NXP Semiconductors MC908AZ60AMFUE

Overview

MC908AZ60AMFUE from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring 60 KB on-chip Flash memory, 2 KB RAM, and integrated CAN 2.0A/B controller, ADC (10-bit, 16-channel), SPI, SCI, and programmable timers. It operates at up to 40 MHz bus frequency with internal PLL clock generation and supports automotive-grade temperature range (–40°C to +125°C) in a 64-pin QFP package.

For engineers reviewing the MC908AZ60AMFUE datasheet, MC908AZ60AMFUE pinout, MC908AZ60AMFUE application, or MC908AZ60AMFUE equivalent, key selection criteria include CAN interface support, Flash endurance (100K erase/write cycles), EEPROM emulation capability, low-power STOP/WAIT modes, and qualification per AEC-Q100 Grade 1 for automotive control units.

Technical Context

The MC908AZ60AMFUE implements the HCS08 CPU core with enhanced BDM debug interface, dual Flash blocks (FLASH-1/FLASH-2) enabling background programming, and two independent EEPROM modules (EEPROM-1/EEPROM-2) supporting byte-level writes with configurable protection. Its System Integration Module (SIM) manages reset sources including COP watchdog, LVI, and illegal opcode detection.

Timing is governed by the Clock Generator Module (CGM), which integrates a crystal oscillator, PLL with programmable bandwidth, and base clock selector - enabling flexible clock tree configuration for real-time deterministic operation. The MSCAN08 controller provides full CAN protocol handling with message buffering and error management.

Key Specifications

Pinout & Package

MC908AZ60AMFUE is housed in a 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined across eight I/O ports (Port A–H), plus dedicated CAN, BDLC, SCI, SPI, and analog subsystem pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC908AZ60AMFUE, MC9S12XDP512 offers greater computational headroom and CAN FD readiness but requires PCB redesign due to 112-pin LQFP packaging and different peripheral mapping; S9KEAZN64AMLH delivers superior power efficiency and ARM-based development continuity but lacks native HCS08 code compatibility and dual-Flash in-system update capability.

Availability

MC908AZ60AMFUE is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and industrial CAN networks requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant assurance.

Supply support for MC908AZ60AMFUE 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) pioneered automotive and industrial microcontrollers with emphasis on functional safety, mixed-signal integration, and robust qualification standards.

The MC908AZ60AMFUE belongs to the HCS08 family designed specifically for cost-sensitive, high-reliability automotive control applications - balancing Flash density, CAN connectivity, analog integration, and AEC-Q100 compliance in a single-chip solution.

FAQ

What is the maximum operating frequency of the MC908AZ60AMFUE?

The MC908AZ60AMFUE supports a maximum bus frequency of 40 MHz, achieved via its integrated Clock Generator Module (CGM) with PLL. This frequency is sustained across the full –40°C to +125°C temperature range and 2.7–5.5 V supply, making it suitable for demanding real-time automotive control loops. The MC908AZ60AMFUE's PLL allows flexible clock synthesis from low-frequency crystals to meet timing-critical application requirements.

Does the MC908AZ60AMFUE support in-application programming (IAP)?

Yes, the MC908AZ60AMFUE supports in-application programming through its dual Flash architecture (FLASH-1 and FLASH-2). Code executing from one Flash block can safely program or erase the other, enabling field firmware updates without halting system operation. This capability is implemented via dedicated Flash control registers and protected by block-level write enable bits, ensuring data integrity during MC908AZ60AMFUE runtime updates.

How many CAN message buffers does the MC908AZ60AMFUE provide?

The MC908AZ60AMFUE integrates the MSCAN08 controller with 15 individually configurable message buffers. Each buffer supports full CAN 2.0A/B frame formatting, hardware ID acceptance filtering, and automatic retransmission on error. This buffer count enables efficient handling of multiple concurrent CAN identifiers in automotive networks - a key capability confirmed in the MC908AZ60AMFUE datasheet Section 23.

Is the MC908AZ60AMFUE pin-compatible with other HCS08 devices like the MC68HC908AS60A?

No, the MC908AZ60AMFUE is not pin-compatible with the MC68HC908AS60A. While both belong to the HCS08 family and share architectural similarities, they differ in pin count (64-pin vs. 48-pin), peripheral allocation (e.g., MC908AZ60AMFUE includes dedicated CAN Tx/Rx pins; AS60A does not), and I/O mapping. Direct substitution would require PCB layout revision and firmware adaptation due to these physical and functional differences in the MC908AZ60AMFUE implementation.

What debug interface does the MC908AZ60AMFUE use?

The MC908AZ60AMFUE uses the Background Debug Mode (BDM) interface - a single-wire, synchronous serial protocol compatible with standard Freescale/NXP BDM debuggers. This interface supports full-speed debugging, flash programming, register read/write, and breakpoint insertion without halting real-time operation. The MC908AZ60AMFUE's BDM module is accessed via the BKGD pin and requires no external JTAG circuitry, simplifying test fixture design.