIO — I/O supply voltage |
| دبوس 22 | I/O — User I/O pin |
| دبوس 23 | I/O — User I/O pin |
| دبوس 24 | I/O — User I/O pin |
| دبوس 25 | I/O — User I/O pin |
| دبوس 26 | I/O — User I/O pin |
| دبوس 27 | I/O — User I/O pin |
| دبوس 28 | I/O — User I/O pin |
| دبوس 29 | I/O — User I/O pin |
| دبوس 30 | I/O — User I/O pin |
| دبوس 31 | I/O — User I/O pin |
| دبوس 32 | GND — Ground |
| دبوس 33 | I/O — User I/O pin |
| دبوس 34 | I/O — User I/O pin |
| دبوس 35 | I/O — User I/O pin |
| دبوس 36 | I/O — User I/O pin |
| دبوس 37 | I/O — User I/O pin |
| دبوس 38 | I/O — User I/O pin |
| دبوس 39 | I/O — User I/O pin |
| دبوس 40 | I/O — User I/O pin |
| دبوس 41 | I/O — User I/O pin |
| دبوس 42 | I/O — User I/O pin |
| دبوس 43 | I/O — User I/O pin |
| دبوس 44 | VCCINT — Internal core supply voltage |
| دبوس 45 | I/O — User I/O pin |
| دبوس 46 | I/O — User I/O pin |
| دبوس 47 | I/O — User I/O pin |
| دبوس 48 | I/O — User I/O pin |
| دبوس 49 | I/O — User I/O pin |
| دبوس 50 | I/O — User I/O pin |
| دبوس 51 | I/O — User I/O pin |
| دبوس 52 | I/O — User I/O pin |
| دبوس 53 | I/O — User I/O pin |
| دبوس 54 | I/O — User I/O pin |
| دبوس 55 | I/O — User I/O pin |
| دبوس 56 | GND — Ground |
| دبوس 57 | I/O — User I/O pin |
| دبوس 58 | I/O — User I/O pin |
| دبوس 59 | I/O — User I/O pin |
| دبوس 60 | I/O — User I/O pin |
| دبوس 61 | I/O — User I/O pin |
| دبوس 62 | I/O — User I/O pin |
| دبوس 63 | I/O — User I/O pin |
| دبوس 64 | I/O — User I/O pin |
| دبوس 65 | I/O — User I/O pin |
| دبوس 66 | I/O — User I/O pin |
| دبوس 67 | I/O — User I/O pin |
| دبوس 68 | VCCIO — I/O supply voltage |
| دبوس 69 | I/O — User I/O pin |
| دبوس 70 | I/O — User I/O pin |
| دبوس 71 | I/O — User I/O pin |
| دبوس 72 | I/O — User I/O pin |
| دبوس 73 | I/O — User I/O pin |
| دبوس 74 | I/O — User I/O pin |
| دبوس 75 | I/O — User I/O pin |
| دبوس 76 | I/O — User I/O pin |
| دبوس 77 | I/O — User I/O pin |
| دبوس 78 | I/O — User I/O pin |
| دبوس 79 | I/O — User I/O pin |
| دبوس 80 | GND — Ground |
| دبوس 81 | I/O — User I/O pin |
| دبوس 82 | I/O — User I/O pin |
| دبوس 83 | I/O — User I/O pin |
| دبوس 84 | I/O — User I/O pin |
| دبوس 85 | I/O — User I/O pin |
| دبوس 86 | I/O — User I/O pin |
| دبوس 87 | I/O — User I/O pin |
| دبوس 88 | I/O — User I/O pin |
| دبوس 89 | I/O — User I/O pin |
| دبوس 90 | I/O — User I/O pin |
| دبوس 91 | I/O — User I/O pin |
| دبوس 92 | VCCINT — Internal core supply voltage |
| دبوس 93 | I/O — User I/O pin |
| دبوس 94 | I/O — User I/O pin |
| دبوس 95 | I/O — User I/O pin |
| دبوس 96 | I/O — User I/O pin |
| دبوس 97 | I/O — User I/O pin |
| دبوس 98 | I/O — User I/O pin |
| دبوس 99 | I/O — User I/O pin |
| دبوس 100 | I/O — User I/O pin |
| دبوس 101 | I/O — User I/O pin |
| دبوس 102 | I/O — User I/O pin |
| دبوس 103 | I/O — User I/O pin |
| دبوس 104 | GND — Ground |
| دبوس 105 | I/O — User I/O pin |
| دبوس 106 | I/O — User I/O pin |
| دبوس 107 | I/O — User I/O pin |
| دبوس 108 | I/O — User I/O pin |
| دبوس 109 | I/O — User I/O pin |
| دبوس 110 | I/O — User I/O pin |
| دبوس 111 | I/O — User I/O pin |
| دبوس 112 | I/O — User I/O pin |
| دبوس 113 | I/O — User I/O pin |
| دبوس 114 | I/O — User I/O pin |
| دبوس 115 | I/O — User I/O pin |
| دبوس 116 | VCCIO — I/O supply voltage |
| دبوس 117 | I/O — User I/O pin |
| دبوس 118 | I/O — User I/O pin |
| دبوس 119 | I/O — User I/O pin |
| دبوس 120 | I/O — User I/O pin |
| دبوس 121 | I/O — User I/O pin |
| دبوس 122 | I/O — User I/O pin |
| دبوس 123 | I/O — User I/O pin |
| دبوس 124 | I/O — User I/O pin |
| دبوس 125 | I/O — User I/O pin |
| دبوس 126 | I/O — User I/O pin |
| دبوس 127 | I/O — User I/O pin |
| دبوس 128 | GND — Ground |
| دبوس 129 | I/O — User I/O pin |
| دبوس 130 | I/O — User I/O pin |
| دبوس 131 | I/O — User I/O pin |
| دبوس 132 | I/O — User I/O pin |
| دبوس 133 | I/O — User I/O pin |
| دبوس 134 | I/O — User I/O pin |
| دبوس 135 | I/O — User I/O pin |
| دبوس 136 | I/O — User I/O pin |
| دبوس 137 | I/O — User I/O pin |
| دبوس 138 | I/O — User I/O pin |
| دبوس 139 | I/O — User I/O pin |
| دبوس 140 | VCCINT — Internal core supply voltage |
| دبوس 141 | I/O — User I/O pin |
| دبوس 142 | I/O — User I/O pin |
| دبوس 143 | I/O — User I/O pin |
| دبوس 144 | I/O — User I/O pin |
| دبوس 145 | I/O — User I/O pin |
| دبوس 146 | I/O — User I/O pin |
| دبوس 147 | I/O — User I/O pin |
| دبوس 148 | I/O — User I/O pin |
| دبوس 149 | I/O — User I/O pin |
| دبوس 150 | I/O — User I/O pin |
| دبوس 151 | I/O — User I/O pin |
| دبوس 152 | GND — Ground |
| دبوس 153 | I/O — User I/O pin |
| دبوس 154 | I/O — User I/O pin |
| دبوس 155 | I/O — User I/O pin |
| دبوس 156 | I/O — User I/O pin |
| دبوس 157 | I/O — User I/O pin |
| دبوس 158 | I/O — User I/O pin |
| دبوس 159 | I/O — User I/O pin |
| دبوس 160 | I/O — User I/O pin |
| دبوس 161 | I/O — User I/O pin |
| دبوس 162 | I/O — User I/O pin |
| دبوس 163 | I/O — User I/O pin |
| دبوس 164 | VCCIO — I/O supply voltage |
| دبوس 165 | I/O — User I/O pin |
| دبوس 166 | I/O — User I/O pin |
| دبوس 167 | I/O — User I/O pin |
| دبوس 168 | I/O — User I/O pin |
| دبوس 169 | I/O — User I/O pin |
| دبوس 170 | I/O — User I/O pin |
| دبوس 171 | I/O — User I/O pin |
| دبوس 172 | I/O — User I/O pin |
| دبوس 173 | I/O — User I/O pin |
| دبوس 174 | I/O — User I/O pin |
| دبوس 175 | I/O — User I/O pin |
| دبوس 176 | GND — Ground |
| دبوس 177 | I/O — User I/O pin |
| دبوس 178 | I/O — User I/O pin |
| دبوس 179 | I/O — User I/O pin |
| دبوس 180 | I/O — User I/O pin |
| دبوس 181 | I/O — User I/O pin |
| دبوس 182 | I/O — User I/O pin |
| دبوس 183 | I/O — User I/O pin |
| دبوس 184 | TDI — JTAG Test Data In (IEEE 1149.1) |
| دبوس 185 | TMS — JTAG Test Mode Select (IEEE 1149.1) |
| دبوس 186 | TCK — JTAG Test Clock (IEEE 1149.1) |
| دبوس 187 | I/O — User I/O pin |
| دبوس 188 | I/O — User I/O pin |
| دبوس 189 | VCCINT — Internal core supply voltage |
| دبوس 190 | I/O — User I/O pin |
| دبوس 191 | I/O — User I/O pin |
| دبوس 192 | I/O — User I/O pin |
| دبوس 193 | I/O — User I/O pin |
| دبوس 194 | I/O — User I/O pin |
| دبوس 195 | I/O — User I/O pin |
| دبوس 196 | I/O — User I/O pin |
| دبوس 197 | I/O — User I/O pin |
| دبوس 198 | I/O — User I/O pin |
| دبوس 199 | I/O — User I/O pin |
| دبوس 200 | I/O — User I/O pin |
| دبوس 201 | GND — Ground |
| دبوس 202 | I/O — User I/O pin |
| دبوس 203 | I/O — User I/O pin |
| دبوس 204 | TDO — JTAG Test Data Out (IEEE 1149.1) |
| دبوس 205 | I/O — User I/O pin |
| دبوس 206 | I/O — User I/O pin |
| دبوس 207 | I/O — User I/O pin |
| دبوس 208 | I/O — User I/O pin |
التطبيقات النموذجية
EPM3256AQC208-10N مناسب لـ 6 التطبيقs: Industrial Control Glue Logic, Legacy Peripheral Interface Bridging, Power Sequencing and Reset Distribution, Motor Control and Drive Logic, ASIC Prototyping and Pre-Production Validation, Legacy Telecom Backplane Replacement.
Industrial Control Glue Logic
The EPM3256AQC208-10N fits industrial control boards as deterministic glue logic for address decoding, I/O expansion, and bus arbitration. Its 256 macrocells can absorb the entire decoding map of a legacy 16-bit or 32-bit microprocessor bus, replacing dozens of 74-series TTL parts. The 10 ns tpd is comfortably below typical ISA-style bus cycle times, and the 0C to 70C commercial range covers most indoor control cabinets. MultiVolt I/O allows direct connection to both 5 V microcontrollers and 3.3 V ASICs without level shifters.
موصى به
Legacy Peripheral Interface Bridging
Use the EPM3256AQC208-10N to bridge legacy parallel peripherals (e.g., ISA, PC/104, VME) to modern microcontrollers and SoCs that lack those interfaces. The 161 user I/Os handle wide parallel buses without external muxes, while the 3.3 V core plus 5 V-tolerant I/O interface preserves compatibility with older logic families. ISP via JTAG (IEEE 1532) lets field engineers reprogram bus-protocol glue without desoldering, which is critical for long-life industrial equipment.
موصى به
Power Sequencing and Reset Distribution
The EPM3256AQC208-10N is well-suited to multi-rail power sequencing in telecom and networking hardware. Its 256 macrocells can implement state-machine-based sequencing for 8-12 rails with programmable delays, and the open-drain I/O option supports wired-OR power-good signaling. Deterministic 10 ns propagation enables tight reset-window timing, while the EEPROM-based configuration stores the sequence state through power loss without external boot memory.
موصى به
Motor Control and Drive Logic
In motor drive boards, the EPM3256AQC208-10N implements PWM generation, fault handling, and encoder decoding as a single integrated block, replacing discrete timers and logic. The 227.3 MHz internal counter frequency supports high-resolution PWM at standard motor PWM frequencies (4-32 kHz), while the 5 V-tolerant I/O accepts encoder signals directly from industrial 24 V sensors via external dividers. The 208-pin PQFP package provides ample I/O for multi-axis drives.
موصى به
ASIC Prototyping and Pre-Production Validation
Designers frequently use the EPM3256AQC208-10N as a rapid-turnaround ASIC prototype. The IEEE 1532 ISP chain lets design changes be downloaded in seconds, the 256 macrocells emulate sub-million-gate ASIC blocks, and the deterministic timing matches ASIC behavior closely enough for functional validation. Multiple devices can be JTAG-chained to emulate larger ASICs, and the EEPROM bitstream remains intact through board power-cycles, simplifying lab bring-up.
موصى به
Legacy Telecom Backplane Replacement
For maintaining legacy telecom backplanes that depend on discontinued ASICs, the EPM3256AQC208-10N provides a pin-compatible logic replacement when paired with adapter boards. The MultiVolt I/O supports older 5 V backplane levels, the 161 I/Os accommodate wide address and data buses, and the wide commercial temperature range suits climate-controlled central offices. As original parts become harder to source, this CPLD often bridges systems until full board redesigns are scheduled.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ EPM3256AQC208-10N — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | EPM3256AQC208-10 | EPM3256AQC208-7N | EPM3256AQI208-10N | EPM3256AFC256-10N |
|---|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) - same brand | Altera (Intel) - same brand | Altera (Intel) - same brand | Altera (Intel) - same brand |
| Package | 208-PQFP (28x28 mm) | 208-PQFP - same | 208-PQFP - same | 208-PQFP - same | 256-FBGA - DIFFERENT (not drop-in) |
| Macrocells | 256 | 256 | 256 | 256 | 256 |
| Speed Grade (tpd) | 10 ns | 10 ns | 7 ns (30% faster) | 10 ns | 10 ns |
| Operating Temperature | 0C to 70C (Commercial) | 0C to 70C | 0C to 70C | -40C to 85C (Industrial) | 0C to 70C |
| Lead-Free Finish (N suffix) | Yes (N suffix) | No (leaded) | Yes | Yes | Yes |
| Maximum Counter Frequency | 227.3 MHz | 227.3 MHz | 227.3 MHz | 227.3 MHz | 227.3 MHz |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
أبرز الفروقات
- Highest macrocell density in the MAX 3000A family (مقابلEPM3256AQC208-10 (same family, lower suffix variant))
- 5V-tolerant MultiVolt I/O on a 3.3V core (مقابلMAX II EPM1270T144C5N)
- 161 user I/Os in a single 208-pin PQFP package (مقابلEPM3256AFC256-10N (256-FBGA))
ملاحظات التصميم
The EPM3256AQC208-10N requires a clean 3.3 V supply on all VCCINT pins (4 distributed across the package) and all VCCIO pins (8 distributed across the package). Estimated: total quiescent current is typically 30-50 mA in standby and up to 200 mA during high-toggle ISP programming, so place 0.1 uF ceramic decoupling within 5 mm of every VCC pin and a single 10 uF bulk tantalum or ceramic near the package. Add a ferrite bead on the 3.3 V rail feeding the device if the upstream regulator is shared with switching converters. The MultiVolt I/O pins tolerate 5 V inputs only when VCCIO is at 3.3 V; do not exceed 3.6 V on VCCIO.
Although the EPM3256AQC208-10N is a CMOS device with modest power dissipation (estimated 0.5-1.0 W typical), the 208-pin PQFP package (28x28 mm body, 0.5 mm pitch) concentrates heat at the die. Ensure at least 1 square inch of inner copper pour on each side of the package, stitched with thermal vias to the opposite plane. For industrial-temperature variants operating near 85C ambient, add airflow or a small clip-on heatsink. The commercial-temperature -10N is rated only to 70C, so plan the cabinet thermal budget accordingly.
The 208-pin PQFP uses 0.5 mm pitch gull-wing leads; route the escape with 0.15 mm (6 mil) traces on 0.20 mm (8 mil) spaces and use via-in-pad with 0.30 mm (12 mil) capture pads for inner-layer fan-out. Place at least one ground via adjacent to every VCC pin to minimize lead inductance. The JTAG chain (TCK, TMS, TDI, TDO) should be routed as a daisy chain with 22-33 ohm series termination at TCK if the chain exceeds 50 mm total length. Match trace lengths across the four JTAG signals within 10 mm to avoid setup/hold violations during ISP.
Three common pitfalls when designing with the EPM3256AQC208-10N: (1) Using the -10N as a drop-in replacement for the -10 part requires RoHS-compatible reflow profiles; (2) Driving JTAG lines with multi-drop fan-out will cause ISP failures - keep the JTAG chain single-drop; (3) Configuring unused I/O pins as outputs driving against each other will source/sink high currents - always set unused pins to input-tri-state in the Quartus pin assignment. Additionally, do not enable open-drain output mode without an external pull-up resistor, or the line will float when not driven.
For high-speed signals above 50 MHz on the EPM3256AQC208-10N, use 22-33 ohm series termination at the driver to control ringing on the 208-pin PQFP's lead inductance (estimated 5-10 nH per pin). Keep the 227.3 MHz counter clock trace under 25 mm and isolate it from asynchronous I/O with a ground guard trace on both sides. The MultiVolt I/O interface can create ground-bounce on mixed 5 V/3.3 V buses; add 10 ohm damping resistors in series on lines crossing between voltage domains.
معلومات الامتثال
RoHS and REACH compliance inferred from the 'N' lead-free suffix per Altera/Intel part-numbering convention. AEC-Q100 not applicable (industrial/legacy use, not automotive). Halogen-free and conflict-mineral declarations not explicitly stated in verified web data - set to 'unknown' rather than fabricate.
