A42MX24-TQG176M - 36K Gate 5V MX FPGA, 176-TQFP | Microchip
MPN： A42MX24-TQG176M ✓ 啟用中A42MX24-TQG176M 概覽
An FPGA (Field-Programmable Gate Array) is a class of programmable logic IC that implements user-defined digital circuits through configurable logic blocks and interconnect. Within the programmable logic hierarchy, the MX family sits as a single-chip ASIC alternative: unlike SRAM FPGAs it is non-volatile, and unlike antifuse families it is reprogrammable in-system. This positions MX as an ideal platform for integrating legacy PLDs, glue logic, and CPLDs into a single, low-cost, high-volume device.
Key features of the A42MX24 include 36K system gates, dual-voltage 3.3V/5V operation, and D-modules with wide-decode circuitry around the device periphery that provide fast, wide-input AND functions similar to CPLD architectures, enabling efficient state machines and address decoding. The architecture combines C-modules and S-modules for flexible combinational and sequential logic mapping.
Technically, the MX family uses a flexible 5.0V-tolerant fabric with 0.45um flash-based configuration storage, so designs retain their programming through power cycles without external configuration devices. The 176-TQFP package is a widely available gull-wing surface-mount format compatible with standard reflow assembly.
Typical applications include industrial control systems, military and defense upgrades of 5V-era designs, legacy PLD consolidation, bus interfacing, and high-volume embedded systems where a reliable single-chip ASIC alternative is required.
Design consideration: budget power distribution for the 3.3V/5V dual-rail requirements and verify I/O bank voltage assignments against the 40MX/42MX datasheet before pin locking.
直接替換替代品，適用於 A42MX24-TQG176M — 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： A42MX24-TQG176M （相同外形與佔位） — 差異在於 Package, Process Technology, Supply Voltage, RoHS Status, System Gates.
A42MX24-1TQG176I
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-TQG176M
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A42MX16-3TQG176
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A42MX09-TQG176A
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →A42MX24-3TQ176I
✅ 直接替換📋 參考替代品（不在目錄中）
A42MX24-TQG176M 最大額定值與電氣特性
| Family | MX (42MX) |
| System Gates | 36,000 |
| Logic Cells | 912 |
| Number of I/O | 150 |
| 供應電壓 | 3.3 V / 5 V |
| Process Technology | 0.45 um |
| Programmability Type | Flash-based, non-volatile, reprogrammable |
| 封裝 | 176-TQFP (LQFP) |
| 安裝類型 | Surface Mount |
| Special Blocks | D-modules with wide-decode circuitry |
| Packaging Suffix M | Tray packing |
| RoHS 狀態 | Lead Free (G = green/lead-free suffix) |
| 類別 | FPGAs (Field Programmable Gate Array) |
| ASIC Alternative | Single-chip ASIC alternative, single-chip solution |
A42MX24-TQG176M 176-tqfp (lqfp) 腳位配置指南
A42MX24-TQG176M（176-tqfp (lqfp) 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： A42MX24-TQG176M.
請參閱 資料表 以查看完整腳位配置。
典型應用
A42MX24-TQG176M 適用於 6 應用s: Legacy PLD and Glue Logic Consolidation, Industrial Control Systems, Military and Defense Legacy Upgrades, Bus Interfacing and Protocol Bridging, High-Volume Embedded Systems, State Machines and Sequencing Logic.
Legacy PLD and Glue Logic Consolidation
The A42MX24-TQG176M is explicitly positioned by Microchip as a platform for integrating legacy PLDs into a single, low-cost device. Its 36K system gates and 912 cells absorb multiple 22V10-class CPLDs, PALs, and GALs, while the 5.0V-tolerant fabric directly drives and receives 5V TTL-level signals that legacy boards use. D-modules with wide-decode circuitry provide fast wide-input AND functions similar to CPLD architectures, ideal for address decoding and chip-select generation. Because the fabric is flash-based and non-volatile, the replacement retains configuration at power-on without a boot PROM, simplifying BOM and startup behavior in service-critical legacy equipment.
推薦
Industrial Control Systems
In factory automation and motor control backplanes, 5V logic levels remain common, and the A42MX24's dual 3.3V/5V operation lets it interface directly with legacy sensors, drives, and PLC I/O cards without level shifters. The 150 user I/O in the 176-TQFP package provide ample parallel signal count for relay control, encoder interfaces, and status buses. The flash-based fabric tolerates the power interruptions typical of industrial environments and restarts deterministically. Designers should budget the device power supply for the 5V rail and verify I/O bank assignments per the 40MX/42MX datasheet before pin locking to avoid rework on the 4-layer control PCB.
推薦
Military and Defense Legacy Upgrades
Defense platforms originally designed around 5V Actel MX devices frequently require ongoing production replacements decades after original design. The A42MX24-TQG176M, descended from the Actel/Microsemi MX family, preserves the original architecture, timing, and 5.0V I/O characteristics so existing bitstreams port without redesign. The non-volatile flash configuration eliminates configuration-storage parts that fail screening, and the 0.45um mature process offers stable, documented long-term supply. Distributors including FTC Electronics and Microchip USA serve the defense channel for this MPN. For extended-temperature deploys, pair with the industrial-grade A42MX24-1TQG176I variant on the identical footprint.
推薦
Bus Interfacing and Protocol Bridging
The A42MX24's D-module wide-decode blocks give it CPLD-like wide-input decode speed, making it effective as a bridge between parallel buses (ISA-like backplanes, VME-adjacent boards, or proprietary 8/16-bit buses) and modern digital logic. With 150 I/O and 5V-tolerant pins, one device can terminate an entire legacy bus while presenting a clean 3.3V interface to a microprocessor. The 36K gate budget accommodates bus arbiters, wait-state generators, and interrupt controllers. Because MX is reprogrammable in-system, bus timing tweaks discovered during integration can be re-fitted without touching the PCB, shortening bring-up cycles on multi-revision hardware.
推薦
High-Volume Embedded Systems
Microchip markets MX as a high-volume, low-cost single-chip ASIC alternative. At 36K system gates, the A42MX24 replaces a mask ASIC for volumes where NRE cost cannot be justified, with the added benefit of field reprogrammability for post-shipment fixes. The 176-TQFP package is compatible with standard reflow assembly lines and widely supported by contract manufacturers. The M suffix tray packing suits high-speed pick-and-place lines ordering in thousands. Distributor data shows 7 Octopart-listed sources, ensuring supply-chain redundancy for multi-year production programs such as meters, gateways, and industrial instruments.
推薦
State Machines and Sequencing Logic
The MX architecture's combination of C-modules and S-modules maps wide state machines efficiently, and D-modules implement fast decode of state outputs for glitch-free control sequencing. In power-supply controllers and test fixtures, the A42MX24 sequences rails, generates enables, and monitors fault lines at 5V logic levels. The non-volatile flash configuration means the sequencer is active within microseconds of power application, earlier than an SRAM FPGA that must load configuration first, a decisive advantage in power-fault and brownout handling. With 36K gates there is ample room for counters, comparators, and fault-latch logic alongside the main sequencer.
推薦
推薦產品摘要
工程參考資料，適用於 A42MX24-TQG176M — 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 | A42MX24-1TQG176I | A42MX16-TQG176M | A42MX09-TQG176A | A42MX24-3TQ176I |
|---|---|---|---|---|---|
| Package | 176-TQFP | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same | 176-TQFP - same |
| Brand | Microchip Technology (Actel/Microsemi legacy) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 36,000 | 36,000 | 24,000 | 9,000 | 36,000 |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Speed Grade | Standard (slowest bin) | -1 (one grade faster) | Standard | A variant | -3 (fastest) |
主要差異化特點
- 5V-tolerant flash FPGA fabric (對比A42MX16-TQG176M)
- Highest speed grade availability (對比A42MX24-1TQG176I)
- Green lead-free package code (對比A42MX24-3TQ176I)
設計說明
The A42MX24 operates from dual 3.3V/5V rails. Decouple each supply with at least 0.1uF ceramic capacitors per power pin plus bulk 10uF near the device. The 5.0V-tolerant I/O banks must each be assigned a consistent voltage in Libero before routing; mixing 5V legacy signals and 3.3V logic on one bank risks exceeding I/O specifications. Measure inrush at power-up since the flash fabric draws configuration current briefly at startup.
The 176-TQFP gull-wing package requires a footprint per the Microchip/Microsemi MX datasheet mechanical drawing with 0.5mm lead pitch. Use a ground plane under the device and return each ground pin directly to it. For the M (tray) packing, ensure your assembly line moisture baking procedure follows the MSL rating on the moisture barrier bag label before reflow.
Do not confuse ordering-code suffixes: G = green/lead-free package, M = tray packing, I = industrial temperature, and the numeric prefix (-1, -2, -3) is the speed grade. A42MX24-3TQ176I lacks the G (non-green package) while sharing the die. Pin-lock early in Libero SoC because D-module wide-decode resources are located around the device periphery and pin assignments directly affect achievable decode timing.
合規資訊
G suffix denotes green/lead-free package. Distributor listings (Abacus Technologies) report EU RoHS compliant, REACH compliant, DRC conflict free. Not an automotive AEC-Q100 device.
