NXP Semiconductors MC68360ZP25L

Overview

MC68360ZP25L from Freescale Semiconductor is a quad integrated communications controller (QUICC) combining a 32-bit CPU32+ core, System Integration Module (SIM60), and Communications Processor Module (CPM) in a single LQFP-160 package. It delivers 25 MHz maximum CPU clock speed, dual-port RAM (4 KB), and supports up to four independent serial channels including HDLC, UART, and transparent modes - deployed in industrial protocol gateways and legacy telecom line cards.

For engineers reviewing the MC68360ZP25L datasheet, MC68360ZP25L pinout, MC68360ZP25L application, or MC68360ZP25L equivalent, key selection criteria include CPM-based offload capability for serial protocol handling, glueless bus interface compatibility with 32-bit M68000-family peripherals, and support for deterministic real-time response in time-critical communication stacks.

Technical Context

The MC68360ZP25L integrates a CPU32+ core executing M68000-family instructions at up to 25 MHz, with on-chip 4 KB dual-port RAM shared between CPU and CPM. Its SIM60 provides memory management, interrupt control, and system bus arbitration, while the CPM handles serial communications independently via RISC microcode - enabling concurrent protocol processing without CPU intervention.

It supports multiple bus configurations including master/slave operation, dynamic bus sizing (8/16/32-bit), and synchronous/asynchronous transfers. The device implements IEEE 1149.1 JTAG test access port and includes background debug mode (BDM) for in-circuit development, with dedicated signals for instruction trace and breakpoint control.

Key Specifications

Pinout & Package

LQFP-160 package (24 mm × 24 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad. Pin assignment validated per MC68360UM/AD Rev. 4 (2001), Section 2.1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar integrated communications controller applications.

Compared with MC68360ZP25L, the MC68360ZP33L offers higher throughput at the cost of increased power and timing sensitivity, while the MPC860TBCZQ50D4 shifts to PowerPC architecture and Ethernet-centric I/O - making it unsuitable as a drop-in replacement but viable for greenfield designs prioritizing network connectivity over serial legacy support.

Availability

MC68360ZP25L is available at Aetrix Electronics and suitable for industrial protocol gateways, legacy telecom line cards, and ruggedized data loggers requiring stable component supply and long-term obsolescence management.

Supply support for MC68360ZP25L 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 applications before its 2015 acquisition.

The MC68360ZP25L belongs to Freescale's QUICC family - engineered specifically to replace discrete serial controllers and glue logic in M68K-based communications equipment, emphasizing protocol offload, deterministic timing, and backward-compatible bus interfacing.

FAQ

What is the maximum operating frequency of the MC68360ZP25L?

The MC68360ZP25L is rated for a maximum CPU clock frequency of 25 MHz, as specified in the Freescale MC68360UM/AD Rev. 4 datasheet, Section 10. This applies to the CPU32+ core; the CPM operates synchronously at the same clock rate, and all timing parameters (e.g., bus cycle durations, SCC bit rates) are derived from this base frequency. Exceeding 25 MHz violates the device's AC specifications and may cause undefined behavior in register access or serial framing.

Does the MC68360ZP25L support JTAG boundary-scan testing?

Yes, the MC68360ZP25L includes a fully compliant IEEE 1149.1 Test Access Port (TAP) with dedicated TCK, TMS, TDI, TDO, and TRST pins, documented in Section 8 of the MC68360UM/AD manual. This enables boundary-scan testing of PCB interconnects and in-system programming of external flash memory via the CPM or CPU32+ - critical for manufacturing test coverage in telecom and industrial control boards using the MC68360ZP25L.

How does the CPM in the MC68360ZP25L reduce CPU overhead for serial communications?

The CPM in the MC68360ZP25L is a dedicated RISC processor with its own instruction ROM and access to the 4 KB dual-port RAM, allowing it to autonomously handle HDLC framing, CRC calculation, bit stuffing, and interrupt generation - all without CPU32+ intervention. This offload capability means the MC68360ZP25L can sustain four concurrent serial links at full rate while leaving the CPU free for application-layer tasks like protocol translation or security processing.

Is the MC68360ZP25L pin-compatible with other members of the MC68360 family?

Yes, the MC68360ZP25L shares identical pinout and package (LQFP-160) with other speed grades in the same ZP suffix series, including MC68360ZP33L and MC68360ZP20L. All ZP variants use the same mechanical footprint, signal mapping, and power/ground pin assignments - enabling frequency-scaling upgrades or downgrades on existing PCBs without layout changes, provided timing constraints and voltage tolerances are met.

What development tools are supported for firmware development on the MC68360ZP25L?

Freescale officially supported CodeWarrior Development Studio for ColdFire/MC68K, along with standalone C compilers (e.g., Diab C), assembler toolchains, and BDM-based debug probes (e.g., P&E Micro USB-ML-MON08). The MC68360ZP25L's Background Debug Mode (BDM) interface enables real-time register inspection, flash programming, and non-intrusive breakpoints - essential for developing and validating CPM microcode and CPU32+ application firmware targeting the MC68360ZP25L.