Product Overview
Actel A1020B-PL84C ACT 1 Antifuse FPGA - 84-Pin PLCC, Marked 0617, Unused
Condition
Unused, removed from equipment that was never placed into service. The photographs show a single black PLCC package laser-marked with the Actel logo over A1020B and PL84C, with 0617 alongside, which reads as a date code, and a small square logo mark at the right of the top face. The J-lead pins on all four sides are bright and evenly formed, with no solder, flux residue or tinning visible. A fine hairline mark crosses the molded top surface where the light catches it. Against the millimeter ruler in the second photo the body measures approximately 30 mm square. The device has not been powered, read or programmed here, so its configuration state is not confirmed.
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Product Overview
The A1020B-PL84C is Actel's ACT 1 family field programmable gate array in an 84-pin plastic leaded chip carrier. ACT 1 devices use antifuse programmable logic, a non-volatile one-time-programmable structure that holds its configuration with no external boot memory and no load sequence at power-up. That made the family a fixture in embedded controllers, instrumentation and aerospace-grade hardware through the 1990s and 2000s, and it is why boards built around an A1020B still call for the same part today rather than an SRAM-based substitute. Actel was later acquired by Microsemi, so you will see this part cross-referenced under both names. The piece in these photos carries the full marking A1020B PL84C with the 0617 code, so the package, speed grade suffix and family are all legible before you buy. Programming state is not confirmed - read it with your ACT 1 programmer or verify against the datasheet before designing it in.
Key Features
- Manufacturer: Actel (later Microsemi)
- Part number: A1020B-PL84C, marked A1020B PL84C on the package
- Family: ACT 1 field programmable gate array
- Package: 84-pin PLCC, J-lead, approximately 30 mm square against the ruler
- Logic technology: antifuse, non-volatile, one-time programmable
- No external configuration memory or boot load required
- Date code marking: 0617
- Condition: unused, pulled from equipment never placed into service
- Programming state: not confirmed - verify before use
- Stock: one piece
Applications
- Repair technician restoring a 1990s or 2000s control board that expects an A1020B in an 84-pin PLCC socket
- Aerospace or defense maintenance shop stocking a spare for a legacy line-replaceable unit built on ACT 1 logic
- Hardware engineer keeping an obsolete instrument in service where a boot-load FPGA would change the power-up behavior
- Instructor or student studying antifuse FPGA architecture with a real ACT 1 device in hand
Frequently Asked Questions
What exactly is printed on the package?
The Actel logo, then A1020B on one line and PL84C on the next, with 0617 to the right and a small square logo mark further right. Both photographs show the marking straight on and at an angle.
Is this device programmed or blank?
Not confirmed. ACT 1 parts are antifuse, one-time programmable, so whatever configuration a device carries is permanent and cannot be erased. We have not read, powered or programmed this piece, so treat its state as unknown and check it with an ACT 1 programmer before you commit it to a build.
Why choose an antifuse FPGA over a modern SRAM part?
An antifuse device holds its logic without a configuration PROM and comes up live at power-on. If you are repairing a board whose timing and startup sequence were designed around that behavior, a modern reloadable FPGA is not a drop-in.
How big is the package?
It is an 84-pin PLCC with J-leads on all four sides. Against the millimeter ruler in the second photo the body measures approximately 30 mm square, so it suits a standard PLCC-84 socket or footprint.
What am I actually getting, and what am I taking on?
You are getting the single unused A1020B-PL84C shown in these photographs, pulled from equipment that never went into service, with clean unsoldered J-leads and legible markings. What you take on is the rest: we do not power, test or read devices, so function and programming state are yours to verify, and the photos are the spec for this piece. Shipping is a flat $8, free once your order passes $28, and orders leave our Idaho warehouse the same or next business day.
Antifuse logic is the rare kind that remembers without power - whatever was written into it stayed written, and no reset ever takes it back. Find out what this one is carrying, and the rest of its service life is yours to design.
