NXP Semiconductors MC9S12DP256CCPV

Overview

MC9S12DP256CCPV from Freescale Semiconductor (now NXP) is a 16-bit HCS12 microcontroller featuring 256 KB on-chip Flash EEPROM, 12 KB RAM, and integrated CAN 2.0B controller, ATD converters, PWM, SPI, SCI, and I²C interfaces. It operates at up to 25 MHz bus speed with PLL-based clock generation and supports automotive-grade temperature range (–40°C to +85°C) in 112-pin LQFP package.

For engineers reviewing the MC9S12DP256CCPV datasheet, MC9S12DP256CCPV pinout, MC9S12DP256CCPV application, or MC9S12DP256CCPV equivalent, key selection criteria include its dual ATD modules (10-bit, 16-channel), 16-channel PWM with center-aligned mode, MSCAN compliance, background debug interface, and support for expanded external memory bus - all critical for real-time engine control, body electronics, and industrial motion systems.

Technical Context

The MC9S12DP256CCPV implements the HCS12 CPU core with 16-bit data path, 24-bit address space, and enhanced BDM interface for in-circuit debugging. Its CRG block supports multiple clock sources including crystal oscillator (1–8 MHz), internal RC, and PLL multiplication (up to 50 MHz core clock).

System-level integration includes two independent 10-bit ATD converters (ATD0 and ATD1) with simultaneous sampling capability, a 16-channel enhanced capture timer (ECT), and an MSCAN module compliant with ISO 11898-1:2003. The device uses a unified memory map with configurable protection and security features including flash security byte and unsecuring via backdoor access.

Key Specifications

Pinout & Package

MC9S12DP256CCPV is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch, case number 987, measuring 20 × 20 mm. Thermal resistance θ_JA is 35°C/W (JEDEC standard PCB layout). Pin assignments follow Figure 2-1 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 MC9S12DG256CPVE, the MC9S12DP256CCPV delivers certified CAN 2.0B communication and superior real-time determinism; versus S912XDP512J0VLH, it offers proven field reliability and lower toolchain licensing cost, though with less computational headroom.

Availability

MC9S12DP256CCPV is available at Aetrix Electronics and suitable for automotive engine control, industrial motor drives, and heavy-duty vehicle telematics requiring stable component supply across extended product lifecycles.

Supply support for MC9S12DP256CCPV 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 (acquired by NXP in 2015) was a leading designer of embedded processors and analog/mixed-signal ICs for automotive, industrial, and networking markets.

The MC9S12DP256CCPV belongs to the HCS12 family, engineered specifically for automotive real-time control applications demanding high reliability, CAN connectivity, and long-term supply stability under harsh environmental conditions.

FAQ

What is the maximum operating frequency of the MC9S12DP256CCPV?

The MC9S12DP256CCPV supports a maximum bus clock frequency of 25 MHz, derived from its internal PLL which multiplies the external crystal input (1–8 MHz). Core execution speed scales accordingly, enabling deterministic real-time performance for automotive control tasks. The PLL lock time and startup characteristics are specified in Table A-16 of the Device User Guide.

Does the MC9S12DP256CCPV include hardware security features?

Yes, the MC9S12DP256CCPV includes flash security via a dedicated security byte that disables read-out and programming when set. It also supports unsecuring through a documented backdoor key sequence over the BDM interface. These features prevent unauthorized firmware access while allowing authorized development and field updates.

Can the MC9S12DP256CCPV operate without an external crystal?

Yes, the MC9S12DP256CCPV can operate using its internal RC oscillator in self-clock mode (1–5.5 MHz range), though this reduces timing accuracy and disables PLL functionality. For production automotive applications requiring precise timing and CAN synchronization, an external crystal (typically 4–8 MHz) connected to EXTAL/XTAL is mandatory.

How many CAN interfaces does the MC9S12DP256CCPV support?

The MC9S12DP256CCPV integrates one MSCAN module compliant with CAN 2.0B protocol, supporting up to 15 message buffers and 1 Mbit/s baud rate. While some pins (e.g., PJ6/PJ7, PM0–PM7) are labeled with multiple CAN signal names, these reflect shared pin multiplexing - only one physical CAN controller is implemented on the MC9S12DP256CCPV die.

What is the purpose of the VREGEN pin on the MC9S12DP256CCPV?

The VREGEN pin on the MC9S12DP256CCPV enables the on-chip 5V voltage regulator. When pulled high, it activates internal regulation for VDDA (analog supply) and VDDR (I/O driver supply), eliminating the need for external regulators in many designs. Leaving VREGEN floating or low disables the regulator, requiring external 5V supplies on those rails.