EPM7256AQI208-10 - 256-Macrocell MAX 7000A CPLD, 10ns, PQFP-208 | Intel
MPN: EPM7256AQI208-10 ✗ Cuối đờiEPM7256AQI208-10 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho EPM7256AQI208-10 — 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 EPM7256AQI208-10 (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Operating Temperature, Maximum Internal Frequency, User I/O Pins.
EPM7256AQC208-7
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7256AEQC208-5N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7256AQC208-10
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
EPM7256AEFC256-7
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
EPM7256AEQI208-7N
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →EPM3256AQC208-10N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7256AQI208-10 Tỷ lệ tối đa & tính chất điện
| 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) |
| Hộp | PQFP-208 |
| Programmability | EEPROM, in-system via JTAG (IEEE 1149.1) |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Process Technology | CMOS, EEPROM-based |
| Trạng thái RoHS | Compliant (lead-free per distributor data) |
Cấu hình chân EPM7256AQI208-10
| Chân 1 | I/O — User I/O - bank 1 |
| Chân 2 | I/O — User I/O - bank 1 |
| Chân 3 | I/O — User I/O - bank 1 |
| Chân 4 | I/O — User I/O - bank 1 |
| Chân 5 | I/O — User I/O - bank 1 |
| Chân 6 | GND — Ground |
| Chân 7 | I/O — User I/O - bank 1 |
| Chân 8 | I/O — User I/O - bank 1 |
| Chân 9 | I/O — User I/O - bank 1 |
| Chân 10 | I/O — User I/O - bank 1 |
| Chân 11 | I/O — User I/O - bank 1 |
| Chân 12 | VCCIO1 — I/O bank 1 supply voltage |
| Chân 13 | I/O — User I/O - bank 1 |
| Chân 14 | I/O — User I/O - bank 1 |
| Chân 15 | I/O — User I/O - bank 1 |
| Chân 16 | I/O — User I/O - bank 1 |
| Chân 17 | I/O — User I/O - bank 1 |
| Chân 18 | GND — Ground |
| Chân 19 | I/O — User I/O - bank 1 |
| Chân 20 | I/O — User I/O - bank 1 |
| Chân 21 | I/O — User I/O - bank 1 |
| Chân 22 | I/O — User I/O - bank 1 |
| Chân 23 | I/O — User I/O - bank 1 |
| Chân 24 | VCCIO1 — I/O bank 1 supply voltage |
| Chân 25 | I/O — User I/O - bank 1 |
| Chân 26 | I/O — User I/O - bank 1 |
| Chân 27 | I/O — User I/O - bank 1 |
| Chân 28 | I/O — User I/O - bank 1 |
| Chân 29 | I/O — User I/O - bank 1 |
| Chân 30 | GND — Ground |
| Chân 31 | I/O — User I/O - bank 1 |
| Chân 32 | I/O — User I/O - bank 1 |
| Chân 33 | I/O — User I/O - bank 1 |
| Chân 34 | I/O — User I/O - bank 1 |
| Chân 35 | I/O — User I/O - bank 1 |
| Chân 36 | VCCIO1 — I/O bank 1 supply voltage |
| Chân 37 | I/O — User I/O - bank 1 |
| Chân 38 | I/O — User I/O - bank 1 |
| Chân 39 | I/O — User I/O - bank 1 |
| Chân 40 | I/O — User I/O - bank 1 |
| Chân 41 | I/O — User I/O - bank 1 |
| Chân 42 | GND — Ground |
| Chân 43 | I/O — User I/O - bank 1 |
| Chân 44 | I/O — User I/O - bank 1 |
| Chân 45 | I/O — User I/O - bank 1 |
| Chân 46 | I/O — User I/O - bank 1 |
| Chân 47 | I/O — User I/O - bank 1 |
| Chân 48 | VCCIO1 — I/O bank 1 supply voltage |
| Chân 49 | I/O — User I/O - bank 1 |
| Chân 50 | I/O — User I/O - bank 1 |
| Chân 51 | I/O — User I/O - bank 1 |
| Chân 52 | I/O — User I/O - bank 1 |
| Chân 53 | I/O — User I/O - bank 1 |
| Chân 54 | GND — Ground |
| Chân 55 | I/O — User I/O - bank 2 |
| Chân 56 | I/O — User I/O - bank 2 |
| Chân 57 | I/O — User I/O - bank 2 |
| Chân 58 | I/O — User I/O - bank 2 |
| Chân 59 | I/O — User I/O - bank 2 |
| Chân 60 | VCCIO2 — I/O bank 2 supply voltage |
| Chân 61 | I/O — User I/O - bank 2 |
| Chân 62 | I/O — User I/O - bank 2 |
| Chân 63 | I/O — User I/O - bank 2 |
| Chân 64 | I/O — User I/O - bank 2 |
| Chân 65 | I/O — User I/O - bank 2 |
| Chân 66 | GND — Ground |
| Chân 67 | I/O — User I/O - bank 2 |
| Chân 68 | I/O — User I/O - bank 2 |
| Chân 69 | I/O — User I/O - bank 2 |
| Chân 70 | I/O — User I/O - bank 2 |
| Chân 71 | I/O — User I/O - bank 2 |
| Chân 72 | VCCIO2 — I/O bank 2 supply voltage |
| Chân 73 | I/O — User I/O - bank 2 |
| Chân 74 | I/O — User I/O - bank 2 |
| Chân 75 | I/O — User I/O - bank 2 |
| Chân 76 | I/O — User I/O - bank 2 |
| Chân 77 | I/O — User I/O - bank 2 |
| Chân 78 | GND — Ground |
| Chân 79 | TDI — JTAG Test Data In |
| Chân 80 | TMS — JTAG Test Mode Select |
| Chân 81 | TCK — JTAG Test Clock |
| Chân 82 | VCC — Core supply voltage (3.3V) |
| Chân 83 | TDO — JTAG Test Data Out |
| Chân 84 | GND — Ground |
| Chân 85 | I/O — User I/O - bank 3 |
| Chân 86 | I/O — User I/O - bank 3 |
| Chân 87 | I/O — User I/O - bank 3 |
| Chân 88 | I/O — User I/O - bank 3 |
| Chân 89 | I/O — User I/O - bank 3 |
| Chân 90 | VCCIO3 — I/O bank 3 supply voltage |
| Chân 91 | I/O — User I/O - bank 3 |
| Chân 92 | I/O — User I/O - bank 3 |
| Chân 93 | I/O — User I/O - bank 3 |
| Chân 94 | I/O — User I/O - bank 3 |
| Chân 95 | I/O — User I/O - bank 3 |
| Chân 96 | GND — Ground |
| Chân 97 | I/O — User I/O - bank 3 |
| Chân 98 | I/O — User I/O - bank 3 |
| Chân 99 | I/O — User I/O - bank 3 |
| Chân 100 | I/O — User I/O - bank 3 |
| Chân 101 | I/O — User I/O - bank 3 |
| Chân 102 | VCCIO3 — I/O bank 3 supply voltage |
| Chân 103 | I/O — User I/O - bank 3 |
| Chân 104 | I/O — User I/O - bank 3 |
| Chân 105 | I/O — User I/O - bank 3 |
| Chân 106 | I/O — User I/O - bank 3 |
| Chân 107 | I/O — User I/O - bank 3 |
| Chân 108 | GND — Ground |
| Chân 109 | I/O — User I/O - bank 3 |
| Chân 110 | I/O — User I/O - bank 3 |
| Chân 111 | I/O — User I/O - bank 3 |
| Chân 112 | I/O — User I/O - bank 3 |
| Chân 113 | I/O — User I/O - bank 3 |
| Chân 114 | VCCIO3 — I/O bank 3 supply voltage |
| Chân 115 | I/O — User I/O - bank 3 |
| Chân 116 | I/O — User I/O - bank 3 |
| Chân 117 | I/O — User I/O - bank 3 |
| Chân 118 | I/O — User I/O - bank 3 |
| Chân 119 | I/O — User I/O - bank 3 |
| Chân 120 | GND — Ground |
| Chân 121 | GCLK2 — Global clock input 2 |
| Chân 122 | OE2 — Output enable 2 |
| Chân 123 | I/O — User I/O - bank 4 |
| Chân 124 | I/O — User I/O - bank 4 |
| Chân 125 | I/O — User I/O - bank 4 |
| Chân 126 | I/O — User I/O - bank 4 |
| Chân 127 | I/O — User I/O - bank 4 |
| Chân 128 | VCCIO4 — I/O bank 4 supply voltage |
| Chân 129 | I/O — User I/O - bank 4 |
| Chân 130 | I/O — User I/O - bank 4 |
| Chân 131 | I/O — User I/O - bank 4 |
| Chân 132 | I/O — User I/O - bank 4 |
| Chân 133 | I/O — User I/O - bank 4 |
| Chân 134 | GND — Ground |
| Chân 135 | I/O — User I/O - bank 4 |
| Chân 136 | I/O — User I/O - bank 4 |
| Chân 137 | I/O — User I/O - bank 4 |
| Chân 138 | I/O — User I/O - bank 4 |
| Chân 139 | I/O — User I/O - bank 4 |
| Chân 140 | VCCIO4 — I/O bank 4 supply voltage |
| Chân 141 | I/O — User I/O - bank 4 |
| Chân 142 | I/O — User I/O - bank 4 |
| Chân 143 | I/O — User I/O - bank 4 |
| Chân 144 | I/O — User I/O - bank 4 |
| Chân 145 | I/O — User I/O - bank 4 |
| Chân 146 | GND — Ground |
| Chân 147 | I/O — User I/O - bank 4 |
| Chân 148 | I/O — User I/O - bank 4 |
| Chân 149 | I/O — User I/O - bank 4 |
| Chân 150 | I/O — User I/O - bank 4 |
| Chân 151 | I/O — User I/O - bank 4 |
| Chân 152 | VCCIO4 — I/O bank 4 supply voltage |
| Chân 153 | I/O — User I/O - bank 4 |
| Chân 154 | I/O — User I/O - bank 4 |
| Chân 155 | I/O — User I/O - bank 4 |
| Chân 156 | I/O — User I/O - bank 4 |
| Chân 157 | I/O — User I/O - bank 4 |
| Chân 158 | GND — Ground |
| Chân 159 | I/O — User I/O - bank 4 |
| Chân 160 | I/O — User I/O - bank 4 |
| Chân 161 | I/O — User I/O - bank 4 |
| Chân 162 | I/O — User I/O - bank 4 |
| Chân 163 | I/O — User I/O - bank 4 |
| Chân 164 | VCCIO4 — I/O bank 4 supply voltage |
| Chân 165 | I/O — User I/O - bank 4 |
| Chân 166 | I/O — User I/O - bank 4 |
| Chân 167 | I/O — User I/O - bank 4 |
| Chân 168 | I/O — User I/O - bank 4 |
| Chân 169 | I/O — User I/O - bank 4 |
| Chân 170 | GND — Ground |
| Chân 171 | I/O — User I/O - bank 4 |
| Chân 172 | I/O — User I/O - bank 4 |
| Chân 173 | I/O — User I/O - bank 4 |
| Chân 174 | I/O — User I/O - bank 4 |
| Chân 175 | I/O — User I/O - bank 4 |
| Chân 176 | VCCIO4 — I/O bank 4 supply voltage |
| Chân 177 | I/O — User I/O - bank 4 |
| Chân 178 | I/O — User I/O - bank 4 |
| Chân 179 | I/O — User I/O - bank 4 |
| Chân 180 | I/O — User I/O - bank 4 |
| Chân 181 | I/O — User I/O - bank 4 |
| Chân 182 | GND — Ground |
| Chân 183 | GCLK1 — Global clock input 1 |
| Chân 184 | OE1 — Output enable 1 |
| Chân 185 | I/O — User I/O - bank 1 |
| Chân 186 | I/O — User I/O - bank 1 |
| Chân 187 | I/O — User I/O - bank 1 |
| Chân 188 | I/O — User I/O - bank 1 |
| Chân 189 | I/O — User I/O - bank 1 |
| Chân 190 | VCCIO1 — I/O bank 1 supply voltage |
| Chân 191 | I/O — User I/O - bank 1 |
| Chân 192 | I/O — User I/O - bank 1 |
| Chân 193 | I/O — User I/O - bank 1 |
| Chân 194 | I/O — User I/O - bank 1 |
| Chân 195 | I/O — User I/O - bank 1 |
| Chân 196 | GND — Ground |
| Chân 197 | I/O — User I/O - bank 1 |
| Chân 198 | I/O — User I/O - bank 1 |
| Chân 199 | I/O — User I/O - bank 1 |
| Chân 200 | I/O — User I/O - bank 1 |
| Chân 201 | I/O — User I/O - bank 1 |
| Chân 202 | VCCIO1 — I/O bank 1 supply voltage |
| Chân 203 | I/O — User I/O - bank 1 |
| Chân 204 | I/O — User I/O - bank 1 |
| Chân 205 | I/O — User I/O - bank 1 |
| Chân 206 | I/O — User I/O - bank 1 |
| Chân 207 | I/O — User I/O - bank 1 |
| Chân 208 | GND — Ground |
Ứng dụng tiêu biểu
EPM7256AQI208-10 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPM7256AQI208-10 — 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 | 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 |
Bảo phân biệt quan trọng
- Industrial temperature range with full -40C to +85C operation (vsEPM7256AQC208-7)
- Largest macrocell density in MAX 7000A PQFP-208 line (vsEPM7256AETI144-7N)
- MultiVolt I/O for 5V/3.3V/2.5V mixed-voltage interfacing (vsEPM3256AQC208-10N)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
