MC68LC302CAF16CT-FR - 16MHz 32-bit M68K MPU | NXP | 100-LQFP
MPN: MC68LC302CAF16CT-FR ⚠ Huling PagbiliMC68LC302CAF16CT-FR Ulas
A microprocessor (MPU) is an integrated circuit that contains the central processing unit of a computer or embedded system. The M68K (Motorola 68000) architecture is a 32-bit CISC ISA introduced in 1979 and used widely in early Macintosh computers, Sun workstations, and embedded controllers. The MC68LC302 sits within the power management and microcontroller hierarchy as MPU -> 32-bit processor -> communications controller -> multiprotocol processor. Within the broader taxonomy it is classified as an MPU in the Integrated Circuits hierarchy. The 'C' suffix indicates CPM communications capability, and the 'AF' indicates the LQFP package family.
Key features of the MC68LC302CAF16CT-FR include a 16 MHz clock, 5V supply operation, 100-LQFP (14x14 mm) surface-mount package, and an integrated RISC CPM that offloads serial communications from the main CPU. The device supports multiple serial protocols through dedicated channels, making it suitable for embedded networking equipment where deterministic serial I/O handling is essential. The LQFP-100 footprint provides manageable PCB escape routing while still exposing the full address and data bus plus CPM peripherals.
In terms of architecture, the part combines an industry-standard MC68000 core with a flexible, multi-channel communications engine, offering a closely-coupled processor-plus-protocol-engine solution. This integration reduces component count on legacy telecom, industrial control, and serial-networking designs compared with discrete CPU-plus-UART implementations. Note that the MPN carries a 'Not For New Designs' part status from NXP, which means the device is no longer recommended for new product development but continues to be supported for existing designs.
Typical applications include ISDN terminal adapters, frame relay access devices, industrial serial-bus bridges, legacy telecom equipment, and embedded networking controllers. The integrated CPM and 68000 core provide deterministic serial-protocol handling without burdening the host CPU.
When designing with this part, ensure a clean 5V power rail with adequate decoupling (0.1uF ceramic + bulk) placed close to the supply pins. Because the device is in 'Not For New Designs' status, prototype qualification should consider long-term availability and seek drop-in equivalents if lifecycle support is required for production runs beyond 2030.
This page consolidates distributor pricing, drop-in compatible alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers and procurement teams evaluate lifecycle risk and second-source options for legacy communications designs.
Mga alternatibo na pwedeng ilagay na MC68LC302CAF16CT-FR — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok MC68LC302CAF16CT-FR (parehas na form factor at footprint) — pagkakaiba sa Part Status, Co-Processor / DSP, Core Architecture, Maximum Clock Speed, Package / Case.
MC68LC302CAF16CT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →MC68EN302CAF16CT
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
MC68302CAF16CT
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
MC68LC302CAGF16CT
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
MC68LC302CAF20CT
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →MC68LC302CAF16CT-FR Mga Pinakamataas na Rating at Electrical Characteristics
| Manufacturer | NXP Semiconductors (formerly Freescale, Motorola) |
| Part Status | Not For New Designs |
| Core Processor | M68000 |
| Core Size | 32-bit |
| Number of Cores / Bus Width | 1 Core, 8/16-Bit external |
| Speed (Clock) | 16 MHz |
| Co-Processors / DSP | Communications; RISC CPM |
| RAM Controllers | DRAM |
| Operating Voltage | 5 V |
| Voltage Range | 4.75 V to 5.25 V |
| Graphics Acceleration | No |
| Packhaging / Kaso | 100-LQFP (14x14 mm) |
| Packaging | Tape & Reel (FR suffix) |
| Uri ng Pagpapasok | Surface Mount |
| Lead Free Status | Lead Free |
| Tindminan RoHS | RoHS Compliant |
| Series | M683xx |
| Controller Family | 68K |
Gabay sa Pin Configuration ng MC68LC302CAF16CT-FR 100-lqfp (14x14 mm)
Pin configuration para sa MC68LC302CAF16CT-FR (100-lqfp (14x14 mm) package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa MC68LC302CAF16CT-FR.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
MC68LC302CAF16CT-FR ay nararapat para sa 7 aplikasyons: Legacy ISDN Terminal Adapters, Frame Relay Access Devices, Industrial Serial Bus Bridges, Embedded Telecom Controllers, Legacy Point-of-Sale Terminals, Avionics Databus Interfaces, Legacy Medical Monitoring Equipment.
Legacy ISDN Terminal Adapters
The MC68LC302CAF16CT-FR integrates the M68000 core with a RISC CPM that natively handles ISDN D-channel protocols through dedicated serial channels. Its 16 MHz clock delivers adequate throughput for ISDN BRI rates (192 kbps) plus user-data routing without offloading the host CPU. Placed on a 5 V motherboard with 0.1uF decoupling and external DRAM, the device replaces a discrete CPU-plus-multiple-UART design. Unlike newer ColdFire parts, the 68LC302 preserves 68000 assembly-language compatibility for legacy ISDN firmware, minimizing porting effort and qualification cost.
Inirekomenda
Frame Relay Access Devices
Frame Relay access devices require deterministic serial handling at modest bit rates, exactly the workload the MC68LC302CAF16CT-FR's CPM was designed for. The integrated RISC CPM offloads HDLC framing from the 68000 core, freeing the CPU for routing-table maintenance. At 5 V and 16 MHz, the device is dimensioned for sustained 64 kbps to 2 Mbps frame-relay links. Compared with general-purpose ARM Cortex-M0+ MCUs of similar price, the 68LC302 offers on-chip HDLC controllers that would otherwise need external UARTs.
Inirekomenda
Industrial Serial Bus Bridges
The MC68LC302CAF16CT-FR bridges legacy RS-232/RS-485 industrial networks to higher-level controllers, leveraging its integrated multi-channel CPM to handle concurrent serial streams. The 100-LQFP (14x14) package is footprint-compatible with prior 68K designs, easing upgrades without PCB rework. Operating from 4.75-5.25 V with on-chip DRAM control, the part minimizes BOM cost. Compared with newer Cortex-M serial-bridge chips, the 68LC302 offers proven long-term stability in industrial plants where decades of uptime matter.
Inirekomenda
Embedded Telecom Controllers
Embedded telecom controllers use the MC68LC302CAF16CT-FR to manage signaling channels (D-channel HDLC, V.24, X.21) while the CPM handles line-discipline offload. The 68000 core runs the higher-layer call-control stack, and the integrated DRAM controller simplifies the memory subsystem. The 100-LQFP package supplies the necessary I/O count for parallel bus plus multiple serial interfaces. Compared with ColdFire V1, the 68LC302 trades clock speed (16 MHz vs 50+ MHz) for proven telecom-grade firmware reuse.
Inirekomenda
Legacy Point-of-Sale Terminals
Point-of-sale terminals built around the 68000 architecture deploy the MC68LC302CAF16CT-FR as a cost-optimized successor to the original MC68302 IMP. The device's 16 MHz clock and integrated CPM support legacy serial protocols used by older POS peripherals (PINCodes, magnetic-stripe readers, receipt printers). RoHS compliance enables continued sale in markets requiring Pb-free assembly. Compared with modern ARM-based POS platforms, the 68LC302 preserves existing 68K firmware investments and pin-compatible socket upgrades.
Inirekomenda
Avionics Databus Interfaces
Avionics databus interfaces such as ARINC 429 and MIL-STD-1553 bridges use the MC68LC302CAF16CT-FR's multi-channel CPM to manage concurrent avionics datastreams with deterministic latency. The 5 V supply and 100-LQFP package are stable on long-lifecycle avionics hardware where decades of support matter. At 16 MHz, the 68000 core handles bus-protocol arbitration while running the host application. Compared with newer Cortex-M avionics MCUs, the 68LC302 offers proven DO-178-friendly code reuse for legacy avionics platforms.
Inirekomenda
Legacy Medical Monitoring Equipment
Class-II and Class-III medical monitoring equipment deployed in the late 1990s and 2000s often uses the MC68LC302CAF16CT-FR for serial bus concentration between bedside sensors and a host processor. The integrated RISC CPM provides deterministic sampling latency for continuous vital-sign monitors. The 100-LQFP package and 5 V supply are stable in regulated medical environments. Compared with newer low-power ARM Cortex parts, the 68LC302 prioritizes long-term availability for medical devices whose certification cycles run into decades.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for MC68LC302CAF16CT-FR — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | MC68LC302CAF16CT | MC68EN302CAF16CT | MC68302CAF16CT | MC68LC302CAGF16CT | MC68LC302CAF20CT |
|---|---|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Core Processor | M68000 32-bit | M68000 32-bit - same | M68000 32-bit - same | M68000 32-bit - same | M68000 32-bit - same | M68000 32-bit - same |
| Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 20 MHz (+25%) |
| Operating Voltage | 5 V (4.75-5.25 V) | 5 V - same | 5 V - same | 5 V - same | 5 V - same | 5 V - same |
| CPM (RISC Communications) | Yes | Yes - same | Yes + Ethernet - enhanced | Yes (full feature) - enhanced | Yes - same | Yes - same |
| DRAM Controller | Yes (integrated) | Yes | Yes | Yes | Yes | Yes |
| Part Status (NXP) | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs |
Pangunahing mga Pagkakaiba
- Tape & Reel packaging for high-volume SMT assembly (kumpara saMC68LC302CAF16CT (tray))
- Ethernet-capable family upgrade path exists in same package (kumpara saMC68302CAF16CT)
- Higher-clock 20 MHz drop-in variant available (kumpara saMC68LC302CAF20CT)
Talaan ng Disenyo
Estimated: the MC68LC302CAF16CT-FR draws roughly 120 mA typical at 16 MHz / 5 V (~0.6 W) for the core, with peripheral I/O adding another 30-50 mA depending on bus activity. Provide a 5 V rail with at least 10% headroom (a 1 A LDO or switching pre-regulator), plus 0.1 uF ceramic decoupling on every VCC pin and a single 10 uF tantalum bulk capacitor. Place the bulk capacitor within 25 mm of the package. Add a 10 uF + 0.1 uF pair on the PLL supply pin if exposed.
Estimated: at 5 V x 0.15 A the die dissipates ~0.75 W, and the 100-LQFP (14x14 mm) thermal pad has a theta_JA of approximately 35-45 C/W on a 4-layer 1 oz PCB. Junction-to-ambient rise is therefore ~30 C at 70 C ambient - well inside the commercial operating range, but industrial (-40 to +85 C) layouts should add copper flooding under the exposed pad if present, or thermal vias to inner ground planes to keep Tj below 125 C.
Route the 16 MHz clock trace as a short, impedance-controlled length (target <15 mm) with a series-termination resistor near the driver. Keep address and data bus traces length-matched within +/-5 mm to avoid bus-skew at 16 MHz. Place external DRAM chips within 50 mm of the bus pins and use guard traces or ground-plane stitching between bus and clock regions. For CPM serial lines, add 22 ohm series resistors close to the driver to dampen ringing on RS-485 / RS-232 traces exceeding 50 mm.
Do not assume the MC68LC302 has the same full-feature serial peripherals as the original MC68302 - the LC variant strips some channels to reduce cost; verify your schematic against the LC pinout rather than the 302 reference manual. Do not exceed 5.25 V on any supply pin, including transient spikes. Do not leave the reset pin floating - it requires an external RC or supervisor. Finally, do not design the IC into a new program without lifecycle planning; this part is flagged 'Not For New Designs' and stock is limited to legacy-support inventory.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliant and Lead Free per DigiKey listing. AEC-Q100 not applicable for legacy telecom/industrial MPU. REACH status assumed compliant; halogen-free and conflict-minerals declarations not found in provided data.