NXP Semiconductors MC68LK332ACPV16

Overview

MC68LK332ACPV16 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 16 MHz with −40°C to +85°C temperature range in 144-pin PQFP package and supports motion control applications requiring deterministic real-time I/O timing.

For engineers reviewing the MC68LK332ACPV16 datasheet, MC68LK332ACPV16 pinout, MC68LK332ACPV16 application, or MC68LK332ACPV16 equivalent, this page delivers verified technical context, validated pin functions, confirmed TPU channel count and clock architecture, exact package mapping, and two rigorously cross-checked alternative parts for industrial embedded control designs.

Technical Context

The MC68LK332ACPV16 implements a fully static CPU32 core with virtual memory support and background debugging mode. Its intermodule bus (IMB) connects standardized modules including SIM (with PLL-based clock synthesizer and watchdog), TPU (16 independent programmable channels), QSM (SCI + QSPI), and TPURAM (2-Kbyte dual-mode RAM).

It uses a 24-bit address/16-bit data IMB, supports external bus interface with 11 chip-selects, and integrates dedicated TPU microengine operating independently of CPU32. The device accepts 32.768-kHz crystal reference and generates up to 20.97-MHz system clock - though MC68LK332ACPV16 is rated for 16 MHz operation.

Key Specifications

Pinout & Package

MC68LK332ACPV16 is housed in a 144-pin PQFP (Plastic Quad Flat Package) with 0.5 mm lead pitch, JEDEC MS-026 compliant footprint, and exposed thermal pad not electrically connected. Pin functions are defined per Figure 3 (MC68332 144-Pin QFP Pin Assignments) in MC68332TS/D Rev. 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68LK332ACPV16, MC68332CFV16 offers baseline functionality at lower cost but forfeits pin remapping; MC68332ACFV20 delivers higher clock headroom while retaining identical PPWA advantages - both require separate validation of thermal and signal integrity margins.

Availability

MC68LK332ACPV16 is available at Aetrix Electronics and suitable for industrial motion control, automated test equipment, and power electronics gate driver interface applications requiring stable component supply across extended product lifecycles.

Supply support for MC68LK332ACPV16 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) designed high-reliability microcontrollers for automotive, industrial, and aerospace applications before its 2015 acquisition.

The MC68332 family - including MC68LK332ACPV16 - was engineered for deterministic real-time control in motion, power, and instrumentation systems where hardware-accelerated timing and robust system integration are critical.

FAQ

What is the core architecture of the MC68LK332ACPV16?

The MC68LK332ACPV16 features the CPU32 32-bit core - a fully static, Harvard-style architecture with virtual memory support, table-lookup/interpolate instructions, and background debugging mode. It executes instructions at up to 16 MHz and maintains register and memory contents during clock rate changes, making it suitable for deterministic real-time control applications where MC68LK332ACPV16 is deployed as the primary motion or power management controller.

Does the MC68LK332ACPV16 include on-chip RAM, and how is it used?

Yes, the MC68LK332ACPV16 integrates 2-Kbyte static RAM (TPURAM) that can operate either as general-purpose data memory or as microcode emulation RAM for the Time Processor Unit. This dual-mode capability allows developers to allocate memory dynamically based on application needs - for example, using TPURAM as buffer space during SCI communication or loading custom TPU microcode for specialized timing functions within the MC68LK332ACPV16's real-time subsystem.

How many independent timing channels does the MC68LK332ACPV16 support?

The MC68LK332ACPV16 supports 16 independent, software-configurable Time Processor Unit (TPU) channels accessible via TPUCH[15:0] pins. Each channel can perform any supported time function - including input capture, output compare, PWM generation, and quadrature decoding - without CPU intervention. This capability makes MC68LK332ACPV16 especially valuable in applications like multi-axis motor control where precise, concurrent timing operations are essential.

What serial interfaces are integrated into the MC68LK332ACPV16?

The MC68LK332ACPV16 integrates the Queued Serial Module (QSM), which combines an asynchronous Serial Communication Interface (SCI) and a synchronous Queued Serial Peripheral Interface (QSPI). SCI supports full-duplex UART communication (TXD/RXD), while QSPI handles master/slave SPI transactions (MISO/MOSI/SCK/PCS0–PCS3) - all mapped to the PQS[7:0] port. These interfaces enable MC68LK332ACPV16 to serve as a communication hub in distributed industrial systems.

Is the MC68LK332ACPV16 pin-compatible with other MC68332 variants in the 144-pin PQFP package?

Yes, MC68LK332ACPV16 shares identical pinout and package dimensions with other 144-pin PQFP MC68332 variants such as MC68332CFV16 and MC68332ACFV20, as confirmed by Figure 3 in MC68332TS/D Rev. 2. However, functional differences exist - notably MC68LK332ACPV16 includes enhanced PPWA for flexible peripheral pin assignment, whereas baseline variants lock certain functions to fixed pins. Layout reuse is possible, but firmware must validate pin configuration registers.