Freescale Semiconductor MC68882RC50A

The MC68882 provides hardware floating-point operations for Motorola M68000-family hosts, especially MC68020 and MC68030 systems using the coprocessor interface. Motorola's BR509 technical summary describes IEEE 754-1985 binary arithmetic, eight extended-precision data registers, conversion logic and an arithmetic unit. Other hosts require suitable peripheral hardware and software integration.

The catalog records MC68882RC50A as 68-BCPGA. A 68-pin PGA description is consistent with part-level listings, but a board socket must be checked against the manufacturer's MC68882 pin-out and controlled mechanical drawing. The package register already lists `/upload/package/68-BCPGA.jpg`; the JPG is absent from the local site, so the artwork is not verified.

Mechanical checks

• Compare pin grid, keying and pin-one orientation.
• Inspect the target socket and PGA leads.
• Confirm suffix and lot markings before installation.

Use the manufacturer MC68882 pin-out diagrams for numbered pins. The following groups are functional guidance, not a substitute for the drawing.

Check the manufacturer technical summary and controlled suffix documentation for electrical limits, operating conditions and timing.

The MC68881 is family-level pin and software compatible but not an unconditional performance or timing replacement. Other MC68882 suffixes may differ in grade, package or qualification. Verify socket geometry, bus timing, floating-point exceptions and firmware behavior. No unverified internal substitute link is included.

NXP archives Motorola's MC68882 product information, BR509 technical summary and MC68882 pin-out diagrams. NXP marks this family no longer manufactured. The archive is design evidence, not a claim of current production or lot provenance.

For discontinued components, request traceability and lot/date evidence. Inspect PGA leads, markings and storage history. Test suspect lots for arithmetic operation and host-interface timing in the intended board environment.

This record requires manual package and timing review. The local package JPG is missing, and the archived family summary does not establish RC50A-specific 50 MHz timing. Do not publish until the controlled drawing, artwork and target-system qualification have been checked.