A42MX24-1PLG84I - 36K Gate MX FPGA, PLCC-84 | Microchip
MPN: A42MX24-1PLG84I ⚠ Lần mua cuốiA42MX24-1PLG84I Tóm tắt
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing configurable logic blocks and programmable interconnects that the designer wires together after manufacturing, sitting in the programmable-logic hierarchy between CPLDs and full ASICs. The MX family is specifically positioned as a single-chip ASIC alternative and a platform for consolidating legacy PLDs into one low-cost, high-volume device.
Key features include up to 2.5 kbits of configurable dual-port SRAM, fast wide-decode circuitry (D-modules arranged around the device periphery, providing CPLD-like wide-input AND functions), and up to 202 user-programmable I/O pins across the family (72 I/O in this package per distributor data). The 0.45um CMOS process and 5V-tolerant architecture make it well suited to legacy 5V system designs that modern FPGAs no longer support.
The antifuse-based MX architecture provides non-volatile, secure configuration that is live at power-up, eliminating the external configuration PROM required by SRAM FPGAs - an important reliability benefit in industrial and defense-adjacent systems.
Typical applications include legacy PLD consolidation, glueless bridge logic, industrial control, and mil-aerospace program sustainment where a proven, stable design must remain in production.
Design consideration: this device is in Last Time Buy status per distributor data (Microchip USA), with a 10-week manufacturer lead time - new designs should evaluate current Microchip FPGA families, while existing designs should secure lifetime quantities.
Bộ thay thế dễ dàng lắp đặt cho A42MX24-1PLG84I — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với A42MX24-1PLG84I (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, Family, RoHS Status, Speed Grade.
A42MX24-2PLG84I
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Xem tài liệu →A42MX24-3PLG84I
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Xem tài liệu →A42MX24-PLG84M
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Xem tài liệu →A42MX24-1PLG84I Tỷ lệ tối đa & tính chất điện
| System Gates | 36000 |
| Logic Cells / Logic Blocks | 912 |
| Family | MX (42MX) |
| Process Technology | 0.45 um CMOS |
| Điện áp cung cấp | 3V ~ 3.6V, 4.5V ~ 5.5V |
| I/O Count (this package) | 72 |
| Max User I/O (family) | 202 |
| Dual-Port SRAM | 2.5 kbits |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 84-LCC (J-Lead, PLCC-84) |
| Kiểu lắp đặt | Surface Mount |
| Logic Family | CMOS |
| Speed Grade | -1 |
| Trạng thái RoHS | ROHS3 Compliant |
| Packaging | Tray |
| Manufacturer Lead Time | 10 weeks |
| Product Status | Last Time Buy |
Hướng dẫn cấu hình chân A42MX24-1PLG84I 84-lcc (j-lead, plcc-84)
Cấu hình chân cho A42MX24-1PLG84I (84-lcc (j-lead, plcc-84) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho A42MX24-1PLG84I.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
A42MX24-1PLG84I phù hợp cho 6 Áp dụngs: Legacy PLD Consolidation, Industrial Control Systems, ASIC Prototyping and Bridge Logic, Mil/Aerospace Program Sustainment, Test and Measurement Equipment, Communication and Networking Line Cards.
Legacy PLD Consolidation
The MX family was explicitly built by Microchip as a platform for integrating legacy PLDs into a single, low-cost device. A42MX24's 36,000 gates and 912 logic cells absorb multiple PAL/GAL/22V10 devices plus glue logic, cutting board area and BOM count. Its antifuse configuration is live at power-up with no external boot PROM, matching the instant-on behavior of the PLDs it replaces. The dual 3.3V/5V supply support lets the consolidated logic interface directly with older 5V boards where modern 1.8V~3.3V FPGAs would need level translators.
Được đề xuất
Industrial Control Systems
With -40C to +85C industrial temperature rating and 5V-tolerant I/O, the A42MX24-1PLG84I fits factory automation controllers, motor-control sequencers, and sensor-interface boards that mix modern 3.3V logic with legacy 5V field signals. The 2.5 kbits of dual-port SRAM supports buffering between a host processor and real-time control logic. The fast wide-decode D-modules implement address decoding and chip-select functions with CPLD-like speed, and the antifuse fabric is immune to configuration upsets that can affect SRAM FPGAs in electrically noisy industrial environments.
Được đề xuất
ASIC Prototyping and Bridge Logic
Microchip positions MX as a reliable single-chip ASIC alternative, making the A42MX24 a natural fit for prototyping ASIC control blocks and implementing bus-bridge logic between incompatible interfaces. The 36K-gate capacity accommodates state machines, FIFOs (using the dual-port SRAM), and protocol adapters. During development, the wide-decode circuitry accelerates address comparison paths that dominate bridge designs. Because the MX antifuse device is one-time programmable, designers verify fully in simulation before programming production devices - the trade-off for the security and power-up determinism the family provides.
Được đề xuất
Mil/Aerospace Program Sustainment
Actel (now Microchip) MX FPGAs are widely deployed in defense and aerospace platforms, and the industrial-grade A42MX24-1PLG84I supports sustainment of those long-life programs. The antifuse technology offers resistance to configuration corruption and a design-security profile valued in defense applications, while instant-on configuration suits power-critical avionics. Program offices facing obsolescence of the PLCC-84 device typically lifetime-buy or qualify the same die in alternative packages (TQG176, PQG208) already present on XAIPART, preserving the design database while changing only the assembly footprint.
Được đề xuất
Test and Measurement Equipment
The A42MX24-1PLG84I serves as timing-control and interface logic in bench instruments, where its deterministic power-up (no configuration delay) and stable antifuse timing support repeatable measurements. The 912 logic cells implement trigger state machines and acquisition sequencers, while 2.5 kbits of dual-port SRAM provides small capture buffers. The PLCC-84 J-lead package is through-hole-repair friendly on the SMT lines used for low-volume instrument builds, and its -1 speed grade suits the moderate clock rates typical of instrument control logic.
Được đề xuất
Communication and Networking Line Cards
Legacy telecom and networking line cards built around 5V backplanes use the A42MX24-1PLG84I for frame formatting, address decoding, and control-plane glue logic. Its 5V-compatible I/O connects directly to backplane transceivers of that era, and the wide-decode D-modules implement slot-address comparison at wire speed. The dual-port SRAM implements small FIFOs for rate adaptation between line-side and system-side clocks. Boards in installed-base sustainment keep the MX device to avoid requalification, sourcing Last Time Buy stock while the 10-week lead time permits planned replenishment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho A42MX24-1PLG84I — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | A42MX24-2PLG84I | A42MX24-3PLG84I | A42MX24-TQG176M | A42MX36-2PQG208I |
|---|---|---|---|---|---|
| Package | 84-LCC (J-Lead, PLCC-84) | 84-LCC (PLCC-84) - same | 84-LCC (PLCC-84) - same | 176-TQFP (TQG176) - different | 208-PQFP (PQG208) - different |
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 36000 | 36000 | 36000 | 36000 | 54000 |
| Supply Voltage | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V | 3V~3.6V, 4.5V~5.5V |
| Lifecycle Status | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy | Last Time Buy |
Bảo phân biệt quan trọng
- Fastest verified drop-in speed grades available (vsA42MX24-2PLG84I / A42MX24-3PLG84I)
- Same die in multiple packages for footprint migration (vsA42MX24-TQG176M)
- Dual 3.3V/5V supply architecture (vsModern FPGAs (e.g., PolarFire))
Ghi chú thiết kế
The MX family supports either 3.3V (3V~3.6V) or 5V (4.5V~5.5V) core/IO operation - do not power mid-rail values like 4.0V. Follow the power-up guidance for A42MX24 added to datasheet DS2316 (SAR 42096), which defines acceptable rail sequencing to avoid latch-up at startup. Decouple both VCC and VCCI rails with 0.1uF ceramic capacitors at each supply pin pair plus bulk 10uF, per standard MX power supply recommendations in DS2316.
MX antifuse devices are one-time programmable - there is no bitstream update. Fully verify the design in Libero simulation and timing analysis before programming production units. Also confirm the speed grade when substituting: a -1 device cannot be reprogrammed to -2/-3 timing, and systems designed with -1 margins must not be assembled with a slower unverified substitute. Check the PLCC-84 pinout table in DS2316 rather than reusing pin assignments from other PLCC-84 FPGAs.
The 84-LCC J-lead package has leads on all four sides with ~1.27mm pitch. Use the JEDEC PLCC-84 footprint with no-clean or water-wash compatible paste; J-leads need slightly more solder volume than gull-wing parts. Keep unused I/O configured per the datasheet recommendation (inputs with weak pull-up or grounded outputs) to avoid floating-node noise. The industrial -40C to +85C rating removes thermal derating concerns for most industrial enclosures, but verify junction temperature with family power-estimation tools for dense designs.
The dual-port SRAM and wide-decode D-modules are the fastest paths on the die - keep associated routing short in Libero floorplanning and match board trace lengths for clock and decode outputs. Because MX is a 0.45um CMOS device with modest edge rates, signal-integrity measures are mild: series termination on long backplane lines and a solid ground plane generally suffice.
Thông tin tuân thủ
ROHS3 Compliant per Microchip USA product data. No AEC-Q100 automotive qualification data found for MX family.
