A42MX09-3PLG84 - 14K Gate FPGA, 84-PLCC | Microchip
MPN： A42MX09-3PLG84 ✓ 啟用中A42MX09-3PLG84 概覽
An FPGA (Field-Programmable Gate Array) is a reprogrammable semiconductor device that implements digital logic through configurable logic blocks and programmable interconnect. Within the programmable logic hierarchy - gate array -> FPGA -> programmable SoC - the MX family occupies the cost-effective, 5V-tolerant segment, positioned as a single-chip ASIC alternative for legacy and high-reliability designs.
Key features include the flexible 5.0V-compatible architecture, 72 user I/O pins in a ceramic-friendly PLCC footprint, and single-chip integration that replaces multi-chip legacy PLD solutions. According to Microsemi product literature, the MX family shortens system design cycles while delivering high-volume, low-cost programmable integration suitable for industrial and aerospace-adjacent platforms.
Architecturally, the A42MX09 uses Microsemi's MX logic module structure combining combinatorial and sequential modules, programmed via antifuse-based configuration that is non-volatile and immediately active at power-up - no configuration PROM is required, an advantage over SRAM FPGAs such as Xilinx XC4000-class devices where configuration storage is mandatory.
Typical applications include legacy PLD consolidation, industrial control glue logic, military/aerospace upgrade programs needing 5V I/O, and bridging/interfacing in mixed 3.3V/5V systems.
Design consideration: the PLCC-84 package is through-hole-friendly for socketed designs but verify J-lead coplanarity in reflow assembly; use Microchip Libero/M Designer toolchain for implementation.
直接替換替代品，適用於 A42MX09-3PLG84 — 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： A42MX09-3PLG84 （相同外形與佔位） — 差異在於 Package, Family, System Gates, RoHS Status, Operating Temperature.
A42MX09-3PLG84I
✅ 直接替換聯絡詢價
查看資料表 →A42MX09-FPLG84
✅ 直接替換📋 參考替代品（不在目錄中）
A42MX16-3PLG84
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-1PLG84I
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-1PLG84
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-2PL84I
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
A42MX09-3PLG84 最大額定值與電氣特性
| Family | MX (42MX) |
| System Gates | 14000 |
| Logic Cells | 336 |
| User I/O | 72 |
| Toggle Rate (core) | 177 MHz |
| Toggle Rate (I/O) | 296 MHz |
| Process Technology | 0.45 um |
| 供應電壓 | 3.3 V / 5 V |
| Speed Grade | -3 |
| 封裝 | 84-Pin PLCC (LCC J-Lead, PLG84) |
| 安裝類型 | Surface Mount |
| Configuration Type | Antifuse (non-volatile, live at power-up) |
A42MX09-3PLG84 腳位配置
| 腳位 1 | IO — User I/O pin (PLCC-84 MX device, I/O names assigned in Designer tool) [DATA_NEEDED: exact per-pin names from datasheet] |
| 腳位 12 | VCC — Core/I/O supply 3.3V or 5V [DATA_NEEDED: exact pin assignment] |
| 腳位 42 | GND — Ground [DATA_NEEDED: exact pin assignment] |
| 腳位 30 | CLK — Dedicated clock input [DATA_NEEDED: exact pin assignment] |
典型應用
A42MX09-3PLG84 適用於 6 應用s: Legacy PLD Consolidation, Industrial Control Systems, Aerospace & Defense Legacy Upgrades, Mixed 3.3V/5V System Bridging, Test & Measurement Equipment, Communication & Networking Interface Cards.
Legacy PLD Consolidation
The MX family is explicitly positioned by Microchip as a platform for integrating legacy PLDs into a single low-cost device. With 14K gates, 336 cells, and 5V-tolerant I/O, the A42MX09-3PLG84 can absorb multiple TTL/FACT glue-logic devices and older PAL/GAL arrays into one antifuse FPGA. Because configuration is non-volatile and live at power-up, the consolidated design behaves like hard-wired logic with no boot delay - critical for systems replacing discrete 5V logic where startup behavior must be identical.
推薦
Industrial Control Systems
In factory automation and motor-control peripheral boards, the A42MX09-3PLG84 provides deterministic, glitch-free logic with 177 MHz core toggle rates and direct 5V I/O compatibility for sensors and actuators designed around TTL levels. The antifuse configuration cannot be corrupted by noise or brownouts, unlike SRAM FPGAs, making it well suited to electrically harsh industrial environments. Its 72 user I/O handles encoder, limit-switch, and relay-driver interfacing without external buffering in many designs.
推薦
Aerospace & Defense Legacy Upgrades
Microsemi (now Microchip) MX FPGAs are widely used in defense sustainment programs where 5V systems must remain in service for decades. The A42MX09's one-time-programmable antifuse technology is resistant to configuration upsets, an important reliability attribute in high-radiation or high-vibration environments. When a 14K-gate PLCC-84 upgrade path is required, the extended-temperature A42MX09-3PLG84I and higher-density A42MX16 siblings in the same footprint preserve board-level qualification with minimal redesign.
推薦
Mixed 3.3V/5V System Bridging
The 3.3V/5V dual supply operation of the MX architecture makes the A42MX09-3PLG84 a natural bridge between modern 3.3V microcontrollers and 5V legacy peripherals. Because the device natively tolerates 5V I/O, level-shifting ICs can often be eliminated, reducing BOM cost and failure points. Designers place the FPGA between a 3.3V host bus and 5V backplanes, using its 296 MHz I/O toggle capability for fast strobes while maintaining TTL thresholds on the 5V side.
推薦
Test & Measurement Equipment
Bench instruments and ATE fixtures frequently need custom sequencers, counters, and bus controllers implemented in reprogrammable logic. The A42MX09-3PLG84's 177 MHz core speed supports high-resolution timing generation, while the PLCC-84 socket-friendly J-lead package allows field replacement in instrument service. Antifuse one-time programming also provides a tamper-resistant configuration for calibration logic, since the programmed pattern cannot be read out or altered like SRAM bitstreams.
推薦
Communication & Networking Interface Cards
For industrial networking cards and protocol bridges, the A42MX09-3PLG84 implements state machines for legacy fieldbus protocols, serial framing, and address decoding. Its 72 I/O pins can terminate parallel data buses directly, and the 296 MHz I/O toggle rate comfortably covers interface clocking requirements well above typical fieldbus rates. The 5V-compatible I/O simplifies interfacing with RS-485 transceivers and optocoupled inputs common in installed industrial networks.
推薦
推薦產品摘要
工程參考資料，適用於 A42MX09-3PLG84 — 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 | A42MX09-3PLG84I | A42MX09-FPLG84 | A42MX16-3PLG84 | A42MX16-1PLG84I |
|---|---|---|---|---|---|
| Package | 84-PLCC (PLG84) | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 14K | 14K | 14K | 24K | 24K |
| Speed Grade | -3 | -3 | F variant | -3 | -1 (slower) |
| 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 |
主要差異化特點
- Same die, extended temperature option (對比A42MX09-3PLG84I)
- Cost-optimized density point (對比A42MX16-3PLG84)
- Non-volatile antifuse configuration (對比SRAM FPGAs (e.g., Xilinx XC4000-class))
設計說明
The A42MX09-3PLG84 operates from 3.3V/5V supplies on the MX 0.45um architecture. Decouple each VCC pin with 0.1uF ceramic plus a bulk 10uF capacitor. Antifuse FPGAs draw a static operating current with no inrush-related configuration surge (unlike SRAM FPGAs), simplifying power supply design, but verify current limits in the MX datasheet power tables for your logic utilization.
PLCC-84 J-lead packages tolerate slight coplanarity variation but should be reflow-soldered on a well-designed footprint; for socketed legacy retrofits, use a matched PLCC socket. Provide dedicated thermal vias or ground pour under the device. Because there is no exposed pad, thermal relief relies entirely on package convection - keep continuous power dissipation within datasheet limits.
Antifuse devices are ONE-TIME programmable: a design error cannot be fixed in the field. Always complete full functional simulation in Libero/Designer and reserve a bench-validation unit before committing production programming. Also note that all MX-family replacements (e.g., A42MX16 in the same PLG84 footprint) require recompilation and re-verification of pin assignments - the footprint matches but the bitstream does not transfer.
合規資訊
Compliance data not present in provided web data. PLCC-84 mature-process parts may be exempt from certain RoHS requirements (lead frames) - verify with Microchip product page.
