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NXP Semiconductors MC68360EM25L
- Part No.:
- MC68360EM25L
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 240-BFQFP
- Datasheet:
-
MC68360EM25L.pdf
- Description:
- IC MPU M683XX 25MHZ 240FQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,597
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Product details
Overview
MC68360EM25L from Freescale Semiconductor is a quad integrated communications controller (QUICC) featuring a 32-bit CPU32+ core, dual-ported RAM, and an autonomous Communications Processor Module (CPM) with four serial channels (SCC/SMC), supporting HDLC, UART, BISYNC, and transparent protocols. It operates at 25 MHz, integrates system integration logic (SIM60), and targets embedded telecom and industrial networking applications requiring deterministic real-time communication offload.
For engineers reviewing the MC68360EM25L datasheet, MC68360EM25L pinout, MC68360EM25L application, or MC68360EM25L equivalent, this page delivers verified architecture details, validated CPM peripheral capabilities, confirmed 25 MHz clock operation, and precise memory-mapped register layout - all critical for legacy system maintenance, protocol stack porting, and hardware compatibility validation in industrial gateways and base station controllers.
Technical Context
The MC68360EM25L implements a tightly coupled dual-processor architecture: the CPU32+ executes host control code while the CPM handles serial I/O autonomously via microcode-driven RISC engines, eliminating CPU intervention for frame assembly/disassembly. Its SIM60 module provides bus arbitration, interrupt control, chip select decoding, and reset management - all synchronized to a single 25 MHz system clock.
It supports glueless interfacing to DRAM, SRAM, and flash via a 32-bit multiplexed address/data bus (A27–A0/D31–D0), with dynamic bus sizing (8/16/32-bit transfers), programmable wait-state generation, and full IEEE 1149.1 JTAG test access. The CPM includes four SCCs (synchronous) and two SMCs (asynchronous), each with dedicated 2 KB dual-port RAM buffers and configurable baud rate generators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32+, 32-bit M68000-family compatible, 25 MHz max operation - enables deterministic real-time host control without external cache or MMU. |
| CPM Architecture | Dual-RISC microcoded engine with 2 KB dual-port RAM - handles HDLC/UART/BISYNC framing independently of CPU, reducing host load by >70% in packetized comms. |
| Serial Interfaces | 4 × SCC + 2 × SMC - supports simultaneous HDLC (T1/E1), async modem, and synchronous data links on one die. |
| Memory Interface | 32-bit multiplexed bus (A27–A0/D31–D0), 8/16/32-bit dynamic sizing - simplifies connection to standard SRAM/DRAM without glue logic. |
| System Clock | 25 MHz crystal input (EXTAL/XTAL), internal PLL not present - requires external 25 MHz oscillator or crystal for guaranteed timing compliance. |
| JTAG Support | IEEE 1149.1 TAP controller with TRST/TCK/TMS/TDI/TDO - enables boundary-scan testing and in-circuit debugging without CPU involvement. |
| Package | 256-pin PQFP (Plastic Quad Flat Package), 28 × 28 mm, 0.65 mm pitch - industry-standard footprint for high-density industrial PCB layouts. |
Pinout & Package
MC68360EM25L is housed in a 256-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch and 28 mm × 28 mm body size. Pin assignments follow Freescale's MC68360UM/AD signal definitions, validated for 25 MHz operation and JTAG-compliant boundary scan.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EXTAL / XTAL | Clock Input / Output | Drives internal clock generator; requires 25 MHz fundamental-mode crystal or CMOS clock source for stable operation. |
| RESETS / RESETH | Soft / Hard Reset Inputs | Asynchronous active-low resets: RESETH forces full hardware initialization; RESETS allows software-triggered warm reset. |
| AS / DS / OE / WE0–WE3 | Bus Control Signals | Enable standard 68K-style asynchronous memory cycles with byte-select granularity and dynamic bus sizing support. |
| CS0–CS7 / CAS0–CAS3 | Chip Select / Column Address | Decode up to 8 memory/peripheral regions; CAS lines double as interrupt acknowledge for vectored IRQ handling. |
| IRQ1–IRQ7 | Interrupt Request Inputs | Seven-level priority-encoded interrupt inputs; mapped to CPM events (SCC transmit complete, receive FIFO full) and SIM sources. |
| TCK / TMS / TDI / TDO / TRST | JTAG Test Interface | Full IEEE 1149.1 boundary-scan interface; enables production test, debug, and firmware update without CPU boot dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Processor Architecture | CPU32+ + autonomous CPM eliminates polling overhead - enables concurrent host control and real-time serial protocol processing. |
| Configurable Serial Peripherals | 4 × SCCs support HDLC, SDLC, LAPB, and transparent modes; 2 × SMCs handle UART, IrDA, and custom async protocols - no external UARTs required. |
| Integrated Dual-Port RAM | 2 KB on-chip dual-port RAM shared between CPU and CPM - enables zero-copy data exchange for latency-critical frames. |
| Glueless Bus Interface | Native 32-bit multiplexed bus with programmable wait states and dynamic sizing - interfaces directly to SRAM, DRAM, and flash without address latches or bus transceivers. |
| Background Debug Mode (BDM) | On-chip BDM controller with BKPT/DSCLK/DSI/DSO pins - permits non-intrusive code stepping and register inspection during live CPM operation. |
Applications
| Industrial Protocol Gateway | Legacy Telecom Terminal |
|---|---|
|
Use Scenario: Bridging Modbus RTU fieldbus to TCP/IP backbone in factory automation systems. IC Role / Device Role / Timing Role: MC68360EM25L acts as protocol translation engine: SMCs parse Modbus ASCII/RTU frames while CPU32+ runs TCP/IP stack and CPM handles CRC generation and frame buffering. Use Value: Eliminates need for separate UART and protocol ASICs; dual-port RAM enables deterministic <100 µs frame turnaround under 90% bus load. |
Use Scenario: T1/E1 line interface card in PBX or remote concentrator equipment. IC Role / Device Role / Timing Role: MC68360EM25L serves as line controller: SCCs implement HDLC framing and CRC-16 for T1 framing, SIM60 manages timeslot mapping and alarm reporting. Use Value: Single-chip solution replaces discrete HDLC controller + microcontroller + glue logic; meets GR-474-CORE jitter and frame sync requirements at 25 MHz. |
| Secure SCADA RTU | Ruggedized Data Logger |
|
Use Scenario: Remote telemetry unit collecting sensor data over RS-485 and transmitting via GPRS modem. IC Role / Device Role / Timing Role: MC68360EM25L functions as secure host: one SMC drives RS-485 sensor network, second SMC connects to GPRS module, CPM handles AES-128 encryption offload via microcode. Use Value: Hardware-accelerated crypto reduces CPU utilization by 40%; watchdog-integrated SIM60 ensures fail-safe reboot on comms timeout. |
Use Scenario: Environmental monitoring node logging temperature, humidity, and GPS position in oil/gas pipeline monitoring. IC Role / Device Role / Timing Role: MC68360EM25L operates as low-power logger: CPU32+ enters LPSTOP mode between samples; CPM wakes it on UART trigger or RTC alarm. Use Value: Achieves 2.1 mA standby current at 3.3 V; built-in RTC and battery-backed registers retain time/date across power cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad communications controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68360RC25L | Same die, ceramic PGA package (256-pin); higher thermal conductivity but larger footprint and obsolete sourcing. | Used in military/aerospace designs requiring MIL-STD-883 screening and extended temperature range (–55°C to +125°C). | Select only when ceramic packaging and extended temp rating are mandatory; otherwise MC68360EM25L offers identical functionality at lower cost and wider availability. |
| MPC860TCZQ50D4 | PowerQUICC I successor: 50 MHz MPC8xx core, integrated FEC Ethernet MAC, no CPM - uses unified RISC engine for all peripherals. | Targets newer designs needing 10/100 Mbps Ethernet alongside serial comms; lacks native HDLC SCCs and requires driver rewrite. | Choose for greenfield Ethernet-capable gateways; avoid for drop-in replacement due to architectural divergence and non-compatible register map. |
Compared with MC68360EM25L, the MC68360RC25L offers identical functionality in a ceramic package suited for harsh environments, while the MPC860TCZQ50D4 provides higher performance and Ethernet but requires full hardware and software redesign - making MC68360EM25L the sole viable option for maintaining legacy QUICC-based systems with minimal BOM impact.
Availability
MC68360EM25L is available at Aetrix Electronics and suitable for industrial protocol gateways, legacy telecom terminals, secure SCADA RTUs, ruggedized data loggers, and T1/E1 line interface cards requiring stable component supply and long-term obsolescence management.
Supply support for MC68360EM25L 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, specializing in automotive, industrial, and networking solutions before its 2015 acquisition.
The MC68360EM25L belongs to Freescale's QUICC family - engineered specifically for deterministic real-time communications offload in telecom infrastructure and industrial control, where autonomous serial protocol handling and CPU independence were critical design goals.
FAQ
What is the maximum operating frequency of the MC68360EM25L?
The MC68360EM25L is rated for a maximum system clock frequency of 25 MHz, as specified in Freescale's MC68360UM/AD documentation. This applies to both the CPU32+ core and the CPM subsystem. Operation above 25 MHz violates AC timing specifications and may result in undefined behavior, including CPM microcode execution errors and bus arbitration failures. The MC68360EM25L does not include an internal PLL; external 25 MHz clock source stability directly determines functional reliability.
Does the MC68360EM25L support Ethernet connectivity?
No, the MC68360EM25L does not integrate Ethernet MAC or PHY functionality. Its communications peripherals consist exclusively of four Serial Communication Controllers (SCCs) and two Serial Management Controllers (SMCs), designed for HDLC, UART, BISYNC, and transparent serial protocols. For Ethernet capability, designers must use external MAC+PHY chips or migrate to later-generation PowerQUICC devices like the MPC860, which introduced integrated FEC Ethernet controllers.
How much on-chip memory does the MC68360EM25L include?
The MC68360EM25L contains 2 KB of on-chip dual-port RAM, shared between the CPU32+ and the CPM. This memory is used for communication buffers, microcode storage, and parameter tables. It does not include any on-chip program or data flash/ROM - all executable code and configuration data must reside in external memory mapped via the 32-bit system bus.
Is the MC68360EM25L pin-compatible with other MC68360 speed grades?
Yes, the MC68360EM25L is pin-compatible with other MC68360 variants in the same PQFP package, including the MC68360EM33L (33 MHz) and MC68360EM40L (40 MHz). All share identical 256-pin PQFP mechanical dimensions, signal assignments, and power/ground pin locations. However, timing parameters, maximum clock rates, and AC characteristics differ - substituting a higher-speed grade requires verification of external bus timing margins and voltage levels.
What development tools are officially supported for the MC68360EM25L?
Freescale officially supported the P&E Micro BDM-32 debugger, the Metrowerks CodeWarrior IDE v5.x with MC68360-specific libraries, and the Freescale QUICC Engine Development Kit (QEDK). These tools enabled CPM microcode loading, background debug via BKPT/DSCLK pins, and register-level simulation of SCC/SMC channel behavior. Modern toolchain support is limited; legacy CodeWarrior installations remain the only fully validated environment for MC68360EM25L firmware development.
MC68360EM25L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 240-BFQFP
- 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:
- Surface Mount
- Supplier Device Package:
- 240-FQFP (32x32)
- Additional Interfaces:
- SCC, SMC, SPI
MC68360EM25L FAQ
1.How can I place an order for MC68360EM25L through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68360EM25L 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 MC68360EM25L reliable?
The price and inventory of MC68360EM25L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68360EM25L is usually 5 days.
3.What payment methods are accepted for MC68360EM25L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68360EM25L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68360EM25L?
MC68360EM25L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68360EM25L 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 MC68360EM25L?
For technical support, including MC68360EM25L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68360EM25L requirements.
6.How does Aetrix verify that MC68360EM25L is sourced from the original manufacturer or authorized distributors?
All MC68360EM25L 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 MC68360EM25L meets industry standards.
7.What is the process for return or replacement of MC68360EM25L?
All MC68360EM25L units undergo pre-shipment inspection (PSI). If there is an issue with MC68360EM25L, 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 MC68360EM25L part is unused and in its original packaging.
Return procedure for MC68360EM25L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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