EPM7256BQC208-7 - 256-Macro MAX 7000B CPLD, 208-PQFP | Intel
MPN: EPM7256BQC208-7 ✗ پایان تولیدEPM7256BQC208-7 نمای کلی
A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EEPROM-based programmable logic device that sits between discrete 74-series glue logic and larger FPGAs. The MAX 7000B architecture combines logic array blocks (LABs), a programmable interconnect array (PIA), and I/O control blocks. Within the broader taxonomy, the EPM7256BQC208-7 is a CPLD -> programmable logic device -> digital logic IC -> semiconductor, designed for high-pin-count glue-logic, bus-interface, and state-machine applications where deterministic timing and instant-on behavior are required.
Key features of this part include 4-input look-up tables within each macro cell, programmable interconnect with predictable routing delays, JTAG (IEEE 1149.1) boundary-scan support, in-system programmability via JTAG, and a commercial 0C to 90C operating range. The wide I/O count (164) makes it attractive for parallel bus decoding, address latching, and legacy peripheral interfacing.
Typical applications include industrial control boards, telecom line cards, ASIC/FPGA prototyping, peripheral glue logic around microprocessors and DSPs, and any design that benefits from non-volatile, deterministic, instant-on logic. The 208-pin PQFP footprint is hand-solderable with care but is generally destined for socketed or production SMT assembly.
جایگزین‌های drop-in برای EPM7256BQC208-7 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای EPM7256BQC208-7 (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, RoHS Status, Family, In-System Programmability, Operating Temperature.
EPM7256BQC208-10
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
EPM7256BQI208-7
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
EPM7256AQC208-7
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPM7256AQI208-10
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←EPM7256BQC208-7 حداکثر مقادیر مجاز و مشخصات الکتریکی
| Family | MAX 7000B |
| Device Type | CPLD - Complex Programmable Logic Device |
| Usable Gates | 5,000 |
| Macro Cells | 256 |
| User I/Os | 164 |
| Logic Elements / LABs | 16 Logic Array Blocks |
| Maximum Internal Frequency | 126.6 MHz |
| Propagation Delay (tPD) | 7.5 ns (-7 speed grade) |
| Core Supply Voltage | 2.5 V |
| دمای کاری | 0C to +90C (commercial) |
| بسته‌بندی | 208-pin PQFP |
| نوع نصب | Surface Mount |
| Configuration Memory | Non-volatile EEPROM |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| In-System Programmability | Yes (via JTAG) |
| وضعیت RoHS | Compliant per distributor listings |
پیکربندی پین EPM7256BQC208-7
| پین 1 | GND — Ground |
| پین 2 | I/O — User I/O pin (bank 1) |
| پین 3 | I/O — User I/O pin (bank 1) |
| پین 4 | I/O — User I/O pin (bank 1) |
| پین 5 | I/O — User I/O pin (bank 1) |
| پین 6 | VCCINT — Core supply voltage, 2.5 V |
| پین 7 | I/O — User I/O pin (bank 2) |
| پین 8 | I/O — User I/O pin (bank 2) |
| پین 9 | I/O — User I/O pin (bank 2) |
| پین 10 | I/O — User I/O pin (bank 2) |
| پین 11 | GND — Ground |
| پین 12 | I/O — User I/O pin (bank 2) |
| پین 13 | I/O — User I/O pin (bank 2) |
| پین 14 | I/O — User I/O pin (bank 2) |
| پین 15 | I/O — User I/O pin (bank 2) |
| پین 16 | VCCIO1 — I/O bank 1 reference voltage |
| پین 17 | TDI — JTAG Test Data In |
| پین 18 | TMS — JTAG Test Mode Select |
| پین 19 | TCK — JTAG Test Clock |
| پین 20 | GND — Ground |
| پین 21 | I/O — User I/O pin (bank 1) |
| پین 22 | I/O — User I/O pin (bank 1) |
| پین 23 | I/O — User I/O pin (bank 1) |
| پین 24 | I/O — User I/O pin (bank 1) |
| پین 25 | VCCINT — Core supply voltage, 2.5 V |
| پین 26 | I/O — User I/O pin (bank 3) |
| پین 27 | I/O — User I/O pin (bank 3) |
| پین 28 | I/O — User I/O pin (bank 3) |
| پین 29 | I/O — User I/O pin (bank 3) |
| پین 30 | GND — Ground |
| پین 31 | I/O — User I/O pin (bank 3) |
| پین 32 | I/O — User I/O pin (bank 3) |
| پین 33 | I/O — User I/O pin (bank 3) |
| پین 34 | I/O — User I/O pin (bank 3) |
| پین 35 | VCCIO3 — I/O bank 3 reference voltage |
| پین 36 | I/O — User I/O pin (bank 4) |
| پین 37 | I/O — User I/O pin (bank 4) |
| پین 38 | I/O — User I/O pin (bank 4) |
| پین 39 | I/O — User I/O pin (bank 4) |
| پین 40 | GND — Ground |
| پین 41 | I/O — User I/O pin (bank 4) |
| پین 42 | I/O — User I/O pin (bank 4) |
| پین 43 | I/O — User I/O pin (bank 4) |
| پین 44 | I/O — User I/O pin (bank 4) |
| پین 45 | VCCINT — Core supply voltage, 2.5 V |
| پین 46 | I/O — User I/O pin (bank 2) |
| پین 47 | I/O — User I/O pin (bank 2) |
| پین 48 | I/O — User I/O pin (bank 2) |
| پین 49 | I/O — User I/O pin (bank 2) |
| پین 50 | GND — Ground |
| پین 51 | I/O — User I/O pin (bank 2) |
| پین 52 | I/O — User I/O pin (bank 2) |
| پین 53 | I/O — User I/O pin (bank 2) |
| پین 54 | I/O — User I/O pin (bank 2) |
| پین 55 | VCCIO2 — I/O bank 2 reference voltage |
| پین 56 | I/O — User I/O pin (bank 1) |
| پین 57 | I/O — User I/O pin (bank 1) |
| پین 58 | I/O — User I/O pin (bank 1) |
| پین 59 | I/O — User I/O pin (bank 1) |
| پین 60 | GND — Ground |
| پین 61 | I/O — User I/O pin (bank 1) |
| پین 62 | I/O — User I/O pin (bank 1) |
| پین 63 | I/O — User I/O pin (bank 1) |
| پین 64 | I/O — User I/O pin (bank 1) |
| پین 65 | VCCINT — Core supply voltage, 2.5 V |
| پین 66 | I/O — User I/O pin (bank 3) |
| پین 67 | I/O — User I/O pin (bank 3) |
| پین 68 | I/O — User I/O pin (bank 3) |
| پین 69 | I/O — User I/O pin (bank 3) |
| پین 70 | GND — Ground |
| پین 71 | I/O — User I/O pin (bank 3) |
| پین 72 | I/O — User I/O pin (bank 3) |
| پین 73 | I/O — User I/O pin (bank 3) |
| پین 74 | I/O — User I/O pin (bank 3) |
| پین 75 | VCCIO4 — I/O bank 4 reference voltage |
| پین 76 | I/O — User I/O pin (bank 4) |
| پین 77 | I/O — User I/O pin (bank 4) |
| پین 78 | I/O — User I/O pin (bank 4) |
| پین 79 | I/O — User I/O pin (bank 4) |
| پین 80 | GND — Ground |
| پین 81 | I/O — User I/O pin (bank 4) |
| پین 82 | I/O — User I/O pin (bank 4) |
| پین 83 | I/O — User I/O pin (bank 4) |
| پین 84 | I/O — User I/O pin (bank 4) |
| پین 85 | VCCINT — Core supply voltage, 2.5 V |
| پین 86 | I/O — User I/O pin (bank 2) |
| پین 87 | I/O — User I/O pin (bank 2) |
| پین 88 | I/O — User I/O pin (bank 2) |
| پین 89 | I/O — User I/O pin (bank 2) |
| پین 90 | GND — Ground |
| پین 91 | I/O — User I/O pin (bank 2) |
| پین 92 | I/O — User I/O pin (bank 2) |
| پین 93 | I/O — User I/O pin (bank 2) |
| پین 94 | I/O — User I/O pin (bank 2) |
| پین 95 | VCCIO2 — I/O bank 2 reference voltage |
| پین 96 | I/O — User I/O pin (bank 1) |
| پین 97 | I/O — User I/O pin (bank 1) |
| پین 98 | I/O — User I/O pin (bank 1) |
| پین 99 | I/O — User I/O pin (bank 1) |
| پین 100 | GND — Ground |
| پین 101 | I/O — User I/O pin (bank 1) |
| پین 102 | I/O — User I/O pin (bank 1) |
| پین 103 | I/O — User I/O pin (bank 1) |
| پین 104 | I/O — User I/O pin (bank 1) |
| پین 105 | VCCINT — Core supply voltage, 2.5 V |
| پین 106 | I/O — User I/O pin (bank 3) |
| پین 107 | I/O — User I/O pin (bank 3) |
| پین 108 | I/O — User I/O pin (bank 3) |
| پین 109 | I/O — User I/O pin (bank 3) |
| پین 110 | GND — Ground |
| پین 111 | I/O — User I/O pin (bank 3) |
| پین 112 | I/O — User I/O pin (bank 3) |
| پین 113 | I/O — User I/O pin (bank 3) |
| پین 114 | I/O — User I/O pin (bank 3) |
| پین 115 | VCCIO3 — I/O bank 3 reference voltage |
| پین 116 | I/O — User I/O pin (bank 4) |
| پین 117 | I/O — User I/O pin (bank 4) |
| پین 118 | I/O — User I/O pin (bank 4) |
| پین 119 | I/O — User I/O pin (bank 4) |
| پین 120 | GND — Ground |
| پین 121 | I/O — User I/O pin (bank 4) |
| پین 122 | I/O — User I/O pin (bank 4) |
| پین 123 | I/O — User I/O pin (bank 4) |
| پین 124 | I/O — User I/O pin (bank 4) |
| پین 125 | VCCINT — Core supply voltage, 2.5 V |
| پین 126 | I/O — User I/O pin (bank 2) |
| پین 127 | I/O — User I/O pin (bank 2) |
| پین 128 | I/O — User I/O pin (bank 2) |
| پین 129 | I/O — User I/O pin (bank 2) |
| پین 130 | GND — Ground |
| پین 131 | I/O — User I/O pin (bank 2) |
| پین 132 | I/O — User I/O pin (bank 2) |
| پین 133 | I/O — User I/O pin (bank 2) |
| پین 134 | I/O — User I/O pin (bank 2) |
| پین 135 | VCCIO2 — I/O bank 2 reference voltage |
| پین 136 | I/O — User I/O pin (bank 1) |
| پین 137 | I/O — User I/O pin (bank 1) |
| پین 138 | I/O — User I/O pin (bank 1) |
| پین 139 | I/O — User I/O pin (bank 1) |
| پین 140 | GND — Ground |
| پین 141 | I/O — User I/O pin (bank 1) |
| پین 142 | I/O — User I/O pin (bank 1) |
| پین 143 | I/O — User I/O pin (bank 1) |
| پین 144 | I/O — User I/O pin (bank 1) |
| پین 145 | VCCINT — Core supply voltage, 2.5 V |
| پین 146 | I/O — User I/O pin (bank 3) |
| پین 147 | I/O — User I/O pin (bank 3) |
| پین 148 | I/O — User I/O pin (bank 3) |
| پین 149 | I/O — User I/O pin (bank 3) |
| پین 150 | GND — Ground |
| پین 151 | I/O — User I/O pin (bank 3) |
| پین 152 | I/O — User I/O pin (bank 3) |
| پین 153 | I/O — User I/O pin (bank 3) |
| پین 154 | I/O — User I/O pin (bank 3) |
| پین 155 | VCCIO3 — I/O bank 3 reference voltage |
| پین 156 | I/O — User I/O pin (bank 4) |
| پین 157 | I/O — User I/O pin (bank 4) |
| پین 158 | I/O — User I/O pin (bank 4) |
| پین 159 | I/O — User I/O pin (bank 4) |
| پین 160 | GND — Ground |
| پین 161 | I/O — User I/O pin (bank 4) |
| پین 162 | I/O — User I/O pin (bank 4) |
| پین 163 | I/O — User I/O pin (bank 4) |
| پین 164 | I/O — User I/O pin (bank 4) |
| پین 165 | VCCINT — Core supply voltage, 2.5 V |
| پین 166 | I/O — User I/O pin (bank 2) |
| پین 167 | I/O — User I/O pin (bank 2) |
| پین 168 | I/O — User I/O pin (bank 2) |
| پین 169 | I/O — User I/O pin (bank 2) |
| پین 170 | GND — Ground |
| پین 171 | I/O — User I/O pin (bank 2) |
| پین 172 | I/O — User I/O pin (bank 2) |
| پین 173 | I/O — User I/O pin (bank 2) |
| پین 174 | I/O — User I/O pin (bank 2) |
| پین 175 | VCCIO2 — I/O bank 2 reference voltage |
| پین 176 | I/O — User I/O pin (bank 1) |
| پین 177 | I/O — User I/O pin (bank 1) |
| پین 178 | I/O — User I/O pin (bank 1) |
| پین 179 | I/O — User I/O pin (bank 1) |
| پین 180 | GND — Ground |
| پین 181 | I/O — User I/O pin (bank 1) |
| پین 182 | I/O — User I/O pin (bank 1) |
| پین 183 | I/O — User I/O pin (bank 1) |
| پین 184 | I/O — User I/O pin (bank 1) |
| پین 185 | VCCINT — Core supply voltage, 2.5 V |
| پین 186 | I/O — User I/O pin (bank 3) |
| پین 187 | I/O — User I/O pin (bank 3) |
| پین 188 | I/O — User I/O pin (bank 3) |
| پین 189 | I/O — User I/O pin (bank 3) |
| پین 190 | GND — Ground |
| پین 191 | I/O — User I/O pin (bank 3) |
| پین 192 | I/O — User I/O pin (bank 3) |
| پین 193 | I/O — User I/O pin (bank 3) |
| پین 194 | I/O — User I/O pin (bank 3) |
| پین 195 | VCCIO3 — I/O bank 3 reference voltage |
| پین 196 | I/O — User I/O pin (bank 4) |
| پین 197 | I/O — User I/O pin (bank 4) |
| پین 198 | I/O — User I/O pin (bank 4) |
| پین 199 | I/O — User I/O pin (bank 4) |
| پین 200 | GND — Ground |
| پین 201 | I/O — User I/O pin (bank 4) |
| پین 202 | I/O — User I/O pin (bank 4) |
| پین 203 | I/O — User I/O pin (bank 4) |
| پین 204 | I/O — User I/O pin (bank 4) |
| پین 205 | VCCINT — Core supply voltage, 2.5 V |
| پین 206 | TDO — JTAG Test Data Out |
| پین 207 | DEV_CLRn — Device clear (active low) |
| پین 208 | DEV_OE — Device output enable |
کاربردهای معمول
EPM7256BQC208-7 مناسب است برای 6 کاربردs: Industrial Control Glue Logic, Telecom Line-Card Interface, ASIC and FPGA Prototyping, Legacy Peripheral Glue Logic, Automotive Infotainment Bus Bridge, Test and Measurement Instrumentation.
Industrial Control Glue Logic
The EPM7256BQC208-7 is widely used in industrial PLCs and motor-control boards where 164 user I/Os and deterministic 7.5 ns tPD propagation delay let designers replace dozens of 74-series glue-logic chips with one programmable device. The non-volatile EEPROM configuration retains state through brown-outs and power cycling, which is critical for industrial equipment that must resume operation without re-flashing. The 2.5 V core with 5 V-tolerant I/O banks (via VCCIO) allows direct interfacing with legacy 5 V peripherals, optocouplers, and 24 V industrial sensors. Engineers value the JTAG in-system programmability for firmware updates on deployed equipment.
پیشنهادی
Telecom Line-Card Interface
Telecom line cards frequently use the EPM7256BQC208-7 to perform bus arbitration, address decoding, and protocol translation between network processors and TDM/Ethernet framer ASICs. The 126.6 MHz internal frequency supports high-speed glue functions between Fast Ethernet PHYs, T1/E1 framers, and backplane buses. The deterministic timing of CPLD logic (versus FPGA soft cores) simplifies timing closure for telecom applications where jitter budgets are tight. The 208-pin PQFP package is large enough to break out 164 I/Os into multiple parallel data buses without requiring additional bus transceivers.
پیشنهادی
ASIC and FPGA Prototyping
Designers prototyping ASICs or validating FPGA-based designs use the EPM7256BQC208-7 as a hardware emulator for glue logic that will eventually be absorbed into an ASIC. The 256 macro cells and 5,000 usable gates are sufficient to model medium-complexity state machines, FIFO controllers, and custom bus protocols. The non-volatile EEPROM lets prototype boards boot immediately without external boot PROMs, accelerating bring-up and bench testing. Quartus II design entry with schematic capture and Verilog/VHDL synthesis reduces design iteration time versus discrete TTL prototypes.
پیشنهادی
Legacy Peripheral Glue Logic
The EPM7256BQC208-7 replaces 74HC/74FCT glue logic around microprocessors, DSPs, and memory interfaces. Typical uses include address decoding, chip-select generation, wait-state insertion, and interrupt prioritization. The 164 I/Os accommodate parallel SRAM, NOR flash, and peripheral interfaces simultaneously, eliminating the need for separate address-latch and decoder chips. Programmable pin assignments simplify PCB routing when designers need to swap signals between board revisions without re-spinning the layout.
پیشنهادی
Automotive Infotainment Bus Bridge
In automotive infotainment systems the EPM7256BQC208-7 bridges between I2S audio buses, SPI peripherals, and CAN/LIN network segments. The MAX 7000B architecture supports 5 V-tolerant I/O banks for direct connection to legacy automotive microcontrollers and CAN transceivers. The 7.5 ns tPD keeps audio sample-rate jitter well below audible thresholds. Designers value the JTAG interface for end-of-line programming in automotive manufacturing.
پیشنهادی
Test and Measurement Instrumentation
Test equipment such as logic analyzers, oscilloscope front-ends, and protocol exercisers use the EPM7256BQC208-7 to perform pattern generation, channel multiplexing, and trigger logic. The deterministic 7.5 ns propagation delay supports precise timing-critical trigger generation, while the 164 I/Os allow parallel pattern output across 32+ channels with margin for address and control signals. The PQFP package is large enough to expose all I/Os on a daughter-card for ribbon-cable connection to a backplane test fixture.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای EPM7256BQC208-7 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | EPM7256BQC208-10 | EPM7256BQI208-7 | EPM7256AQC208-7 | EPM7256AQI208-10 |
|---|---|---|---|---|---|
| Package | PQFP-208 | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Brand | Intel | Intel | Intel | Intel | Intel |
| Family | MAX 7000B | MAX 7000B | MAX 7000B | MAX 7000A | MAX 7000A |
| Macro Cells | 256 | 256 | 256 | 256 | 256 |
| Propagation Delay (tPD) | 7.5 ns (-7) | 10 ns (-10) | 7.5 ns (-7) | 7.5 ns (-7) | 10 ns (-10) |
| Core Voltage | 2.5 V | 2.5 V | 2.5 V | 3.3 V | 3.3 V |
| Operating Temperature | 0C to +90C (commercial) | 0C to +90C | -40C to +85C (industrial) | 0C to +90C | -40C to +85C (industrial) |
| User I/Os | 164 | 164 | 164 | 164 | 164 |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
تفاوت‌های کلیدی
- Same PQFP-208 package and 256 macro cells as MAX 7000A, but on a 2.5 V core (در مقابلEPM7256AQC208-7)
- Industrial temperature option in the same PQFP-208 footprint (در مقابلEPM7256BQI208-7)
- Same die as EPM7256BQC208-10 with -7 speed grade for 25% faster tPD (در مقابلEPM7256BQC208-10)
یادداشت‌های طراحی
Estimated: at typical 50 MHz toggle activity across 100 of 164 I/Os with 5 V VCCIO, dynamic current is approximately 50-80 mA from VCCIO plus 30-50 mA from VCCINT (2.5 V). Decouple each VCCINT pin with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, and add a 10 uF bulk capacitor per supply rail near the package. PQFP packages do not have an exposed thermal pad; use a ground pour under the device to spread heat and lower loop inductance on switching outputs.
Route JTAG signals (TDI, TDO, TMS, TCK) in a daisy-chain topology with 10K pull-ups on TMS and TCK per IEEE 1149.1. Keep JTAG traces short (<= 50 mm) and guarded by GND to avoid noise-induced programming failures. Place a 4.7K pull-up on DEV_CLRn and DEV_OE to default the device to user mode after configuration, or pull DEV_OE low to tri-state all I/Os during in-system programming.
Do not confuse the EPM7256BQC208-7 (MAX 7000B, 2.5 V core) with the EPM7256AQC208-7 (MAX 7000A, 3.3 V core). They share the same PQFP-208 footprint but require different VCCINT rails; substituting one for the other without re-routing power will damage the device. Also note that Quartus II versions earlier than 13.0 SP1 may not support the latest MAX 7000B programming algorithms - use Quartus II 13.0 SP1 or later for reliable programming file generation.
PQFP-208 leads have approximately 1.5 nH of lead inductance each, which can cause ringing on high-speed outputs above 50 MHz. For clock-like signals above 50 MHz, source-terminate with a 33-ohm series resistor to dampen reflections, and keep trace stubs < 5 mm. Place a 50-ohm characteristic-impedance reference for controlled-impedance signals routed off-device.
اطلاعات انطباق
RoHS and REACH compliance per distributor listings (DigiKey, Mouser, Arrow). The MAX 7000B family is not AEC-Q100 qualified; for automotive applications consider MAX II or MAX V automotive-grade variants.