NXP Semiconductors MC908AZ60ACFUE

Overview

MC908AZ60ACFUE from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 60 KB on-chip Flash-1 memory, 2 KB RAM, dual EEPROM modules (512 B each), and integrated CAN 2.0A/B controller. It operates at up to 40 MHz bus frequency with internal PLL clock generation and supports 5V operation for industrial control and automotive body electronics applications.

For engineers reviewing the MC908AZ60ACFUE datasheet, MC908AZ60ACFUE pinout, MC908AZ60ACFUE application, or MC908AZ60ACFUE equivalent, key selection criteria include its dual EEPROM architecture for data logging redundancy, MSCAN08 controller with full CAN protocol support, and CGM-based PLL with manual/automatic bandwidth modes for robust timing in noisy environments.

Technical Context

The MC908AZ60ACFUE implements the HCS08 CPU core with 16-bit index register, 16-bit stack pointer, and condition-code register supporting arithmetic/logic operations. Its System Integration Module (SIM) manages reset sources including Power-On Reset, COP watchdog timeout, LVI, and illegal opcode/address detection.

Timing is governed by the Clock Generator Module (CGM), which integrates a crystal oscillator circuit, PLL with acquisition/lock tracking, base clock selector, and CGMXFC filter capacitor interface. The PLL supports programmable multiplication factors and bandwidth modes to stabilize bus clocks under varying temperature and supply conditions.

Key Specifications

Pinout & Package

MC908AZ60ACFUE is housed in a 64-pin QFP (Quad Flat Package) with 0.5 mm pitch, thermally enhanced for industrial ambient operation. Pin assignments are defined per Chapter 1.4 of the Rev. 6 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC908AZ60ACPE, the MC908AZ60ACFUE offers superior thermal dissipation and surface-mount compatibility; versus S9KEAZN64AMLH, it provides integrated CAN functionality and deterministic real-time behavior ideal for legacy automotive protocols.

Availability

MC908AZ60ACFUE is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, smart energy meters, and medical infusion pump controllers requiring stable component supply and long-term lifecycle support.

Supply support for MC908AZ60ACFUE 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.

The MC908AZ60ACFUE belongs to the HCS08 family, designed specifically for cost-sensitive, real-time embedded control in harsh electrical environments where CAN communication, EEPROM reliability, and low-power operation are essential.

FAQ

What is the maximum operating frequency of the MC908AZ60ACFUE?

The MC908AZ60ACFUE achieves a maximum bus frequency of 40 MHz using its internal PLL clock generator. This frequency is derived from an external crystal (1–8 MHz) multiplied via programmable PLL settings. The actual achievable frequency depends on VDD level, temperature, and CGM configuration - full specification is provided in Section 10.9 of the Rev. 6 datasheet. The MC908AZ60ACFUE maintains timing compliance across its rated industrial temperature range (−40°C to +85°C).

Does the MC908AZ60ACFUE support in-system programming (ISP)?

Yes, the MC908AZ60ACFUE supports in-system programming via its on-chip FLASH-1 and FLASH-2 memory modules. Programming is performed using standard serial bootstrap loader (SBL) commands over SCI or dedicated programming pins. Both flash blocks include block protection registers to prevent accidental erasure. The MC908AZ60ACFUE datasheet details ISP timing, voltage requirements, and security lock mechanisms in Chapters 4 and 5.

How many analog-to-digital converter (ADC) channels does the MC908AZ60ACFUE have?

The MC908AZ60ACFUE integrates a 10-bit successive-approximation ADC with nine total input channels: eight multiplexed onto Port B (ATD0–ATD7) and one additional channel on Port D bit 0 (ATD8). It supports both single-ended and differential conversion modes, internal reference selection (VREFH/VREFL), and configurable sample-and-hold timing. All ADC functionality is documented in Chapter 26 of the MC908AZ60ACFUE datasheet.

Is the MC908AZ60ACFUE pin-compatible with other HCS08 devices like the MC68HC908AS60A?

No, the MC908AZ60ACFUE is not pin-compatible with the MC68HC908AS60A. Although both belong to the HCS08 family and share architectural similarities, they differ in pin count (64 vs. 48), I/O mapping, and peripheral assignment - for example, the MC908AZ60ACFUE includes dedicated CAN Tx/Rx pins and extra ADC channels absent in the AS60A. Pin assignments for the MC908AZ60ACFUE are defined in Section 1.4 of its datasheet and must be verified independently.

What low-power modes does the MC908AZ60ACFUE support, and how do they affect peripheral operation?

The MC908AZ60ACFUE supports WAIT and STOP low-power modes. In WAIT mode, the CPU halts but clocks remain active for peripherals like SCI, SPI, and timers - enabling wake-up via interrupt. In STOP mode, all clocks stop except for the real-time interrupt (RTI) and asynchronous interrupts; RAM and most registers retain state, but ADC and CAN modules are disabled until wake-up. These behaviors are detailed in Sections 4.8, 5.8, and 6.6 of the MC908AZ60ACFUE datasheet.