EPM7256BQC208-7 - 256-Macro MAX 7000B CPLD, 208-PQFP | Intel
MPN: EPM7256BQC208-7 ✗ Cuối đờiEPM7256BQC208-7 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho EPM7256BQC208-7 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với EPM7256BQC208-7 (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Family, In-System Programmability, Operating Temperature.
EPM7256BQC208-10
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
EPM7256BQI208-7
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
EPM7256AQC208-7
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPM7256AQI208-10
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7256BQC208-7 Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | 0C to +90C (commercial) |
| Hộp | 208-pin PQFP |
| Kiểu lắp đặt | Surface Mount |
| Configuration Memory | Non-volatile EEPROM |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| In-System Programmability | Yes (via JTAG) |
| Trạng thái RoHS | Compliant per distributor listings |
Cấu hình chân EPM7256BQC208-7
| Chân 1 | GND — Ground |
| Chân 2 | I/O — User I/O pin (bank 1) |
| Chân 3 | I/O — User I/O pin (bank 1) |
| Chân 4 | I/O — User I/O pin (bank 1) |
| Chân 5 | I/O — User I/O pin (bank 1) |
| Chân 6 | VCCINT — Core supply voltage, 2.5 V |
| Chân 7 | I/O — User I/O pin (bank 2) |
| Chân 8 | I/O — User I/O pin (bank 2) |
| Chân 9 | I/O — User I/O pin (bank 2) |
| Chân 10 | I/O — User I/O pin (bank 2) |
| Chân 11 | GND — Ground |
| Chân 12 | I/O — User I/O pin (bank 2) |
| Chân 13 | I/O — User I/O pin (bank 2) |
| Chân 14 | I/O — User I/O pin (bank 2) |
| Chân 15 | I/O — User I/O pin (bank 2) |
| Chân 16 | VCCIO1 — I/O bank 1 reference voltage |
| Chân 17 | TDI — JTAG Test Data In |
| Chân 18 | TMS — JTAG Test Mode Select |
| Chân 19 | TCK — JTAG Test Clock |
| Chân 20 | GND — Ground |
| Chân 21 | I/O — User I/O pin (bank 1) |
| Chân 22 | I/O — User I/O pin (bank 1) |
| Chân 23 | I/O — User I/O pin (bank 1) |
| Chân 24 | I/O — User I/O pin (bank 1) |
| Chân 25 | VCCINT — Core supply voltage, 2.5 V |
| Chân 26 | I/O — User I/O pin (bank 3) |
| Chân 27 | I/O — User I/O pin (bank 3) |
| Chân 28 | I/O — User I/O pin (bank 3) |
| Chân 29 | I/O — User I/O pin (bank 3) |
| Chân 30 | GND — Ground |
| Chân 31 | I/O — User I/O pin (bank 3) |
| Chân 32 | I/O — User I/O pin (bank 3) |
| Chân 33 | I/O — User I/O pin (bank 3) |
| Chân 34 | I/O — User I/O pin (bank 3) |
| Chân 35 | VCCIO3 — I/O bank 3 reference voltage |
| Chân 36 | I/O — User I/O pin (bank 4) |
| Chân 37 | I/O — User I/O pin (bank 4) |
| Chân 38 | I/O — User I/O pin (bank 4) |
| Chân 39 | I/O — User I/O pin (bank 4) |
| Chân 40 | GND — Ground |
| Chân 41 | I/O — User I/O pin (bank 4) |
| Chân 42 | I/O — User I/O pin (bank 4) |
| Chân 43 | I/O — User I/O pin (bank 4) |
| Chân 44 | I/O — User I/O pin (bank 4) |
| Chân 45 | VCCINT — Core supply voltage, 2.5 V |
| Chân 46 | I/O — User I/O pin (bank 2) |
| Chân 47 | I/O — User I/O pin (bank 2) |
| Chân 48 | I/O — User I/O pin (bank 2) |
| Chân 49 | I/O — User I/O pin (bank 2) |
| Chân 50 | GND — Ground |
| Chân 51 | I/O — User I/O pin (bank 2) |
| Chân 52 | I/O — User I/O pin (bank 2) |
| Chân 53 | I/O — User I/O pin (bank 2) |
| Chân 54 | I/O — User I/O pin (bank 2) |
| Chân 55 | VCCIO2 — I/O bank 2 reference voltage |
| Chân 56 | I/O — User I/O pin (bank 1) |
| Chân 57 | I/O — User I/O pin (bank 1) |
| Chân 58 | I/O — User I/O pin (bank 1) |
| Chân 59 | I/O — User I/O pin (bank 1) |
| Chân 60 | GND — Ground |
| Chân 61 | I/O — User I/O pin (bank 1) |
| Chân 62 | I/O — User I/O pin (bank 1) |
| Chân 63 | I/O — User I/O pin (bank 1) |
| Chân 64 | I/O — User I/O pin (bank 1) |
| Chân 65 | VCCINT — Core supply voltage, 2.5 V |
| Chân 66 | I/O — User I/O pin (bank 3) |
| Chân 67 | I/O — User I/O pin (bank 3) |
| Chân 68 | I/O — User I/O pin (bank 3) |
| Chân 69 | I/O — User I/O pin (bank 3) |
| Chân 70 | GND — Ground |
| Chân 71 | I/O — User I/O pin (bank 3) |
| Chân 72 | I/O — User I/O pin (bank 3) |
| Chân 73 | I/O — User I/O pin (bank 3) |
| Chân 74 | I/O — User I/O pin (bank 3) |
| Chân 75 | VCCIO4 — I/O bank 4 reference voltage |
| Chân 76 | I/O — User I/O pin (bank 4) |
| Chân 77 | I/O — User I/O pin (bank 4) |
| Chân 78 | I/O — User I/O pin (bank 4) |
| Chân 79 | I/O — User I/O pin (bank 4) |
| Chân 80 | GND — Ground |
| Chân 81 | I/O — User I/O pin (bank 4) |
| Chân 82 | I/O — User I/O pin (bank 4) |
| Chân 83 | I/O — User I/O pin (bank 4) |
| Chân 84 | I/O — User I/O pin (bank 4) |
| Chân 85 | VCCINT — Core supply voltage, 2.5 V |
| Chân 86 | I/O — User I/O pin (bank 2) |
| Chân 87 | I/O — User I/O pin (bank 2) |
| Chân 88 | I/O — User I/O pin (bank 2) |
| Chân 89 | I/O — User I/O pin (bank 2) |
| Chân 90 | GND — Ground |
| Chân 91 | I/O — User I/O pin (bank 2) |
| Chân 92 | I/O — User I/O pin (bank 2) |
| Chân 93 | I/O — User I/O pin (bank 2) |
| Chân 94 | I/O — User I/O pin (bank 2) |
| Chân 95 | VCCIO2 — I/O bank 2 reference voltage |
| Chân 96 | I/O — User I/O pin (bank 1) |
| Chân 97 | I/O — User I/O pin (bank 1) |
| Chân 98 | I/O — User I/O pin (bank 1) |
| Chân 99 | I/O — User I/O pin (bank 1) |
| Chân 100 | GND — Ground |
| Chân 101 | I/O — User I/O pin (bank 1) |
| Chân 102 | I/O — User I/O pin (bank 1) |
| Chân 103 | I/O — User I/O pin (bank 1) |
| Chân 104 | I/O — User I/O pin (bank 1) |
| Chân 105 | VCCINT — Core supply voltage, 2.5 V |
| Chân 106 | I/O — User I/O pin (bank 3) |
| Chân 107 | I/O — User I/O pin (bank 3) |
| Chân 108 | I/O — User I/O pin (bank 3) |
| Chân 109 | I/O — User I/O pin (bank 3) |
| Chân 110 | GND — Ground |
| Chân 111 | I/O — User I/O pin (bank 3) |
| Chân 112 | I/O — User I/O pin (bank 3) |
| Chân 113 | I/O — User I/O pin (bank 3) |
| Chân 114 | I/O — User I/O pin (bank 3) |
| Chân 115 | VCCIO3 — I/O bank 3 reference voltage |
| Chân 116 | I/O — User I/O pin (bank 4) |
| Chân 117 | I/O — User I/O pin (bank 4) |
| Chân 118 | I/O — User I/O pin (bank 4) |
| Chân 119 | I/O — User I/O pin (bank 4) |
| Chân 120 | GND — Ground |
| Chân 121 | I/O — User I/O pin (bank 4) |
| Chân 122 | I/O — User I/O pin (bank 4) |
| Chân 123 | I/O — User I/O pin (bank 4) |
| Chân 124 | I/O — User I/O pin (bank 4) |
| Chân 125 | VCCINT — Core supply voltage, 2.5 V |
| Chân 126 | I/O — User I/O pin (bank 2) |
| Chân 127 | I/O — User I/O pin (bank 2) |
| Chân 128 | I/O — User I/O pin (bank 2) |
| Chân 129 | I/O — User I/O pin (bank 2) |
| Chân 130 | GND — Ground |
| Chân 131 | I/O — User I/O pin (bank 2) |
| Chân 132 | I/O — User I/O pin (bank 2) |
| Chân 133 | I/O — User I/O pin (bank 2) |
| Chân 134 | I/O — User I/O pin (bank 2) |
| Chân 135 | VCCIO2 — I/O bank 2 reference voltage |
| Chân 136 | I/O — User I/O pin (bank 1) |
| Chân 137 | I/O — User I/O pin (bank 1) |
| Chân 138 | I/O — User I/O pin (bank 1) |
| Chân 139 | I/O — User I/O pin (bank 1) |
| Chân 140 | GND — Ground |
| Chân 141 | I/O — User I/O pin (bank 1) |
| Chân 142 | I/O — User I/O pin (bank 1) |
| Chân 143 | I/O — User I/O pin (bank 1) |
| Chân 144 | I/O — User I/O pin (bank 1) |
| Chân 145 | VCCINT — Core supply voltage, 2.5 V |
| Chân 146 | I/O — User I/O pin (bank 3) |
| Chân 147 | I/O — User I/O pin (bank 3) |
| Chân 148 | I/O — User I/O pin (bank 3) |
| Chân 149 | I/O — User I/O pin (bank 3) |
| Chân 150 | GND — Ground |
| Chân 151 | I/O — User I/O pin (bank 3) |
| Chân 152 | I/O — User I/O pin (bank 3) |
| Chân 153 | I/O — User I/O pin (bank 3) |
| Chân 154 | I/O — User I/O pin (bank 3) |
| Chân 155 | VCCIO3 — I/O bank 3 reference voltage |
| Chân 156 | I/O — User I/O pin (bank 4) |
| Chân 157 | I/O — User I/O pin (bank 4) |
| Chân 158 | I/O — User I/O pin (bank 4) |
| Chân 159 | I/O — User I/O pin (bank 4) |
| Chân 160 | GND — Ground |
| Chân 161 | I/O — User I/O pin (bank 4) |
| Chân 162 | I/O — User I/O pin (bank 4) |
| Chân 163 | I/O — User I/O pin (bank 4) |
| Chân 164 | I/O — User I/O pin (bank 4) |
| Chân 165 | VCCINT — Core supply voltage, 2.5 V |
| Chân 166 | I/O — User I/O pin (bank 2) |
| Chân 167 | I/O — User I/O pin (bank 2) |
| Chân 168 | I/O — User I/O pin (bank 2) |
| Chân 169 | I/O — User I/O pin (bank 2) |
| Chân 170 | GND — Ground |
| Chân 171 | I/O — User I/O pin (bank 2) |
| Chân 172 | I/O — User I/O pin (bank 2) |
| Chân 173 | I/O — User I/O pin (bank 2) |
| Chân 174 | I/O — User I/O pin (bank 2) |
| Chân 175 | VCCIO2 — I/O bank 2 reference voltage |
| Chân 176 | I/O — User I/O pin (bank 1) |
| Chân 177 | I/O — User I/O pin (bank 1) |
| Chân 178 | I/O — User I/O pin (bank 1) |
| Chân 179 | I/O — User I/O pin (bank 1) |
| Chân 180 | GND — Ground |
| Chân 181 | I/O — User I/O pin (bank 1) |
| Chân 182 | I/O — User I/O pin (bank 1) |
| Chân 183 | I/O — User I/O pin (bank 1) |
| Chân 184 | I/O — User I/O pin (bank 1) |
| Chân 185 | VCCINT — Core supply voltage, 2.5 V |
| Chân 186 | I/O — User I/O pin (bank 3) |
| Chân 187 | I/O — User I/O pin (bank 3) |
| Chân 188 | I/O — User I/O pin (bank 3) |
| Chân 189 | I/O — User I/O pin (bank 3) |
| Chân 190 | GND — Ground |
| Chân 191 | I/O — User I/O pin (bank 3) |
| Chân 192 | I/O — User I/O pin (bank 3) |
| Chân 193 | I/O — User I/O pin (bank 3) |
| Chân 194 | I/O — User I/O pin (bank 3) |
| Chân 195 | VCCIO3 — I/O bank 3 reference voltage |
| Chân 196 | I/O — User I/O pin (bank 4) |
| Chân 197 | I/O — User I/O pin (bank 4) |
| Chân 198 | I/O — User I/O pin (bank 4) |
| Chân 199 | I/O — User I/O pin (bank 4) |
| Chân 200 | GND — Ground |
| Chân 201 | I/O — User I/O pin (bank 4) |
| Chân 202 | I/O — User I/O pin (bank 4) |
| Chân 203 | I/O — User I/O pin (bank 4) |
| Chân 204 | I/O — User I/O pin (bank 4) |
| Chân 205 | VCCINT — Core supply voltage, 2.5 V |
| Chân 206 | TDO — JTAG Test Data Out |
| Chân 207 | DEV_CLRn — Device clear (active low) |
| Chân 208 | DEV_OE — Device output enable |
Ứng dụng tiêu biểu
EPM7256BQC208-7 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPM7256BQC208-7 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Same PQFP-208 package and 256 macro cells as MAX 7000A, but on a 2.5 V core (vsEPM7256AQC208-7)
- Industrial temperature option in the same PQFP-208 footprint (vsEPM7256BQI208-7)
- Same die as EPM7256BQC208-10 with -7 speed grade for 25% faster tPD (vsEPM7256BQC208-10)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.