NXP Semiconductors SC68376BGVAB20

Overview

SC68376BGVAB20 from NXP Semiconductors (formerly Motorola) is a 16-bit microcontroller unit (MCU) featuring an integrated Time Processing Unit (TPU), CAN 2.0A controller, 20.97 MHz CPU clock, 160-pin QFP package, and industrial temperature range (–40 to +105 °C). It serves as a real-time control processor in automotive body electronics and industrial motion systems.

For engineers reviewing the SC68376BGVAB20 datasheet, SC68376BGVAB20 pinout, SC68376BGVAB20 application, or SC68376BGVAB20 equivalent, key selection criteria include TPU-based waveform generation, CAN bus interface capability, external memory bus support (16-bit data/24-bit address), analog input channel count (AN0–AN59), and industrial-grade thermal performance.

Technical Context

The SC68376BGVAB20 implements the M68300 core architecture with Harvard-style instruction/data buses and supports both internal ROM execution and external memory mapping via its 16-bit data bus (DATA0–DATA15) and 24-bit address bus (ADDR0–ADDR23). Its TPU provides 32 independent channels for precise timing, capture, compare, and PWM generation without CPU intervention.

It integrates a single CAN 2.0A controller (CANRX0/CANTX0 pins), dual serial peripheral interfaces (SPI with MOSI/MISO/SCK), UART (RXD/TXD), and 60-channel analog-to-digital subsystem with programmable reference (VRH/VRL) and multiple input multiplexing (AN0–AN59).

Key Specifications

Pinout & Package

SC68376BGVAB20 uses a 160-pin Quad Flat Package (QFP) per Case 864A-03 mechanical standard, measuring 27.9–28.1 mm × 27.9–28.1 mm × 3.35–3.85 mm height, with 0.65 mm lead pitch and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SC68376BGVAB20, MC68376BAMFT20 extends thermal range but removes factory ROM, while SC68336ACFT20 eliminates CAN support to reduce complexity - all three share identical TPU, memory interface, and analog subsystem capabilities.

Availability

SC68376BGVAB20 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, factory automation I/O hubs, and off-highway equipment monitors requiring stable component supply across long production lifecycles.

Supply support for SC68376BGVAB20 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The SC68376BGVAB20 belongs to the legacy M68300 family of real-time microcontrollers designed specifically for deterministic control in automotive powertrain and chassis systems.

FAQ

What is the maximum operating frequency of the SC68376BGVAB20?

The SC68376BGVAB20 operates at a maximum CPU clock frequency of 20.97 MHz, derived from its internal PLL configuration and crystal oscillator input (XTAL/EXTAL). This frequency is fixed for this variant and supports deterministic real-time execution with cycle-accurate TPU timing. The SC68376BGVAB20 does not support dynamic frequency scaling or user-adjustable clock multipliers beyond the factory-configured PLL settings.

Does the SC68376BGVAB20 include on-chip flash or ROM memory?

The SC68376BGVAB20 contains no on-chip executable memory - it relies entirely on external memory mapped via its 16-bit data and 24-bit address buses. The "B" prefix in the part number indicates a blank mask ROM version, meaning no factory-programmed firmware is present. All program code must be loaded from external EPROM, Flash, or SRAM connected to the SC68376BGVAB20's memory bus.

How many CAN interfaces does the SC68376BGVAB20 support?

The SC68376BGVAB20 integrates exactly one CAN 2.0A controller, exposed through dedicated CANRX0 and CANTX0 pins. It does not support CAN FD or multiple CAN channels. This single-controller implementation complies with ISO 11898-1 and supports bit rates up to 1 Mbps, making it suitable for legacy automotive networks and industrial fieldbus applications requiring basic CAN messaging.

What is the function of the TPU in the SC68376BGVAB20?

The TPU (Time Processing Unit) in the SC68376BGVAB20 is a hardware co-processor with 32 independent channels that perform timing-critical tasks autonomously - including input capture, output compare, PWM generation, quadrature decoding, and pulse counting - without CPU intervention. Each channel operates with nanosecond-level resolution, enabling precise motor control, encoder interfacing, and waveform synthesis in real-time systems.

Is the SC68376BGVAB20 pin-compatible with the MC68336 series?

Yes, the SC68376BGVAB20 is pin-compatible with the MC68336 in the 160-pin QFP package, as confirmed by Motorola's User's Manual Rev. 15 Oct 2000. Pin 1 and pin 160 are designated NC on both devices for compatibility, and shared signals (e.g., DATA0–DATA15, ADDR0–ADDR23, TPUCHx, ANx) occupy identical locations. However, SC68376BGVAB20 adds CANRX0 and CANTX0 pins not present on MC68336, which are routed to unused pins in the MC68336 footprint.