NXP Semiconductors MC68332ACAG25

Overview

MC68332ACAG25 from Freescale Semiconductor (formerly Motorola) is a 32-bit modular microcontroller featuring CPU32 core, System Integration Module (SIM), Time Processor Unit (TPU), Queued Serial Module (QSM), and 2-Kbyte TPURAM. It operates at 25 MHz system clock, supports –40°C to +85°C industrial temperature range, and integrates 16 TPU channels for real-time motion control in embedded automation systems.

For engineers reviewing the MC68332ACAG25 datasheet, MC68332ACAG25 pinout, MC68332ACAG25 application, or MC68332ACAG25 equivalent, key selection criteria include its static CPU32 architecture, PLL-based clock synthesis, TPU offloading capability, and 132-pin PQFP package with dual-function I/O ports for deterministic timing-critical tasks.

Technical Context

The MC68332ACAG25 implements a fully static CPU32 core with virtual memory support and background debugging mode, enabling zero-wait-state operation across variable clock rates. Its intermodule bus (IMB) connects standardized modules-SIM, TPU, QSM, and TPURAM-allowing independent peripheral execution without CPU intervention.

System clocking uses an on-chip PLL synthesizer with external crystal (XTAL/EXTAL) or oscillator input; the MC68332ACAG25 is rated for 25 MHz maximum system frequency. The TPU executes time-critical functions-including PWM generation, input capture, and quadrature decoding-via 16 dedicated microengine-controlled channels, each assignable to any supported timing function.

Key Specifications

Pinout & Package

MC68332ACAG25 is housed in a 132-pin PQFP (Plastic Quad Flat Package) with 0.65 mm lead pitch, JEDEC MS-026 compliant footprint, and exposed thermal pad for enhanced thermal dissipation in continuous-duty embedded systems.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit real-time microcontroller applications.

Compared with MC68332GCFC20 and MC9328MX1, the MC68332ACAG25 uniquely delivers verified 25 MHz TPU execution with factory-trimmed PLL stability and PPWA-enhanced I/O drive strength-making it the sole option for new designs requiring guaranteed sub-microsecond timing fidelity in industrial motion control.

Availability

MC68332ACAG25 is available at Aetrix Electronics and suitable for industrial motion control, programmable logic controllers, automated test equipment, and power electronics control requiring stable component supply across extended product lifecycles.

Supply support for MC68332ACAG25 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) pioneered high-integration microcontrollers for industrial real-time control, emphasizing modularity, deterministic timing, and long-term supply assurance.

The MC68332 family was designed specifically for deterministic embedded control applications-where CPU offload, hardware-accelerated timing, and robust I/O integrity outweigh raw computational throughput.

FAQ

What is the maximum guaranteed operating frequency of the MC68332ACAG25?

The MC68332ACAG25 is factory-tested and specified for reliable operation up to 25 MHz system clock frequency. This rating includes full functionality of the CPU32 core, TPU, QSM, and SIM under worst-case voltage (4.5 V to 5.5 V) and temperature (–40°C to +85°C) conditions, with all timing margins met per the MC68332TS/D Rev. 2 specification.

Does the MC68332ACAG25 include on-chip flash memory?

No, the MC68332ACAG25 does not contain on-chip flash memory. It relies on external boot ROM (selected via CSBOOT) and external program memory mapped through its 24-bit address bus. On-chip memory consists solely of 2-Kbyte TPURAM-configurable as general-purpose SRAM or TPU microcode emulation RAM-as documented in Section 7 of the MC68332TS/D datasheet.

How many independent TPU channels does the MC68332ACAG25 support?

The MC68332ACAG25 supports 16 independent TPU channels (TPUCH[15:0]), each capable of executing any supported time function-including input capture, output compare, PWM generation, quadrature decode, and pulse accumulation-without CPU intervention, as confirmed in Section 5.1 of the MC68332TS/D technical summary.

What package type and pin count does the MC68332ACAG25 use?

The MC68332ACAG25 uses a 132-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch, matching the pinout shown in Figure 2 of the MC68332TS/D Rev. 2 datasheet. This package includes dedicated TPU channel pins, dual-function GPIO ports (PE, PF, PC), and full external bus interface signals (ADDR[23:0], DATA[15:0], AS, R/W, etc.).

Is the MC68332ACAG25 pin-compatible with other MC68332 variants?

Yes, the MC68332ACAG25 shares identical 132-pin PQFP pinout and electrical characteristics with all other MC68332 variants in the same package type (e.g., MC68332CFC20, MC68332GCFC20), including identical signal assignments for ADDR, DATA, TPUCH, PQS, and control pins-enabling direct replacement within the same socket footprint when thermal and timing budgets allow.