A3P1000-FGG256I - 1M Gate ProASIC3 FPGA, 256-FBGA | Microchip
MPN: A3P1000-FGG256I ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $37.51 | $37.51 |
| 10 | $32.85 | $328.50 |
| 100 | $27.4 | $2,740.00 |
| 500 | $23.95 | $11,975.00 |
| 1,000 | $20.1 | $20,100.00 |
A3P1000-FGG256I Overview
An FPGA (Field Programmable Gate Array) is a programmable logic device that allows designers to implement custom digital circuits using configurable logic elements, programmable interconnect, and dedicated hardware blocks. FPGAs sit in the broader semiconductor taxonomy as programmable logic devices (PLDs), and are widely used as alternatives to ASICs for low-to-medium volume production. The ProASIC3 family, based on flash technology, offers instant-on behavior, low power consumption, and inherent security against bitstream interception, distinguishing it from SRAM-based FPGAs that require an external boot PROM.
Key features of the A3P1000-FGG256 include support for multiple I/O standards (LVCMOS, LVTTL, PCI), embedded SRAM organized as true dual-port and dual-clock blocks, 1.5Kbits of distributed SRAM, on-chip PLL clock management, and single-chip operation that eliminates external configuration memory. The flash cells are rated for over 100,000 program cycles and provide live-at-power-up functionality, removing the boot delay of SRAM FPGAs. The industrial grade variant supports an operating temperature range of -40C to +85C.
From an architectural perspective, the ProASIC3 uses a fine-grained VersaTile logic element composed of a 4-input LUT plus a dedicated D flip-flop, with dedicated carry chains for fast arithmetic and dedicated multiplier blocks for DSP operations. Routing is achieved through a four-tiered low-skew network, providing predictable timing closure. The embedded SRAM supports independent read and write ports, making it suitable for FIFO, dual-port buffer, and look-up-table implementations without consuming logic resources.
Typical applications include industrial control and factory equipment, motor control encoder interfaces, networking line cards, avionics subsystems, low-volume ASIC replacement, secure firmware hubs, and military or aerospace electronics that benefit from the radiation-tolerant characteristics of flash-based configuration memory. The 256-ball FBGA package suits designs requiring high I/O density and tight PCB layouts.
When designing with this part, ensure the PCB pad geometry follows the JEDEC 17 x 17 mm FBGA-256 mechanical outline with 1.0 mm ball pitch. Use Microchip Libero SoC Design Suite for synthesis, place-and-route, and bitstream generation. Decouple each VCC/VCCI supply with 0.1 uF plus 10 uF capacitors placed as close to the package balls as the layout allows, and provide a clean JTAG chain for in-system programming.
This page synthesizes real-time distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes that engineers need beyond what is printed in the manufacturer datasheet.
Drop-in alternatives for A3P1000-FGG256I — 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-FGG256I (same form factor and footprint) — differing in Number of Logic Elements, Package, System Gates.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
A3P1000-FGG256C
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000-FGG256II
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000-FGG256IY
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000L-FGG256I
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000-FG256I
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000L-FG256I
✅ Drop-In📋 Reference alternative (not in catalog)
A3P1000-FGG256I Maximum Ratings & Electrical Characteristics
| Family | ProASIC3 (A3P1000) |
| Logic Elements | 11,000 |
| System Gates | 1,000,000 |
| Embedded SRAM | 147,456 bits |
| Distributed SRAM | 1.5 Kbits |
| Maximum User I/O | 177 |
| Number of I/O Banks | 4 |
| Configuration Memory | Flash (non-volatile, live-at-power-up) |
| PLLs | Yes, on-chip |
| Package | 256-ball FBGA (FGG256), 1.0 mm pitch |
| Temperature Grade | Industrial (-40C to +85C) |
| Operating Temperature Range | -40C to +85C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes (per Microchip product page) |
A3P1000-FGG256I 256-ball fbga (fgg256), 1.0 mm pitch Pin Configuration Guide
Pin configuration for A3P1000-FGG256I (256-ball fbga (fgg256), 1.0 mm pitch 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-FGG256I.
Refer to the datasheet for full pin configuration.
Typical Applications
A3P1000-FGG256I is suitable for 7 applications: Industrial Motor Control, Networking Line Card Glue Logic, Low-Volume ASIC Replacement, Avionics Subsystems, Medical Imaging Front-End, Secure Firmware Hub, Test and Measurement Instrumentation.
Industrial Motor Control
The A3P1000-FGG256I is well suited for industrial motor control encoder interfaces and closed-loop servo drives, where its 11,000 logic elements handle PWM generation, quadrature decoding, and field-oriented control algorithms. Its 177 user I/Os in the 256-FBGA package comfortably support multi-axis systems (resolver feedback, Hall sensors, brake drivers) without external I/O expanders. Compared to discrete MCU plus CPLD solutions, the ProASIC3 reduces BOM and offers deterministic latency because the design is compiled into dedicated logic rather than running sequential firmware.
Recommended
Networking Line Card Glue Logic
In networking line cards and telecom equipment, the A3P1000-FGG256I provides high-density glue logic between switch ASICs, SERDES devices, and management controllers. Its flash-based configuration offers instant-on operation required by network processors that demand deterministic bring-up timing, with 147,456 bits of embedded SRAM used for packet buffering and statistics counters. The four I/O banks support multiple voltage standards (LVCMOS33/25/18, LVTTL, PCI) to bridge ASICs running at different supply rails.
Recommended
Low-Volume ASIC Replacement
The ProASIC3 family was designed specifically as a cost-effective ASIC replacement for volumes that cannot justify NRE charges for full mask sets. The A3P1000-FGG256I lets designers integrate up to 1M system gates in a single device, with on-chip flash configuration that protects IP and eliminates boot memory. Typical migration paths come from controllers, custom bus bridges, and proprietary protocol implementations where the time-to-market and unit-cost break-even favor programmable logic over an ASIC tape-out.
Recommended
Avionics Subsystems
Avionics subsystems benefit from the radiation-tolerant characteristics of flash-based configuration memory in the A3P1000-FGG256I, which is immune to radiation-induced configuration upset that affects SRAM-based FPGAs. The 256-FBGA package delivers 177 user I/Os for ARINC 429, MIL-STD-1553, and discrete interfaces commonly found in flight control and instrumentation equipment. The industrial temperature grade of -40C to +85C is well within pressurized avionics bay envelopes, and the long-term flash retention supports field life requirements of over 20 years.
Recommended
Medical Imaging Front-End
In medical imaging front-ends such as ultrasound beamformers and patient monitor signal acquisition, the A3P1000-FGG256I provides deterministic real-time DSP building blocks (multipliers, accumulators, embedded SRAM blocks) without the latency jitter of processor-based approaches. Its live-at-power-up behavior is valuable for medical safety standards where predictable startup timing is required. The 147 Kbits of true dual-port SRAM serve as sample-rate conversion buffers and beamformer delay lines directly in the FPGA fabric.
Recommended
Secure Firmware Hub
The non-volatile flash configuration of the A3P1000-FGG256I provides inherent security against external bitstream readback, which is critical for secure firmware hubs in payment terminals, secure access controllers, and hardware security modules. Compared to SRAM-based FPGAs whose bitstream can be intercepted at boot, the ProASIC3 stores the design internally, eliminating external boot-PROM attack surfaces. Embedded SRAM can also be partitioned to isolate security-sensitive state from general-purpose logic.
Recommended
Test and Measurement Instrumentation
Test and measurement instruments such as protocol analyzers, mixed-signal oscilloscopes, and logic analyzers leverage the A3P1000-FGG256I as a real-time acquisition and triggering engine. The 177 user I/Os support wide parallel buses into ADC/DAC converters, while embedded dual-port SRAM buffers sample streams to host interfaces. The four I/O banks permit mixed voltage interfacing (1.5V to 3.3V) to existing analog front-ends, simplifying PCB routing and avoiding level shifter arrays.
Recommended
Recommended Products Summary
Engineering reference data for A3P1000-FGG256I — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | A3P1000-FGG256C | A3P1000-FGG256II | A3P1000-FGG256IY | A3P1000L-FGG256I | A3P1000-FG256I | A3P1000L-FG256I |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 256-ball FBGA (FGG256), 1.0 mm pitch | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FGG256) - same | 256-ball FBGA (FG256) - same ball map | 256-ball FBGA (FG256) - same ball map |
| Logic Elements | 11,000 | 11,000 | 11,000 | 11,000 | 11,000 | 11,000 | 11,000 |
| Embedded SRAM | 147,456 bits | 147,456 bits | 147,456 bits | 147,456 bits | 147,456 bits | 147,456 bits | 147,456 bits |
| User I/O | 177 | 177 | 177 | 177 | 177 | 177 | 177 |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial extended screening | Industrial (Pb-free) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Power Profile | Standard | Standard | Standard | Standard | Low-power (~30% lower Icc static) | Standard | Low-power (~30% lower Icc static) |
Key Differentiators
- Flash-based live-at-power-up behavior (vs A3P1000L-FGG256I)
- Industrial temperature grade (vs A3P1000-FGG256C)
- Pin-compatible 256-FBGA footprint across the family (vs Cross-brand FPGAs (Xilinx Spartan-6, Lattice ECP5))
Design Notes
Use the JEDEC 17 x 17 mm body, 1.0 mm ball-pitch land pattern for the 256-FBGA package. NSMD (non-solder-mask defined) pads are recommended over SMD pads for improved solder joint reliability on BGA packages. Escape traces between balls should use 0.1 mm trace/space rules minimum; a 4-layer stackup with a dedicated GND layer directly below the BGA is recommended for signal integrity and thermal dissipation.
Estimated: The A3P1000-FGG256 I uses approximately 1.5 mA to 5 mA of static current at room temperature and 1.5 mA to 8 mA at -40C to +85C across all variants, plus dynamic current driven by switching activity. Place one 0.1 uF plus one 10 uF decoupling capacitor pair per VCC pin cluster on the package, positioned within 1 to 2 mm of the balls. VCCI supply pins for the four I/O banks each require their own decoupling pair, since mixing voltage standards on the same bank requires careful review of the ProASIC3 family datasheet bank-assignment table.
Estimated: A common pitfall is assuming SRAM-based FPGA design flows will work for ProASIC3. Unlike SRAM FPGAs that boot from an external PROM, the A3P1000 requires programming via JTAG or FlashPro hardware using Libero SoC-generated bitstreams. Live-at-power-up is automatic, but designers must remember that flash programming cycles are rated for approximately 100,000 cycles - more than sufficient for production, but unsuitable for run-time reconfiguration. Always set unused I/O pins to a defined state (pull-up or pull-down) per the ProASIC3 I/O bank configuration to minimize power and noise.
Use the ProASIC3 pin count and device routing features to map hardware interfaces. Estimated: For LVDS inputs, terminate the LVDS pair with a 100 ohm differential impedance trace routed symmetrically. For clock inputs, place the clock trace on an inner layer between GND planes to reduce EMI. Spread-spectrum clocking and synchronous I/O toggle rates above 100 MHz should be reviewed with timing analysis in Libero SoC before tape-out, since the FBGA-256 bond-wire and BGA stub lengths affect the achievable toggle rate.
Compliance Information
RoHS compliant per Microchip product page. Halogen-free finish on Pb-free variants. AEC-Q100 not applicable (FPGA, not automotive analog). Conflict-minerals declaration available from Microchip.
