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NXP Semiconductors MC68MH360RC25L
- Part No.:
- MC68MH360RC25L
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 241-BEPGA
- Datasheet:
-
MC68MH360RC25L.pdf
- Description:
- IC MPU M683XX 25MHZ 241PGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,319
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Product details
Overview
MC68MH360RC25L from Freescale Semiconductor is a 32-bit integrated microcontroller unit with embedded Communications Processor Module (CPM), CPU32+ core, and System Integration Module (SIM60), operating at 25 MHz with 4.5 MIPS performance, supporting up to 32-bit data bus width and 28+ address lines, used in industrial communications gateways and protocol-converged edge controllers.
For engineers reviewing the MC68MH360RC25L datasheet, MC68MH360RC25L pinout, MC68MH360RC25L application, or MC68MH360RC25L equivalent, key selection considerations include its quad SCC architecture, dual IDMA controllers, TDM time-slot assigner support, and MC68040 companion mode for hybrid processor systems.
Technical Context
The MC68MH360RC25L implements a split-processor architecture: the CPU32+ core handles general-purpose execution while the RISC-based CPM offloads serial protocol processing across seven channels - four SCCs, two SMCs, and one SPI - enabling concurrent HDLC, UART, Ethernet (via external PHY), and TDM traffic handling.
Its SIM60 provides system-level functions including clock synthesis, periodic interrupt timer, software watchdog, IEEE 1149.1 JTAG test access, and dynamic bus sizing for 8/16/32-bit memory interfaces, with slave mode enabling seamless integration as an intelligent peripheral to external M68040-family processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32+ - fully M68000 instruction set compatible, delivers 4.5 MIPS @ 25 MHz, supports byte-misaligned addressing and background debug mode |
| Max Clock Frequency | 25 MHz - static design enables zero-MHz to 25-MHz operation with no minimum frequency requirement |
| External Bus Width | Up to 32-bit data bus - dynamic bus sizing allows mixed 8-/16-/32-bit peripherals without glue logic |
| Serial Channels | 7 total: 4 SCCs (HDLC/SDLC/UART/BISYNC/transparent), 2 SMCs (UART/GCI/TDM), 1 SPI (master/slave/multimaster) |
| Memory Interface | Four CAS, four WE, one OE lines; boot chip select configurable for 8-/16-/32-bit memory; DRAM controller with RAS/CAS support |
| Timers & DMA | Four 16-bit or two 32-bit general-purpose timers; two independent DMAs with buffer chaining, auto-buffer, and 32-bit transfers |
| TDM Support | Dual TDM buses with time-slot assigner - supports T1, CEPT, ISDN BRI/PRI, PCM highway, and user-defined frame formats |
Pinout & Package
MC68MH360RC25L is housed in a 240-pin Pin Grid Array (PGA) package with 25-mil pitch, designed for high-density industrial PCB layouts requiring thermal and mechanical stability under extended temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | System Clock Input | Accepts external crystal or clock source; feeds on-chip clock synthesizer to generate CPU, CPM, and peripheral clocks |
| RSTOUT | Reset Output | Drives reset signal to external peripherals synchronized with internal reset assertion; open-drain capable |
| CS0–CS7 | Chip Select Outputs | Eight programmable chip selects with independent timing control for SRAM, EPROM, DRAM, and I/O devices |
| SCC1_Tx / SCC1_Rx | Serial Channel 1 Data | Differential or single-ended interface for SCC1 - configurable for Ethernet (with external transceiver), HDLC, or UART |
| SMC1_Tx / SMC1_Rx | Serial Management Controller 1 | Asynchronous or transparent serial interface; supports GCI and TDM channel connection via time-slot assigner |
| SPICLK / SPIMOSI / SPIMISO | SPI Bus Signals | Full-duplex synchronous interface supporting master/slave modes and multimaster arbitration on shared bus |
| ADDR[0:31] | Address Bus | 32-bit multiplexed address bus; at least 28 lines always active; supports dynamic address decoding for large memory maps |
| DATA[0:31] | Data Bus | 32-bit bidirectional data bus with dynamic sizing - automatically adapts to 8-/16-/32-bit peripheral transfers |
Key Features
| Feature | Design Value |
|---|---|
| Quad SCC Architecture | Four independent Serial Communication Controllers enable simultaneous multi-protocol operation - e.g., HDLC on SCC2, AppleTalk on SCC3, Ethernet on SCC1, and PPP on SCC4 - without CPU intervention |
| CPM Offload Engine | RISC-based Communications Processor Module executes protocol framing, CRC generation/checking, and BD management autonomously, freeing CPU32+ for application-layer tasks |
| MC68040 Companion Mode | Slave-mode operation allows MC68MH360RC25L to act as intelligent peripheral to MC68EC040/MC68040, handling DRAM control, interrupts, and bus arbitration while CPU32+ remains disabled |
| Dual TDM Time-Slot Assigner | Hardware-assisted routing of up to six serial channels (SCCs + SMCs) across two independent TDM buses with dynamic slot reassignment and independent Tx/Rx clocking |
| Glueless Memory Interface | Integrated DRAM controller, burst-mode support, and programmable chip-select timing eliminate need for external bus logic when interfacing to EPROM, Flash, SRAM, or DRAM SIMMs |
Applications
| Industrial Protocol Gateway | Telecom Access Node |
|---|---|
|
Use Scenario: Aggregating Modbus RTU, Profibus DP, and CANopen fieldbus traffic into TCP/IP backbone using dual Ethernet-capable SCCs and SPI-connected PHYs. IC Role / Device Role / Timing Role: MC68MH360RC25L serves as real-time protocol translation engine with CPM-managed HDLC framing and CPU32+-driven application layer bridging. Use Value: Eliminates need for external FPGA or ASIC by integrating full serial protocol stacks and memory management in one die, reducing BOM count and latency. |
Use Scenario: T1/E1 line card in remote DSLAM or PBX system, terminating multiple HDLC links and forwarding voice/data over TDM backplane using time-slot assigner. IC Role / Device Role / Timing Role: MC68MH360RC25L acts as TDM switch fabric controller with SMC-driven GCI interface and SCC-based signaling system #7 stack. Use Value: Enables hardware-accelerated time-slot switching and jitter-free frame alignment without external timing ICs or buffering logic. |
| Embedded Network Appliance | Legacy System Bridge |
|
Use Scenario: Secure firewall/router appliance with dual Ethernet ports (SCC1 + SCC2), SPI-connected crypto accelerator, and SMC-driven console UART for diagnostics. IC Role / Device Role / Timing Role: MC68MH360RC25L functions as packet-forwarding engine with CPM-managed receive/transmit descriptor queues and CPU32+-based ACL processing. Use Value: Achieves deterministic packet throughput up to 10 Mbps per port using dual IDMA channels and dual-buffer descriptor rings. |
Use Scenario: Retrofitting RS-232/422 legacy equipment with TCP/IP connectivity via SCC-driven PPP over UART and SPI-connected Wi-Fi module. IC Role / Device Role / Timing Role: MC68MH360RC25L operates as protocol converter with UART-to-TCP tunneling firmware and CPM-managed flow control. Use Value: Preserves existing hardware investment by embedding networking intelligence directly into legacy controller chassis without board redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar integrated communications controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68EN360RC25 | Includes integrated Ethernet MAC on SCC1; MC68MH360RC25L requires external PHY for Ethernet physical layer | MC68EN360RC25 supports direct 10BASE-T connection; MC68MH360RC25L targets designs where PHY selection must be flexible or cost-sensitive | Select MC68EN360RC25 if onboard Ethernet MAC reduces component count; choose MC68MH360RC25L for PHY-agnostic designs or legacy PHY reuse |
| MC68360RC25 | No "H" suffix - standard version without enhanced thermal or screening specs; identical architecture and pinout to MC68MH360RC25L | MC68360RC25 rated for commercial temp (0°C to 70°C); MC68MH360RC25L qualified for extended industrial range (–40°C to +85°C) | Choose MC68MH360RC25L for harsh-environment deployments; MC68360RC25 suffices for controlled lab or office environments |
Compared with MC68EN360RC25 and MC68360RC25, the MC68MH360RC25L provides extended temperature operation without integrated Ethernet MAC - offering design flexibility for thermally demanding industrial gateways where external PHY selection is critical.
Availability
MC68MH360RC25L is available at Aetrix Electronics and suitable for industrial protocol gateways, telecom access nodes, embedded network appliances, and legacy system bridges requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC68MH360RC25L 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) is a fabless semiconductor company specializing in embedded processing, connectivity, and analog solutions for automotive, industrial, and networking markets.
The MC68MH360RC25L belongs to the M68300 family QUICC™ product line, designed specifically for high-integration communications controller applications requiring autonomous serial protocol handling and real-time system control in resource-constrained environments.
FAQ
What is the operating temperature range for MC68MH360RC25L?
The MC68MH360RC25L is rated for operation from –40°C to +85°C, making it suitable for industrial and outdoor embedded applications where ambient conditions exceed commercial-grade limits. This extended temperature qualification is confirmed in Freescale's MC68360 Package/Frequency Availability table and distinguishes it from the standard MC68360RC25 variant. The device maintains full functional specification across this range without derating.
Does MC68MH360RC25L include an integrated Ethernet MAC?
No, the MC68MH360RC25L does not include an integrated Ethernet MAC. Unlike the MC68EN360RC25 variant, which adds Ethernet capability to SCC1, the MC68MH360RC25L requires an external PHY connected via SCC1's TTL or differential interface. This design preserves flexibility in PHY selection and supports legacy or cost-optimized implementations where MAC integration is unnecessary.
How many serial communication channels does MC68MH360RC25L support?
The MC68MH360RC25L supports seven serial communication channels: four Serial Communication Controllers (SCCs), two Serial Management Controllers (SMCs), and one Serial Peripheral Interface (SPI). Each SCC supports multiple protocols including HDLC, UART, BISYNC, and transparent bit-stream modes, while the SMCs handle UART, GCI, and TDM connections - all managed independently by the CPM.
Can MC68MH360RC25L operate as a slave to an external processor?
Yes, the MC68MH360RC25L supports slave mode operation, enabling it to function as an intelligent peripheral to external processors such as the MC68EC040 or MC68030. In MC68040 companion mode, the CPM and SIM60 remain fully active for memory control, interrupt handling, and serial processing while the CPU32+ core is disabled - allowing hybrid system architectures with shared bus resources.
What memory interface capabilities does MC68MH360RC25L provide?
The MC68MH360RC25L provides a flexible memory interface with four CAS, four WE, and one OE lines; programmable chip selects (CS0–CS7); boot chip select configurable for 8-/16-/32-bit memory; and integrated DRAM controller supporting RAS/CAS multiplexing. It enables glueless connection to EPROM, Flash, SRAM, and DRAM SIMMs - including parity-enabled configurations - with dynamic bus sizing for mixed-width memory subsystems.
MC68MH360RC25L 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
MC68MH360RC25L FAQ
1.How can I place an order for MC68MH360RC25L through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68MH360RC25L 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 MC68MH360RC25L reliable?
The price and inventory of MC68MH360RC25L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68MH360RC25L is usually 5 days.
3.What payment methods are accepted for MC68MH360RC25L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68MH360RC25L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68MH360RC25L?
MC68MH360RC25L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68MH360RC25L 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 MC68MH360RC25L?
For technical support, including MC68MH360RC25L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68MH360RC25L requirements.
6.How does Aetrix verify that MC68MH360RC25L is sourced from the original manufacturer or authorized distributors?
All MC68MH360RC25L 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 MC68MH360RC25L meets industry standards.
7.What is the process for return or replacement of MC68MH360RC25L?
All MC68MH360RC25L units undergo pre-shipment inspection (PSI). If there is an issue with MC68MH360RC25L, 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 MC68MH360RC25L part is unused and in its original packaging.
Return procedure for MC68MH360RC25L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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