Freescale Semiconductor MC68882RC40A

The MC68882 implements the IEEE 754-1985 binary floating-point standard for Motorola M68000 systems. It is primarily designed for the MC68020 and MC68030 coprocessor interface, while other M68000-family processors can use it as a peripheral with appropriate system software. The device contains eight general-purpose floating-point data registers, control and status registers, conversion hardware and an arithmetic processing unit.

Distributor listings identify MC68882RC40A as a 68-pin PGA; the catalog label is 68-BCPGA. The package workbook registers 68-BCPGA at row 713 with image `/upload/package/68-BCPGA.jpg`, but that JPG is absent locally. A generic PGA outline is insufficient to prove the exact RC40A pin pattern, keying or board socket fit; use the NXP pin-out document and controlled mechanical drawing.

Mechanical checks

• Confirm pin-one location and PGA grid pattern.
• Compare socket and board footprint against the controlled drawing.
• Inspect pins and storage history for obsolete stock.

The registered local JPG is missing, so publication is blocked.

Use the manufacturer's MC68882 pin-out diagrams for every numbered connection. The groups below are functional guidance only.

Consult the official technical summary for electrical limits and mode-specific bus timing. Distributor descriptions do not replace the manufacturer specifications.

MC68881 is family-level pin and software compatible, but is not an unconditional speed or timing replacement. Confirm exact socket geometry, bus timing, software exception behavior, floating-point performance and lot qualification. Other MC68882 speed grades and PLCC variants require separate checks. No internal alternative link is included because no substitute was verified in the product database.

NXP preserves Motorola's MC68882 product page, Rev. 3 BR509 technical summary and separate pin-out diagrams. NXP marks the product no longer manufactured; the archived material is historical design evidence, not a current supply guarantee. Confirm the suffix-specific lot documents with the supplier.

Request traceability and original lot/date markings. Inspect PGA pins, package surfaces, storage conditions and evidence of re-marking or salvage. Qualify suspect or independent-market lots with electrical tests at the target clock rate and host interface timing.

Keep this record under manual review until suffix-specific 40 MHz timing, current distributor stock and tier price, package drawing and local JPG, pin condition and lot provenance are verified. The archived BR509 timing table does not by itself qualify RC40A at 40 MHz. Human review is required before publication.