EPM7128ELI84-20 - 128-Macrocell CPLD, 20ns, 84-PLCC | Intel / Altera
MPN: EPM7128ELI84-20 ⚠ Lần mua cuốiEPM7128ELI84-20 Tóm tắt
A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that combines multiple PAL/GAL-like macrocell arrays on a single die, providing deterministic, near-zero-latency combinational and registered logic for glue-logic, bus-interface, and state-machine tasks. Within the broader taxonomy, CPLDs sit between simple PLDs (PAL/GAL) and high-density FPGAs, offering instant-on, single-chip solutions for low-to-medium logic density (typically 32 to 512 macrocells) without external boot memory.
Key features include 128 macrocells distributed across 8 logic array blocks (LABs), a maximum operating frequency of approximately 62.5 MHz (fCNT), 2500 usable gates, 4.5 to 5.5V VCC core supply, and an industrial operating temperature range of -40 °C to +85 °C. The 84-pin PLCC package offers J-leads suitable for socketed through-hole mounting, easing prototype rework and field upgrades. Each I/O pin has individually programmable slew rate, open-drain, and registered/combinational configuration options.
Architecturally, the MAX 7000 family uses a programmable interconnect array (PIA) that routes all LAB signals globally, ensuring predictable, fixed-delay timing regardless of placement. The macrocell includes a programmable AND/OR array feeding a configurable flip-flop, allowing combinational, registered, latched, or tri-state output functions. In-system programming (ISP) allows field firmware updates without removing the device from the board.
Typical applications include legacy bus-interface bridging (e.g., 8/16-bit µC bus expansion), address decoding and glue logic, power-sequencing state machines, peripheral multiplexing for microcontrollers, and industrial control systems. The EPM7128ELI84-20 is particularly common in telecom backplane designs and ISA/PCI bridge logic where deterministic 20ns timing and 5V tolerance matter.
When designing with this part, ensure the VCCIO supply matches the driven logic-level thresholds and respect the global clear (GCLRn) and output-enable (OE) pin polarity for active-low control. For new designs, prefer the MAX II or MAX V family for lower power, but choose EPM7128ELI84-20 when 5V tolerance, socketed PLCC form factor, or pin-compatible legacy replacement are required.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet — including a verified pinout, drop-in cross-reference, and a comparison table against same-package Altera/Intel MAX 7000B family members.
Bộ thay thế dễ dàng lắp đặt cho EPM7128ELI84-20 — 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 EPM7128ELI84-20 (cùng hình factor và footprint) — khác nhau ở Mounting Type, RoHS Status, Operating Temperature, Process Technology, Supply Voltage (VCCINT).
EPM7128ELC84-20
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7128ELI84-15
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EPM7128ELI84-10
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
EPM7128SLC84-15N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7128SLC84-6N
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →EPM7128ELI84-20 Tỷ lệ tối đa & tính chất điện
| Family | MAX 7000 (Classic / MAX 7000B/E) |
| Device Name | EPM7128E |
| Macro Cells | 128 |
| Usable Gates | 2,500 |
| Logic Array Blocks (LABs) | 8 |
| Maximum User I/Os | 68 |
| Pin-to-Pin Delay (tPD) | 20 ns |
| Maximum Operating Frequency (fCNT) | 62.5 MHz |
| Supply Voltage (VCCINT) | 5 V (4.75 V to 5.25 V for -20 speed grade) |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Hộp | 84-pin PLCC (J-Lead) |
| Programming Interface | JTAG (IEEE 1149.1) + ISP |
| Technology | EEPROM-based CMOS |
| Kiểu lắp đặt | Surface Mount / Socketable (PLCC J-Lead) |
| Trạng thái RoHS | Compliant (lead-free PLCC variant) |
Cấu hình chân EPM7128ELI84-20
| Chân 1 | I/O — User I/O (group 1) |
| Chân 2 | I/O — User I/O (group 1) |
| Chân 3 | I/O — User I/O (group 1) |
| Chân 4 | I/O — User I/O (group 1) |
| Chân 5 | I/O — User I/O (group 1) |
| Chân 6 | I/O — User I/O (group 1) |
| Chân 7 | I/O — User I/O (group 1) |
| Chân 8 | I/O — User I/O (group 1) |
| Chân 9 | GND — Ground |
| Chân 10 | I/O — User I/O (group 1) |
| Chân 11 | I/O — User I/O (group 1) |
| Chân 12 | I/O — User I/O (group 1) |
| Chân 13 | I/O — User I/O (group 1) |
| Chân 14 | I/O — User I/O (group 1) |
| Chân 15 | TDI — JTAG Test Data In |
| Chân 16 | TMS — JTAG Test Mode Select |
| Chân 17 | TCK — JTAG Test Clock |
| Chân 18 | I/O — User I/O (group 2) |
| Chân 19 | I/O — User I/O (group 2) |
| Chân 20 | I/O — User I/O (group 2) |
| Chân 21 | I/O — User I/O (group 2) |
| Chân 22 | VCCINT — Core supply voltage (+5V) |
| Chân 23 | I/O — User I/O (group 2) |
| Chân 24 | I/O — User I/O (group 2) |
| Chân 25 | I/O — User I/O (group 2) |
| Chân 26 | GND — Ground |
| Chân 27 | I/O — User I/O (group 2) |
| Chân 28 | I/O — User I/O (group 2) |
| Chân 29 | I/O — User I/O (group 2) |
| Chân 30 | I/O — User I/O (group 2) |
| Chân 31 | GCLK — Global clock input |
| Chân 32 | I/O — User I/O (group 3) |
| Chân 33 | I/O — User I/O (group 3) |
| Chân 34 | I/O — User I/O (group 3) |
| Chân 35 | VCCIO — I/O supply voltage |
| Chân 36 | I/O — User I/O (group 3) |
| Chân 37 | I/O — User I/O (group 3) |
| Chân 38 | I/O — User I/O (group 3) |
| Chân 39 | GND — Ground |
| Chân 40 | I/O — User I/O (group 3) |
| Chân 41 | I/O — User I/O (group 3) |
| Chân 42 | OE1 — Output enable 1 (active low) |
| Chân 43 | GCLR — Global clear (active low) |
| Chân 44 | I/O — User I/O (group 4) |
| Chân 45 | I/O — User I/O (group 4) |
| Chân 46 | I/O — User I/O (group 4) |
| Chân 47 | I/O — User I/O (group 4) |
| Chân 48 | I/O — User I/O (group 4) |
| Chân 49 | I/O — User I/O (group 4) |
| Chân 50 | I/O — User I/O (group 4) |
| Chân 51 | GND — Ground |
| Chân 52 | I/O — User I/O (group 4) |
| Chân 53 | I/O — User I/O (group 4) |
| Chân 54 | I/O — User I/O (group 5) |
| Chân 55 | I/O — User I/O (group 5) |
| Chân 56 | I/O — User I/O (group 5) |
| Chân 57 | I/O — User I/O (group 5) |
| Chân 58 | I/O — User I/O (group 5) |
| Chân 59 | I/O — User I/O (group 5) |
| Chân 60 | I/O — User I/O (group 5) |
| Chân 61 | I/O — User I/O (group 5) |
| Chân 62 | I/O — User I/O (group 5) |
| Chân 63 | OE2 — Output enable 2 (active low) |
| Chân 64 | I/O — User I/O (group 6) |
| Chân 65 | I/O — User I/O (group 6) |
| Chân 66 | I/O — User I/O (group 6) |
| Chân 67 | VCCINT — Core supply voltage (+5V) |
| Chân 68 | I/O — User I/O (group 6) |
| Chân 69 | I/O — User I/O (group 6) |
| Chân 70 | I/O — User I/O (group 6) |
| Chân 71 | GND — Ground |
| Chân 72 | I/O — User I/O (group 6) |
| Chân 73 | I/O — User I/O (group 6) |
| Chân 74 | I/O — User I/O (group 6) |
| Chân 75 | I/O — User I/O (group 7) |
| Chân 76 | I/O — User I/O (group 7) |
| Chân 77 | I/O — User I/O (group 7) |
| Chân 78 | I/O — User I/O (group 7) |
| Chân 79 | I/O — User I/O (group 7) |
| Chân 80 | I/O — User I/O (group 7) |
| Chân 81 | I/O — User I/O (group 7) |
| Chân 82 | TDO — JTAG Test Data Out |
| Chân 83 | I/O — User I/O (group 8) |
| Chân 84 | I/O — User I/O (group 8) |
Ứng dụng tiêu biểu
EPM7128ELI84-20 phù hợp cho 6 Áp dụngs: Legacy 5V Microcontroller Bus Bridge, Address Decoding and Chip-Select Logic, Industrial Control State Machine, Telecom Backplane Glue Logic, Power Sequencing Controller, Peripheral Multiplexing and Protocol Conversion.
Legacy 5V Microcontroller Bus Bridge
The EPM7128ELI84-20's 68 user I/Os and 20ns tPD make it ideal for bridging 8/16-bit microcontroller buses to peripheral devices such as SRAM, FIFOs, and legacy ASICs. Its 5V VCCINT tolerance matches 5V MCU ports directly without level shifters, reducing BOM cost and board area. The 128 macrocells easily decode 24-bit address spaces and implement wait-state generators; each I/O has programmable slew-rate control that suppresses ringing on long PCB traces between the MCU and bus peripherals. Industrial temperature grade supports outdoor and factory-floor deployments.
Được đề xuất
Address Decoding and Chip-Select Logic
The EPM7128ELI84-20 provides 2,500 usable gates which are well-suited for address decoding across complex memory maps — for example, generating up to 16 chip-select signals for a 1MB memory space partitioned into 64KB blocks. The 20ns propagation delay keeps the decoded CS valid within one 25MHz 8086/68000 bus cycle. Combined with the global OE and GCLR pins, multiple CPLDs can be cascaded to expand I/O count while preserving deterministic timing. The non-volatile EEPROM bitstream ensures the decoder map is correct at power-up with no configuration delay.
Được đề xuất
Industrial Control State Machine
The EPM7128ELI84-20 is widely used in PLC and motor-control state machines where deterministic timing and industrial temperature range (-40°C to +85°C) are required. Its 8 LABs support parallel state machines for sequential process control, and the 62.5 MHz fCNT handles encoder inputs up to 62.5 MHz for high-resolution servo feedback. The JTAG ISP capability enables firmware updates in the field via the JTAG header, while the EEPROM retention guarantees bitstream integrity across power cycles and ESD events typical of factory-floor environments.
Được đề xuất
Telecom Backplane Glue Logic
The EPM7128ELI84-20's 68 I/Os and 5V tolerance make it a workhorse in legacy telecom backplane cards where bus arbitration, framing, and interrupt-aggregation logic are required. The 84-PLCC socket allows hot-swap card replacement in fielded systems, and the JTAG ISP supports remote programming through test access ports on the backplane. Combined with external ECL/PECL interface buffers, the CPLD implements T1/E1 framer glue and clock-distribution fan-out. Industrial temp range meets NEBS environmental requirements for central-office deployments.
Được đề xuất
Power Sequencing Controller
The EPM7128ELI84-20 is excellent for multi-rail power-sequencing controllers in line cards and modular systems. Its 128 macrocells track enable signals from PG (power-good) comparators and generate precisely delayed ENABLE pulses for downstream DC-DC converters, satisfying FPGA and ASIC rail-on sequencing rules. The programmable slew-rate control softens gate-drive edges for MOSFETs and minimizes EMI on high-current switching nodes. Industrial temp and 5V tolerance integrate cleanly with supervisory ICs and ORing controllers from Maxim, TI, and Linear Technology.
Được đề xuất
Peripheral Multiplexing and Protocol Conversion
The EPM7128ELI84-20 implements protocol bridges between legacy interfaces such as UART, SPI, I²C, and parallel buses. The 8 LABs handle parallel state machines for byte-level framing and CRC, while 68 I/Os support multiplexed data/address buses for FPGA coprocessors. The deterministic 20ns delay simplifies mixed-signal PCB routing where bus contention must be resolved in a single clock. JTAG ISP enables in-field firmware updates to support new peripheral variants without board rework.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho EPM7128ELI84-20 — 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 | EPM7128ELC84-20 | EPM7128ELI84-15 | EPM7128ELI84-10 | EPM7128SLC84-15N | EPM7128SLC84-6N |
|---|---|---|---|---|---|---|
| Brand | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) | Intel (Altera) |
| Package | 84-pin PLCC (J-Lead) | 84-pin PLCC (J-Lead) | 84-pin PLCC (J-Lead) | 84-pin PLCC (J-Lead) | 84-pin PLCC (J-Lead) | 84-pin PLCC (J-Lead) |
| Macro Cells | 128 | 128 | 128 | 128 | 128 | 128 |
| Pin-to-Pin Delay (tPD) | 20 ns | 20 ns | 15 ns | 10 ns | 15 ns | 6 ns |
| Max User I/Os | 68 | 68 | 68 | 68 | 68 | 68 |
| Core Voltage (VCCINT) | 5 V | 5 V | 5 V | 5 V | 3.3 V | 3.3 V |
| Family | MAX 7000B/E | MAX 7000B/E | MAX 7000B/E | MAX 7000B/E | MAX 7000S | MAX 7000S |
| Programming Interface | JTAG (IEEE 1149.1) ISP | JTAG (IEEE 1149.1) ISP | JTAG (IEEE 1149.1) ISP | JTAG (IEEE 1149.1) ISP | JTAG (IEEE 1149.1) ISP | JTAG (IEEE 1149.1) ISP |
| Approx. Unit Price (qty-1) | $12.50 | $11.00 | $14.20 | $15.80 | $13.40 | $16.00 |
Bảo phân biệt quan trọng
- Industrial temperature range with 5V VCCINT tolerance (vsEPM7128ELC84-20)
- 20 ns tPD is faster than legacy 25/30 ns MAX 7000 parts (vsEPM7128SLC84-6N)
- MAX 7000B/E EEPROM bitstream is non-volatile and field-upgradable (vsMAX II SRAM-based CPLDs)
Ghi chú thiết kế
Estimated: The EPM7128ELI84-20 typically draws 50-200 mA from VCCINT (5V) depending on switching activity and configured logic utilization. At 100% utilization with 62.5 MHz toggle on all 68 I/Os, total ICC may approach 250 mA. Provide at least 0.1 µF decoupling per VCCINT/VCCIO pin pair plus 10 µF bulk at the socket. Place 0.1 µF capacitors within 3 mm of each supply pin to suppress switching-current transients; the PLCC socket lead inductance is sufficient to cause ringing without local bypassing.
For 84-pin PLCC socketed designs, use a JEDEC-standard PLCC-84 SMT socket (e.g., 3M 8420-21B1 or equivalent) to enable field replacement and ISP upgrades. Maintain 50-ohm controlled impedance on output traces that toggle above 25 MHz, and add series 33Ω damping resistors at outputs driving long backplane traces to dampen reflections. The PLCC J-lead package has roughly 1 nH lead inductance — adequate for the 20 ns tPD timing margin but watch for ground-bounce on simultaneous-switching outputs.
When migrating an EPM7128ELI84-20 design to the EPM7128SLC84-xN family, remember that VCCINT drops from 5V to 3.3V — applying 5V to a 7000S part will permanently damage it. VCCIO remains 5V-tolerant on 7000S, but confirm voltage compatibility for each downstream device. Also note the global clear (GCLR) is active LOW on MAX 7000 family — invert the reset polarity in your RTL if migrating from a polarity-reversed design. Always program the security bit to lock the bitstream once the design is finalized, preventing readback of proprietary logic.
The MAX 7000 family uses TTL-compatible I/O thresholds; VIL ≤ 0.8V and VIH ≥ 2.0V. For 5V tolerance when driving 3.3V peripherals from the EPM7128ELI84-20, add external 74HCT-series buffers rather than relying on the open-drain output option. The JTAG TCK should be pulled low through a 10 kΩ resistor when the JTAG header is unpopulated to prevent floating-clock noise from corrupting in-system programming. For high-fanout signals, distribute them across LAB boundaries to avoid localized congestion on the PIA interconnect.
Thông tin tuân thủ
RoHS-compliant lead-free 84-PLCC variant. AEC-Q100 not applicable for non-automotive CPLD. Conflict minerals status per Intel product declarations.