NXP Semiconductors MC912D60ACFU8

Overview

MC912D60ACFU8 from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller featuring 60 KB on-chip Flash, 2 KB RAM, 512-byte EEPROM, 16-channel 10-bit ADC, dual CAN 2.0A/B controllers (MSCAN), and enhanced capture timer. It operates at up to 8 MHz core frequency with PLL support and targets automotive body control modules and industrial embedded systems requiring robust real-time I/O and CAN networking.

For engineers reviewing the MC912D60ACFU8 datasheet, MC912D60ACFU8 pinout, MC912D60ACFU8 application, or MC912D60ACFU8 equivalent, key selection criteria include its 112-pin TQFP package, integrated MSCAN peripherals, background debug mode (BDM) support, and qualification for automotive temperature range (–40°C to +125°C).

Technical Context

The MC912D60ACFU8 implements the HCS12 CPU core with 16-bit data path, 24-bit addressing, and full instruction set compatibility with HC12. Its memory subsystem includes segmented Flash with block protection, EEPROM with selective write capability, and configurable wait states for external bus interfacing.

Real-time operation is enabled by multiple independent peripherals: two MSCAN controllers supporting standard and extended frames, a 16-bit enhanced capture timer with input capture/output compare/pulse accumulation modes, and a flexible PWM module with left- and center-aligned outputs. Clock generation uses an internal PLL with external crystal or resonator support and includes clock monitor and COP watchdog.

Key Specifications

Pinout & Package

MC912D60ACFU8 is housed in a 112-pin TQFP (thin quad flat pack) package per case number 987, with 0.4 mm lead pitch and 20 mm × 20 mm body size. Pin assignments follow Freescale's standardized HCS12 layout with dedicated power/ground pairs, multiplexed I/O ports (Ports A–H, K), and function-specific pins for CAN, SCI, SPI, PWM, ECT, and BDM.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12XDP512 and S912XDP512F0MLH, the MC912D60ACFU8 offers lower cost and smaller footprint for established designs where 60 KB Flash and dual CAN meet requirements-without needing XGATE acceleration or Grade 1 qualification.

Availability

MC912D60ACFU8 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and off-highway telematics requiring stable component supply across extended product lifecycles.

Supply support for MC912D60ACFU8 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 applications.

The MC912D60ACFU8 belongs to the legacy HCS12 family designed specifically for cost-sensitive, real-time automotive control applications where CAN networking, analog sensing, and deterministic interrupt response are essential.

FAQ

What is the maximum operating frequency of the MC912D60ACFU8?

The MC912D60ACFU8 has a maximum core frequency of 8 MHz in normal mode. When using the internal PLL with an external 4 MHz crystal, the system clock can be multiplied to 32 MHz (8×), enabling faster peripheral operation while maintaining CPU timing constraints. This PLL-derived clock feeds the bus and peripheral modules, with configurable dividers allowing independent clock domains for CAN, ADC, and timers.

Does the MC912D60ACFU8 support in-circuit debugging?

Yes, the MC912D60ACFU8 supports Background Debug Mode (BDM) via the BKGD pin, enabling non-intrusive in-circuit debugging including single-stepping, breakpoint setting, register inspection, and flash programming without requiring a separate JTAG interface. The BDM protocol uses a single-wire serial interface compatible with standard Freescale/NXP BDM tools such as the USB-ML-12.

What are the key differences between MC912D60ACFU8 and MC912D60C variants?

The MC912D60ACFU8 uses a Colpitts oscillator configuration and is specified for operation from –40°C to +125°C, while the MC912D60C variant also uses Colpitts but may differ in mask revision and qualification scope. The "A" suffix denotes the initial production version with documented flash protection features and pseudo-STOP mode enhancements per Rev. 3.1 datasheet. Packaging (112-pin TQFP) and core functionality remain identical.

Can the MC912D60ACFU8 operate without an external crystal?

Yes, the MC912D60ACFU8 can operate using its internal RC oscillator in self-clock mode, though this limits accuracy and stability. For production automotive or industrial use, an external crystal (typically 4 MHz) is required to enable the PLL for precise clock generation and meet CAN timing tolerances. The device supports Colpitts oscillator configuration per Section 12.3 of the datasheet.

How many CAN interfaces does the MC912D60ACFU8 support?

The MC912D60ACFU8 integrates two fully independent MSCAN 2.0A/B controllers, each with its own message buffers, acceptance filters, and interrupt vectors. Both controllers support standard (11-bit) and extended (29-bit) identifiers, bit rates up to 1 Mbps, and automatic retransmission-enabling dual-bus architectures common in automotive gateway and body control applications.