NXP Semiconductors MC912DT128ACPVE

Overview

MC912DT128ACPVE from Freescale Semiconductor (formerly Motorola) is a 16-bit HCS12 microcontroller featuring 128 KB on-chip flash memory, 4 KB RAM, and integrated CAN 2.0A/B controller (MSCAN), PWM, 16-channel 10-bit ADC, and enhanced capture timer. It operates at up to 25 MHz core frequency with PLL clock multiplication and targets automotive body control, industrial motor control, and embedded CAN networks.

For engineers reviewing the MC912DT128ACPVE datasheet, MC912DT128ACPVE pinout, MC912DT128ACPVE application, or MC912DT128ACPVE equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases in CAN-based systems, and validated alternative parts for design continuity and sourcing resilience.

Technical Context

The MC912DT128ACPVE implements the HCS12 CPU core with 16-bit data/24-bit address bus, supporting background debug mode (BDM) for in-circuit emulation. Its MSCAN module provides full CAN 2.0A/B protocol compliance with 16 message buffers, programmable acceptance filtering, and automatic retransmission.

It integrates dual 10-bit analog-to-digital converters (ATD0/ATD1) with 16 input channels, configurable sample-and-hold timing, and conversion triggers via software, timer, or external event. The enhanced capture timer (ECT) supports input capture, output compare, pulse accumulation, and quadrature decoding with 8-bit and 16-bit counter modes.

Key Specifications

Pinout & Package

MC912DT128ACPVE is housed in a 112-pin PQFP (Plastic Quad Flat Package), case number 987, with 0.65 mm lead pitch and 20 mm × 20 mm body size. This RoHS-compliant package supports high-density PCB layouts and standard reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC912DT128ACPVE, MC9S12XDP512 offers 4× more flash and hardware offload for communications, while S912XDP512J0VLH provides assured supply and automotive qualification-both require firmware adaptation but eliminate obsolescence risk in new designs.

Availability

MC912DT128ACPVE is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, and off-highway equipment requiring stable component supply across extended product lifecycles.

Supply support for MC912DT128ACPVE 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 controllers for automotive and industrial markets, emphasizing robustness, real-time performance, and automotive-grade reliability.

The MC912DT128ACPVE belongs to the HCS12 family, engineered specifically for cost-sensitive, high-reliability CAN-based control systems in automotive body electronics and industrial automation where deterministic timing and mixed-signal integration are critical.

FAQ

What is the maximum operating frequency of the MC912DT128ACPVE?

The MC912DT128ACPVE achieves a maximum core frequency of 25 MHz using its on-chip phase-locked loop (PLL) to multiply the external crystal or oscillator input. This frequency is sustained across the full industrial temperature range (-40°C to +125°C) and 4.5–5.5 V supply, enabling deterministic real-time control in demanding applications such as motor drive timing loops and CAN message scheduling. The MC912DT128ACPVE datasheet specifies timing margins for all internal peripherals at this speed.

Does the MC912DT128ACPVE include a CAN controller?

Yes, the MC912DT128ACPVE integrates a fully compliant MSCAN controller supporting CAN 2.0A and 2.0B protocols at up to 1 Mbit/s. It features 16 configurable message buffers, programmable acceptance filtering (8-/16-/32-bit ID masks), automatic retransmission on error, and low-power wake-on-CAN functionality. This eliminates the need for an external CAN controller IC in designs like automotive body control modules or industrial gateways where the MC912DT128ACPVE serves as the primary CAN node.

What development tools are supported for the MC912DT128ACPVE?

The MC912DT128ACPVE is supported by Freescale's CodeWarrior Development Studio for HCS12, including full BDM (Background Debug Mode) integration for real-time debugging, flash programming, and register inspection. Hardware tools include the DEMO912DT128 evaluation board and USB-based BDM interfaces such as the U-Multilink. These tools enable rapid prototyping and validation of MC912DT128ACPVE-based firmware for CAN messaging, PWM control, and ADC acquisition workflows.

How much flash memory does the MC912DT128ACPVE have, and is it reprogrammable?

The MC912DT128ACPVE contains 128 KB of on-chip flash memory that is fully reprogrammable in-system via the BDM interface or application firmware using the built-in flash command sequencer. It supports sector erase, mass erase, and byte/word programming with hardware write protection controlled by the FPOPEN bit. This enables field firmware updates and secure code storage in production MC912DT128ACPVE deployments across automotive and industrial applications.

What is the ADC resolution and channel count on the MC912DT128ACPVE?

The MC912DT128ACPVE integrates two independent 10-bit analog-to-digital converters (ATD0 and ATD1), collectively supporting up to 16 analog input channels. Each ADC provides configurable sample-and-hold timing, multiple trigger sources (software, timer, external event), and result alignment options. This capability allows simultaneous voltage, current, and temperature sensing in MC912DT128ACPVE-based motor control and sensor fusion applications without external ADC components.