EPM7128AETC144-7N - MAX 7000A CPLD, 128 Macros, 144-TQFP | Intel / Altera
MPN： EPM7128AETC144-7N ✓ 啟用中EPM7128AETC144-7N 概覽
A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EEPROM-based programmable logic device that sits in the broader hierarchy of programmable logic: CPLD → PLD → programmable logic → digital semiconductor. Unlike FPGAs, which use SRAM and require an external configuration flash, CPLDs boot instantly from on-chip non-volatile memory, making them ideal for glue-logic, bus-interface bridging, and power-sequencing tasks where deterministic startup latency (typically <1 ms) is mandatory.
Key features of the EPM7128AETC144-7N include 128 macrocells, 36 user I/Os in the 144-pin TQFP package, In-System Programmability (ISP) via JTAG (IEEE 1149.1), an extended commercial temperature range, and built-in IEEE Std 1149.1 boundary-scan test support. The MAX 7000A architecture combines a programmable interconnect array with each macrocell containing a programmable AND/OR array, a register, and configurable I/O standards.
Technically, the device delivers 4.5 ns logic-array-block propagation delay and supports multi-voltage I/O for interfacing with 2.5 V, 3.3 V, and 5.0 V devices. Its non-volatile EEPROM cells ensure the design is retained without external configuration memory, while the JTAG interface enables in-system reprogramming during prototyping or field updates.
Typical applications include PCI bus interface glue-logic, address decoding for microprocessors and microcontrollers, power-supply sequencing and supervisory logic, industrial control and factory-automation glue logic, and legacy 5 V-to-3.3 V system migration. Designers often select this part to consolidate discrete 74-series logic into a single programmable device while preserving boot-time determinism.
When designing with this device, observe the recommended decoupling scheme (0.1 µF + 10 µF per supply) and ensure the JTAG chain is terminated correctly. The 7.5 ns speed grade is suitable for designs clocked up to ~129.9 MHz; for higher-frequency logic, choose the -5 or -6 speed grade variants.
直接替換替代品，適用於 EPM7128AETC144-7N — 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： EPM7128AETC144-7N （相同外形與佔位） — 差異在於 Package, Supply Voltage (VCCINT), Operating Temperature, Configuration Memory, Process Technology.
EPM7128AETC144-7
✅ 直接替換聯絡詢價
查看資料表 →EPM7128AETC144-10
✅ 直接替換聯絡詢價
查看資料表 →EPM7128AETC144-7N 最大額定值與電氣特性
| Family | MAX 7000A |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Logic Gates | 2500 (2.5K gates) |
| Macro Cells | 128 |
| User I/Os | 36 (in 144-pin TQFP) |
| Maximum Operating Frequency | 129.9 MHz |
| Pin-to-Pin Delay | 7.5 ns |
| Propagation Delay (tpd) | 7.5 ns |
| Supply Voltage (VCCINT) | 3.3 V |
| Process Technology | CMOS, EEPROM-based |
| Programmability | In-System Programmable (ISP) via JTAG |
| Boundary-Scan Test | IEEE Std 1149.1 (JTAG) |
| 工作溫度 | 0C to +70C (commercial) |
| 封裝 | 144-pin TQFP |
| 安裝類型 | Surface Mount |
| Pin-Compatible With | MAX 7000S 5.0V family (144-pin TQFP) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
EPM7128AETC144-7N 144-pin tqfp 腳位配置指南
EPM7128AETC144-7N（144-pin tqfp 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： EPM7128AETC144-7N.
請參閱 資料表 以查看完整腳位配置。
典型應用
EPM7128AETC144-7N 適用於 6 應用s: PCI Bus Interface Glue Logic, Microprocessor Address Decoding, Power Supply Sequencing and Supervisory Logic, Legacy 5V to 3.3V System Migration, Industrial Control and Factory Automation, Communication and Networking Glue Logic.
PCI Bus Interface Glue Logic
The EPM7128AETC144-7N fits PCI bus glue-logic designs where deterministic, sub-microsecond boot time and 3.3 V multi-voltage I/O are mandatory. Its 128 macrocells can implement address decoding, command-encoding, and signal-conditioning logic between a host CPU and a 33 MHz PCI bus. The 7.5 ns tpd and 129.9 MHz fMAX comfortably exceed the 33 MHz PCI clock period (30 ns) with margin for combinational decoding paths. Unlike an FPGA, the non-volatile EEPROM-based CPLD boots instantly at power-on without loading configuration from an external flash, which simplifies board design and reduces BOM cost.
推薦
Microprocessor Address Decoding
The EPM7128AETC144-7N is well-suited to microprocessor address-decoding tasks such as chip-select generation, memory-bank partitioning, and I/O-window mapping. With 128 macrocells and 36 user I/Os, a single CPLD can replace multiple 74HC138/139/154 decoders, simplifying the BOM while improving noise immunity and signal integrity. The 7.5 ns tpd ensures decoded chip-selects remain stable within typical 8/16-bit MCU clock cycles. JTAG-based ISP enables in-circuit reprogramming of the decode map during development without swapping parts.
推薦
Power Supply Sequencing and Supervisory Logic
The EPM7128AETC144-7N is ideal for multi-rail power-supply sequencing and supervisory logic in 3.3 V systems. Its non-volatile boot behavior ensures that power-good (PWRGD), reset, and enable signals are valid at the instant the rails stabilize, before any FPGA or ASIC begins initialization. The 128 macrocells can implement state-machine sequencing for 4-8 supply rails with fault detection, and the JTAG interface allows in-field firmware updates to the sequencing algorithm. Pin compatibility with the 5 V MAX 7000S family simplifies migration of older sequencing designs.
推薦
Legacy 5V to 3.3V System Migration
The EPM7128AETC144-7N provides a clean drop-in migration path for designers transitioning 5.0 V MAX 7000S designs to 3.3 V MAX 7000A operation. Because the 144-pin TQFP footprint is identical, the CPLD can be socket-swapped without PCB rework, immediately reducing I/O bank power consumption and enabling downstream 3.3 V ASICs. Multi-voltage I/O support allows the new MAX 7000A device to drive legacy 5 V peripherals during phased migration. The EPM7128AETC144-7N preserves the JTAG programming chain, so existing development tools and bitstreams can be reused.
推薦
Industrial Control and Factory Automation
The EPM7128AETC144-7N is widely deployed in industrial control and factory-automation systems for glue logic between PLCs, sensors, and motor-driver ICs. Its 128 macrocells handle encoder decoding, PWM generation, and interrupt-aggregation logic, while the 36 I/Os interface to opto-isolated 24 V field wiring via external buffers. The 7.5 ns tpd supports deterministic response times required for safety-rated machine control loops. Pin compatibility across the MAX 7000A family simplifies field replacement and long-term spare-parts management.
推薦
Communication and Networking Glue Logic
The EPM7128AETC144-7N serves as glue logic between networking ASICs, PHYs, and packet processors in routers, switches, and base stations. The 129.9 MHz fMAX allows the CPLD to perform MDIO/LED-status multiplexing, clock-buffer fanout, and SERDES reference-clock steering at gigabit rates. Its non-volatile boot behavior guarantees that PHY reset and initialization sequences complete before the host CPU boots, eliminating race conditions. JTAG-ISP enables in-system reprogramming of the LED-control or clock-routing bitstream during prototyping.
推薦
推薦產品摘要
工程參考資料，適用於 EPM7128AETC144-7N — 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 | EPM7128AETC144-7 | EPM7128AETC144-10 | EPM7128AEFC100-5 |
|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 144-pin TQFP | 144-pin TQFP (same) | 144-pin TQFP (same) | 100-pin TQFP (different) |
| Family | MAX 7000A | MAX 7000A | MAX 7000A | MAX 7000A |
| Macrocells | 128 | 128 | 128 | 128 |
| User I/Os | 36 | 36 | 36 | 84 |
| Pin-to-Pin Delay (tpd) | 7.5 ns | 7.5 ns | 10 ns | 5 ns |
| Core Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| RoHS Compliance | Yes (lead-free 'N' suffix) | No (lead-bearing) | Yes | Yes |
| Pin-Compatible With Target | N/A (this is the reference) | Yes (drop-in 144-TQFP) | Yes (drop-in 144-TQFP) | No (100-TQFP, requires PCB rework) |
主要差異化特點
- Pin-compatible 5V-to-3.3V migration path (對比MAX 7000S family (e.g. EPM7128SQC160-7))
- Non-volatile boot in <1 ms (對比SRAM-based FPGAs (e.g. Cyclone IV))
- Lead-free RoHS-compliant packaging (對比EPM7128AETC144-7 (non-N suffix))
設計說明
The EPM7128AETC144-7N operates from a 3.3 V VCCINT supply and supports multi-voltage I/O (2.5 V, 3.3 V, 5 V tolerant). Use a 0.1 µF decoupling capacitor adjacent to each VCC pin and a bulk 10 µF tantalum or ceramic capacitor on the supply rail. During power-up, ensure VCCINT rises monotonically from 0 V to 3.3 V within the datasheet-specified ramp rate; slow or noisy power ramps can trigger spurious JTAG state-machine transitions. Sequence the VCCIO banks only after VCCINT is stable.
Route the JTAG signals (TCK, TMS, TDI, TDO) as a daisy-chained bus with no stubs and keep traces short (<5 cm). Place the JTAG connector at the board edge for easy access during programming and boundary-scan testing. Provide a ground guard via fence around the JTAG traces to reduce crosstalk. The 144-pin TQFP has a 0.5 mm pitch; use 0.20 mm trace/space design rules with microvia-in-pad for inner-row fan-out if using a 4-layer stack-up.
Estimated: the maximum I/O toggle current for all 36 outputs switching simultaneously at 50 MHz can approach ~250 mA dynamic supply current. Ensure your 3.3 V regulator has at least 20% headroom above this peak and that the ground return path is low-impedance. Do not leave unused I/O pins floating - configure them as outputs driving low in the Quartus pin-assignment file to avoid unwanted input-bounce-induced supply noise. Verify the JTAG chain IDCODE before in-system programming to avoid accidental device mis-identification.
The 7.5 ns tpd corresponds to a maximum recommended clock frequency of 129.9 MHz for internal registered logic; combinational paths crossing multiple logic-array blocks add interconnect delay and reduce the practical fMAX to ~100 MHz for complex designs. Use the Quartus timing analyzer to verify all paths meet setup/hold requirements under worst-case (slow corner, 85C, VCCINT = 3.0 V) conditions. Apply series termination (33 ohm) on high-drive outputs driving >5 cm of trace.
合規資訊
RoHS compliant per the 'N' suffix in the MPN. Lead-free packaging confirmed. AEC-Q100 not applicable for commercial-grade CPLDs. REACH compliance status and conflict-minerals declaration should be confirmed with Intel/Altera for production orders.