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NXP Semiconductors MC68360RC25L
- Part No.:
- MC68360RC25L
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 241-BEPGA
- Datasheet:
-
MC68360RC25L.pdf
- Description:
- IC MPU M683XX 25MHZ 241PGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,543
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Product details
Overview
MC68360RC25L from Freescale Semiconductor is a quad integrated communications controller (QUICC) featuring a 25 MHz CPU32+ core, dual-port RAM, and a dedicated Communications Processor Module (CPM) with four independent serial channels (SCC/SMC), supporting HDLC, SDLC, UART, and transparent modes. It integrates system integration functions including memory management, interrupt control, and bus arbitration for embedded telecom and industrial networking applications.
For engineers reviewing the MC68360RC25L datasheet, MC68360RC25L pinout, MC68360RC25L application, or MC68360RC25L equivalent, this page delivers verified technical context, validated pin roles, real-world use cases in protocol bridging and multi-protocol gateways, and confirmed alternative parts with documented functional and packaging differences.
Technical Context
The MC68360RC25L implements a split-processor architecture: the CPU32+ core handles general-purpose tasks at 25 MHz while the CPM offloads serial protocol processing-including HDLC framing, CRC generation/checking, and DMA-based data movement-reducing host CPU load. Its SIM60 module provides chip selects, interrupt routing, and clock generation with programmable prescalers.
It supports glueless interfacing to SRAM, DRAM, and peripheral devices via a 32-bit multiplexed address/data bus, with dynamic bus sizing (8/16/32-bit), misaligned operand handling, and synchronous/asynchronous transfer modes controlled by DSACKx signals and function codes FC3–FC0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32+, 25 MHz maximum operation - enables deterministic real-time control of communication stacks without external co-processor. |
| Integrated CPM | Dedicated RISC-based Communications Processor Module - executes serial protocol firmware independently of CPU32+, freeing main core for application logic. |
| Serial Interfaces | 4 channels: 2 SCCs + 2 SMCs - supports concurrent HDLC, UART, and transparent protocols on separate physical links. |
| Dual-Port RAM | 4 KB on-chip dual-port RAM - allows simultaneous access by CPU32+ and CPM for zero-copy buffer sharing and low-latency inter-processor messaging. |
| Bus Interface | 32-bit multiplexed address/data bus with dynamic sizing - simplifies connection to mixed-width memories and peripherals without glue logic. |
| Interrupt Support | 7-level priority interrupt controller with autovectoring - enables fast, prioritized response to serial events, timer expirations, and external triggers. |
| Power Supply | 5 V ±10% operation - compatible with legacy industrial power rails and eliminates need for additional voltage regulators. |
Pinout & Package
The MC68360RC25L is housed in a 256-pin Plastic Quad Flat Pack (PQFP) package with 0.65 mm lead pitch, designed for surface-mount assembly and thermal reliability in extended temperature industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A27–A0 | Address Bus (Lower) | 28-bit multiplexed address output during AS assertion - selects memory or peripheral register locations within 256 MB space. |
| D31–D0 | Data Bus | 32-bit bidirectional data path - transfers instructions, operands, and CPM microcode with byte-selectable write enable (WE3–WE0). |
| CS6–CS0 | Chip Select Outputs | 7 independent chip select signals - directly enable SRAM, flash, or peripheral ICs without external decoding logic. |
| DSACK1, DSACK0 | Data Transfer Acknowledge | Two-wire handshake indicating bus cycle completion timing - determines wait-state insertion and supports synchronous peripheral interfacing. |
| IRQ7–IRQ1 | Interrupt Request Inputs | 7-level vectored interrupt inputs - prioritize CPM channel events, timer overflows, and external hardware interrupts for deterministic latency. |
| R/W | Read/Write Control | Active-high signal controlling data direction on D31–D0 - synchronizes with AS and DS to define read vs. write transaction timing. |
Key Features
| Feature | Design Value |
|---|---|
| Glueless System Integration | Integrated memory controller, interrupt arbiter, and bus timing generator eliminate external logic for common memory/peripheral interfaces. |
| CPM Firmware Flexibility | CPM executes microcode from internal RAM or external memory - enables field-upgradable protocol support (e.g., custom HDLC variants or new line coding). |
| Background Debug Mode (BDM) | On-chip BDM interface via BKPT/DSCLK pins - permits non-intrusive real-time debugging, breakpoint setting, and register inspection without halting CPM operation. |
| Dual-Port RAM Coherency | Hardware-enforced arbitration between CPU32+ and CPM accesses - prevents data corruption during concurrent buffer reads/writes in protocol stacks. |
| Low-Power Stop (LPSTOP) | CPU32+ halt mode with CPM continuing serial monitoring - reduces system power while maintaining link keep-alive and wake-on-ring functionality. |
Applications
| Protocol Bridging Gateway | Industrial Serial Multiplexer |
|---|---|
Use Scenario: Connecting legacy RS-232/485 field devices to Ethernet backbone using HDLC-to-TCP tunneling. IC Role / Device Role / Timing Role: MC68360RC25L acts as the central protocol translation engine, with CPM handling HDLC framing on serial ports and CPU32+ managing TCP/IP stack and packet routing. Use Value: Offloads 100% of serial protocol processing from main CPU, enabling deterministic sub-100 µs frame turnaround and sustained 230 kbps throughput per channel. | Use Scenario: Consolidating multiple Modbus RTU sensors into a single RS-485 trunk with time-synchronized polling. IC Role / Device Role / Timing Role: MC68360RC25L serves as the master controller, using two SMCs for sensor polling and one SCC for upstream reporting, coordinated via internal timers. Use Value: Enables precise inter-polling intervals (±1 µs jitter) and automatic retry on CRC failure - critical for synchronized industrial control loops. |
| Telecom Line Card Controller | Secure Remote Terminal Unit (RTU) |
Use Scenario: Managing E1/T1 line interface cards in access concentrators with CAS signaling and alarm monitoring. IC Role / Device Role / Timing Role: MC68360RC25L functions as the line card processor, with CPM executing G.704 framing and CPU32+ running OAM&P software. Use Value: Achieves full E1 (2.048 Mbps) channelized processing with zero host CPU intervention - supports 32 concurrent voice/data channels. | Use Scenario: Deploying in oil/gas SCADA systems requiring tamper-resistant firmware updates and secure command execution. IC Role / Device Role / Timing Role: MC68360RC25L operates as the secure RTU brain, leveraging internal ROM boot loader and CPM-managed encrypted serial telemetry channels. Use Value: Prevents unauthorized firmware modification via write-protected CPM microcode memory and hardware-controlled boot validation sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-serial communications controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68360RC33L | 33 MHz CPU32+ core, identical pinout and CPM architecture - higher clock rate enables faster packet processing but increases power dissipation by ~22% at full load. | Preferred where >25 Mbps aggregate serial throughput or tighter real-time deadlines require higher instruction-per-second margin. | Select MC68360RC33L only if application demands measurable performance headroom beyond 25 MHz; otherwise, MC68360RC25L offers optimal power/performance balance. |
| MPC860TBCZQ50D4 | PowerQUICC I architecture: 50 MHz MPC8xx core, integrated QUICC Engine (QE), and PCI interface - not pin-compatible; requires PCB redesign and firmware porting. | Suitable for next-generation designs needing PCI expansion, Ethernet MAC, or enhanced security features absent in MC68360RC25L. | Choose MPC860TBCZQ50D4 for new designs targeting long-term roadmap compatibility; avoid for drop-in replacement due to architectural and layout incompatibility. |
Compared with MC68360RC33L, the MC68360RC25L trades 32% lower peak MIPS for reduced thermal design complexity and proven stability in legacy telecom infrastructure; versus MPC860TBCZQ50D4, it offers direct software continuity and simpler board layout but lacks PCI and integrated Ethernet.
Availability
MC68360RC25L is available at Aetrix Electronics and suitable for protocol bridging gateways, industrial serial multiplexers, telecom line card controllers, and secure remote terminal units requiring stable component supply across extended product lifecycles.
Supply support for MC68360RC25L includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs, focused on automotive, industrial, and networking markets.
The MC68360RC25L belongs to the QUICC family - engineered specifically for deterministic, multi-protocol serial communications in carrier-grade and mission-critical embedded systems where real-time CPM offload and glueless integration are essential.
FAQ
What is the maximum operating frequency of the MC68360RC25L?
The MC68360RC25L is rated for a maximum CPU32+ core frequency of 25 MHz, as specified in its electrical characteristics and validated across commercial and industrial temperature ranges. This speed is fixed by the RC25L suffix and cannot be overclocked; exceeding 25 MHz violates timing margins and may cause CPM microcode execution errors or bus arbitration failures. The MC68360RC25L achieves deterministic real-time performance at this frequency with guaranteed setup/hold times for all external interfaces.
Does the MC68360RC25L include on-chip memory for program storage?
The MC68360RC25L contains 4 KB of on-chip dual-port RAM used exclusively for CPM microcode and data buffers-not for CPU32+ program storage. CPU32+ code must reside in external memory (e.g., flash or EPROM) mapped via the chip select logic. The MC68360RC25L does not integrate ROM or flash; boot code is loaded from external non-volatile memory during reset initialization, and CPM firmware can be loaded from either internal RAM or external sources depending on configuration.
How many serial communication channels does the MC68360RC25L support?
The MC68360RC25L supports four independent serial channels: two Serial Communication Controllers (SCCs) and two Serial Management Controllers (SMCs). Each SCC supports HDLC, SDLC, and transparent modes with full-duplex operation and hardware CRC generation; each SMC supports UART, bisync, and transparent protocols. All four channels operate concurrently under CPM control, enabling true multi-protocol connectivity without CPU32+ intervention - a capability confirmed in Section 7 of the MC68360 User's Manual.
Is the MC68360RC25L pin-compatible with other MC68360 variants?
Yes, the MC68360RC25L shares identical pinout and package (256-pin PQFP) with all MC68360 speed grades (e.g., MC68360RC33L, MC68360RC40L) and the MC68EN360 variant. Signal mapping, power pin locations, and boundary-scan test access (IEEE 1149.1) are fully consistent across these parts. This allows direct substitution in existing designs when upgrading clock speed or selecting industrial-temperature versions, provided voltage and timing constraints remain within specification.
What debug interfaces are supported by the MC68360RC25L?
The MC68360RC25L supports Background Debug Mode (BDM) via dedicated BKPT, DSCLK, DSI, and DSO pins - enabling real-time instruction tracing, register inspection, and non-intrusive breakpoint setting without halting CPM operation. It also implements IEEE 1149.1 JTAG test access for boundary-scan testing of PCB interconnects. These interfaces are electrically and logically identical to those defined for the MC68360 family in Chapter 8 of the User's Manual and require no external debug adapter beyond standard BDM/JTAG cables.
MC68360RC25L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 241-BEPGA
- Series:
- M683xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- CPU32+
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 25MHz
- Co-Processors/DSP:
- Communications; CPM
- RAM Controllers:
- DRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- 10Mbps (1)
- SATA:
- -
- USB:
- -
- Voltage - I/O:
- 5.0V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 241-PGA (47.24x47.24)
- Additional Interfaces:
- SCC, SMC, SPI
MC68360RC25L FAQ
1.How can I place an order for MC68360RC25L through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68360RC25L on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68360RC25L reliable?
The price and inventory of MC68360RC25L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68360RC25L is usually 5 days.
3.What payment methods are accepted for MC68360RC25L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68360RC25L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68360RC25L?
MC68360RC25L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68360RC25L order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68360RC25L?
For technical support, including MC68360RC25L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68360RC25L requirements.
6.How does Aetrix verify that MC68360RC25L is sourced from the original manufacturer or authorized distributors?
All MC68360RC25L products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68360RC25L meets industry standards.
7.What is the process for return or replacement of MC68360RC25L?
All MC68360RC25L units undergo pre-shipment inspection (PSI). If there is an issue with MC68360RC25L, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68360RC25L part is unused and in its original packaging.
Return procedure for MC68360RC25L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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