NXP Semiconductors MC68360ZP25VL

Overview

MC68360ZP25VL 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 256-pin PQFP package. It supports up to four independent serial channels (SCC/SMC), dual-port RAM (8 KB), and operates at 25 MHz with 3.3 V I/O and 5 V core supply. It is used in industrial protocol gateways requiring deterministic real-time packet handling and multi-protocol bridging.

For engineers reviewing the MC68360ZP25VL datasheet, MC68360ZP25VL pinout, MC68360ZP25VL application, or MC68360ZP25VL equivalent, key selection considerations include its integrated CPM offloading serial protocol processing from the main CPU, 25 MHz system clock timing budget, PQFP-256 mechanical footprint, and support for HDLC, SDLC, UART, and transparent bit-stream modes.

Technical Context

The MC68360ZP25VL implements a dual-processor architecture: the CPU32+ executes host control code while the CPM handles time-critical serial communications independently via microcode-driven RISC engines. Its SIM60 provides memory management, interrupt arbitration, chip select decoding, and clock generation with programmable PLL dividers.

It integrates four serial communication controllers (SCCs), two serial management controllers (SMCs), a parallel I/O port, and 8 KB of on-chip dual-port RAM accessible by both CPU and CPM. The device supports IEEE 1149.1 JTAG boundary-scan test access and operates across industrial temperature range (–40°C to +85°C).

Key Specifications

Pinout & Package

MC68360ZP25VL 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 standardized QUICC signal mapping for bus interface, peripheral I/O, clocking, and test access.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68360ZP25VL, the MC68360ZP33VL offers higher deterministic throughput at the cost of stricter power delivery and thermal design, while the MPC860TVR52D4 delivers modern Ethernet integration and performance uplift but mandates full hardware and software requalification.

Availability

MC68360ZP25VL is available at Aetrix Electronics and suitable for industrial protocol gateways, telecom edge nodes, point-of-sale terminals, and railway signaling interfaces requiring stable component supply and long-term obsolescence management.

Supply support for MC68360ZP25VL 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.

The MC68360 belongs to Freescale's QUICC family - engineered specifically for deterministic real-time communications in resource-constrained embedded systems where protocol offload and low-latency I/O are critical.

FAQ

What is the maximum operating frequency of the MC68360ZP25VL?

The MC68360ZP25VL is factory-specified and tested for reliable operation at up to 25 MHz system clock frequency. This rating applies to the CPU32+ core, CPM, and all on-chip peripherals under industrial temperature range (–40°C to +85°C) and nominal supply conditions (VCC = 5.0 V ± 5%, VCCIO = 3.3 V ± 10%). Exceeding this frequency may result in undefined behavior or timing violations in the MC68360ZP25VL's internal bus arbitration or CPM microcode execution.

Does the MC68360ZP25VL support JTAG debugging?

Yes, the MC68360ZP25VL fully implements IEEE 1149.1 JTAG boundary-scan functionality via dedicated TCK, TMS, TDI, and TDO pins. This enables in-circuit testing, flash programming, and real-time debug access to CPU registers and memory. The MC68360ZP25VL also supports Background Debug Mode (BDM) using BKPT/DSCLK/DSI/DSO signals as an alternative debug interface that does not require JTAG emulation hardware.

How much on-chip memory does the MC68360ZP25VL include?

The MC68360ZP25VL integrates 8 KB of dual-port static RAM accessible simultaneously by both the CPU32+ core and the Communications Processor Module (CPM). This RAM is mapped into the internal address space and used for packet buffers, microcode variables, and inter-processor message queues. No external RAM is required for basic CPM operation, though expansion is supported via CSx chip selects.

What serial protocols are natively supported by the MC68360ZP25VL's CPM?

The MC68360ZP25VL's CPM supports HDLC, SDLC, UART, BISYNC, Transparent, X.25, and LAPB protocols through its four Serial Communication Controllers (SCCs) and two Serial Management Controllers (SMCs). Each SCC includes dedicated hardware for CRC-16/32 generation, bit-stuffing, flag detection, and frame synchronization - eliminating software overhead for these functions in the MC68360ZP25VL.

Is the MC68360ZP25VL pin-compatible with other MC68360 variants?

Yes, all MC68360 variants in the PQFP-256 package - including MC68360ZP25VL, MC68360ZP33VL, and MC68360ZP40VL - share identical pinout, signal assignment, and mechanical footprint. Differences are limited to speed grade, AC electrical specifications, and internal fuse settings; no PCB layout change is required when upgrading within the same package variant.