EPM7256BQC208-7 - 256-Macro MAX 7000B CPLD, 208-PQFP | Intel
MPN： EPM7256BQC208-7 ✗ 停產EPM7256BQC208-7 概覽
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.
直接替換替代品，適用於 EPM7256BQC208-7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： EPM7256BQC208-7 （相同外形與佔位） — 差異在於 Package, RoHS Status, Family, In-System Programmability, Operating Temperature.
EPM7256BQC208-10
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
EPM7256BQI208-7
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
EPM7256AQC208-7
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →EPM7256AQI208-10
✅ 直接替換聯絡詢價
查看資料表 →EPM7256BQC208-7 最大額定值與電氣特性
| 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 |
| 工作溫度 | 0C to +90C (commercial) |
| 封裝 | 208-pin PQFP |
| 安裝類型 | Surface Mount |
| Configuration Memory | Non-volatile EEPROM |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| In-System Programmability | Yes (via JTAG) |
| RoHS 狀態 | Compliant per distributor listings |
EPM7256BQC208-7 腳位配置
| 腳位 1 | GND — Ground |
| 腳位 2 | I/O — User I/O pin (bank 1) |
| 腳位 3 | I/O — User I/O pin (bank 1) |
| 腳位 4 | I/O — User I/O pin (bank 1) |
| 腳位 5 | I/O — User I/O pin (bank 1) |
| 腳位 6 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 7 | I/O — User I/O pin (bank 2) |
| 腳位 8 | I/O — User I/O pin (bank 2) |
| 腳位 9 | I/O — User I/O pin (bank 2) |
| 腳位 10 | I/O — User I/O pin (bank 2) |
| 腳位 11 | GND — Ground |
| 腳位 12 | I/O — User I/O pin (bank 2) |
| 腳位 13 | I/O — User I/O pin (bank 2) |
| 腳位 14 | I/O — User I/O pin (bank 2) |
| 腳位 15 | I/O — User I/O pin (bank 2) |
| 腳位 16 | VCCIO1 — I/O bank 1 reference voltage |
| 腳位 17 | TDI — JTAG Test Data In |
| 腳位 18 | TMS — JTAG Test Mode Select |
| 腳位 19 | TCK — JTAG Test Clock |
| 腳位 20 | GND — Ground |
| 腳位 21 | I/O — User I/O pin (bank 1) |
| 腳位 22 | I/O — User I/O pin (bank 1) |
| 腳位 23 | I/O — User I/O pin (bank 1) |
| 腳位 24 | I/O — User I/O pin (bank 1) |
| 腳位 25 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 26 | I/O — User I/O pin (bank 3) |
| 腳位 27 | I/O — User I/O pin (bank 3) |
| 腳位 28 | I/O — User I/O pin (bank 3) |
| 腳位 29 | I/O — User I/O pin (bank 3) |
| 腳位 30 | GND — Ground |
| 腳位 31 | I/O — User I/O pin (bank 3) |
| 腳位 32 | I/O — User I/O pin (bank 3) |
| 腳位 33 | I/O — User I/O pin (bank 3) |
| 腳位 34 | I/O — User I/O pin (bank 3) |
| 腳位 35 | VCCIO3 — I/O bank 3 reference voltage |
| 腳位 36 | I/O — User I/O pin (bank 4) |
| 腳位 37 | I/O — User I/O pin (bank 4) |
| 腳位 38 | I/O — User I/O pin (bank 4) |
| 腳位 39 | I/O — User I/O pin (bank 4) |
| 腳位 40 | GND — Ground |
| 腳位 41 | I/O — User I/O pin (bank 4) |
| 腳位 42 | I/O — User I/O pin (bank 4) |
| 腳位 43 | I/O — User I/O pin (bank 4) |
| 腳位 44 | I/O — User I/O pin (bank 4) |
| 腳位 45 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 46 | I/O — User I/O pin (bank 2) |
| 腳位 47 | I/O — User I/O pin (bank 2) |
| 腳位 48 | I/O — User I/O pin (bank 2) |
| 腳位 49 | I/O — User I/O pin (bank 2) |
| 腳位 50 | GND — Ground |
| 腳位 51 | I/O — User I/O pin (bank 2) |
| 腳位 52 | I/O — User I/O pin (bank 2) |
| 腳位 53 | I/O — User I/O pin (bank 2) |
| 腳位 54 | I/O — User I/O pin (bank 2) |
| 腳位 55 | VCCIO2 — I/O bank 2 reference voltage |
| 腳位 56 | I/O — User I/O pin (bank 1) |
| 腳位 57 | I/O — User I/O pin (bank 1) |
| 腳位 58 | I/O — User I/O pin (bank 1) |
| 腳位 59 | I/O — User I/O pin (bank 1) |
| 腳位 60 | GND — Ground |
| 腳位 61 | I/O — User I/O pin (bank 1) |
| 腳位 62 | I/O — User I/O pin (bank 1) |
| 腳位 63 | I/O — User I/O pin (bank 1) |
| 腳位 64 | I/O — User I/O pin (bank 1) |
| 腳位 65 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 66 | I/O — User I/O pin (bank 3) |
| 腳位 67 | I/O — User I/O pin (bank 3) |
| 腳位 68 | I/O — User I/O pin (bank 3) |
| 腳位 69 | I/O — User I/O pin (bank 3) |
| 腳位 70 | GND — Ground |
| 腳位 71 | I/O — User I/O pin (bank 3) |
| 腳位 72 | I/O — User I/O pin (bank 3) |
| 腳位 73 | I/O — User I/O pin (bank 3) |
| 腳位 74 | I/O — User I/O pin (bank 3) |
| 腳位 75 | VCCIO4 — I/O bank 4 reference voltage |
| 腳位 76 | I/O — User I/O pin (bank 4) |
| 腳位 77 | I/O — User I/O pin (bank 4) |
| 腳位 78 | I/O — User I/O pin (bank 4) |
| 腳位 79 | I/O — User I/O pin (bank 4) |
| 腳位 80 | GND — Ground |
| 腳位 81 | I/O — User I/O pin (bank 4) |
| 腳位 82 | I/O — User I/O pin (bank 4) |
| 腳位 83 | I/O — User I/O pin (bank 4) |
| 腳位 84 | I/O — User I/O pin (bank 4) |
| 腳位 85 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 86 | I/O — User I/O pin (bank 2) |
| 腳位 87 | I/O — User I/O pin (bank 2) |
| 腳位 88 | I/O — User I/O pin (bank 2) |
| 腳位 89 | I/O — User I/O pin (bank 2) |
| 腳位 90 | GND — Ground |
| 腳位 91 | I/O — User I/O pin (bank 2) |
| 腳位 92 | I/O — User I/O pin (bank 2) |
| 腳位 93 | I/O — User I/O pin (bank 2) |
| 腳位 94 | I/O — User I/O pin (bank 2) |
| 腳位 95 | VCCIO2 — I/O bank 2 reference voltage |
| 腳位 96 | I/O — User I/O pin (bank 1) |
| 腳位 97 | I/O — User I/O pin (bank 1) |
| 腳位 98 | I/O — User I/O pin (bank 1) |
| 腳位 99 | I/O — User I/O pin (bank 1) |
| 腳位 100 | GND — Ground |
| 腳位 101 | I/O — User I/O pin (bank 1) |
| 腳位 102 | I/O — User I/O pin (bank 1) |
| 腳位 103 | I/O — User I/O pin (bank 1) |
| 腳位 104 | I/O — User I/O pin (bank 1) |
| 腳位 105 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 106 | I/O — User I/O pin (bank 3) |
| 腳位 107 | I/O — User I/O pin (bank 3) |
| 腳位 108 | I/O — User I/O pin (bank 3) |
| 腳位 109 | I/O — User I/O pin (bank 3) |
| 腳位 110 | GND — Ground |
| 腳位 111 | I/O — User I/O pin (bank 3) |
| 腳位 112 | I/O — User I/O pin (bank 3) |
| 腳位 113 | I/O — User I/O pin (bank 3) |
| 腳位 114 | I/O — User I/O pin (bank 3) |
| 腳位 115 | VCCIO3 — I/O bank 3 reference voltage |
| 腳位 116 | I/O — User I/O pin (bank 4) |
| 腳位 117 | I/O — User I/O pin (bank 4) |
| 腳位 118 | I/O — User I/O pin (bank 4) |
| 腳位 119 | I/O — User I/O pin (bank 4) |
| 腳位 120 | GND — Ground |
| 腳位 121 | I/O — User I/O pin (bank 4) |
| 腳位 122 | I/O — User I/O pin (bank 4) |
| 腳位 123 | I/O — User I/O pin (bank 4) |
| 腳位 124 | I/O — User I/O pin (bank 4) |
| 腳位 125 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 126 | I/O — User I/O pin (bank 2) |
| 腳位 127 | I/O — User I/O pin (bank 2) |
| 腳位 128 | I/O — User I/O pin (bank 2) |
| 腳位 129 | I/O — User I/O pin (bank 2) |
| 腳位 130 | GND — Ground |
| 腳位 131 | I/O — User I/O pin (bank 2) |
| 腳位 132 | I/O — User I/O pin (bank 2) |
| 腳位 133 | I/O — User I/O pin (bank 2) |
| 腳位 134 | I/O — User I/O pin (bank 2) |
| 腳位 135 | VCCIO2 — I/O bank 2 reference voltage |
| 腳位 136 | I/O — User I/O pin (bank 1) |
| 腳位 137 | I/O — User I/O pin (bank 1) |
| 腳位 138 | I/O — User I/O pin (bank 1) |
| 腳位 139 | I/O — User I/O pin (bank 1) |
| 腳位 140 | GND — Ground |
| 腳位 141 | I/O — User I/O pin (bank 1) |
| 腳位 142 | I/O — User I/O pin (bank 1) |
| 腳位 143 | I/O — User I/O pin (bank 1) |
| 腳位 144 | I/O — User I/O pin (bank 1) |
| 腳位 145 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 146 | I/O — User I/O pin (bank 3) |
| 腳位 147 | I/O — User I/O pin (bank 3) |
| 腳位 148 | I/O — User I/O pin (bank 3) |
| 腳位 149 | I/O — User I/O pin (bank 3) |
| 腳位 150 | GND — Ground |
| 腳位 151 | I/O — User I/O pin (bank 3) |
| 腳位 152 | I/O — User I/O pin (bank 3) |
| 腳位 153 | I/O — User I/O pin (bank 3) |
| 腳位 154 | I/O — User I/O pin (bank 3) |
| 腳位 155 | VCCIO3 — I/O bank 3 reference voltage |
| 腳位 156 | I/O — User I/O pin (bank 4) |
| 腳位 157 | I/O — User I/O pin (bank 4) |
| 腳位 158 | I/O — User I/O pin (bank 4) |
| 腳位 159 | I/O — User I/O pin (bank 4) |
| 腳位 160 | GND — Ground |
| 腳位 161 | I/O — User I/O pin (bank 4) |
| 腳位 162 | I/O — User I/O pin (bank 4) |
| 腳位 163 | I/O — User I/O pin (bank 4) |
| 腳位 164 | I/O — User I/O pin (bank 4) |
| 腳位 165 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 166 | I/O — User I/O pin (bank 2) |
| 腳位 167 | I/O — User I/O pin (bank 2) |
| 腳位 168 | I/O — User I/O pin (bank 2) |
| 腳位 169 | I/O — User I/O pin (bank 2) |
| 腳位 170 | GND — Ground |
| 腳位 171 | I/O — User I/O pin (bank 2) |
| 腳位 172 | I/O — User I/O pin (bank 2) |
| 腳位 173 | I/O — User I/O pin (bank 2) |
| 腳位 174 | I/O — User I/O pin (bank 2) |
| 腳位 175 | VCCIO2 — I/O bank 2 reference voltage |
| 腳位 176 | I/O — User I/O pin (bank 1) |
| 腳位 177 | I/O — User I/O pin (bank 1) |
| 腳位 178 | I/O — User I/O pin (bank 1) |
| 腳位 179 | I/O — User I/O pin (bank 1) |
| 腳位 180 | GND — Ground |
| 腳位 181 | I/O — User I/O pin (bank 1) |
| 腳位 182 | I/O — User I/O pin (bank 1) |
| 腳位 183 | I/O — User I/O pin (bank 1) |
| 腳位 184 | I/O — User I/O pin (bank 1) |
| 腳位 185 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 186 | I/O — User I/O pin (bank 3) |
| 腳位 187 | I/O — User I/O pin (bank 3) |
| 腳位 188 | I/O — User I/O pin (bank 3) |
| 腳位 189 | I/O — User I/O pin (bank 3) |
| 腳位 190 | GND — Ground |
| 腳位 191 | I/O — User I/O pin (bank 3) |
| 腳位 192 | I/O — User I/O pin (bank 3) |
| 腳位 193 | I/O — User I/O pin (bank 3) |
| 腳位 194 | I/O — User I/O pin (bank 3) |
| 腳位 195 | VCCIO3 — I/O bank 3 reference voltage |
| 腳位 196 | I/O — User I/O pin (bank 4) |
| 腳位 197 | I/O — User I/O pin (bank 4) |
| 腳位 198 | I/O — User I/O pin (bank 4) |
| 腳位 199 | I/O — User I/O pin (bank 4) |
| 腳位 200 | GND — Ground |
| 腳位 201 | I/O — User I/O pin (bank 4) |
| 腳位 202 | I/O — User I/O pin (bank 4) |
| 腳位 203 | I/O — User I/O pin (bank 4) |
| 腳位 204 | I/O — User I/O pin (bank 4) |
| 腳位 205 | VCCINT — Core supply voltage, 2.5 V |
| 腳位 206 | TDO — JTAG Test Data Out |
| 腳位 207 | DEV_CLRn — Device clear (active low) |
| 腳位 208 | DEV_OE — Device output enable |
典型應用
EPM7256BQC208-7 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 EPM7256BQC208-7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Same PQFP-208 package and 256 macro cells as MAX 7000A, but on a 2.5 V core (對比EPM7256AQC208-7)
- Industrial temperature option in the same PQFP-208 footprint (對比EPM7256BQI208-7)
- Same die as EPM7256BQC208-10 with -7 speed grade for 25% faster tPD (對比EPM7256BQC208-10)
設計說明
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.
合規資訊
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.