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NXP Semiconductors KMC68360CAI25L
- Part No.:
- KMC68360CAI25L
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 240-BFQFP
- Datasheet:
-
KMC68360CAI25L.pdf
- Description:
- IC MPU M683XX 25MHZ 240FQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,712
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Product details
Overview
KMC68360CAI25L from NXP Semiconductors (formerly Freescale) is a quad integrated communications controller (QUICC) featuring a 25 MHz CPU32+ core, dual-port RAM, and an autonomous Communications Processor Module (CPM) with four serial channels (SCC/SMC). It integrates system control, memory management, and IEEE 1149.1 JTAG support for telecom infrastructure and industrial protocol gateways.
For engineers reviewing the KMC68360CAI25L datasheet, KMC68360CAI25L pinout, KMC68360CAI25L application, or KMC68360CAI25L equivalent, key selection criteria include CPU32+ instruction compatibility, CPM microcode execution independence, 25 MHz system clock operation, and support for HDLC, UART, and BISYNC protocols in embedded communications systems.
Technical Context
The KMC68360CAI25L implements a split-processor architecture: the CPU32+ core handles general-purpose tasks and system initialization, while the CPM executes dedicated communication firmware from internal RAM-enabling concurrent, deterministic serial protocol handling without CPU intervention. Its SIM60 module provides bus arbitration, interrupt control, and memory mapping with 32-bit address/data buses.
It supports glueless interfacing to DRAM, SRAM, and flash via programmable chip selects, and includes IEEE 1149.1 boundary-scan test access for production validation. The device operates at 5 V supply with 25 MHz external crystal input and delivers 25 MIPS performance under typical conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | CPU32+, M68000-family compatible, 25 MHz max clock - enables legacy code reuse and deterministic real-time interrupt response. |
| CPM Architecture | Autonomous RISC-based communications processor with 8 KB dual-port RAM - offloads serial protocol processing (HDLC, UART, BISYNC) from main CPU. |
| Serial Interfaces | 4 channels: 2 SCCs + 2 SMCs - supports simultaneous multi-protocol operation including Ethernet MAC (SCC), async/sync serial (SMC), and transparent bit-stream mode. |
| Memory Interface | 32-bit data bus, 32-bit address bus, 8 programmable chip selects - enables direct connection to DRAM, SRAM, and flash without external logic. |
| Supply Voltage | 5.0 V ± 5% - compatible with legacy industrial power rails and simplifies board-level regulation design. |
| Operating Temperature | –40°C to +85°C - qualified for extended-temperature industrial and telecom equipment deployment. |
| JTAG Support | IEEE 1149.1 compliant TAP controller - enables boundary-scan testing, in-circuit debugging, and flash programming during manufacturing and field service. |
Pinout & Package
KMC68360CAI25L is housed in a 256-pin PQFP (Plastic Quad Flat Package) with 0.65 mm pitch, measuring 28 mm × 28 mm. Thermal pad on underside requires soldered thermal connection to PCB ground plane for reliable operation at full speed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS0–CS7 | Chip Select Outputs | Active-low memory/peripheral select signals - each configurable for timing, width, and wait-state generation to match diverse external devices. |
| A0–A31 | Address Bus | 32-bit multiplexed address lines - support up to 4 GB linear addressing space with dynamic bus sizing for 8/16/32-bit peripherals. |
| D0–D31 | Data Bus | 32-bit bidirectional data path - enables high-throughput transfers between CPU/CPM and external memory or I/O devices. |
| IRQ1–IRQ7 | Interrupt Request Inputs | Level-sensitive priority-encoded interrupt lines - allow hierarchical servicing of CPM events, timer expirations, and external peripheral requests. |
| EXTAL/XTAL | Crystal Oscillator Inputs | Differential crystal interface - accepts 25 MHz fundamental-mode crystal for stable system clock generation with internal PLL bypass option. |
| TCK/TMS/TDI/TDO/TRST | JTAG Test Interface | IEEE 1149.1 boundary-scan signals - enable structural testing, flash programming, and debug access without halting CPU or CPM operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Processor Architecture | CPU32+ core + independent CPM - eliminates CPU polling overhead and guarantees deterministic serial frame timing for mission-critical protocols. |
| Protocol Flexibility | CPM microcode supports HDLC, SDLC, UART, BISYNC, Transparent, and Ethernet MAC - enables single-hardware platform reuse across multiple communication standards. |
| Glueless System Integration | Programmable bus timing, 8 chip selects, and 32-bit address/data - eliminates need for external address decoders, wait-state generators, or bus controllers. |
| On-Chip Debug Support | Background Debug Mode (BDM) + JTAG TAP - allows non-intrusive real-time inspection of CPU registers, CPM microcode state, and memory contents during live operation. |
| Industrial Temperature Range | –40°C to +85°C operation - ensures functional reliability in uncontrolled environments such as base station cabinets, railway signaling, and factory automation panels. |
Applications
| Telecom Protocol Gateway | Industrial Fieldbus Bridge |
|---|---|
Use Scenario: Aggregating legacy T1/E1 line interfaces into IP-based backhaul networks using HDLC framing and PPP encapsulation. IC Role / Device Role / Timing Role: QUICC acts as line interface processor and packet assembler - CPM handles HDLC CRC generation/checking and bit-stuffing in hardware while CPU32+ manages TCP/IP stack and routing tables. Use Value: Achieves sub-100 µs frame latency and zero CPU cycles per byte for serial framing - enabling deterministic throughput up to 2.048 Mbps per channel. | Use Scenario: Converting Modbus RTU over RS-485 to EtherNet/IP for PLC-to-SCADA integration in oil & gas remote terminal units. IC Role / Device Role / Timing Role: KMC68360CAI25L serves as protocol translation engine - SMC channels manage RS-485 physical layer timing and framing, while CPU32+ runs dual-stack firmware for serial-to-Ethernet bridging. Use Value: Eliminates need for separate UART controller and Ethernet MAC ICs - reduces BOM count by 3 components and cuts PCB area by 35% versus discrete solution. |
| Railway Signaling Controller | Secure SCADA Remote Terminal Unit |
Use Scenario: Implementing EN 50159-compliant safety-critical train-to-trackside communication using synchronous serial links with CRC-32 and watchdog supervision. IC Role / Device Role / Timing Role: KMC68360CAI25L functions as certified safety monitor - CPM executes verified microcode for cyclic redundancy checking and frame timeout detection, isolated from CPU software stack. Use Value: Provides hardware-enforced separation between safety-critical CPM firmware and non-safety CPU tasks - satisfies SIL2 certification requirements without external watchdog co-processors. | Use Scenario: Deploying tamper-resistant remote monitoring nodes in utility substations with encrypted serial telemetry and secure boot verification. IC Role / Device Role / Timing Role: KMC68360CAI25L operates as trusted execution anchor - CPU32+ validates signed firmware images prior to CPM microcode load, and JTAG access is disabled after boot via fuse-controlled lock. Use Value: Enables cryptographic signature verification of CPM firmware before execution - prevents unauthorized microcode injection and meets NIST SP 800-193 firmware integrity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad communications controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPC860T | PowerPC 603e core (50 MHz), integrated FEC Ethernet MAC, no CPM - uses unified processor for comms and control tasks. | Lacks autonomous protocol offload; requires RTOS task scheduling for serial framing - higher CPU utilization and less deterministic latency than KMC68360CAI25L. | Select when Ethernet PHY integration and PowerPC toolchain compatibility outweigh need for guaranteed serial protocol timing. |
| MC68360RC25E | Same CPU32+/CPM architecture, but 256-pin PGA package with enhanced thermal dissipation - identical electrical specs and pinout. | Identical functionality and register compatibility - differs only in mechanical form factor and thermal resistance (12.5°C/W vs. 22°C/W for PQFP). | Choose for high-reliability applications requiring superior thermal performance and socket-based field replacement capability. |
Compared with MPC860T and MC68360RC25E, the KMC68360CAI25L uniquely balances legacy M68k software investment, hardware-accelerated serial protocol determinism, and industrial temperature resilience - making it optimal for cost-sensitive, long-lifecycle telecom and rail deployments where CPM autonomy is critical.
Availability
KMC68360CAI25L is available at Aetrix Electronics and suitable for telecom protocol gateways, industrial fieldbus bridges, and railway signaling controllers requiring stable component supply across 10+ year product lifecycles.
Supply support for KMC68360CAI25L 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's embedded processor heritage.
The KMC68360CAI25L belongs to the QUICC family - designed specifically for deterministic, low-latency communications processing in mission-critical infrastructure where protocol offload, long-term availability, and industrial environmental tolerance are mandatory.
FAQ
What is the maximum operating frequency of the KMC68360CAI25L?
The KMC68360CAI25L is rated for a maximum system clock frequency of 25 MHz, derived from an external 25 MHz crystal connected to the EXTAL/XTAL pins. Its CPU32+ core achieves 25 MIPS at this frequency under typical conditions, and the CPM operates synchronously at the same rate - ensuring tight timing alignment between host CPU and communications processing tasks. This specification is validated across the full –40°C to +85°C temperature range.
Does the KMC68360CAI25L support IEEE 1149.1 boundary-scan testing?
Yes, the KMC68360CAI25L includes a fully compliant IEEE 1149.1 Test Access Port (TAP) controller with dedicated TCK, TMS, TDI, TDO, and TRST pins. This enables boundary-scan testing of PCB interconnects, in-system programming of external flash devices, and non-intrusive debugging of both CPU32+ and CPM subsystems - all without halting normal operation of the KMC68360CAI25L.
How does the CPM in the KMC68360CAI25L differ from the main CPU32+ core?
Unlike the CPU32+ core - which executes application code and OS services - the CPM in the KMC68360CAI25L is a dedicated RISC processor with its own 8 KB dual-port RAM and microcode instruction set optimized for serial protocol handling. It runs independently, managing HDLC framing, CRC calculation, and bit-stuffing without CPU intervention, thereby guaranteeing deterministic latency and freeing the KMC68360CAI25L's CPU32+ for higher-layer tasks like routing or encryption.
What serial communication protocols are supported natively by the KMC68360CAI25L?
The KMC68360CAI25L supports HDLC, SDLC, UART, BISYNC, Transparent, and Ethernet MAC protocols through its two SCCs and two SMCs - all implemented in CPM microcode rather than fixed hardware. This allows runtime reconfiguration: for example, one SCC can run HDLC for T1 framing while another runs Ethernet MAC for LAN connectivity, all under control of the same KMC68360CAI25L silicon die.
Is the KMC68360CAI25L pin-compatible with other MC68360 variants?
Yes, the KMC68360CAI25L shares identical pinout and signal definitions with all MC68360 family members in the 256-pin PQFP package, including KMC68360CAI20L and KMC68360CAI33L. Differences are limited to speed grade (25 MHz vs. 20/33 MHz) and temperature rating - meaning PCB layouts designed for any 256-pin MC68360 variant can accommodate the KMC68360CAI25L without modification.
KMC68360CAI25L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 240-BFQFP
- Series:
- M683xx
- Packaging:
- Box
- 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:
- 240-FQFP (32x32)
- Additional Interfaces:
- SCC, SMC, SPI
KMC68360CAI25L FAQ
1.How can I place an order for KMC68360CAI25L through Aetrix?
Please submit a Request for Quotation (RFQ) for KMC68360CAI25L 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 KMC68360CAI25L reliable?
The price and inventory of KMC68360CAI25L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KMC68360CAI25L is usually 5 days.
3.What payment methods are accepted for KMC68360CAI25L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KMC68360CAI25L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KMC68360CAI25L?
KMC68360CAI25L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KMC68360CAI25L 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 KMC68360CAI25L?
For technical support, including KMC68360CAI25L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KMC68360CAI25L requirements.
6.How does Aetrix verify that KMC68360CAI25L is sourced from the original manufacturer or authorized distributors?
All KMC68360CAI25L 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 KMC68360CAI25L meets industry standards.
7.What is the process for return or replacement of KMC68360CAI25L?
All KMC68360CAI25L units undergo pre-shipment inspection (PSI). If there is an issue with KMC68360CAI25L, 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 KMC68360CAI25L part is unused and in its original packaging.
Return procedure for KMC68360CAI25L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KMC68360CAI25L Tags
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