NXP Semiconductors MC9S12DT256CCPV

Overview

MC9S12DT256CCPV from NXP (formerly Freescale Semiconductor) is a 16-bit HCS12 microcontroller featuring 256 KB on-chip Flash EEPROM, 12 KB RAM, and integrated CAN 2.0B controller, ATD converter, PWM, SPI, SCI, and I²C interfaces. It operates at up to 25 MHz bus clock with PLL-based clock generation and supports automotive-grade temperature range (–40°C to +85°C). It is used in engine control units, body electronics, and industrial motor control systems.

For engineers reviewing the MC9S12DT256CCPV datasheet, MC9S12DT256CCPV pinout, MC9S12DT256CCPV application, or MC9S12DT256CCPV equivalent, key selection criteria include its 112-pin LQFP package, 5V-tolerant I/O, dual ATD modules (10-bit, 16-channel), MSCAN compliance, and support for background debug via BDM interface.

Technical Context

The MC9S12DT256CCPV implements the HCS12 CPU core with 16-bit data path, 24-bit address space, and enhanced instruction set including multiply/divide and bit manipulation. Its memory architecture includes paged Flash with security byte, EEPROM emulation capability, and configurable wait states for external bus interfacing.

System-level timing is managed by the Clock and Reset Generator (CRG) block, supporting crystal, ceramic resonator, or external clock input with programmable PLL multiplication (×1 to ×32), self-clock mode, and fail-safe clock monitor. The device integrates two independent ATD converters (ATD0 and ATD1), each with 8/16 selectable channels, configurable sample-and-hold, and hardware trigger sources including ECT and SCI.

Key Specifications

Pinout & Package

The MC9S12DT256CCPV 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 on 2-layer PCB with 1-in² copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12DG256CPVE, the MC9S12DT256CCPV delivers full CAN capability and expanded I/O for complex vehicle networks; versus S912XDP512J1MALR, it offers proven field reliability and lower cost where 50 MHz performance and XGATE acceleration are unnecessary.

Availability

MC9S12DT256CCPV is available at Aetrix Electronics and suitable for automotive ECU development, industrial motor control systems, and off-road telematics requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MC9S12DT256CCPV 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Motorola's semiconductor division.

The MC9S12DT256CCPV belongs to the HCS12 family, designed specifically for cost-sensitive, high-reliability automotive control applications requiring integrated Flash, CAN, and analog peripherals in a single chip.

FAQ

What is the maximum bus clock frequency supported by the MC9S12DT256CCPV?

The MC9S12DT256CCPV supports a maximum bus clock frequency of 25 MHz, achieved via its on-chip Phase-Locked Loop (PLL) with programmable multiplication factor (×1 to ×32) from an external crystal or oscillator source. This frequency is specified under full operating conditions (4.5 V to 5.25 V, –40°C to +85°C) and enables deterministic real-time execution for automotive control loops. The MC9S12DT256CCPV's CRG block ensures stable clock generation with fail-safe monitoring.

Does the MC9S12DT256CCPV include a hardware CAN controller?

Yes, the MC9S12DT256CCPV integrates a fully compliant MSCAN (Motorola Scalable CAN) module supporting CAN 2.0B protocol with 16 message buffers, programmable acceptance filtering, and automatic retransmission. It features dedicated I/O pins (PM0–PM7) for up to four independent CAN channels and supports bit rates up to 1 Mbps. The MC9S12DT256CCPV's MSCAN is AEC-Q100 qualified and widely deployed in automotive network gateways and ECUs.

How many analog-to-digital converter (ATD) channels does the MC9S12DT256CCPV provide?

The MC9S12DT256CCPV includes two independent 10-bit ATD converters: ATD0 with 8 input channels (AN00–AN07) and ATD1 with 16 input channels (AN00–AN15), sharing some pins with Port AD. Both modules support hardware triggering from ECT, SCI, and PWM, and allow simultaneous sampling for synchronized measurements. The MC9S12DT256CCPV's ATD accuracy is ±1.5 LSB integral nonlinearity over temperature and supply voltage ranges.

Is the MC9S12DT256CCPV pin-compatible with other HCS12 derivatives?

No - the MC9S12DT256CCPV uses a 112-pin LQFP package and is not pin-compatible with 80-pin variants like MC9S12DG256CPVE or MC9S12DJ256CPVE. However, it shares the same HCS12 core architecture, memory map, and peripheral register layout with other DT-series devices, enabling software compatibility. Pin assignments for shared functions (e.g., SCI, SPI, ATD) follow consistent port mapping across the family, but physical pin count and location differ.

What debug interface does the MC9S12DT256CCPV support?

The MC9S12DT256CCPV supports the Background Debug Mode (BDM) interface via the BKGD pin, enabling single-wire in-circuit debugging, flash programming, and real-time register/memory inspection without halting peripheral operation. This interface is compatible with standard Freescale/NXP BDM tools (e.g., USB-ML-12, Cyclone Pro) and supports secure/unsecure transitions. The MC9S12DT256CCPV's BDM implementation complies with IEEE 1149.1 boundary-scan principles for production testability.