A3P1000-FG256M - ProASIC3 Flash FPGA 1M Gates 256-FBGA | Microchip
MPN: A3P1000-FG256M ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $78.5 | $78.50 |
| 10 | $70.65 | $706.50 |
| 100 | $62.8 | $6,280.00 |
| 500 | $56.52 | $28,260.00 |
| 1,000 | $50.87 | $50,870.00 |
A3P1000-FG256M Overview
A flash-based FPGA is a field-programmable gate array that stores its configuration in on-chip non-volatile flash memory rather than an external configuration ROM. Within the programmable logic hierarchy - FPGA -> programmable logic device -> digital IC - flash FPGAs occupy a distinct niche: they power up instantly with no configuration time, offer a single-chip solution with higher design security than SRAM FPGAs, and remain reprogrammable in the field like their SRAM counterparts.
Key differentiating features of the A3P1000 include the third-generation VersaTile architecture, where each tile can be configured as a three-input LUT, a D-flip-flop with enable, or a latch - a capability unique to the Microchip ProASIC family. The fabric supports optional soft ARM support, live field upgrades, and abundant on-chip features with low total cost of ownership (TOC).
Technically, the ProASIC3 architecture uses a fine-grained, 100% flush-through routing fabric with four I/O banks on the A3P1000. Each bank has dedicated VCCIBx supplies, so only I/Os with compatible voltage standards can share a bank - enabling mixed-voltage designs supporting LVCMOS, LVTTL, PCI, and other single-ended and differential standards. Core operation at 1.5V keeps dynamic power low.
Typical applications include aerospace and defense systems, industrial automation, medical equipment, communications infrastructure, and high-reliability embedded control where instant-on operation, single-chip security, and long-lifecycle supply matter.
A key design consideration: pin assignments must respect I/O bank voltage compatibility; check the migration note that A3P1000, A3P600, and A3P400 each have four I/O banks when planning footprint reuse.
This page synthesizes distributor pricing, drop-in same-footprint alternatives, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for A3P1000-FG256M — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with A3P1000-FG256M (same form factor and footprint) — differing in Technology, Package, System Gates, Configuration Memory, Family.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
A3P1000-FGG256M
✅ Drop-In✓ In Stock
$27.85 / Unit
View Datasheet →A3P1000-2FG256M
✅ Drop-In✓ In Stock
$45.1 / Unit
View Datasheet →A3P1000-2FGG256M
✅ Drop-In✓ In Stock
$25.8 / Unit
View Datasheet →A3P1000-1FGG256M
✅ Drop-In✓ In Stock
$1 / Unit
View Datasheet →A3P1000-1FGG256T
✅ Drop-In✓ In Stock
$112.06 / Unit
View Datasheet →A3P1000-FG256YM
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000-FG256M Maximum Ratings & Electrical Characteristics
| Family | ProASIC3 |
| System Gates | 1000000 gates |
| VersaTiles (Logic Elements) | 24576 |
| User I/O | 177 |
| Configuration Memory | 147456 bits flash |
| Maximum System Performance | 231 MHz |
| Core Supply Voltage | 1.5 V |
| Technology | CMOS flash-based FPGA |
| Architecture | VersaTile (3-input LUT / D-flip-flop / latch) |
| I/O Banks | 4 |
| Soft Processor Support | Optional soft ARM support |
| Package | 256-LBGA (FBGA-256) |
| Mounting Type | Surface Mount |
| Programmability | In-system reprogrammable, non-volatile flash |
| Configuration | Single-chip, instant-on (no external boot ROM) |
A3P1000-FG256M 256-lbga (fbga-256) Pin Configuration Guide
Pin configuration for A3P1000-FG256M (256-lbga (fbga-256) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for A3P1000-FG256M.
Refer to the datasheet for full pin configuration.
Typical Applications
A3P1000-FG256M is suitable for 6 applications: Aerospace and Defense Systems, Industrial Automation and Control, Medical Equipment, Communications Infrastructure, Embedded Security and Secure Boot, Test and Measurement Instruments.
Aerospace and Defense Systems
The A3P1000-FG256M fits aerospace and defense payloads where instant-on, secure, single-chip configuration is mandatory. Its 1M-gate flash fabric with 24,576 VersaTiles implements glue logic, bus interfaces, and control sequencing without an external boot PROM, eliminating a common attack and failure point. The 1.5V core keeps dynamic power low in size-, weight-, and power-constrained avionics, while four I/O banks accept mixed-voltage legacy interfaces such as 3.3V and 2.5V signaling in one 256-FBGA footprint. Suppliers such as FPGAX explicitly support long-term supply and traceability for this part in defense programs, and military-temperature variants (for example A3P1000-FG256YM) share the same ball map, letting a single PCB layout serve commercial and mil-temp builds.
Recommended
Industrial Automation and Control
In factory automation, the A3P1000-FG256M consolidates PLC I/O interfacing, encoder decoding, and deterministic state-machine logic into one flash FPGA. Because configuration is stored on-chip, machines start instantly after power loss - no configuration reload delay that would stall a production line - and the 231 MHz fabric easily handles multi-axis pulse-train generation. Four VCCIBx banks let a single device bridge 5V-tolerant and 3.3V sensor domains while the 177 user I/Os replace dozens of discrete glue chips, cutting board area and BOM cost. In-system reprogrammability via JTAG and FlashPro allows field updates of control firmware on installed equipment, extending service life without hardware recalls.
Recommended
Medical Equipment
Diagnostic and monitoring instruments benefit from the A3P1000's deterministic, secure flash fabric. In patient-facing equipment, the absence of an external configuration memory removes a component that could be read out or corrupted, supporting data-integrity requirements, while instant-on operation ensures the device is functional the moment power is applied - important for portable diagnostic units. The 1M-gate capacity implements sensor front-end sequencing, filter acceleration, and interface bridging (USB, UART, SPI) between analog front-ends and host processors. Low 1.5V core power reduces thermal dissipation inside enclosed medical housings, and the long lifecycle typical of Microchip's mature ProASIC3 line matches the multi-year regulatory and service life of medical platforms.
Recommended
Communications Infrastructure
The A3P1000-FG256M serves as line-card glue logic in routers, switches, and baseband boards where a 231 MHz fabric handles framing, clock-domain crossing, and status aggregation. Its four I/O banks support mixed 1.8V/2.5V/3.3V signaling toward PHYs and backplane connectors in one package, and the 256-ball FBGA fits dense shelves. Unlike SRAM FPGAs, flash configuration means a power brown-out does not corrupt the bitstream - the card recovers instantly without supervisor-driven reconfiguration, improving carrier-class uptime. Where higher density is needed later, the documented migration path between A3P400/A3P600/A3P1000 with matching four-bank I/O structure eases redesigns within the same board architecture.
Recommended
Embedded Security and Secure Boot
Flash FPGAs are favored in secure designs because the bitstream never leaves the chip, avoiding the configuration-stream snooping attacks that threaten SRAM FPGAs at power-up. The A3P1000-FG256M implements encryption wrappers, secure key handling glue logic, and tamper-responsive sequencing around host processors. With 1M gates, designers can instantiate AES-style datapaths and bus firewalls between a main CPU and external memories. The single-chip, instant-on nature also shortens the trusted-boot window - the FPGA is functional from the first clock. Designers should still follow Microchip security guidance on JTAG lock and flash protection features available in the ProASIC3 generation, enabled via Libero SoC and FlashPro programming flows.
Recommended
Test and Measurement Instruments
Bench instruments and automated test equipment use the A3P1000-FG256M for trigger logic, timing generation, and instrument bus interfacing. The 24,576-tile fabric at up to 231 MHz generates precise multi-channel pulse patterns, while 177 user I/Os expose dense probe and relay-control lines from a single 256-FBGA device. Flash-based instant-on configuration means the instrument is ready when the power switch is pressed - no boot delay perceived by the operator - and field firmware updates through JTAG allow feature additions over the product lifetime. Low core power at 1.5V helps meet thermal budgets in fanless tabletop enclosures, and the four voltage banks adapt to legacy 5V and modern 3.3V interface standards on the same board.
Recommended
Recommended Products Summary
Engineering reference data for A3P1000-FG256M — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A3P1000-FGG256M | A3P1000-2FG256M | A3P1000-1FGG256T |
|---|---|---|---|---|
| Package | 256-FBGA (FG) | 256-FBGA (FGG, lead-free) | 256-FBGA (FG) | 256-FBGA (FGG, lead-free) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| System Gates | 1000000 gates | 1000000 gates | 1000000 gates | 1000000 gates |
| Speed Grade | Standard | Standard | -2 (faster) | -1 (slower) |
| User I/O | 177 | 177 | 177 | 177 |
| Core Supply Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Configuration Memory | 147456 bits flash | 147456 bits flash | 147456 bits flash | 147456 bits flash |
Key Differentiators
- Standard speed grade cost advantage (vs A3P1000-2FG256M)
- Lead-free compatibility decision (vs A3P1000-FGG256M)
- Military temperature availability on same footprint (vs A3P1000-FG256YM)
Design Notes
The 256-FBGA with fine pitch requires a controlled-impedance PCB with via-in-pad or dogbone fanout. Follow Microchip's ProASIC3 PCB layout guidelines: keep ball-map fanout symmetric to ease routing of the four VCCIBx bank rails, and place a decoupling network (multiple 0.1uF ceramics plus bulk capacitance) under the device on the opposite layer. Verify ball land pattern per the package drawing in the family datasheet before releasing the footprint.
The A3P1000 needs a 1.5V core rail plus separate VCCIBx rails for each of its four I/O banks. Because only I/Os with compatible voltage standards may share a bank (per the Microchip migration application note), define your I/O voltage plan before pin assignment in Libero SoC. Estimate: static and dynamic core current depends on toggle rates; run SmartPower in Libero to size the 1.5V regulator rather than guessing.
When migrating between A3P400, A3P600, and A3P1000 on shared footprints, remember all three have four I/O banks but bank boundaries and I/O counts differ - re-verify pin constraints and bank voltage assignments after migration. Also confirm the exact ordering code: suffix M (tray, commercial), T (tape-and-reel), I (industrial), Y (military) denote temperature/packaging, and FG versus FGG denote ball finish for RoHS assembly.
Compliance Information
FGG suffix denotes lead-free matte-tin ball packages in the ProASIC3 nomenclature; RoHS status of the FG (M) variant was not stated in the provided web data. Microchip also publishes a separate Automotive ProASIC3 datasheet for automotive-qualified members.
