NXP Semiconductors MC68376BAVAB25

Overview

MC68376BAVAB25 from NXP (formerly Motorola) is a 32-bit microcontroller unit (MCU) featuring a CPU32 core, integrated Time Processing Unit (TPU), CAN 2.0A/B controller, 160-pin QFP package, and operation up to 25 MHz. It serves as a real-time control processor in automotive powertrain and industrial motion systems requiring deterministic I/O timing and robust serial communication.

For engineers reviewing the MC68376BAVAB25 datasheet, MC68376BAVAB25 pinout, MC68376BAVAB25 application, or MC68376BAVAB25 equivalent, key selection criteria include TPU channel count (16 channels), CAN interface presence (dual CANRX0/CANTX0), operating temperature range (–40°C to +105°C), and mask ROM configuration (blank, field-programmable).

Technical Context

The MC68376BAVAB25 implements the CPU32 instruction set architecture with 32-bit data and address buses, supporting external memory expansion up to 16 MB. Its on-chip TPU provides autonomous timing control for PWM generation, input capture, and output compare with 16 dedicated channels and 32 KB of dedicated RAM.

It integrates a full CAN 2.0A/B-compliant controller with message object buffers, programmable bit timing, and error handling logic. The device supports multiplexed 16-bit data/24-bit address bus operation, synchronous serial peripheral interface (SPI), and UART with programmable baud rate generation.

Key Specifications

Pinout & Package

MC68376BAVAB25 uses a 160-pin QFP package (Case 864A-03) with 0.65 mm lead pitch, 28 mm × 28 mm body size, and standard JEDEC MS-026 footprint. Pin 1 and pin 160 are NC (no connect) to ensure pin compatibility with MC68336 Revision D+ devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MC68376BACFT20 and MC68376BAVFT20, the MC68376BAVAB25 delivers higher real-time throughput via its 25 MHz clock while maintaining identical TPU, CAN, and debug capabilities-making it optimal for latency-critical engine control loops.

Availability

MC68376BAVAB25 is available at Aetrix Electronics and suitable for automotive powertrain control, industrial servo drives, heavy-duty vehicle telematics, and power generation monitoring requiring stable component supply across extended temperature ranges.

Supply support for MC68376BAVAB25 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 (originally Motorola Semiconductor) is a global leader in secure connectivity solutions for automotive, industrial, and IoT applications, with deep heritage in microcontroller innovation since the 1970s.

The MC68376 belongs to the M68300 family of high-integration microcontrollers designed specifically for deterministic real-time control in harsh environments-emphasizing TPU autonomy, CAN interoperability, and field-proven reliability.

FAQ

What is the maximum operating frequency of the MC68376BAVAB25?

The MC68376BAVAB25 is rated for a maximum system clock frequency of 25 MHz, verified across its full –40°C to +105°C operating temperature range. This frequency enables sub-40 ns instruction cycle times for time-critical control tasks. The device uses an external crystal (XTAL/EXTAL) or oscillator to drive the on-chip PLL, and timing specifications in the official MC68376 datasheet confirm stable operation at 25 MHz under worst-case voltage and temperature conditions. MC68376BAVAB25 does not support overclocking beyond this specification.

Does the MC68376BAVAB25 include an integrated CAN controller?

Yes, the MC68376BAVAB25 integrates a single CAN 2.0A/B-compliant controller with dedicated CANRX0 and CANTX0 pins. It supports standard and extended frame formats, programmable bit timing (up to 1 Mbps), and 16 message object buffers with hardware acceptance filtering. No external CAN protocol controller is needed-only a physical-layer transceiver (e.g., TJA1040) is required for bus connection. This capability is confirmed in the MC68376 User's Manual Rev. 15 Oct 2000 and applies specifically to the MC68376BAVAB25 variant.

What is the purpose of the TPU in the MC68376BAVAB25?

The Time Processing Unit (TPU) in the MC68376BAVAB25 is a programmable, autonomous peripheral with 16 I/O channels and 32 KB of dedicated RAM. It executes timing-critical functions-including PWM generation, input capture, output compare, and quadrature decoding-without CPU intervention. Each channel runs microcode stored in TPU RAM, enabling precise, jitter-free waveforms essential for motor control and engine management. The TPU is a defining feature of the MC68376BAVAB25 and differentiates it from the base MC68336.

Is the MC68376BAVAB25 pin-compatible with the MC68336?

Yes, the MC68376BAVAB25 is pin-compatible with the MC68336 in the 160-pin QFP package, as confirmed by Motorola's User's Manual (Rev. 15 Oct 2000, Figure B-2). Pins 1 and 160 are designated NC on both devices to ensure mechanical and electrical compatibility. However, functional differences exist: MC68376BAVAB25 adds CANRX0/CANTX0 and additional TPU I/O, while MC68336 lacks CAN and has fewer TPU resources. PCBs designed for MC68336 can accept MC68376BAVAB25 with no layout changes, but firmware must leverage the enhanced features.

What development tools support the MC68376BAVAB25?

The MC68376BAVAB25 is supported by Motorola's ColdFire™/CPU32 development ecosystem, including the P&E Micro BDM multilink debugger, CodeWarrior Development Studio v5.x for HC12/CPU32, and the M68376EVB evaluation board. On-chip BDM interface signals (BKPT/DSCLK, IPIPE/DSO, IFETCH/DSI) enable real-time tracing and breakpoint debugging. NXP maintains legacy documentation and toolchain archives, and third-party vendors like ByteCraft provide ANSI C compilers targeting the CPU32 core. All tool support references the exact MC68376BAVAB25 part number and its mask ROM blank configuration.