MC68302RC16C - 16MHz M68000 IMP | NXP Semiconductors
Référence : MC68302RC16C ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $65 | $65,00 |
| 10 | $58.5 | $585,00 |
| 100 | $52 | $5 200,00 |
| 500 | $46.8 | $23 400,00 |
| 1 000 | $42.5 | $42 500,00 |
MC68302RC16C Présentation
What is an Integrated Multiprotocol Processor (IMP)? An IMP is a highly integrated single-chip solution that combines a general-purpose microprocessor with dedicated serial-communications peripherals (such as HDLC/SDLC controllers, UARTs, and timers) plus DMA channels, all on the same silicon die. Within the broader component taxonomy the MC68302 sits between a microcontroller (MCU) and an applications processor, with a product hierarchy of M68000 core -> microprocessor (MPU) -> standard microprocessor -> discrete digital IC -> semiconductor. The IMP concept reduces board area, BOM cost and software complexity when implementing multi-channel communication endpoints.
Key features include the M68000 CPU core running at 16 MHz, three serial communications controllers (SCCs) supporting HDLC/SDLC/UART/Transparent modes, two serial management controllers (SMCs), two peripheral/timer modules, up to four DMA channels, and up to 2 Kbytes of dual-ported system RAM. The device supports a 16-bit data bus and a 24-bit address bus, four external chip-select outputs with programmable wait-state generation, and a 5 V single supply. Software compatibility with the broader MC68000 family allows reuse of existing toolchains, compilers, and OS ports.
Architecturally, the MC68302 combines the proven 68000 instruction set with RISC-style on-chip peripheral engines connected via an internal bus, allowing the CPU to offload bit-rate-oriented protocol work to dedicated hardware. This architecture delivers deterministic throughput on multiple HDLC channels while leaving CPU cycles available for the upper-layer protocol stack and management plane.
Typical applications include multi-channel WAN routers and bridges, ISDN terminal adapters, telecom line cards, industrial serial concentrators, and legacy networking equipment. The combination of an industry-standard CPU and on-chip communications peripherals also makes the part attractive for protocol-conversion gateways and embedded control planes where deterministic I/O is required.
When designing with this device, allocate the 132-pin PGA footprint on a through-hole or pin-grid-array compatible PCB, provide a 5 V supply with adequate decoupling near the supply pins, and use a Motorola-compatible toolchain (such as a 68K compiler and a BDM or background-debug interface) for firmware bring-up. Note that this part contains lead and is RoHS non-compliant; it is now considered a legacy/extended-life component with new designs expected to migrate to RoHS-compliant successors.
This page synthesizes distributor pricing, the pin-equivalent same-family alternatives, and practical design notes not found in the original manufacturer datasheet.
Alternatives de remplacement direct pour MC68302RC16C — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC68302RC16C (même facteur de forme et même empreinte) — différant par DMA Channels, Mounting Type, Address Bus Width, Bit Width, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC68302RC16B
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302RC20
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302RC25
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC68302CFC16
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68EN360RC25B
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC68302RC16C Valeurs maximales et caractéristiques électriques
| Manufacturer | NXP Semiconductors |
| Series | MC68302 (IMP - Integrated Multiprotocol Processor) |
| Product Type | Microprocessor (MPU) / Integrated Multiprotocol Processor |
| Core Architecture | M68000 / MC68000 / MC68008 family |
| Number of Cores | 1 |
| Largeur du bus de données | 8/16-Bit |
| Clock / Operating Frequency | 16 MHz |
| Tension d'alimentation | 5 V |
| Package Type | 132-PGA (Pin Grid Array) |
| Package Dimensions | 34.5 x 34.5 mm |
| Type de montage | Through-Hole (PGA) |
| On-Chip Communications Controllers (SCC) | 3 (HDLC/SDLC/UART/Transparent) |
| On-Chip Serial Management Controllers (SMC) | 2 |
| DMA Channels | Up to 4 |
| On-Chip System RAM | Up to 2 Kbytes (dual-ported) |
| External Chip-Select Lines | Up to 4 |
| Lead Free Status | Contains Lead |
| Statut RoHS | RoHS Non-Compliant |
Guide de configuration des broches du MC68302RC16C 34.5 x 34.5 mm
Configuration des broches du MC68302RC16C (boîtier 34.5 x 34.5 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MC68302RC16C.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC68302RC16C convient pour 6 applications: Multi-channel WAN Router / Bridge, ISDN Terminal Adapter, Telecom Line Card / Multiplexer, Industrial Serial Concentrator / Sub-Station Gateway, Legacy Protocol-Conversion Gateway, Embedded Control Plane for Networking Appliance.
Multi-channel WAN Router / Bridge
The MC68302RC16C is a strong fit for legacy multi-channel WAN routers and protocol bridges because it integrates the M68000 CPU core with three independent HDLC/SDLC-capable serial communications controllers (SCCs), two serial management controllers (SMCs), and up to four DMA channels on a single die. Each SCC supports HDLC/SDLC, UART, and transparent modes, allowing the part to terminate multiple synchronous WAN links (V.35, RS-449, X.21) at line rates without offloading the CPU. Placed at the heart of a router line card with external transceivers and 5 V supply, the MC68302RC16C executes routing and bridging protocols while the SCC DMA engines move packet data directly to and from system memory, leaving CPU bandwidth for the management plane. Compared to a discrete CPU + UART + DMA implementation, the IMP reduces board area, BOM cost, and firmware complexity.
Recommandé
ISDN Terminal Adapter
The MC68302RC16C fits ISDN terminal adapters because its SCCs run HDLC/HDLC-PPP framing on the ISDN BRI/U interfaces and its M68000 core runs the upper-layer signalling stack (Q.921/Q.931). With 16 MHz of CPU bandwidth, the device can sustain two 64 kbps B-channels plus the 16 kbps D-channel while still serving PPP/TCP/IP. A 5 V single supply, on-chip dual-ported system RAM, and 4 DMA channels simplify the BOM and reduce board complexity versus a discrete MCU-plus-HDLC-controller design, where the designer would otherwise glue two chips together. Pinout-compatible MC68302 variants allow a single PCB layout to address different country ISDN variants and performance tiers.
Recommandé
Telecom Line Card / Multiplexer
For telecom line cards and TDM multiplexers, the MC68302RC16C delivers three independent HDLC-capable serial channels and deterministic DMA-driven I/O, matching the requirements of T1/E1 channel banks and sub-rate multiplexers. Designers typically pair the part with an external T1/E1 framer such as the DS2155 or DS26502 to handle the physical-layer framing and clock recovery, while the MC68302RC16C handles per-channel protocol, statistics, and alarm processing. Its mature M68000 toolchain and on-chip timers simplify integration with legacy SS7/HDLC management planes, and the 132-pin PGA package provides the mechanical reliability expected in carrier-grade equipment with extended field life. Pin-compatible 20 MHz and 25 MHz grades enable the same line card to scale to higher channel densities.
Recommandé
Industrial Serial Concentrator / Sub-Station Gateway
In industrial serial concentrators and sub-station gateways, the MC68302RC16C's combination of three HDLC/UART SCCs, two SMCs, four DMA channels and a 16 MHz M68000 core handles multiple fieldbuses and serial protocols concurrently. The on-chip peripherals support popular industrial electrical interfaces (RS-485, RS-232, RS-422, 20 mA current loop) with software-defined framing for Modbus, PROFIBUS, DNP3 or custom protocols. The mature 68K toolchain, deterministic interrupt latency and dual-ported system RAM ease real-time firmware development. Because the part is NRND/long-life, it is well-suited to industrial-class products with 15-20 year deployment horizons. Pin-compatible same-family MC68302 variants cover lifecycle and performance options.
Recommandé
Legacy Protocol-Conversion Gateway
Protocol-conversion gateways (X.25-to-IP, SNA-to-LAN, async-to-HDLC) benefit from the MC68302RC16C's heterogeneous mix of HDLC and UART controllers plus a general-purpose M68000 core. Each SCC can independently terminate a synchronous or asynchronous serial link while the CPU runs the protocol-conversion state machine, and the on-chip dual-ported RAM allows DMA-driven data exchange without bus contention. The 5 V single supply and through-hole PGA package make the part especially suitable for legacy systems where new through-hole PCBs are still being produced. Same-package alternatives let designers choose between identical silicon revisions or faster CPU grades without PCB rework.
Recommandé
Embedded Control Plane for Networking Appliance
Within an embedded networking appliance, the MC68302RC16C can act as the management-plane processor alongside a host CPU: its M68000 core handles out-of-band management, device telemetry, watchdog, and configuration tasks while the SCCs expose console and management interfaces (UART, HDLC, transparent serial). On-chip timers, four DMA channels and a small dual-ported system RAM reduce external component count on the management sub-system. Designers often pair the MC68302RC16C with a flash memory (29F010/28F256 equivalent) and a 93C46-style serial EEPROM to deliver a self-contained management sub-system that boots independently of the main host. Same-family alternatives in the same 132-pin PGA footprint ensure continued sourcing for long-lifecycle networking products.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC68302RC16C — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC68302RC16B | MC68302RC20 | MC68302RC25 | MC68302CFC16 | MC68EN360RC25B |
|---|---|---|---|---|---|---|
| Package | 132-PGA (34.5 x 34.5 mm) | 132-PGA - same | 132-PGA - same | 132-PGA - same | 132-PGA - same | 132-PGA - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| CPU Core | M68000 / 16 MHz | M68000 / 16 MHz | M68000 / 20 MHz | M68000 / 25 MHz | M68000 / 16 MHz | M68000 / 25 MHz |
| Data Bus Width | 8/16-Bit | 8/16-Bit | 8/16-Bit | 8/16-Bit | 8/16-Bit | 8/16-Bit |
| SCC (HDLC/UART) Channels | 3 | 3 | 3 | 3 | 3 | 4 |
| DMA Channels | Up to 4 | Up to 4 | Up to 4 | Up to 4 | Up to 4 | Up to 4 |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| RoHS Status | Non-Compliant (Contains Lead) | Non-Compliant (Contains Lead) | Non-Compliant (Contains Lead) | Non-Compliant (Contains Lead) | Non-Compliant (Contains Lead) | Non-Compliant (Contains Lead) |
Principaux différenciateurs
- Industry-standard M68000 CPU core for mature toolchain reuse (vs MC68EN360RC25B)
- Pin-compatible same-family upgrade path (vs MC68302RC20)
- Three HDLC/SDLC-capable SCCs on-die for multi-channel comms (vs MC68302RC25)
Notes de conception
The MC68302RC16C requires a well-regulated 5 V supply because the M68000 core and SCC logic are sensitive to rail ripple. Provide a bulk decoupling capacitor (typically 10-22 uF) at the board input, plus 0.1 uF ceramic decoupling adjacent to each VCC/GND pin pair on the 132-pin PGA. Typical power consumption is in the 1-2 W range at 16 MHz, depending on peripheral activity. For long-life designs, size the regulator with adequate margin for warm-up surge and consider a supervisory reset IC (e.g. MC34064 equivalent) to provide a clean reset to the IMP.
The 132-pin PGA through-hole package requires plated through-hole pads and a socket if field replacement is desired. Place the decoupling network as close as possible to the package and route the address/data bus with matched trace lengths to support the M68000's bus timing at 16 MHz (and remember that 20 MHz and 25 MHz same-family alternatives will require tighter timing margins). Provide a robust ground plane under and around the PGA socket to minimize return-path impedance for the HDLC drivers.
Do not assume the MC68302RC16C and the slightly older -B revision are interchangeable for all customer-support purposes; some very old mask -A silicon had errata that were fixed in -B. Also note that the part contains lead and is RoHS non-compliant, so new designs targeted at the EU and other RoHS-regulated markets should evaluate a RoHS-compliant successor or a different family. Confirm that the BDM/background-debug interface signals are not blocked by an external transceiver in production boards, because field debug access is essential for 68K-class firmware development.
While the 132-pin PGA package has good thermal mass and through-hole heat conduction to inner copper layers, the MC68302RC16C can still get warm in enclosed industrial enclosures with limited airflow. Provide thermal vias under the PGA socket to inner ground planes, and verify junction temperature against the data sheet's thermal resistance. For sealed enclosures, consider adding a small clip-on heatsink on the PGA shield or placing the device in the airflow path of a forced-air fan.
Informations de conformité
RoHS non-compliant and contains lead per NXP datasheet page. Reach, halogen-free and conflict-mineral status were not present in the Verified Web Data and are marked unknown. AEC-Q100 is not applicable for this MPU category.
