NXP Semiconductors MC908GZ32MFUE-NXP

Overview

MC908GZ32MFUE from NXP (originally Freescale) is an 8-bit HCS08-core microcontroller featuring 32 KB Flash, 1 KB RAM, integrated 10-bit ADC with 24 channels, dual TIM modules, ESCI and SPI serial interfaces, and a PLL-based clock generator. It operates from 2.7–5.5 V and supports automotive-grade temperature range (–40°C to +125°C), targeting engine control units, body electronics, and industrial sensor nodes.

For engineers reviewing the MC908GZ32MFUE datasheet, MC908GZ32MFUE pinout, MC908GZ32MFUE application, or MC908GZ32MFUE equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases in automotive subsystems, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The MC908GZ32MFUE implements the HCS08 CPU core with enhanced addressing modes and a 20-bit program counter, supporting up to 1 MB linear address space. Its Clock Generator Module integrates a crystal oscillator, PLL with programmable multiplier (×1 to ×32), and automatic acquisition/lock logic for stable system clocks across voltage and temperature variations.

Peripheral integration includes two independent 16-bit timer interface modules (TIM1/TIM2) with input capture, output compare, and PWM generation; an Enhanced Serial Communications Interface (ESCI) supporting LIN 2.0 and UART protocols; and a System Integration Module (SIM) managing reset, interrupt routing, and low-power mode transitions including Stop and Wait modes with wake-up on IRQ, KBI, or ADC completion.

Key Specifications

Pinout & Package

MC908GZ32MFUE is housed in a 64-lead Low-Profile Quad Flat Package (64LQFP, MFUE suffix), with exposed thermal pad for enhanced heat dissipation in automotive under-hood applications. Pin assignments follow Freescale's standardized GZ-series layout, with dedicated analog supply pins (VDDAD/VSSAD), PLL bias pins (VDDA/VSSA), and multi-function I/O ports mapped to ADC, timer, and serial peripheral signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC908GZ32MFUE, MC9S08DZ32CLC offers native CAN but fewer ADC channels, while S9KEAZ32AMLH provides ARM scalability at the cost of external LIN components and increased software development effort.

Availability

MC908GZ32MFUE is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, and industrial motor feedback systems requiring stable component supply, long-term lifecycle support, and AEC-qualified temperature range operation.

Supply support for MC908GZ32MFUE 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 acquired Freescale Semiconductor in 2015 and maintains full support for the legacy HCS08 portfolio, including documentation, tools, and long-term supply commitments for automotive and industrial customers.

The MC908GZ32MFUE belongs to the HCS08 GZ-series microcontrollers designed specifically for cost-sensitive, high-reliability automotive body and powertrain subsystems requiring robust analog integration, LIN connectivity, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MC908GZ32MFUE?

The MC908GZ32MFUE supports a maximum bus clock frequency of 20 MHz, achieved via its integrated PLL with programmable multiplication factor (×1 to ×32) and external crystal input (1–8 MHz). The actual system frequency depends on CGM configuration and crystal stability; typical production designs use 4 MHz crystal ×8 = 32 MHz internal PLL output, divided by 2 to yield 16 MHz bus clock for optimal noise immunity and timing margin. MC908GZ32MFUE does not support frequencies above 20 MHz on the bus interface.

Does the MC908GZ32MFUE include a CAN controller?

No, the MC908GZ32MFUE does not include an MSCAN08 controller. While its pinout reserves PTC0 as CANTX, the MSCAN08 module is physically absent in the GZ32 die - only present in GZ60 and GZ48 variants. Communication is limited to ESCI (LIN/UART) and SPI. For CAN-capable alternatives, consider MC9S08DZ32CLC, which shares the same 64LQFP package and adds full MSCAN08 functionality alongside reduced ADC channel count.

How many ADC channels does the MC908GZ32MFUE support, and what is their resolution?

The MC908GZ32MFUE features a single 10-bit successive-approximation ADC with 24 analog input channels, mapped across Ports A (AD8–AD15), B (AD0–AD7), and G (AD16–AD23). Resolution is fixed at 10 bits; no 8-bit mode is available. Conversion time is programmable from 12 to 20 bus cycles per sample, enabling trade-offs between speed and accuracy. The ADC supports left/right justification and hardware averaging across multiple conversions to improve effective resolution.

What debug interface does the MC908GZ32MFUE support?

The MC908GZ32MFUE supports Background Debug Mode (BDM) via a single-wire interface using the BKGD pin (shared with Port E bit 7). It is fully compatible with standard P&E Micro debug probes (USB-ML-12, Cyclone Pro) and CodeWarrior Development Studio v6.3+. No JTAG interface is present. BDM enables non-intrusive flash programming, real-time register inspection, and breakpoint debugging without requiring dedicated debug pins beyond BKGD and VDD/VSS.

Is the MC908GZ32MFUE qualified for automotive applications?

The MC908GZ32MFUE is specified for operation from –40°C to +125°C and meets automotive electrical stress requirements per Freescale's internal qualification standards. While it is not formally certified to AEC-Q100 Grade 1 (which requires additional reliability testing), it has been widely deployed in production automotive body control modules and engine sensors since 2004. NXP continues to list it in automotive-focused product selectors and provides PPAP documentation upon request for qualified customers.