A3P400-PQ208 - 400K Gate 1.5V FPGA | Microchip Technology
MPN： A3P400-PQ208 ✓ 啟用中A3P400-PQ208 概覽
An FPGA is a programmable semiconductor whose digital logic, interconnect, and I/O behavior are configured after manufacture. The A3P400 belongs to the ProASIC3 family, combining a nonvolatile flash configuration architecture with a CMOS logic fabric and programmable I/O. This device family is designed for designs that require more flexibility than a fixed-function microcontroller or programmable logic without moving to a larger, higher-cost FPGA platform.
Key characteristics include 400,000 system gates, 151 programmable I/O, 55,296 bits of RAM, 231 MHz operation, 1.5 V core voltage, and a 208-pin surface-mount PQFP package. The ProASIC3 architecture also supports single-chip implementation, reprogrammability, and mixed-voltage I/O operation. Its 208-pin package provides a substantial I/O count for legacy parallel buses, control logic, and multi-channel interfaces while remaining compatible with established board-layout practices.
The flash-based configuration memory makes the A3P400 suitable for systems that must retain a programmed design across power cycles without an external configuration PROM. Its SRAM resources can support data buffers, state machines, packet handling, and moderate parallel-processing tasks, while the programmable I/O supports connection to external memories, converters, transceivers, and industrial peripherals.
Typical applications include industrial automation and factory control, embedded communications equipment, instrumentation, data-acquisition systems, embedded networking, and control boards that require a high pin count. A design should verify voltage-bank assignments, interface standards, pin constraints, and configuration requirements before schematic capture. The manufacturer’s A3P400 product page and ProASIC3 family documentation should be used as the primary references for programming, package pinout, timing, and power-supply implementation.
This product summary combines the verified A3P400 family specifications, package information, and practical migration considerations for engineers evaluating the A3P400-PQ208 in embedded FPGA designs. It is intended to support early architecture decisions while leaving detailed implementation checks to the manufacturer datasheet and device programming tools.
直接替換替代品，適用於 A3P400-PQ208 — 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： A3P400-PQ208 （相同外形與佔位） — 差異在於 Core Supply Voltage, Package, RoHS Status, System Gates, Configuration Memory.
A3P400-PQ208I
✅ 直接替換聯絡詢價
查看資料表 →A3P400-PQG208
✅ 直接替換聯絡詢價
查看資料表 →A3P400-1PQG208I
✅ 直接替換聯絡詢價
查看資料表 →A3P400-2PQG208
✅ 直接替換聯絡詢價
查看資料表 →A3P400-PQ208 最大額定值與電氣特性
| Product Type | Flash-based FPGA |
| FPGA Family | ProASIC3 |
| System Gates | 400,000 gates |
| Programmable I/O | 151 I/O |
| Embedded RAM | 55,296 bits |
| Maximum Frequency | 231 MHz |
| Core Supply Voltage | 1.5 V nominal |
| Core Voltage Range | 1.425 V to 1.575 V |
| Logic Family | CMOS |
| Process Technology | 130 nm |
| Configuration Memory | Reprogrammable Flash |
| Package Type | 208-pin PQFP |
| 安裝類型 | Surface Mount |
| Package Pin Count | 208 pins |
| I/O Standards | Mixed-voltage operation |
| RoHS 狀態 | RoHS Compliant |
| Lead-Free Status | Lead Free |
A3P400-PQ208 208 pins 腳位配置指南
A3P400-PQ208（208 pins 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： A3P400-PQ208.
請參閱 資料表 以查看完整腳位配置。
典型應用
A3P400-PQ208 適用於 6 應用s: Industrial Automation Controllers, Embedded Communications Equipment, Data Acquisition and Instrumentation, Embedded Networking Gateways, Programmable Logic Control Boards, Test and Measurement Equipment.
Industrial Automation Controllers
The A3P400-PQ208 is well suited to industrial automation controllers that combine parallel I/O with programmable timing and control logic. Its 151 user I/O can connect discrete sensors, relay drivers, encoder interfaces, and operator-panel signals, while 400,000 system gates provide room for state machines, communication protocols, and supervisory logic. The 55,296 bits of RAM can support packet buffers, event histories, or intermediate data. For factory equipment, place the FPGA near the field interfaces to reduce control-loop latency, then assign I/O banks according to the required voltage standards. The industrial A3P400-PQ208I ordering variant should be considered when the ambient-temperature range exceeds that of the standard suffix.
推薦
Embedded Communications Equipment
A3P400-PQ208 can implement communications framing, protocol conversion, buffering, and supervisory logic in embedded network equipment. Its programmable I/O is useful for parallel buses and legacy interface levels, while the embedded RAM supports packet staging or dual-port buffering. The 231 MHz family specification provides substantial timing margin for synchronous logic when the selected speed grade and design constraints permit. Place the FPGA close to connector and transceiver circuitry, use controlled-length routing for sensitive interfaces, and isolate switching or high-current circuitry from timing-sensitive paths. Firmware-style configuration updates are possible because the ProASIC3 architecture stores the configuration in reprogrammable flash.
推薦
Data Acquisition and Instrumentation
The A3P400-PQ208 can coordinate parallel converters, sample control, channel multiplexing, and data formatting in a data-acquisition or instrumentation system. Its 151 I/O provide ample connections for multiple converter channels, clocks, triggers, status signals, and front-panel interfaces, while 400,000 system gates can support parallel datapaths and protocol logic. The 55,296 bits of RAM offer limited but useful local buffering when the design does not require a large external memory. Validate timing against the converter settling requirements, constrain acquisition clocks, and account for I/O skew. A converter’s analog bandwidth and sampling architecture remain separate from the FPGA’s digital processing capability.
推薦
Embedded Networking Gateways
A3P400-PQ208 is useful in protocol-conversion gateways where a system must translate between legacy parallel interfaces and modern serial or network links. The FPGA can implement framing, CRC generation, packet classification, buffering, and flow-control state machines while its I/O connects directly to board-level transceivers. Use the 1.425 V to 1.575 V core range for supply planning and assign each I/O bank to the voltage required by its external interface. For industrial gateways, choose the ordering suffix appropriate to the environmental range and validate EMC, isolation, and thermal performance at the enclosure level. The same nonvolatile configuration approach simplifies field updates when the logic design evolves.
推薦
Programmable Logic Control Boards
The A3P400-PQ208 provides a practical platform for custom logic-control boards where fixed-function devices do not offer enough parallel connectivity or configuration flexibility. Designers can implement timing-critical sequencers, motor and instrument control, bus arbitration, and signal conditioning in programmable logic. Its 208-pin PQFP package offers 151 user I/O, making it appropriate for boards with numerous discrete inputs and outputs. Keep clock and reset distribution deterministic, terminate unused inputs according to the device guidance, and assign only compatible voltage standards within each I/O bank. The flash-based ProASIC3 architecture also supports a single-chip implementation, reducing the need for a separate configuration device in designs that use supported configuration methods.
推薦
Test and Measurement Equipment
A3P400-PQ208 can serve as the programmable control and data-formatting engine in test and measurement equipment. Its logic resources support sequencers, limit-test tables, trigger logic, and interface adapters, while the large I/O count accommodates instrument control signals and parallel measurement buses. The embedded RAM can hold short working buffers or multichannel sample groups when external memory is unnecessary. Designers should separate analog input conditioning from digital routing, use low-skew clock distribution for precision triggering, and verify every I/O voltage against the selected bank assignment. For production test equipment, confirm the ordering grade against the instrument’s internal operating environment.
推薦
推薦產品摘要
工程參考資料，適用於 A3P400-PQ208 — 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 | A3P400-PQ208I | A3P400-PQG208 | A3P400-1PQG208 | A3P400-2PQG208 |
|---|---|---|---|---|---|
| Package | 208-pin PQFP | 208-pin PQFP | 208-pin PQFP | 208-pin PQFP | 208-pin PQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FPGA Family | ProASIC3 | ProASIC3 | ProASIC3 | ProASIC3 | ProASIC3 |
| System Gates | 400,000 gates | 400,000 gates | 400,000 gates | 400,000 gates | 400,000 gates |
| Programmable I/O | 151 I/O | 151 I/O | 151 I/O | 151 I/O | 151 I/O |
| Embedded RAM | 55,296 bits | 55,296 bits | 55,296 bits | 55,296 bits | 55,296 bits |
| Maximum Frequency | 231 MHz | 231 MHz | 231 MHz | 231 MHz | 231 MHz |
| Core Supply Voltage | 1.5 V nominal | 1.5 V nominal | 1.5 V nominal | 1.5 V nominal | 1.5 V nominal |
| Configuration Memory | Reprogrammable Flash | Reprogrammable Flash | Reprogrammable Flash | Reprogrammable Flash | Reprogrammable Flash |
| Ordering Grade | Standard A3P400-PQ208 grade | Industrial grade | A3P400-PQG208 ordering grade | -1 speed grade | -2 speed grade |
主要差異化特點
- Industrial-grade ordering option (對比A3P400-PQ208I)
- Exact same A3P400 family resource profile (對比A3P400-PQG208)
- Multiple speed-grade choices in the same family (對比A3P400-1PQG208)
- Second speed-grade migration path (對比A3P400-2PQG208)
設計說明
Plan the A3P400-PQ208 power tree around the 1.425 V to 1.575 V core range and assign every I/O bank a compatible supply. Place core and I/O decoupling capacitors at their associated pins, keep switching-regulator loops compact, and isolate noisy digital return paths from sensitive analog sections. Verify sequencing, startup, current limits, and voltage tolerances against the manufacturer’s electrical characteristics before releasing the layout.
Use the exact 208-pin PQFP package drawing and pin-assignment table throughout schematic capture and PCB layout. Route clocks with short, symmetric paths, avoid crossing them with high-speed I/O wherever possible, and provide continuous ground-plane connectivity under the device. Confirm exposed configuration, dedicated I/O, power, and programming pins against the package-specific documentation rather than a generic PQFP symbol.
Do not treat every device with the A3P400 family name as an automatic substitute. Compare the PQ208 and PQG208 ordering suffixes, speed grade, temperature grade, timing constraints, I/O standards, and configuration requirements. After a replacement, re-run synthesis and timing analysis because even a pin-compatible device can have different timing margins or grade-specific operating limits.
Create I/O-bank assignments from the electrical requirements of connected devices rather than assigning pins by convenience. Match voltage standards, observe input threshold and output-drive limits, and account for package-related skew in timing-sensitive buses or source-synchronous interfaces. Add series termination where the output impedance, trace length, and receiver require it, and validate the final interface with signal-integrity analysis.
合規資訊
RoHS-compliant and lead-free status is identified for the A3P400-PQG208 family documentation. No additional REACH, halogen-free, conflict-minerals, or automotive qualification statement is established for the exact target.
