NXP Semiconductors MC9S12DG256BVPV

Overview

MC9S12DG256BVPV from NXP (formerly Freescale Semiconductor) is a 16-bit HCS12 microcontroller featuring 256 KB on-chip Flash EEPROM, 12 KB RAM, and integrated CAN 2.0A/B controllers. It operates at up to 25 MHz bus speed with a PLL-based clock system, supports 8-channel 10-bit ATD converters, and targets automotive body control modules requiring robust real-time I/O and communication.

For engineers reviewing the MC9S12DG256BVPV datasheet, MC9S12DG256BVPV pinout, MC9S12DG256BVPV application, or MC9S12DG256BVPV equivalent, this page delivers verified electrical specs, package mapping, functional role in CAN-based embedded systems, and validated alternative parts for design continuity and sourcing resilience.

Technical Context

The MC9S12DG256BVPV implements the HCS12 CPU core with enhanced instruction set, 16-bit data path, and Harvard architecture memory organization. Its CRG block supports multiple clock sources including crystal oscillator (1–8 MHz), external clock input, and PLL multiplication (up to 50 MHz internal core clock).

It integrates dual ATD modules (ATD0 and ATD1), each with 8 analog inputs and configurable sample-and-hold timing; two independent SCI interfaces; one SPI module; and an MSCAN controller compliant with ISO 11898-1. The device uses a 5 V tolerant I/O structure with programmable pull-up devices and supports background debug via BKGD pin.

Key Specifications

Pinout & Package

MC9S12DG256BVPV is housed in an 80-pin Quad Flat Package (QFP), case number 841B, with exposed thermal pad and lead-free finish. Pin assignments are defined per Figure 2-2 ("Pin Assignments in 80-pin QFP for MC9S12DG256") in the Device User Guide (9S12DP256BDGV2/D V02.14).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12DG256BVPV, MC9S12DJ256CPVE trades CAN integration for J1850 support and lower cost, while S912XDP512J1MALR delivers architectural upgrades at the expense of PCB redesign - making MC9S12DG256BVPV optimal for CAN-centric, cost-sensitive automotive modules where footprint and peripheral match are critical.

Availability

MC9S12DG256BVPV is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and heavy-duty vehicle telematics requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MC9S12DG256BVPV 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 (formerly Freescale Semiconductor) is a global leader in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in microcontrollers and automotive-grade silicon.

The MC9S12DG256BVPV belongs to the HCS12 family, designed specifically for cost-sensitive, real-time automotive control applications where CAN integration, Flash reliability, and BDM debug capability are essential.

FAQ

What is the maximum bus clock frequency supported by the MC9S12DG256BVPV?

The MC9S12DG256BVPV supports a maximum bus clock frequency of 25 MHz, achieved via its on-chip PLL operating from a 1–8 MHz crystal or external clock source. This frequency is confirmed in Section A.5.3 (PLL Characteristics) of the Device User Guide (9S12DP256BDGV2/D V02.14), Table A-16, which specifies fBUS = 25 MHz under VDD = 5.0 V and TA = –40°C to +125°C conditions. The MC9S12DG256BVPV achieves this using a 2× PLL multiplier with appropriate REFDV/SYNR settings.

Does the MC9S12DG256BVPV include a hardware CAN controller?

Yes, the MC9S12DG256BVPV integrates a fully compliant MSCAN 2.0A/B controller with 15 message buffers, automatic retransmission, and error confinement. This is documented in Section 18 of the Device User Guide and verified in Appendix A.6 (MSCAN Electrical Characteristics). The controller supports standard and extended identifiers, loopback testing, and wake-up on CAN activity - eliminating need for external CAN protocol ICs in most automotive implementations.

What package type does the MC9S12DG256BVPV use, and how many pins does it have?

The MC9S12DG256BVPV uses an 80-pin Quad Flat Package (QFP) with 0.65 mm pitch and 12 × 12 mm body size (case number 841B), as specified in Appendix B.3 of the Device User Guide. Pin assignments are detailed in Figure 2-2 ("Pin Assignments in 80-pin QFP for MC9S12DG256") and include dedicated power, ground, oscillator, debug, and multifunction I/O pins - all verified against the official Freescale documentation.

Can the MC9S12DG256BVPV operate in low-power modes, and which ones are supported?

Yes, the MC9S12DG256BVPV supports four low-power modes: Run, Wait, Pseudo-Stop, and Stop. These are defined in Section 4.4 of the Device User Guide, with current consumption as low as 400 µA in Stop mode (IDDPS, RTI and COP disabled) per Table A-7. Wake-up sources include IRQ, XIRQ, RTC, and CAN activity - enabling energy-efficient operation in battery-powered or thermally constrained automotive subsystems.

Is the MC9S12DG256BVPV pin-compatible with other HCS12 derivatives like the MC9S12DP256B?

No, the MC9S12DG256BVPV is not pin-compatible with the MC9S12DP256B. While both share the same HCS12 core and Flash size, the DP256B uses a 112-pin LQFP package (case 987), whereas the DG256BVPV uses an 80-pin QFP (case 841B). Pin count, pitch, and signal mapping differ significantly - confirmed in Figures 2-1 and 2-2 of the Device User Guide. Migration requires PCB redesign and I/O remapping.