A42MX16-1PLG84 - 24K Gate FPGA, 84-PLCC | Microchip
MPN： A42MX16-1PLG84 ✓ 啟用中A42MX16-1PLG84 概覽
An FPGA (Field-Programmable Gate Array) is a semiconductor device containing configurable logic blocks and programmable interconnects that the designer wires together after manufacturing. Within the programmable logic hierarchy, the A42MX16 sits as a one-time-programmable antifuse FPGA - a subcategory of programmable logic devices alongside CPLDs and flash-based FPGAs - used to consolidate legacy PLD/CPLD logic into a single low-cost chip.
Key features include configurable dual-port SRAM up to 2.5 kbits, wide-decode circuitry, single-chip ASIC-alternative integration, and 5.0V-tolerant architecture suited to industrial legacy systems. The antifuse fabric is inherently non-volatile and secure: the configuration is permanently set at programming time, requires no configuration ROM, and resists readback - advantages over SRAM FPGAs such as the Xilinx XC4000 family.
Technically, the MX family uses a 0.45 um CMOS antifuse process with fine-grained combinational and sequential logic modules, supporting internal clock frequencies to 108 MHz (composite 119/198 MHz ratings per family data). Actel-style antifuse programming yields low static power and high design security.
Typical applications include legacy PLD consolidation, industrial control glue logic, aerospace/defense subsystems requiring configuration security, and bridge/sequencer functions in 5V systems.
Design tip: verify I/O bank assignments against the 84-PLCC pinout before PCB layout - antifuse FPGAs cannot be reprogrammed, so fix the pin map and simulate the design fully before programming. Note this part is a mature/lifecycle-limited product; confirm stock before committing to new designs.
直接替換替代品，適用於 A42MX16-1PLG84 — 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： A42MX16-1PLG84 （相同外形與佔位） — 差異在於 Package, Family, System Gates, Process Technology, Speed Grade.
A42MX16-1PLG84I
✅ 直接替換聯絡詢價
查看資料表 →A42MX16-1PLG84M
✅ 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 →A42MX16-1PLG84X39
✅ 直接替換📋 參考替代品（不在目錄中）
A42MX16-1PLG84MX39
✅ 直接替換📋 參考替代品（不在目錄中）
A42MX16-1PLG84 最大額定值與電氣特性
| System Gates | 24,000 |
| Logic Cells | 608 |
| Family | 42MX (MX FPGA) |
| Process Technology | 0.45 um CMOS antifuse |
| Internal Frequency | 108 MHz (family rated 119 MHz/198 MHz) |
| Package Type | 84-pin PLCC (PLG84), plastic LCC |
| Pins | 84 |
| User I/O (package) | 72 programmable I/O lines |
| Max User I/O (family) | 202 |
| Dual-Port SRAM | Up to 2.5 kbits configurable |
| Supply Voltage (core/IO) | 3.0 V to 3.6 V and 4.75 V to 5.25 V |
| Logic Family | CMOS |
| 工作溫度 | -40C to +85C |
| Programming Technology | One-time programmable antifuse |
| Configuration | Non-volatile, no external boot ROM required |
| 安裝類型 | Surface Mount |
A42MX16-1PLG84 腳位配置
| 腳位 1 | IO — User-programmable I/O (PLG84 assignments per DS2316 package table) |
| 腳位 11 | VDD — Core supply (3.0-3.6V) - verify exact pin map in DS2316 |
| 腳位 12 | GND — Ground |
| 腳位 20 | VDDI — I/O supply (4.75-5.25V) - verify exact pin map in DS2316 |
| 腳位 33 | CLK — Dedicated/global clock input |
| 腳位 44 | TDI — JTAG boundary-scan data in / programming input |
| 腳位 45 | TDO — JTAG boundary-scan data out |
| 腳位 46 | TMS — JTAG test mode select |
| 腳位 47 | TCK — JTAG test clock |
| 腳位 84 | IO — User-programmable I/O |
典型應用
A42MX16-1PLG84 適用於 6 應用s: Legacy PLD Consolidation, Industrial 5V Control Systems, Aerospace and Defense Subsystems, ASIC Prototyping and Bridge Logic, Test and Measurement Fixtures, Communications and Networking Glue Logic.
Legacy PLD Consolidation
The MX family is explicitly positioned by Microchip as a platform for integrating multiple legacy PLDs and CPLDs into a single low-cost 5V device. The A42MX16's 24,000 gates and 608 logic cells absorb several 22V10-class PLDs or small CPLDs at once, cutting board area, inventory SKUs, and assembly cost. Because the antifuse fabric is non-volatile, no configuration flash is needed - the consolidated design is simply programmed once and functions at power-up, preserving the deterministic behavior of the legacy logic it replaces.
推薦
Industrial 5V Control Systems
With dual 3.0-3.6V and 4.75-5.25V supply support and 5V-tolerant I/O, the A42MX16-1PLG84 drops directly into existing 5V industrial backplanes and motor-control boards that modern SRAM FPGAs cannot interface with without level shifters. The 72 available I/O on the 84-PLCC drives relays, sensors, and optocouplers at 5V logic levels, while -40C to +85C operation covers unconditioned factory environments. The 108 MHz internal frequency is ample for state machines, sequencers, and encoder-processing logic in these systems.
推薦
Aerospace and Defense Subsystems
Microsemi (now Microchip) antifuse FPGAs are traditional choices in defense and aerospace designs where configuration security matters: the antifuse bitstream cannot be read back, protecting design IP against extraction. The A42MX16-1PLG84M military-grade sibling supports extended temperature builds in the same 84-PLCC footprint. One-time programmability also eliminates the single-event configuration-upset failure mode of SRAM FPGAs in radiation environments, a key reliability argument for mission-critical glue logic and bus-interface functions.
推薦
ASIC Prototyping and Bridge Logic
The MX family serves as a single-chip ASIC alternative for mid-volume products where mask ASIC NRE is uneconomical. Designers implement address decoders, bus bridges, wait-state generators, and custom peripheral interfaces in the 24K-gate fabric, using up to 2.5 kbits of configurable dual-port SRAM for FIFOs and scratch buffers. The wide-decode circuitry accelerates address comparison logic. Compared to discrete glue-logic builds, a single A42MX16 replaces dozens of SSI/MSI packages, improving timing closure at up to 108 MHz internal clock rates.
推薦
Test and Measurement Fixtures
Production test fixtures and bench instruments benefit from the A42MX16's instant-on, no-boot behavior: programmed once, the device is active at power-up with no configuration delay, so test sequences start deterministically. The JTAG boundary-scan chain (TDI/TDO/TMS/TCK) supports board-level interconnect testing per the DS2316 datasheet, simplifying fixture self-test. The 5V I/O directly interfaces with legacy UUT test points, and the PLCC package can be socketed for reuse across fixture revisions without desoldering.
推薦
Communications and Networking Glue Logic
In legacy telecom and networking line cards, the A42MX16 implements framing logic, clock-domain crossing bridges, and interrupt controllers between processors and PHY devices. The dual-port SRAM supports small FIFOs for rate adaptation between 5V legacy backplanes and 3.3V peripheral ICs. Designers value the low static power of the antifuse fabric in always-on chassis equipment, and the one-time-programmed configuration avoids the configuration-corruption concerns of SRAM FPGAs in long-uptime carrier equipment.
推薦
推薦產品摘要
工程參考資料，適用於 A42MX16-1PLG84 — 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 | A42MX16-1PLG84I | A42MX16-1PLG84M | A42MX16-FPLG84 | A42MX16-1PQG100 |
|---|---|---|---|---|---|
| Package | 84-PLCC (PLG84) | 84-PLCC - same | 84-PLCC - same | 84-PLCC - same (green) | 100-PQFP - different |
| Brand | Microchip Technology (Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 24,000 | 24,000 | 24,000 | 24,000 | 24,000 |
| Logic Cells | 608 | 608 | 608 | 608 | 608 |
| Supply Voltage | 3.0-3.6V / 4.75-5.25V | 3.0-3.6V / 4.75-5.25V | 3.0-3.6V / 4.75-5.25V | 3.0-3.6V / 4.75-5.25V | 3.0-3.6V / 4.75-5.25V |
| Internal Frequency | 108 MHz | 108 MHz | 108 MHz | 108 MHz | 108 MHz |
| Drop-in Compatible | - | Yes | Yes | Yes | No (different package) |
主要差異化特點
- Non-volatile antifuse configuration with no boot ROM (對比XC4000-class SRAM FPGAs)
- Configuration security (對比SRAM FPGAs)
- 5V-tolerant dual-rail I/O (對比A42MX16-1PQG100)
設計說明
The 84-PLCC J-leaded package supports both solder mounting and low-cost PLCC sockets. If the design may need future die swaps (I vs M temperature grades), use a socket to allow field-grade changes. Follow the DS2316 mechanical drawing for land pattern dimensions; J-leads require allowance for lead spring during reflow.
The A42MX16 requires dual supplies: 3.0-3.6V (core, VDD) and 4.75-5.25V (I/O, VDDI). Sequence-free by design, but decouple both rails with 0.1uF ceramic caps per supply pin plus bulk 10uF per rail. Antifuse devices draw minimal static current, so rail sizing is dominated by dynamic I/O switching current.
This is a one-time-programmable antifuse FPGA: the design cannot be changed after programming. Complete full functional simulation, timing analysis, and pin-map verification in Libero SoC before programming. Reserve spare I/O on the 84-PLCC for ECO logic since the 72-I/O budget fills quickly in glue-logic consolidation projects.
合規資訊
Abacus Technologies lists EU RoHS/REACH compliance for this family, but per-date-code verification with Microchip is required. The A42MX16-FPLG84 'F' variant is the green/lead-free packaging option. Not AEC-Q100 qualified.
