Motorola MC68882CRC16A

The MC68882 extends the arithmetic capabilities of an M68000-family host with hardware floating-point operations and dedicated floating-point registers. Motorola describes direct coprocessor use with the MC68020 and MC68030 and peripheral-processor arrangements with other M68000-family systems.

The Motorola technical summary includes a pin-grid-array pin assignment. The LCDChip original package field is 68-BCPGA, a 68-position ceramic PGA catalog class. Confirm the exact CRC ordering entry, mechanical case and pin grid against controlled drawings and the actual supplied device.

Layout checks

• Use the PGA pin map, not the alternate leaded-carrier map.
• Confirm grid spacing, pin-one position and socket orientation.
• Inspect body and pins against the production lot.

The expected package JPG is not available on the production site; use the controlled package drawing for mechanical verification.

Motorola's MC68882 technical summary identifies these functional signal groups for the PGA configuration. The summary does not replace its coordinate-specific pin-assignment diagram.

Confirm pin coordinates, active levels, strapping and electrical timing in the original MC68882 document before routing or socket substitution.

The MC68882 technical summary includes a 16.67 MHz AC column, but its applicability to this exact CRC variant must be confirmed from controlled ordering and timing documents.

Motorola describes MC68882 family compatibility with the earlier MC68881 architecture, but this does not establish unconditional board-level interchange for every order code. Check exact PGA footprint, pin coordinates, host coprocessor protocol, clock grade, supply, thermal range and software exception behavior. No alternative catalog product is asserted as an exact drop-in replacement here.

The LCDChip product record names Motorola. NXP currently hosts the original Motorola MC68882 technical summary. Family documentation describes the architecture; the exact CRC ordering variant still requires independent package and timing confirmation.

For a legacy PGA part, verify the complete top marking, physical package, pin condition, traceability and functional behavior against original Motorola documentation. This catalog description does not establish the provenance or electrical condition of an individual unit.

Verify the exact order code, package drawing, PGA pin assignment, board voltage, bus strapping, clock/timing conditions and host software behavior before substitution. The production package reference JPG is missing and must not be used as evidence of mechanical compatibility.