NXP Semiconductors MC9S12DG128CPVE

Overview

MC9S12DG128CPVE from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller with 128 KB on-chip Flash, 8 KB RAM, and integrated CAN 2.0B controller. It operates at up to 25 MHz bus frequency, supports 5V I/O, and features 10-bit ATD converter, PWM, SPI, SCI, and BDM debug interface. It targets automotive body control modules requiring robust real-time control and CAN networking.

For engineers reviewing the MC9S12DG128CPVE datasheet, MC9S12DG128CPVE pinout, MC9S12DG128CPVE application, or MC9S12DG128CPVE equivalent, key selection criteria include its 80-pin QFP package, 5V tolerance, CAN 0/1 channel support, PLL-based clock generation, and AEC-Q100 qualification for automotive use.

Technical Context

The MC9S12DG128CPVE implements the HCS12 CPU core with 16-bit data path, 24-bit address space, and instruction set backward-compatible with HC12. Its CRG block includes a PLL with selectable multiplication factors (1–32×), enabling stable bus clocks from 1–25 MHz using external crystals or oscillators.

It integrates dual CAN controllers (MSCAN0 and MSCAN1), each supporting full CAN 2.0B protocol with 16 message buffers, programmable bit timing, and loopback/self-test modes. The ATD module provides 16-channel, 10-bit conversion with configurable sample-and-hold and scan sequencing.

Key Specifications

Pinout & Package

MC9S12DG128CPVE is housed in an 80-pin Low-Profile Quad Flat Package (LQFP), 14 mm × 14 mm body, 0.5 mm pitch, RoHS-compliant (PVE suffix). Thermal resistance θ_JA = 45°C/W (JEDEC standard board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12DG128CPVE, MC9S12DJ128CPVE offers identical footprint and basic peripherals but omits Byteflight and restricts CAN0 pin assignment, while S912XDP512J0VLH delivers significantly more memory and performance at the cost of 5V I/O compatibility and added power design complexity.

Availability

MC9S12DG128CPVE is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN nodes, and embedded gateway applications requiring stable component supply, long lifecycle support, and AEC-Q100 qualification.

Supply support for MC9S12DG128CPVE 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 markets, with deep heritage in microcontroller innovation.

The MC9S12DG128CPVE belongs to the HCS12 family, designed specifically for cost-sensitive, high-reliability automotive applications demanding real-time control, CAN networking, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MC9S12DG128CPVE?

The MC9S12DG128CPVE supports a maximum bus frequency of 25 MHz, achieved via its on-chip PLL with programmable multiplication factor (1× to 32×) and external crystal or oscillator input. This frequency defines the timing base for all peripherals and CPU execution speed. The core runs at bus clock speed, and all timing specifications in the datasheet assume this 25 MHz maximum condition.

Does the MC9S12DG128CPVE support CAN FD?

No, the MC9S12DG128CPVE does not support CAN FD. It implements two fully compliant CAN 2.0B controllers (MSCAN0 and MSCAN1), which operate at up to 1 Mbps with standard 11-bit or extended 29-bit identifiers. CAN FD capability requires newer architectures such as S32K or SPC5 families; the MC9S12DG128CPVE is limited to classical CAN protocol only.

Is the MC9S12DG128CPVE pin-compatible with the MC9S12DT128CPVE?

No, the MC9S12DG128CPVE is not pin-compatible with the MC9S12DT128CPVE. While both are 80-pin QFP devices in the HCS12 family, their pin assignments differ significantly - particularly for CAN, SPI, and I/O multiplexing. For example, MC9S12DG128CPVE routes CAN0 to PJ6/PJ7, whereas MC9S12DT128CPVE assigns CAN0 to PM0/PM1. PCB layout and firmware must be redesigned for interchangeability.

What voltage regulator configuration does the MC9S12DG128CPVE require?

The MC9S12DG128CPVE requires a 5V supply on VDDX/VDDR pins and uses its internal voltage regulator to generate 2.5V for the core logic. VREGEN must be tied high to enable regulation. External 10 µF and 100 nF capacitors are required on VDDR and VDDA respectively, per Freescale's layout recommendations. No external 2.5V regulator is needed if VREGEN is asserted and input voltage remains within 4.5–5.5V.

How is flash memory secured on the MC9S12DG128CPVE?

Flash memory on the MC9S12DG128CPVE is secured using a 2-bit backdoor key mechanism. When enabled, this prevents unauthorized readout of Flash contents via BDM or other interfaces. Unsecuring requires either the correct 2-bit key or a mass erase command issued through BDM with proper security access sequence. Once secured, only a complete flash erase restores full access - protecting firmware intellectual property in production units.