Hello! now
tms@lcdchip.com
Motorola MC68882RC50A
- Part No.:
- MC68882RC50A
- Manufacturer:
- Motorola
- Category:
- Specialized ICs
- Package:
- 68-BCPGA
- Description:
- IC FLOATING-POINT CO-PROC 68PGA
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
MC68882RC50A - Floating-Point Coprocessor
MC68882RC50A is a Motorola MC68882-family floating-point coprocessor order code for legacy M68000 systems. The catalog identifies a 68-pin ceramic pin-grid-array package.
The MC68882 family is discontinued. Confirm the exact suffix, lot, package drawing and electrical timing before a service replacement.
Overview
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.
Key Advantages
Dedicated arithmetic
Offloads floating-point calculation and conversion from the integer host.
Software continuity
The manufacturer documents family-level MC68881 pin and software compatibility, subject to board and timing validation.
Extended precision
Eight 80-bit registers support intermediate calculations.
Host overlap
The coprocessor interface permits concurrent host and floating-point instruction execution.
Feature Summary
IEEE operation
Implements IEEE 754-1985 binary floating-point modes and exceptions.
Operand formats
Accepts integer, single-, double- and extended-precision real formats and packed decimal real data.
Function set
Provides arithmetic, conversion, trigonometric and transcendental instructions.
System bus
The family supports 8-, 16- or 32-bit data-bus integration with appropriate host design.
Package & Footprint
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.
- Compare pin grid, keying and pin-one orientation.
- Inspect the target socket and PGA leads.
- Confirm suffix and lot markings before installation.
Pin Functions
Use the manufacturer MC68882 pin-out diagrams for numbered pins. The following groups are functional guidance, not a substitute for the drawing.
Host bus
Address and data pins transfer operands and results.
Transfer control
Clock, select, strobe, size and acknowledge pins control bus cycles.
Reset and status
Follow the host interface requirements for reset and status signals.
Supply
Wire power, ground and reserved locations exactly as specified.
Key Specifications
| Exact catalog model | MC68882RC50A |
|---|---|
| Manufacturer | Motorola; archived by NXP |
| Function | Floating-point coprocessor |
| Host family | M68000; primarily MC68020 and MC68030 |
| Arithmetic | IEEE 754-1985 binary floating point |
| Data registers | Eight 80-bit floating-point registers |
| Arithmetic unit | 67-bit, family technical summary |
| Host data bus | 8, 16 or 32 bits by system design |
| Order-code speed | 50 MHz nominal listing; suffix timing unverified here |
| Package | 68-pin PGA; catalog label 68-BCPGA |
| Lifecycle | Discontinued manufacturer family |
Check the manufacturer technical summary and controlled suffix documentation for electrical limits, operating conditions and timing.
Replacement Considerations
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.
Manufacturer Information
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.
Applications
Legacy computers
Service of qualified M68000-family workstations.
Industrial systems
Maintenance of installed control equipment with floating-point workloads.
Instrumentation
Repair of established measurement and analysis platforms.
Embedded service
Exact-part replacement where the host software depends on the MC68882 interface.
Quality & Authenticity
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.
FAQ
Is MC68882RC50A a main CPU?
No. It is a floating-point coprocessor used with a compatible host.
Which hosts are primary?
MC68020 and MC68030 are the main coprocessor-interface targets in the manufacturer summary.
Is the 50 MHz timing verified by BR509?
No. Obtain suffix-specific evidence before timing qualification.
Is package artwork present?
No. The registered local 68-BCPGA JPG is missing.
Engineering Notice
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.
MC68882RC50A Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Motorola
- Series:
- -
- Package/Case:
- 68-BCPGA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Floating-Point Co-Processor
- Applications:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 68-PGA (26.92x26.92)
- Grade:
- -
- Qualification:
- -
- Include Parts
- Popular Search
The following parts include "MC68882RC50A" in Silicon Labs MC68882RC50A.
- Part Number
- Manufacturer
- Package
- Description
- CAP200DG-TL Power Integrations 8-SOIC (0.154", 3.90mm Width) IC AUTOMATIC DISCHARGE 8SO
- ATSHA204A-MAHDA-T Microchip Technology 8-UFDFN Exposed Pad IC AUTHENTICATION CHIP 8UDFN
- ATSHA204A-SSHDA-T Microchip Technology 8-SOIC (0.154", 3.90mm Width) IC AUTHENTICATION CHIP 8SOIC
- ATSHA204A-STUCZ-T Microchip Technology TO-236-3, SC-59, SOT-23-3 IC AUTHENTICATION CHIP SOT23-3
- ATECC608B-MAHDA-T Microchip Technology 8-UFDFN Exposed Pad IC AUTHENTICATION CHIP 8UDFN
- ATECC608B-MAHCZ-S Microchip Technology 8-UFDFN Exposed Pad IC AUTHENTICATION CHIP 8UDFN
- ATECC608B-SSHDA-T Microchip Technology 8-SOIC (0.154", 3.90mm Width) IC AUTHENTICATION CHIP 8SOIC
- ATECC608B-MAHDA-S Microchip Technology 8-UFDFN Exposed Pad IC AUTHENTICATION CHIP 8UDFN
- ATECC608A-MAHDA-S Microchip Technology 8-UFDFN Exposed Pad IC AUTHENTICATION CHIP 8UDFN
- ATECC608B-MAVDA-T Microchip Technology 8-UFDFN Exposed Pad IC AUTHENTICATION CHIP 8UDFN
The following parts are popular search parts in Test and Measurement.
Inventory:1,252
Please send an inquiry. Send us your inquiry, and we will respond immediately.
