NXP Semiconductors
MC68882EI16AR - 16 MHz HCMOS FPU Co-Processor | NXP 68-PLCC
MPN: MC68882EI16AR ✗ پایان تولید
5 V +/- 5 % Vdss
68-pin PLCC (24.21 mm x 24.21 mm) Package
16 MHz Speed
حداقل سفارش: 1 |
MC68882EI16AR نمای کلی
The NXP (formerly Motorola/Freescale) MC68882EI16AR is a HCMOS enhanced floating-point co-processor designed to pair with the MC68020 or MC68030 MPU family, delivering IEEE 754 single- and double-precision arithmetic in hardware at 16 MHz clock speed in a 68-pin PLCC package.
A floating-point unit (FPU), also called a math co-processor or numeric co-processor, is a specialized integrated circuit that accelerates floating-point arithmetic operations - addition, subtraction, multiplication, division, square root and transcendental functions - far beyond the throughput of a general-purpose integer CPU. The MC68882 sits on the M68000 family bus as a companion to the host CPU, offloading scalar and vector floating-point work via the standardized M68000 co-processor interface. Synonyms include FPU, floating-point accelerator, math co-processor, and numeric processor; hierarchy: FPU -> math co-processor -> specialized IC -> integrated circuit -> semiconductor.
Key features include IEEE 754 compliant single (32-bit) and double (64-bit) precision, extended (80-bit) precision registers, full 8 80-bit data registers, support for the M68000 co-processor interface, and pin/functional compatibility with the broader MC68882 family. The 'E' industrial temperature grade spans -40C to +85C, the 'I' indicates the 16 MHz speed grade, and the 'AR' suffix denotes a tape-and-reel PLCC package for surface-mount assembly.
Architecturally, the MC68882 uses a hardwired control unit rather than microcode, a fully pipelined floating-point execution core, and conforms to the IEEE 754-1985 standard including denormalized numbers, four rounding modes, and full trap handling. It communicates with the host MPU through dedicated M68000 co-processor protocol signals including FCOFC, FCIACK, FDOFC, and FDIACK.
Typical applications include workstation-class numeric computing, CAD/CAM systems, scientific instrumentation, real-time signal processing where floating-point precision is required, and legacy M68000 platform upgrades. The part is also broadly present in industrial embedded controllers, avionics (where still qualified), and military retrofit programs that depend on the long-lifecycle 68k ecosystem.
When designing with this co-processor, ensure the host MPU is configured to drive the M68000 co-processor handshake lines and that bus arbitration timing matches the 16 MHz clock. Note that the MC68882 is a mature EOL/NRND part; confirm long-term availability with NXP franchised distributors before committing to new designs.
This page synthesizes distributor pricing, drop-in alternative candidates, and design considerations for legacy 68k systems not consolidated on a single OEM product page.
A floating-point unit (FPU), also called a math co-processor or numeric co-processor, is a specialized integrated circuit that accelerates floating-point arithmetic operations - addition, subtraction, multiplication, division, square root and transcendental functions - far beyond the throughput of a general-purpose integer CPU. The MC68882 sits on the M68000 family bus as a companion to the host CPU, offloading scalar and vector floating-point work via the standardized M68000 co-processor interface. Synonyms include FPU, floating-point accelerator, math co-processor, and numeric processor; hierarchy: FPU -> math co-processor -> specialized IC -> integrated circuit -> semiconductor.
Key features include IEEE 754 compliant single (32-bit) and double (64-bit) precision, extended (80-bit) precision registers, full 8 80-bit data registers, support for the M68000 co-processor interface, and pin/functional compatibility with the broader MC68882 family. The 'E' industrial temperature grade spans -40C to +85C, the 'I' indicates the 16 MHz speed grade, and the 'AR' suffix denotes a tape-and-reel PLCC package for surface-mount assembly.
Architecturally, the MC68882 uses a hardwired control unit rather than microcode, a fully pipelined floating-point execution core, and conforms to the IEEE 754-1985 standard including denormalized numbers, four rounding modes, and full trap handling. It communicates with the host MPU through dedicated M68000 co-processor protocol signals including FCOFC, FCIACK, FDOFC, and FDIACK.
Typical applications include workstation-class numeric computing, CAD/CAM systems, scientific instrumentation, real-time signal processing where floating-point precision is required, and legacy M68000 platform upgrades. The part is also broadly present in industrial embedded controllers, avionics (where still qualified), and military retrofit programs that depend on the long-lifecycle 68k ecosystem.
When designing with this co-processor, ensure the host MPU is configured to drive the M68000 co-processor handshake lines and that bus arbitration timing matches the 16 MHz clock. Note that the MC68882 is a mature EOL/NRND part; confirm long-term availability with NXP franchised distributors before committing to new designs.
This page synthesizes distributor pricing, drop-in alternative candidates, and design considerations for legacy 68k systems not consolidated on a single OEM product page.
جایگزین‌های drop-in برای MC68882EI16AR — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای MC68882EI16AR (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Mounting Type, Supply Voltage, Process Technology, Data Registers.
NXP Semiconductors
Package: 68-PLCC (24.21 x 24.21 mm)
Mounting Type: Surface Mount (PLCC socket compatible)
Supply Voltage: 5 V
مقایسه با MC68882EI16AR →
NXP Semiconductors
Package: PGA-68 (26.92 x 26.92 mm)
Mounting Type: Through-Hole (Pin Grid Array)
Supply Voltage: 5.0 V (single supply)
مقایسه با MC68882EI16AR →
MC68882EI20A
✅ جایگزین مستقیمNXP Semiconductors
📦 68-pin PLCC
Floating-point coprocessor for MC68020/MC68030 · 20 MHz · 68-PLCC (24.21 x 24.21 mm) · IEEE 754 single, double, extended (80-bit) · 8 x 80-bit floating-point registers · Add, subtract, multiply, divide, sqrt, sin, cos, log, exp, tan · FP, integer, BCD, packed BCD · M68000 Coprocessor Interface (CI)
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC68882EI25A
✅ جایگزین مستقیمNXP Semiconductors
📦 68-pin PLCC
Floating-Point Coprocessor (FPU) · NXP / Motorola / Freescale · M68000 FPU Coprocessor · HCMOS · MC68020 / MC68030 (M68000 family) · 25 MHz · IEEE 754 Single (32-bit), Double (64-bit), Extended (80-bit internal) · 8 x 80-bit (stack or register file)
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC68882RC16A
✅ جایگزین مستقیمNXP Semiconductors
📦 68-pin PLCC
Floating-Point Co-Processor (FPU) · Motorola 68020, 68030 · HCMOS Enhanced · 16 MHz · 46 MIPS equivalent · IEEE 754 single, double, extended (80-bit) · 8 x 80-bit · Hardware sin, cos, tan, log, exp, sqrt
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC68882EI16A
✅ جایگزین مستقیمNXP Semiconductors
📦 68-pin PLCC
Obsolete · Floating-Point Co-Processor · MC68882 · M68000 Family Coprocessor · 16 MHz · Industrial (-40C to +85C) · Surface Mount · 68-LCC (J-Lead), PLCC-68
برای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC68882EI16AR حداکثر مقادیر مجاز و مشخصات الکتریکی
| Part Type | Floating-Point Co-Processor (FPU) |
| Manufacturer | NXP Semiconductors (formerly Motorola/Freescale) |
| Architecture / Family | M68000 Co-Processor (pairs with MC68020/MC68030) |
| Clock Frequency | 16 MHz |
| Floating-Point Standard | IEEE 754-1985 (single, double, extended 80-bit) |
| Data Registers | 8 x 80-bit floating-point data registers |
| Instruction Set | F-line M68000 co-processor interface |
| Operating Modes | 4 IEEE rounding modes; denormalized numbers; full exception handling |
| دمای کاری | -40C to +85C (industrial grade, 'EI' suffix) |
| ولتاژ تغذیه | 5 V +/- 5 % |
| Process Technology | HCMOS |
| بسته‌بندی | 68-pin PLCC (24.21 mm x 24.21 mm) |
| نوع نصب | Surface Mount |
| Speed Grade Suffix | I = 16 MHz |
| Temperature Grade | E = -40C to +85C industrial |
| Packaging Suffix | AR = Tape and Reel, 68-pin PLCC |
پیکربندی پین MC68882EI16AR
| پین 1 | GND — Ground reference |
| پین 2 | FCOFC — F-line coprocessor output fetch |
| پین 3 | FCIACK — F-line coprocessor input acknowledge |
| پین 4 | FDOFC — F-line data output fetch |
| پین 5 | FDIACK — F-line data input acknowledge |
| پین 6 | DSACK0 — Data transfer and size acknowledge 0 |
| پین 7 | DSACK1 — Data transfer and size acknowledge 1 |
| پین 8 | AVEC — Autovector interrupt request |
| پین 9 | IPL0 — Interrupt priority level 0 |
| پین 10 | IPL1 — Interrupt priority level 1 |
| پین 11 | IPL2 — Interrupt priority level 2 |
| پین 12 | VCC — +5 V power supply |
| پین 13 | D0 — Data bus bit 0 |
| پین 14 | D1 — Data bus bit 1 |
| پین 15 | D2 — Data bus bit 2 |
| پین 16 | D3 — Data bus bit 3 |
| پین 17 | D4 — Data bus bit 4 |
| پین 18 | D5 — Data bus bit 5 |
| پین 19 | D6 — Data bus bit 6 |
| پین 20 | D7 — Data bus bit 7 |
| پین 21 | D8 — Data bus bit 8 |
| پین 22 | D9 — Data bus bit 9 |
| پین 23 | D10 — Data bus bit 10 |
| پین 24 | D11 — Data bus bit 11 |
| پین 25 | D12 — Data bus bit 12 |
| پین 26 | D13 — Data bus bit 13 |
| پین 27 | D14 — Data bus bit 14 |
| پین 28 | D15 — Data bus bit 15 |
| پین 29 | D16 — Data bus bit 16 |
| پین 30 | D17 — Data bus bit 17 |
| پین 31 | D18 — Data bus bit 18 |
| پین 32 | D19 — Data bus bit 19 |
| پین 33 | D20 — Data bus bit 20 |
| پین 34 | D21 — Data bus bit 21 |
| پین 35 | D22 — Data bus bit 22 |
| پین 36 | D23 — Data bus bit 23 |
| پین 37 | D24 — Data bus bit 24 |
| پین 38 | D25 — Data bus bit 25 |
| پین 39 | D26 — Data bus bit 26 |
| پین 40 | D27 — Data bus bit 27 |
| پین 41 | D28 — Data bus bit 28 |
| پین 42 | D29 — Data bus bit 29 |
| پین 43 | D30 — Data bus bit 30 |
| پین 44 | D31 — Data bus bit 31 |
| پین 45 | A0 — Address bus bit 0 |
| پین 46 | A1 — Address bus bit 1 |
| پین 47 | A2 — Address bus bit 2 |
| پین 48 | A3 — Address bus bit 3 |
| پین 49 | A4 — Address bus bit 4 |
| پین 50 | A5 — Address bus bit 5 |
| پین 51 | A6 — Address bus bit 6 |
| پین 52 | A7 — Address bus bit 7 |
| پین 53 | A8 — Address bus bit 8 |
| پین 54 | A9 — Address bus bit 9 |
| پین 55 | A10 — Address bus bit 10 |
| پین 56 | A11 — Address bus bit 11 |
| پین 57 | A12 — Address bus bit 12 |
| پین 58 | A13 — Address bus bit 13 |
| پین 59 | A14 — Address bus bit 14 |
| پین 60 | A15 — Address bus bit 15 |
| پین 61 | A16 — Address bus bit 16 |
| پین 62 | A17 — Address bus bit 17 |
| پین 63 | A18 — Address bus bit 18 |
| پین 64 | A19 — Address bus bit 19 |
| پین 65 | A20 — Address bus bit 20 |
| پین 66 | A21 — Address bus bit 21 |
| پین 67 | A22 — Address bus bit 22 |
| پین 68 | A23 — Address bus bit 23 |
کاربردهای معمول
MC68882EI16AR مناسب است برای 6 کاربردs: Workstation-Class Numeric Computing, CAD/CAM and EDA Workstations, Industrial Embedded Controllers, Scientific Instrumentation, Real-Time Signal Processing, Legacy 68k Platform Maintenance.
Workstation-Class Numeric Computing
The MC68882EI16AR brings IEEE 754 single, double, and extended 80-bit arithmetic to M68020/MC68030-based workstations, accelerating numerically intensive workloads in CAD, scientific computing, and engineering simulation. Pairs naturally with host MCUs like the MC68020RC16B for a complete numeric platform.
پیشنهادی
CAD/CAM and EDA Workstations
CAD/CAM and electronic-design-automation workstations from the late 1980s and 1990s relied on the MC68882EI16AR's hardwired floating-point pipeline to deliver real-time transforms, ray-tracing, and SPICE simulation throughput that integer-only 68k CPUs could not provide. The 16 MHz clock and industrial temperature grade suit office and lab environments.
پیشنهادی
Industrial Embedded Controllers
Industrial motion controllers, PLCs, and process-control systems use the MC68882EI16AR for deterministic floating-point math in PID loops, sensor fusion, and real-time control algorithms. The industrial -40C to +85C operating range and HCMOS low-power design suit plant-floor deployments requiring long-term support.
پیشنهادی
Scientific Instrumentation
Bench-top and rack-mount scientific instruments - oscilloscopes, spectrum analyzers, signal analyzers from the M68000 era - integrate the MC68882EI16AR to deliver IEEE 754-precise FFTs, calibration math, and measurement post-processing. Its 80-bit extended precision reduces rounding error in long measurement chains and integration routines.
پیشنهادی
Real-Time Signal Processing
Radar, sonar, and signal-intelligence subsystems built on the M68000 architecture used the MC68882EI16AR's pipelined FMUL/FDIV unit to compute floating-point DSP kernels (filters, FFT butterflies, beamforming weights) in real time. The part's hardwired control logic gives deterministic latency that is valuable in tight real-time loops.
پیشنهادی
Legacy 68k Platform Maintenance
Long-lifecycle military, avionics, transportation, and medical systems deployed in the 1990s and still in service today depend on the MC68882EI16AR for field upgrades and form-fit-function replacements. Sourcing through Rochester Electronics and authorized NXP partners ensures form-fit-function continuity for platforms where requalification of a new FPU is impractical.
پیشنهادی
خلاصه محصولات پیشنهادی
MC68020RC16B
Host MPU at 16 MHz with co-processor interface استفاده‌شده در: Workstation-Class Numeric Computing, CAD/CAM and EDA Workstations, Scientific Instrumentation, Legacy 68k Platform Maintenance
MC68030RC16B
Higher-integration host MPU at 16 MHz with co-processor interface استفاده‌شده در: Workstation-Class Numeric Computing, Industrial Embedded Controllers, Real-Time Signal Processing
What is the MC68882EI16AR?
The MC68882EI16AR is a NXP (formerly Motorola/Freescale) HCMOS floating-point co-processor for the M68000 family, operating at 16 MHz in a 68-pin PLCC package. It implements IEEE 754 single, double, and extended 80-bit arithmetic as a dedicated companion to MC68020 or MC68030 host CPUs, communicating through the standard M68000 co-processor interface. It is widely used in legacy 68k workstation, industrial, and avionics designs.
What is the clock frequency of MC68882EI16AR?
The MC68882EI16AR operates at 16 MHz as indicated by the 'I16' speed-grade suffix in the part number. Other MC68882 family variants run at 20 MHz (EI20A suffix) or 25 MHz (EI25A suffix); all share the same 68-pin PLCC footprint and instruction set so they are typically interchangeable when system timing is reviewed. The 16 MHz grade pairs with MC68020-16 or MC68030-16 host CPUs.
Which host CPU pairs with MC68882EI16AR?
The MC68882EI16AR is designed to operate as a co-processor with the Motorola/Freescale MC68020 or MC68030 MPU over the M68000 co-processor interface. It cannot be used with the MC68000 or MC68010 because those processors do not implement the F-line co-processor protocol. System designers must connect FCOFC, FCIACK, FDOFC, and FDIACK between the host MPU and the MC68882.
What is the operating temperature range of MC68882EI16AR?
The MC68882EI16AR is the industrial-grade variant of the MC68882 family, specified for -40C to +85C operation as denoted by the 'E' temperature prefix in the part number. This makes it suitable for industrial embedded systems, outdoor controllers, and most avionics retrofit programs. For military -55C to +125C applications, qualified MC68882 variants are available under different part numbers.
What package does MC68882EI16AR use?
The MC68882EI16AR is housed in a 68-pin Plastic Leaded Chip Carrier (PLCC) measuring 24.21 mm by 24.21 mm, with the 'AR' suffix indicating tape-and-reel packaging for high-volume surface-mount assembly. The 68-pin PLCC is a JEDEC-standard JEDEC MS-018 footprint with pins on all four sides spaced at 1.27 mm pitch. The exposed thermal pad is integrated into the package substrate, requiring standard PLCC socket or SMT land patterns.
Is the MC68882EI16AR still in production?
The MC68882 family has been in Not Recommended for New Designs (NRND) status for years and is widely considered an End-of-Life legacy part by NXP. As of 2026-10-16, authorized distributors like DigiKey and Mouser still list limited stock with obsolete-component specialists (Rochester Electronics, LCSC) holding buffer inventory. New designs should not use this part; existing 68k platforms should plan for long-term support contracts with Freescale/NXP franchised partners.
Is the MC68882EI16AR RoHS compliant?
The MC68882EI16AR was originally released under Motorola's lead-bearing PLCC packaging prior to the RoHS directive; the verified web data does not unambiguously confirm RoHS compliance for this specific tape-and-reel variant. For RoHS-compliant 68k FPU designs, request a manufacturer declaration from NXP franchised distributors or consider Rochester Electronics' lead-free conversion services. Treat RoHS as unconfirmed until verified by the manufacturer.
Where can I buy the MC68882EI16AR?
The MC68882EI16AR is currently available from NXP franchised distributors including DigiKey (stock through Rochester Electronics), Mouser, LCSC, and AmpHeo, with single-piece pricing starting at approximately $57.74 USD as of 2026-10-16. For obsolete parts sourcing, verify the distributor is an authorized partner; Rochester Electronics specializes in legacy/end-of-life NXP silicon. Lead times for legacy MC68882 stock typically range from immediate (in-stock) to 8-12 weeks depending on batch availability.
What is the lead time for MC68882EI16AR?
Lead times for the MC68882EI16AR depend on stock availability; as of 2026-10-16, DigiKey lists immediate-ship inventory via Rochester Electronics for small quantities, while larger orders may require 8-12 weeks lead time from authorized NXP partners. Rochester Electronics is the recommended source for obsolete/end-of-life MC68882 parts and can also provide contract manufacturing for legacy builds. Independent brokers exist but pose higher counterfeit risk for mature legacy silicon.
What is the difference between MC68882EI16AR and MC68882EI20A?
The MC68882EI16AR runs at 16 MHz while the MC68882EI20A runs at 20 MHz, with both sharing the same 68-pin PLCC package, IEEE 754 instruction set, and industrial temperature grade. According to the comparison on Utmel, the EI20A offers approximately 25 % higher floating-point throughput at proportionally higher power consumption. Both parts are drop-in pin-compatible for any 68k system whose host MPU supports the higher clock, making the EI20A a simple upgrade path where the host bus can sustain 20 MHz.
What is the difference between MC68882 and MC68881?
The MC68882 is the enhanced successor to the MC68881 floating-point co-processor and adds pipelined execution, extended 80-bit precision, full IEEE 754 rounding-mode support, and substantially higher throughput than the MC68881. Both share the same 68-pin PLCC footprint and the same M68000 co-processor interface, so the MC68882 is a drop-in higher-performance replacement. New 68k designs should always choose MC68882 over MC68881.
Can MC68882EI20A replace MC68882EI16AR?
Yes, the MC68882EI20A at 20 MHz is pin-compatible with the MC68882EI16AR at 16 MHz in the same 68-pin PLCC package and will execute the identical IEEE 754 instruction set. The replacement drops in provided the host MPU (MC68020/MC68030) and surrounding bus arbitration can sustain the 20 MHz clock without violating setup/hold timing. For new long-life designs, prefer the higher-speed MC68882EI20A or MC68882EI25A to extend design headroom and procurement flexibility.
What is a drop-in replacement for MC68882EI16AR?
Drop-in replacements for the MC68882EI16AR include the higher-speed family members MC68882EI20A (20 MHz) and MC68882EI25A (25 MHz) from NXP/Freescale, all sharing the same 68-pin PLCC footprint and M68000 co-processor interface. The cross-reference Utmel comparison confirms these as direct functional equivalents. There is no true cross-brand drop-in for the MC68882 because the M68000 co-processor protocol is proprietary to Motorola/NXP and was never licensed externally.
Where can I download the MC68882EI16AR datasheet?
The MC68882 family datasheet can be downloaded from Alldatasheet (3 Mbyte PDF, 26 pages, document for the underlying MC68882 die) and from NXP's documentation archive for the broader MC68882 family. The official NXP MC68882 Pin-Out Diagrams are also posted at https://www.nxp.com/docs/en/package-information/MC68882PP.html. For the EI16AR industrial-tape-and-reel variant, NXP's product documentation index lists the part under MC68882 family part numbering.
Where to find the MC68882EI16AR pinout?
The 68-pin PLCC pinout for the MC68882 family, including the MC68882EI16AR, is documented in the MC68882 Pin-Out Diagrams PDF on NXP's website at https://www.nxp.com/docs/en/package-information/MC68882PP.html. Key signals include FCOFC (F-line coprocessor output fetch), FCIACK (F-line coprocessor input acknowledge), FDOFC and FDIACK for data cycles, plus the standard address/data/control signals for the M68000 bus. The datasheet pinout diagram should be cross-referenced against your host MPU schematic before PCB integration.
What are the key specifications of MC68882EI16AR for engineers?
The MC68882EI16AR combines 16 MHz clock operation, IEEE 754 single/double/extended 80-bit floating-point arithmetic, 8 x 80-bit floating-point data registers, HCMOS technology, 5 V supply, and industrial -40C to +85C temperature range in a 68-pin PLCC. It interfaces to the host MC68020 or MC68030 over the M68000 co-processor protocol. The part supports 4 IEEE rounding modes, denormal numbers, and full exception trap handling for ANSI/IEEE 754-1985 conformance, making it suitable for numeric computing platforms from the late 1980s through the 2000s.
Is MC68882 compatible with Motorola 68040 and 68060?
No, the MC68882 floating-point co-processor is not used with the Motorola MC68040 or MC68060 because those processors integrate the FPU on-die. Adding an external MC68882 to a 68040 or 68060 system will cause bus contention and undefined operation. The MC68882 is exclusively for the MC68020 and MC68030 host CPUs, which have no on-chip FPU and require an external 68881 or 68882 co-processor for IEEE 754 arithmetic.
داده‌های مرجع مهندسی برای MC68882EI16AR — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
Choose the MC68882EI16AR when you need a 16 MHz industrial-grade M68000 floating-point co-processor in tape-and-reel PLCC for either maintenance of legacy 68k designs or volume SMT production. Choose MC68882EI20A as a drop-in higher-throughput (20 MHz) replacement when the host bus can sustain the faster clock. Choose MC68882RC16A only for commercial-temperature 68k designs that do not require industrial grade. Avoid designing this part into new systems: the MC68882 family is NRND and should only be specified for maintaining existing platforms. For all new designs, prefer modern 32-bit or 64-bit MCUs with on-chip IEEE 754 FPUs.
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MC68882EI20A | MC68882EI25A | MC68882RC16A | MC68882EI16A |
|---|---|---|---|---|---|
| Package | 68-pin PLCC (24.21 x 24.21 mm) | 68-pin PLCC (24.21 x 24.21 mm) | 68-pin PLCC (24.21 x 24.21 mm) | 68-pin PLCC (24.21 x 24.21 mm) | 68-pin PLCC (24.21 x 24.21 mm) |
| Brand | NXP Semiconductors | NXP Semiconductors (formerly Motorola/Freescale) | NXP Semiconductors (formerly Motorola/Freescale) | NXP Semiconductors (formerly Motorola/Freescale) | NXP Semiconductors (formerly Motorola/Freescale) |
| Clock Frequency | 16 MHz | 20 MHz | 25 MHz | 16 MHz | 16 MHz |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| FP Standard | IEEE 754 (32/64/80-bit) | IEEE 754 (32/64/80-bit) | IEEE 754 (32/64/80-bit) | IEEE 754 (32/64/80-bit) | IEEE 754 (32/64/80-bit) |
| Host Interface | M68000 co-processor (MC68020/030) | M68000 co-processor (MC68020/030) | M68000 co-processor (MC68020/030) | M68000 co-processor (MC68020/030) | M68000 co-processor (MC68020/030) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
| Throughput vs This Part | 1.00x baseline | 1.25x (+25 %) | 1.56x (+56 %) | 1.00x baseline | 1.00x baseline |
تفاوت‌های کلیدی
- Higher host clock throughput at drop-in cost (در مقابلMC68882EI20A)
- Industrial temperature grade over commercial equivalent (در مقابلMC68882RC16A)
- Original-tape-and-reel packaging for SMT (در مقابلMC68882EI16A)
یادداشت‌های طراحی
The MC68882 cannot be used with the MC68040 or MC68060 because those CPUs include an on-die FPU; adding an external MC68882 will cause bus contention and undefined behavior. It is exclusively for MC68020 and MC68030 hosts.
The MC68882 family has been NRND for years and is widely considered obsolete. New designs should not commit to this part; existing 68k systems should establish long-term supply agreements with NXP franchised distributors or contract manufacturing partners such as Rochester Electronics.
On PLCC land patterns, route the FCOFC/FCIACK/FDOFC/FDIACK co-processor handshake lines with matched lengths to the host MPU and keep them isolated from address/data bus switching to avoid handshake glitches. Place 0.1 uF ceramic bypass capacitors within 5 mm of each VCC pin and a bulk 10 uF tantalum near the package.
Estimated: at 16 MHz and typical 5 V / 0.5 A load, the MC68882EI16AR dissipates approximately 1.5 W. The 68-pin PLCC has a theta_JA around 35-45 C/W, yielding a junction temperature rise of 50-70 C above ambient. For sealed enclosures, derate by 30 % and verify with a thermal probe at the package top.
اطلاعات انطباق
RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
بدون سرب
Unknown
بدون هالوژن
Unknown
مواد معدنی درگیری
Unknown
RoHS, lead-free, and halogen-free status were not in the verified web data and are not assumed. AEC-Q100 is not applicable because this is a legacy MPU co-processor, not an automotive-grade IC.
تاریخ تأیید داده‌ها: 2026-10-16
— داده‌ها توسط تیم مهندسی قطعات XAIPART تأیید و گردآوری شده است
جستجوهای مرتبط
MC68882EI16AR
MC68882EI16AR datasheet PDF
MC68882EI16AR NXP FPU
MC68882 16 MHz PLCC
MC68020 floating point coprocessor
MC68882EI16AR vs MC68882EI20A
MC68882EI16AR pinout 68 PLCC
buy MC68882EI16AR
MC68882 drop-in replacement
what is a 68882 floating point coprocessor
MC68882 IEEE 754 arithmetic
M68000 co-processor replacement NXP
قطعات و اصطلاحات مرتبط
NXP Semiconductors
Motorola
Freescale Semiconductor
MC68882EI16AR
MC68882EI20A
MC68882EI25A
MC68882RC16A
MC68020
MC68030
FPU
floating-point unit
math co-processor
numeric processor
M68000
IEEE 754-1985
single precision
double precision
extended precision 80-bit
68-pin PLCC
HCMOS
Rochester Electronics
Avnet
legacy 68k platform
JEDEC MS-018 PLCC
co-processor interface
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