A42MX16-2PLG84I - 24K Gate MX FPGA, 84-PLCC | Microchip
MPN： A42MX16-2PLG84I ✓ 啟用中A42MX16-2PLG84I 概覽
An FPGA (Field Programmable Gate Array) is a semiconductor device containing a fabric of configurable logic blocks and interconnects that the designer programs after manufacturing, sitting in the programmable-logic hierarchy between CPLDs and high-density SoC FPGAs. The Microchip (formerly Actel/Microsemi) MX family is a 5.0V-tolerant, antifuse-based one-time-programmable architecture, positioning it as a reliable single-chip ASIC alternative for integrating legacy PLD and glue-logic designs into a single low-cost device.
Key characteristics include dual voltage supply operation (3V to 3.6V core and 4.5V to 5.5V I/O ranges per device documentation), one-time programmable antifuse technology that retains configuration without external boot memory, and 72 dedicated user I/O pins. Because the configuration is hard-wired at programming, the device is immune to configuration readback attacks and does not require a configuration PROM, improving system reliability and board BOM cost.
The MX architecture combines efficient logic modules with dedicated routing resources, enabling designers to consolidate legacy PAL, GAL, and CPLD functions. As a mature high-volume platform, the A42MX16 is widely used in industrial control, aerospace/defense retrofits, telecommunications line cards, and medical equipment where design continuity matters more than leading-edge density.
Typical applications include legacy PLD consolidation, bus-interface bridge logic, industrial automation control panels, and radiation-tolerant heritage system sustenance where the antifuse fabric provides instant-on, secure configuration.
Design tip: because MX devices are one-time programmable, verify the design fully in simulation (Libero SoC tools) before programming; the -2 speed grade should be confirmed against your worst-case timing closure, or choose the faster -1 grade if timing margins are tight.
直接替換替代品，適用於 A42MX16-2PLG84I — 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： A42MX16-2PLG84I （相同外形與佔位） — 差異在於 Package, Family, System Gates, Logic Cells, RoHS Status.
A42MX16-1PLG84
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-FPLG84
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-PLG84I
✅ 直接替換📋 參考替代品（不在目錄中）
A42MX16-2PLG84C
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
A42MX09-PLG84
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
A42MX16-2PLG84I 最大額定值與電氣特性
| System Gates | 24000 |
| Family | MX FPGA |
| Number of I/O | 72 |
| Speed Grade | -2 |
| Supply Voltage (Core) | 3 V to 3.6 V |
| Supply Voltage (I/O) | 4.5 V to 5.5 V |
| 工作溫度 | -40C to +85C |
| Programmability | One-Time Programmable (antifuse) |
| 封裝 | 84-LCC (J-Lead / PLCC) |
| 安裝類型 | Surface Mount |
| Configuration Memory | Internal (no external boot PROM required) |
| RoHS 狀態 | Lead Free |
| Embedded Memory | None (logic only, MX16 fabric) |
| Development Software | Microchip Libero SoC |
A42MX16-2PLG84I 腳位配置
| 腳位 1 | IO — User input/output (bank assignment per datasheet) |
| 腳位 12 | VCC — Core supply (3V-3.6V) |
| 腳位 22 | GND — Ground |
| 腳位 26 | VPP — Programming voltage supply pin |
| 腳位 33 | CLKA — Dedicated global clock input |
| 腳位 42 | CLKB — Dedicated global clock input |
| 腳位 55 | IO — User input/output |
| 腳位 63 | RESET — Dedicated system reset input |
| 腳位 72 | IO — User input/output |
| 腳位 84 | GND — Ground |
典型應用
A42MX16-2PLG84I 適用於 6 應用s: Legacy PLD Consolidation, Industrial Automation Control, Aerospace and Defense Heritage Systems, Telecommunications Line Cards, Medical Equipment Sustenance, Secure Embedded Controllers.
Legacy PLD Consolidation
The MX family is explicitly designed as a single-chip ASIC alternative for integrating legacy PAL, GAL, and CPLD devices. The A42MX16-2PLG84I provides 24,000 system gates and 72 user I/O in a 5.0V-tolerant architecture, allowing multiple discrete 20- and 24-pin PLDs to be absorbed into one 84-PLCC device. Because its antifuse configuration is permanent and requires no boot PROM, the consolidated design retains instant-on behavior identical to the original PLDs while cutting BOM count, board area, and inventory SKUs, which is decisive when sustaining legacy industrial and telecom platforms.
推薦
Industrial Automation Control
In factory automation panels and PLC I/O cards, the A42MX16-2PLG84I fits because its industrial rating of -40C to +85C covers full industrial ambient range, and the 4.5V-5.5V tolerant I/O supply interfaces directly with 5V TTL field logic common on installed equipment. The 24K-gate fabric implements bus arbitration, encoder decoding, and interlock logic with deterministic, glitch-free antifuse routing. One-time programming eliminates configuration corruption risks from power glitches, a common field failure in SRAM FPGA industrial boards, improving mean time between failures in continuously operating machinery.
推薦
Aerospace and Defense Heritage Systems
Aerospace and defense sustainment programs frequently need to reproduce discontinued logic boards. The A42MX16-2PLG84I supports this because the antifuse fabric has no configuration readback path, providing inherent protection against reverse engineering, and its one-time-programmed nets are immune to SEU-induced configuration upset compared with SRAM FPGAs. The 84-PLCC J-lead package is mechanically robust and available in industrial grade, matching heritage board formats. Design teams can re-author legacy netlists in Libero SoC and reprogram identical footprints to extend platform service life.
推薦
Telecommunications Line Cards
Telecom line-card designs use the A42MX16-2PLG84I for framing glue logic, backplane interface bridging, and timing distribution. The 5.0V-tolerant MX architecture connects directly to legacy TTL-level backplanes such as 5V VME and H.110 derivative hardware without level shifters, saving board area and cost. Its deterministic antifuse delays support predictable setup/hold timing against backplane clocks, and the -2 speed grade suits moderate clock rates typical of legacy line cards. The one-time-programmed configuration also eliminates boot-time configuration loading on the shared backplane.
推薦
Medical Equipment Sustenance
Medical imaging and monitoring platforms built in the 1990s and 2000s rely on 5V FPGA logic for interface and control. The A42MX16-2PLG84I sustains these designs because Microchip maintains the MX family for long-lifecycle platforms, giving repair organizations a valid source for replacement logic. Its antifuse programming means a stocked spare is always ready with no configuration media, and the industrial temperature range covers equipment thermal envelopes. Hospitals and service depots can reproduce the original PLG84 footprint without PCB redesign, keeping certification documentation intact.
推薦
Secure Embedded Controllers
Applications requiring design IP protection choose the A42MX16-2PLG84I because antifuse one-time programming provides no mechanism to read back the programmed netlist, unlike SRAM FPGAs whose bitstreams can be intercepted. Once programmed, the configuration also needs no external boot flash, removing the most common attack and reliability surface. The 24K-gate capacity implements state machines, authentication glue logic, and tamper-response circuits, while the dual-rail supply supports mixed 5V I/O with a lower-voltage core for reduced power in always-on secure enclosures.
推薦
推薦產品摘要
工程參考資料，適用於 A42MX16-2PLG84I — 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 | A42MX16-1PLG84 | A42MX16-FPLG84 | A42MX16-2PLG84C | A42MX09-PLG84 |
|---|---|---|---|---|---|
| Package | 84-LCC (PLCC, J-Lead) | 84-LCC (PLCC) - same | 84-LCC (PLCC) - same | 84-LCC (PLCC) - same | 84-LCC (PLCC) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24000 | 24000 | 24000 | 24000 | 9000 |
| Architecture | Antifuse OTP, 5.0V tolerant | Antifuse OTP - same | Antifuse OTP - same | Antifuse OTP - same | Antifuse OTP - same |
| External Boot Memory Required | No | No | No | No | No |
主要差異化特點
- Industrial temperature grade (對比A42MX16-2PLG84C)
- Same die, lower speed grade economics (對比A42MX16-1PLG84)
- No external configuration memory needed (對比SRAM FPGAs)
設計說明
MX antifuse devices are one-time programmable. Complete full functional simulation and static timing analysis in Microchip Libero SoC before committing the device to programming; a programming error or late timing violation means the physical part must be scrapped. Verify the -2 speed grade meets your worst-case timing corner, or select the -1 grade for margin. Also confirm VPP programming supply availability on your programming hardware fixture.
The device operates from a core supply (3V-3.6V per device documentation) with 5V-tolerant I/O operation. Provide solid decoupling: at least 0.1uF ceramic per supply pin pair plus 10uF bulk per rail. Because antifuse fabrics draw low static current, power budgeting is dominated by dynamic switching; reduce simultaneous switching on the 72 I/O or add series termination on heavy bus loads to limit ground bounce on the PLCC leadframe, which has higher inductance than QFN packages.
The 84-PLCC J-lead package supports both socketed and direct SMD mounting. For new designs, solder directly to the PCB and pour ground plane under the device to reduce leadframe inductance effects on signal integrity. If a socket is required for field programming, choose a zero-insertion-force PLCC socket rated for the industrial temperature range and account for the additional 1-2pF per pin loading in timing analysis.
合規資訊
Distributor listings (PCB Electronics, Datasheet Directory) explicitly mark the part as LEAD FREE. REACH and halogen-free status not stated in provided data.
