A42MX16-3PLG84 - 24K Gate 5V FPGA, 84-PLCC | Microchip
MPN： A42MX16-3PLG84 ✓ 啟用中A42MX16-3PLG84 概覽
An FPGA is a field-programmable logic device that implements digital circuits through a fabric of configurable logic modules, flip-flops, and programmable interconnect. Unlike ASICs, FPGAs are programmed in the field, making them ideal for low-volume production, prototyping, and legacy system maintenance. The MX family from Microsemi (now Microchip) targets designers seeking a reliable, single-chip ASIC alternative, particularly for consolidating legacy PLD designs into a single low-cost, high-volume device.
Key features include the industry-proven 5.0V-tolerant architecture that simplifies integration into older 5V systems, dual 3.3V/5V supply operation, IEEE 1149.1 JTAG boundary scan support for board-level testing, and antifuse-based one-time programmability that delivers instant-on operation with no configuration PROM and high resistance to configuration corruption. The 84-PLCC J-lead package offers robust mechanical reliability and easy rework compared with fine-pitch BGAs.
Typical applications include industrial control systems, telecommunications and networking line cards, military and avionics legacy upgrades, test equipment, and glue-logic consolidation of multiple PLDs, bus interfaces, and state machines into one device. The 5V I/O tolerance makes this part especially attractive for maintaining existing 5V backplanes and equipment designs.
Design consideration: MX antifuse FPGAs are one-time programmable - verify logic thoroughly in simulation before programming, and plan a design flow in Microchip Libero SoC with proper constraint timing closure at the -3 speed grade.
直接替換替代品，適用於 A42MX16-3PLG84 — 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： A42MX16-3PLG84 （相同外形與佔位） — 差異在於 Package, Family, System Gates, Operating Temperature, Speed Grade.
A42MX16-2PLG84I
✅ 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-FPLG84
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-3PLG84 最大額定值與電氣特性
| Family | MX (42MX) |
| System Gates | 24,000 |
| Logic Cells | 608 |
| User I/O | 72 |
| Speed Grade | -3 |
| Internal Clock Frequency | 142 MHz |
| I/O Toggle Rate | 237 MHz |
| Core Voltage | 5 V |
| I/O Voltage Support | 3.3 V / 5 V |
| Process Technology | 0.45 um |
| Programmability | Antifuse (one-time programmable) |
| JTAG / Boundary Scan | IEEE 1149.1 compliant |
| 封裝 | 84-LCC (J-Lead, PLCC) |
| Package Dimensions | 29.3 x 29.3 x 4.4 mm |
| 安裝類型 | Surface Mount |
| Operating Temperature (commercial) | 0C to +70C |
| Operating Temperature (industrial, -I suffix) | -40C to +85C |
| RoHS 狀態 | Compliant (per Newark) |
A42MX16-3PLG84 腳位配置
| 腳位 1 | IO — User configurable I/O (see DS2316 for full 84-pin map) |
| 腳位 11 | VCC — 5V core/IO supply |
| 腳位 22 | GND — Ground |
| 腳位 30 | CLKA/H — Dedicated global clock input (chip) |
| 腳位 TCK | TCK — JTAG test clock (IEEE 1149.1) |
| 腳位 TDI | TDI — JTAG test data in |
| 腳位 TDO | TDO — JTAG test data out |
| 腳位 TMS | TMS — JTAG test mode select |
| 腳位 VPP | VPP — Programming voltage supply (antifuse programming) |
典型應用
A42MX16-3PLG84 適用於 6 應用s: Industrial Control Systems, Legacy PLD Consolidation, Military and Avionics Legacy Upgrades, Telecommunications Line Cards, Test and Measurement Equipment, Security and ASIC Prototyping.
Industrial Control Systems
The A42MX16-3PLG84's 5V-tolerant I/O and -40C to +85C capability (in -I variants) make it well suited to industrial PLC I/O modules, motor control interface logic, and factory floor equipment that still runs 5V signaling. Its 24K gates and 608 logic cells consolidate address decoders, state machines, and bus interfaces that previously occupied multiple PAL/GAL devices. The antifuse fabric is immune to configuration upsets from electrically noisy industrial environments, an advantage over SRAM FPGAs, and the PLCC J-lead package withstands vibration better than fine-pitch BGAs.
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Legacy PLD Consolidation
Microchip markets the MX family explicitly as a platform for integrating legacy PLDs into a single low-cost device. Boards carrying multiple 22V10s, GALs, or small CPLDs can migrate their combinational and sequential logic into the A42MX16's 608 cells, cutting BOM count and power while keeping the same 5V board environment. Because the device is one-time programmable and boots instantly with no external configuration memory, the consolidated design retains the deterministic power-up behavior of the original PLDs - important for safety interlocks and legacy replacement programs.
推薦
Military and Avionics Legacy Upgrades
Antifuse FPGAs from the Microsemi (now Microchip) line have a decades-long heritage in defense and avionics where configuration upsets from radiation and single-event effects matter. The A42MX16-3PLG84's instant-on, no-config-device operation and one-time programmability eliminate the SEU vulnerability of SRAM configuration memory. Designers upgrading legacy line-replaceable units can maintain the original 5V interfaces and PLCC sockets while refreshing obsolete PLD content, and Microchip's long-term lifecycle support protects multi-decade platform sustainment programs.
推薦
Telecommunications Line Cards
The 237 MHz I/O toggle rate and 142 MHz internal performance of the -3 speed grade support telecom backplane glue logic, framing logic, and multiplexing functions on legacy line cards. Dual 3.3V/5V I/O banks let one device bridge older 5V backplane signaling with newer 3.3V on-card logic, eliminating discrete level translators. IEEE 1149.1 JTAG boundary scan enables board-level production test of the dense interconnect typical of telecom shelf assemblies, and the 84-PLCC package supports the rework-friendly assembly flow used in card repair depots.
推薦
Test and Measurement Equipment
Bench instruments and automated test fixtures frequently need flexible timing, sequencing, and interface logic at moderate densities - a match for the A42MX16's 24K gates. The deterministic, instantly-on antifuse configuration ensures the instrument is functional the moment power is applied, without configuration download latency that could disturb measurement timing. Its 5V I/O compatibility connects directly to TTL-level test points and legacy instrument buses, and the -3 speed grade's 237 MHz toggle capability covers counter and pattern-generator roles in fixture designs.
推薦
Security and ASIC Prototyping
Microchip positions MX as a reliable single-chip ASIC alternative. Before committing to an ASIC mask set, designers can implement and validate the control logic in the A42MX16's antifuse fabric, whose one-time programming mimics the fixed, tamper-resistant character of a masked gate array - useful for secure designs where SRAM FPGA bitstreams are a liability. The 0.45 um process and 5V operation also emulate the electrical behavior of older gate-array nodes, giving more representative prototype timing than modern low-voltage FPGAs provide for legacy interface verification.
推薦
推薦產品摘要
工程參考資料，適用於 A42MX16-3PLG84 — 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 | A42MX16-2PLG84I | A42MX16-1PLG84 | A42MX16-3VQG100 |
|---|---|---|---|---|
| Package | 84-PLCC (J-Lead) | 84-PLCC (J-Lead) - same | 84-PLCC (J-Lead) - same | 100-VQFP - different |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24,000 | 24,000 | 24,000 | 24,000 |
| Speed Grade | -3 (fastest) | -2 | -1 | -3 |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C | 0C to +70C | 0C to +70C |
| Supply Voltage | 5V core, 3.3V/5V I/O | 5V core, 3.3V/5V I/O | 5V core, 3.3V/5V I/O | 5V core, 3.3V/5V I/O |
| Drop-in Compatible | - | Yes - same 84-PLCC pinout | Yes - same 84-PLCC pinout | No - package/footprint differ |
主要差異化特點
- 5V-tolerant architecture (對比Modern SRAM FPGAs (e.g., Artix-7, PolarFire))
- Faster speed grade in same pinout (對比A42MX16-1PLG84)
- Instant-on antifuse vs reprogrammability trade-off (對比A42MX16-3VQG100)
設計說明
The MX fabric operates at 5.0V with 3.3V/5V-selectable I/O banks. Provide a solid 5V rail with at least 0.1 uF decoupling per VCC pin plus bulk capacitance at the board level. The VPP pin (antifuse programming voltage) must be properly handled per the DS2316 programming specification during manufacturing; in normal operation follow the datasheet biasing. Do not hot-plug the VPP rail during functional operation.
Antifuse FPGAs are one-time programmable - there is no rework after programming. Complete full functional simulation and timing closure in Microchip Libero/Designer at the -3 speed grade before committing silicon. Also confirm you truly need the -3 grade; if your timing margin is generous, the -1 or -2 grades (e.g., A42MX16-1PLG84, A42MX16-2PLG84I) reduce cost, and the -2PLG84I adds industrial temperature range.
The 84-PLCC J-lead package (29.3 x 29.3 mm) requires a PLCC-84 land pattern per JEDEC outline; verify footprint versus socket choice - J-leads accommodate both solder-down and zero-insertion-force sockets, useful for prototype programming. Route global clock signals to the dedicated hard-wired clock pins rather than general I/O to use the low-skew clock network and meet 142 MHz internal timing.
合規資訊
Newark lists the A42MX16-3PLG84 as RoHS Compliant: Yes. REACH, halogen-free, and conflict-minerals status not stated in verified data.
