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NXP Semiconductors MC68EN360CVR25L
- Part No.:
- MC68EN360CVR25L
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 357-BBGA
- Datasheet:
-
MC68EN360CVR25L.pdf
- Description:
- IC MPU M683XX 25MHZ 357BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MC68EN360CVR25L from Freescale Semiconductor is a 25 MHz QUICC™ (Quad Integrated Communication Controller) IC integrating CPU32+ core, System Integration Module (SIM60), and Communications Processor Module (CPM). It delivers 4.5 MIPS, supports up to 32-bit data/addr bus, includes four SCCs (with Ethernet option on SCC1), two SMCs, one SPI, and dual TDM channel support. Used in telecom gateways, industrial protocol bridges, and embedded communications controllers.
For engineers reviewing the MC68EN360CVR25L datasheet, MC68EN360CVR25L pinout, MC68EN360CVR25L application, or MC68EN360CVR25L equivalent, key selection criteria include its 240-pin PQFP package, 25 MHz max clock, slave mode capability for MC68040 companion use, and HDLC/UART/Ethernet serial protocol flexibility across seven serial channels.
Technical Context
The MC68EN360CVR25L implements a tightly coupled dual-module architecture: the CPU32+ core handles general-purpose execution while the RISC-based CPM offloads all serial communications processing via 224 buffer descriptors and dedicated IDMA engines. Its SIM60 provides system-level services including clock synthesis, periodic interrupt timer, IEEE 1149.1 JTAG test access, and bus arbitration with zero overhead for internal masters.
Serial channel configuration is hardware- and microcode-driven: four SCCs support HDLC/SDLC at up to 2 Mbps, UART, BISYNC, and Ethernet (SCC1 only); two SMCs handle UART/GCI/TDM interfacing; and the SPI operates in master/slave/multimaster modes. The time-slot assigner enables dynamic routing of up to six serial channels across two independent TDM buses with 1- or 8-bit resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32+ - fully M68000-compatible 32-bit core delivering 4.5 MIPS at 25 MHz; supports byte-misaligned addressing and background debug mode. |
| Max Clock Frequency | 25 MHz - defines maximum synchronous operation speed for CPU, CPM, and peripheral modules; validated over full industrial temperature range. |
| Serial Channels | 7 total: 4 SCCs + 2 SMCs + 1 SPI - each independently configurable; SCC1 supports optional IEEE 802.3 10-Mbps Ethernet PHY interface. |
| Memory Interface | Up to 32-bit data bus with dynamic sizing (8/16/32-bit); 32 address lines (≥28 always available); boot CS supports 8-/16-/32-bit memory initialization. |
| Timers & DMA | Four 16-bit (or two cascaded 32-bit) general-purpose timers; two independent DMAs supporting 32-bit transfers, buffer chaining, and auto-packing. |
| System Protection | SIM60 includes spurious interrupt monitor, double bus fault detection, software watchdog, and IEEE 1149.1 JTAG TAP for boundary scan and debug. |
| TDM Support | Dual TDM buses with time-slot assigner - supports T1, CEPT, ISDN basic/primary rate, PCM highway, and user-defined frame formats with independent TX/RX clocking. |
Pinout & Package
MC68EN360CVR25L is housed in a 240-pin Plastic Quad Flat Pack (PQFP) with 0.5 mm pitch, rated for –40°C to +85°C operation. The package supports surface-mount assembly and thermal dissipation suitable for industrial embedded applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | External Clock Input | Accepts 25 MHz crystal or oscillator signal; feeds on-chip clock synthesizer to generate CPU, CPM, and peripheral clocks. |
| RSTIN | Reset Input | Active-low asynchronous reset; initiates hardware reset sequence including register initialization and boot vector fetch from CS0. |
| CS0–CS7 | Chip Select Outputs | Eight programmable chip selects with configurable timing; CS0 used for boot memory, others for SRAM, DRAM, or peripherals. |
| SCC1_TXD / SCC1_RXD | SCC1 Serial Data I/O | Differential or single-ended interface for SCC1; when configured for Ethernet, connects to external PHY via MII-like signals (not internal MAC). |
| TDMA / RDMA | TDM Bus Signals | Time-division multiplexed data lines for TDM Bus 1; paired with TFS1/RFS1 (frame sync) and TCLK1/RCLK1 (clock) for synchronous TDM operation. |
| DTACK | Data Transfer Acknowledge | Indicates valid data on bus; used by external memory/peripherals to extend bus cycles; critical for glueless DRAM/EPROM interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| CPU32+ Core with BDM | Enables real-time debugging without halting system operation; eliminates need for external emulators during firmware development and field diagnostics. |
| CPM Offload Architecture | Decouples serial protocol handling (HDLC, UART, Ethernet framing) from CPU, freeing >70% of CPU bandwidth for application logic in high-throughput comms systems. |
| Slave Mode & MC68040 Companion Mode | Allows MC68EN360CVR25L to act as intelligent peripheral to MC68EC040/MC68040, enabling 22-MIPS hybrid systems without external glue logic or bus arbiters. |
| Dual Independent TDM Buses | Supports simultaneous T1 and ISDN PRI interfaces on separate buses, enabling multi-service access gateways with independent jitter control and clock domain isolation. |
| 224 Buffer Descriptors (BDs) | Provides scalable, descriptor-driven DMA for serial I/O; enables zero-copy packet forwarding and dynamic BD allocation without CPU intervention per frame. |
Applications
| Industrial Protocol Gateway | Telecom Access Node |
|---|---|
|
Use Scenario: Bridging Modbus RTU over RS-485 to TCP/IP Ethernet in factory automation networks. IC Role / Device Role / Timing Role: MC68EN360CVR25L acts as protocol translation engine: SMC1 handles Modbus UART, SCC1 runs Ethernet MAC layer, CPM manages BD-based packet reassembly. Use Value: Eliminates need for dual-CPU architecture; single-chip solution reduces BOM cost by 35% and board area by 40% vs. discrete MCU + Ethernet controller designs. |
Use Scenario: T1/E1 line card in remote DSLAM or PBX with integrated HDLC framing and CAS signaling. IC Role / Device Role / Timing Role: MC68EN360CVR25L serves as TDM controller: time-slot assigner routes DS0 channels to SCCs/SMCs; SIM60 provides precise 1.544/2.048 MHz clock derivation. Use Value: Supports hot-swappable line cards with deterministic sub-10 µs latency for CAS bit extraction and HDLC flag detection across all four SCCs. |
| Embedded Network Router | Legacy Serial-to-Fiber Bridge |
|
Use Scenario: Low-power edge router aggregating RS-232 point-of-sale terminals onto Gigabit Ethernet backbone. IC Role / Device Role / Timing Role: MC68EN360CVR25L functions as packet-forwarding engine: SPI loads routing tables from EEPROM, SCC2/SCC3 run PPP/HDLC over leased lines, CPM handles CRC-32 and frame alignment. Use Value: Achieves 98% line-rate forwarding at 2 Mbps aggregate serial throughput using CPM's hardware-accelerated BD chaining-no CPU polling required. |
Use Scenario: Converting legacy V.35 or X.21 synchronous links to fiber-optic SDH/SONET interfaces in utility SCADA networks. IC Role / Device Role / Timing Role: MC68EN360CVR25L operates as transparent serial mux: SCC4 runs X.21 physical layer, SMC2 drives GCI interface to optical transceiver, time-slot assigner maps DS0s to STM-1 payloads. Use Value: Maintains bit-transparent operation with <1-bit jitter accumulation across 128 TDM slots-critical for E1 circuit emulation in mission-critical infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar communications controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68360RC25 | Same CPU32+/SIM60/CPM architecture but in 240-pin PGA package; no Ethernet capability on SCC1; identical 25 MHz rating and industrial temp range. | Limited to non-Ethernet serial gateway roles (e.g., HDLC-only T1 mux); unsuitable where IEEE 802.3 PHY interface is required. | Select MC68360RC25 only if PGA mounting is mandatory and Ethernet functionality is unused; otherwise MC68EN360CVR25L offers superior integration. |
| MPC860T | PowerQUICC architecture with G2 core (66 MHz), integrated FEC Ethernet MAC, and enhanced CPM; lacks TDM time-slot assigner and dual TDM bus support. | Better suited for IP routing and TCP/IP offload; cannot replace MC68EN360CVR25L in TDM-centric applications like ISDN PRI or CAS-aware line cards. | Choose MPC860T for higher-speed Ethernet routing; retain MC68EN360CVR25L when TDM synchronization, HDLC bus, or AppleTalk legacy support is required. |
Compared with MC68360RC25, MC68EN360CVR25L adds Ethernet-capable SCC1 and PQFP packaging optimized for automated assembly; versus MPC860T, it retains deterministic TDM timing and legacy protocol microcode (DDCMP, V.14, Profibus RAM options) unavailable in PowerQUICC.
Availability
MC68EN360CVR25L is available at Aetrix Electronics and suitable for industrial protocol gateways, telecom access nodes, embedded network routers, and legacy serial-to-fiber bridges requiring stable component supply across extended lifecycle programs.
Supply support for MC68EN360CVR25L 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 MC68EN360CVR25L belongs to the QUICC™ family-designed specifically for integrated communications control in resource-constrained, real-time embedded systems requiring multiple synchronous/asynchronous serial protocols and deterministic TDM handling.
FAQ
What is the operating temperature range for the MC68EN360CVR25L?
The MC68EN360CVR25L is specified for industrial operation from –40°C to +85°C. This range is validated across all functional blocks-including CPU32+, CPM, SIM60, and serial interface drivers-and ensures reliable boot, buffer descriptor management, and TDM slot assignment under thermal stress typical in telecom chassis and factory-floor deployments.
Does the MC68EN360CVR25L include an integrated Ethernet MAC?
The MC68EN360CVR25L does not contain a full Ethernet MAC; however, SCC1 supports IEEE 802.3 10-Mbps baseband operation with external PHY interface. It handles Manchester encoding/decoding, preamble generation, CRC-32 calculation, and frame alignment in hardware-but requires an external transceiver (e.g., DP83932) for physical layer signaling.
Can the MC68EN360CVR25L operate without its CPU32+ core active?
Yes-the MC68EN360CVR25L supports slave mode, disabling the CPU32+ core while allowing full CPM operation. In this mode, external processors (e.g., MC68EC040) control the system bus, and the CPM continues managing all seven serial channels, IDMA transfers, and TDM routing autonomously-enabling hybrid high-performance architectures.
How many buffer descriptors does the CPM in the MC68EN360CVR25L support?
The CPM in the MC68EN360CVR25L supports exactly 224 buffer descriptors (BDs), allocated from its 2.5 KB dual-port RAM. These BDs are used for scatter-gather DMA across all serial channels, enabling zero-copy receive/transmit operations, chained BD lists for fragmented packets, and hardware-managed status updates without CPU polling.
Is the MC68EN360CVR25L pin-compatible with the standard MC68360EM25?
No-MC68EN360CVR25L is not pin-compatible with MC68360EM25. While both use 240-pin PQFP packages, the EN-series devices (like MC68EN360CVR25L) include additional Ethernet-related signals (e.g., ETXD0–3, ERXD0–3, ECRS, ECOL) routed to dedicated pins, altering the pin mapping versus non-Ethernet MC68360 variants.
MC68EN360CVR25L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 357-BBGA
- Series:
- M683xx
- Packaging:
- Bulk
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 357-PBGA (25x25)
- Additional Interfaces:
- SCC, SMC, SPI
MC68EN360CVR25L FAQ
1.How can I place an order for MC68EN360CVR25L through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68EN360CVR25L 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 MC68EN360CVR25L reliable?
The price and inventory of MC68EN360CVR25L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68EN360CVR25L is usually 5 days.
3.What payment methods are accepted for MC68EN360CVR25L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68EN360CVR25L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68EN360CVR25L?
MC68EN360CVR25L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68EN360CVR25L 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 MC68EN360CVR25L?
For technical support, including MC68EN360CVR25L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68EN360CVR25L requirements.
6.How does Aetrix verify that MC68EN360CVR25L is sourced from the original manufacturer or authorized distributors?
All MC68EN360CVR25L 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 MC68EN360CVR25L meets industry standards.
7.What is the process for return or replacement of MC68EN360CVR25L?
All MC68EN360CVR25L units undergo pre-shipment inspection (PSI). If there is an issue with MC68EN360CVR25L, 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 MC68EN360CVR25L part is unused and in its original packaging.
Return procedure for MC68EN360CVR25L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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