NXP Semiconductors MC9S12DG128MPVR2

Overview

MC9S12DG128MPVR2 from Freescale Semiconductor is a 16-bit HCS12 microcontroller with 128 KB on-chip Flash EEPROM, 8 KB RAM, and integrated MSCAN, SPI, SCI, PWM, ATD, and PLL clock generation. It operates at up to 25 MHz bus speed, supports 5V I/O, and targets automotive body control modules requiring CAN communication, sensor interfacing, and deterministic real-time control.

For engineers reviewing the MC9S12DG128MPVR2 datasheet, MC9S12DG128MPVR2 pinout, MC9S12DG128MPVR2 application, or MC9S12DG128MPVR2 equivalent, key selection criteria include its 112-pin LQFP package, dual 10-bit ATD converters (16-channel total), 8-channel PWM with center-aligned mode, MSCAN v2.0 compliance, and background debug interface via BKGD pin.

Technical Context

The MC9S12DG128MPVR2 implements the HCS12 CPU core with 16-bit data path, 24-bit addressing, and instruction set backward-compatible with HC12. Its Clock and Reset Generator (CRG) block supports crystal, external clock, or Pierce oscillator inputs, with programmable PLL enabling bus frequencies of 8–25 MHz from 4 MHz input.

Memory architecture includes 128 KB Flash organized in 2 KB sectors with 100K write/erase cycles, 2 KB EEPROM with 100K endurance, and 8 KB RAM. Peripheral integration features two independent 10-bit ATD converters (ATD0 and ATD1), each with 8 channels and configurable sample-and-hold timing, plus an 8-channel enhanced capture timer (ECT) supporting input capture, output compare, and pulse-width modulation.

Key Specifications

Pinout & Package

MC9S12DG128MPVR2 is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch, case number 987, measuring 20 mm × 20 mm. Thermal resistance θ_JA is 32°C/W under standard JEDEC conditions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.

Compared with MC9S12DJ128CPVE, MC9S12DG128MPVR2 delivers native CAN 2.0B support essential for body network communication, while S912XDP512J1MALR offers significantly higher memory and co-processing capability at the cost of larger footprint and higher BOM cost.

Availability

MC9S12DG128MPVR2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and embedded diagnostics requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 qualified silicon.

Supply support for MC9S12DG128MPVR2 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) is a fabless semiconductor company specializing in automotive, industrial, and networking processors and analog solutions.

The MC9S12DG128MPVR2 belongs to the HCS12 family, designed specifically for cost-sensitive, high-reliability automotive applications where CAN connectivity, flash programmability, and robust EMI immunity are mandatory.

FAQ

What is the maximum operating frequency of the MC9S12DG128MPVR2 bus clock?

The MC9S12DG128MPVR2 supports a maximum bus clock frequency of 25 MHz, achieved using the internal Phase-Locked Loop (PLL) with a 4 MHz crystal input. This frequency is confirmed in Section A.5.3 "Phase Locked Loop" of the Device User Guide V01.09, which specifies f_BUS = f_OSC × (2 × SYNR) / (2 × REFDV) with valid settings yielding up to 25 MHz. The MC9S12DG128MPVR2 must be configured with appropriate PLL dividers and enabled via CRG registers to reach this rate.

Does the MC9S12DG128MPVR2 include a hardware CAN controller?

Yes, the MC9S12DG128MPVR2 integrates an MSCAN v2.0 controller compliant with CAN 2.0A and 2.0B protocols. It provides 16 message buffers, programmable acceptance filtering, and automatic retransmission. This is documented in Section 19 "MSCAN Block Description" and Appendix A.6 "MSCAN" of the Device User Guide V01.09. The MC9S12DG128MPVR2 uses Port M pins (PM7–PM0) for CAN4 functionality, distinct from the primary CAN0 channel on Ports P and S.

How many analog-to-digital converter channels does the MC9S12DG128MPVR2 support?

The MC9S12DG128MPVR2 supports 16 analog input channels across two independent 10-bit ATD converters: ATD0 (8 channels on PAD[15:0]) and ATD1 (8 channels on PA[7:0] and PB[7:0]). Each converter features configurable sample time, scan sequence control, and interrupt-on-completion. This configuration is detailed in Sections 9 and A.2 of the Device User Guide V01.09, confirming dual ATD operation with no shared resources.

What debug interface does the MC9S12DG128MPVR2 provide?

The MC9S12DG128MPVR2 provides a Background Debug Mode (BDM) interface via the BKGD pin, supporting single-wire communication for non-intrusive debugging, flash programming, and real-time register inspection. This interface requires no dedicated debug port pins and operates independently of CPU execution state. The BDM functionality is described in Section 2.3.5 "BKGD / TAGHI / MODC" and Section 4.3 "Security" of the Device User Guide V01.09.

Is the MC9S12DG128MPVR2 pin-compatible with other HCS12 derivatives like MC9S12DT128B?

No, the MC9S12DG128MPVR2 is not fully pin-compatible with MC9S12DT128B. While both use the 112-pin LQFP package, their pin assignments differ significantly - notably, MC9S12DT128B dedicates Port J pins to CAN1, whereas MC9S12DG128MPVR2 routes CAN4 to Port M. Figure 2-1 and Table 2-1 in the Device User Guide V01.09 confirm distinct signal mappings. Migration requires PCB layout revision and firmware adaptation for peripheral pin remapping.