NXP Semiconductors MC908GZ32VFAE

Overview

MC908GZ32VFAE from NXP (formerly Freescale) is an 8-bit HCS08-core microcontroller with 32 KB on-chip Flash, 1.5 KB RAM, and integrated peripherals including 10-bit ADC (24 channels), MSCAN08 controller, ESCI, SPI, I²C-compatible SCI, two 16-bit TIM modules, and a PLL-based clock generator. It operates from 2.7–5.5 V and targets automotive body electronics and industrial control systems requiring CAN communication and analog sensing.

For engineers reviewing the MC908GZ32VFAE datasheet, MC908GZ32VFAE pinout, MC908GZ32VFAE application, or MC908GZ32VFAE equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases in CAN-based sensor nodes and motor controllers, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The MC908GZ32VFAE implements the HCS08 CPU core with 20 MHz maximum bus frequency, supported by a configurable PLL that accepts 1–8 MHz crystal input and generates internal clocks up to 40 MHz. Its memory map includes 32 KB Flash (with block protection), 1.5 KB RAM, and 256 B EEPROM emulation via Flash.

Peripheral integration centers on real-time control: MSCAN08 supports ISO 11898-1 compliant CAN 2.0A/B communication; the 10-bit ADC features hardware-triggered conversions, programmable sample time, and 24 selectable inputs across Ports A, B, G, and dedicated ADx pins; dual 16-bit TIM modules support input capture, output compare, PWM generation, and timer linking between TIM1 and TIM2.

Key Specifications

Pinout & Package

MC908GZ32VFAE is housed in a 64-pin LQFP (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments are fully defined in Rev. 6 datasheet Sections 1.4 and 1.5, including dedicated CAN TX/RX, ADC analog inputs, oscillator, reset, and multi-function I/O ports.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC908GZ32VFAE, S9KEAZN32AMFK offers higher performance and modern peripherals at the cost of CAN hardware integration and increased power consumption, while MC9S08DZ32CLC provides pin- and function-equivalent CAN capability with reduced analog I/O - making it suitable only for non-LIN, lower-channel-count replacements.

Availability

MC908GZ32VFAE is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, distributed sensor networks, and smart actuator interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant operation.

Supply support for MC908GZ32VFAE 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 Freescale's microcontroller heritage.

The MC908GZ32VFAE belongs to the HCS08 family, designed specifically for cost-sensitive, real-time automotive body electronics and industrial control systems requiring integrated CAN, robust analog interfaces, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MC908GZ32VFAE?

The MC908GZ32VFAE supports a maximum bus clock frequency of 20 MHz, achieved via its integrated PLL which multiplies a 1–8 MHz crystal input. The PLL allows internal core operation at up to 40 MHz while maintaining a 20 MHz bus clock for peripheral synchronization - critical for deterministic timing in CAN and ADC subsystems within the MC908GZ32VFAE.

Does the MC908GZ32VFAE include a hardware CAN controller?

Yes, the MC908GZ32VFAE integrates the MSCAN08 module - a fully compliant ISO 11898-1 CAN 2.0A/B controller with 15 message buffers, automatic retransmission, and error confinement. This hardware accelerator handles bit timing, message framing, and CRC calculation independently of the CPU, ensuring reliable real-time communication in automotive networks without external CAN controllers.

What ADC resolution and channel count does the MC908GZ32VFAE support?

The MC908GZ32VFAE features a 10-bit successive-approximation ADC with 24 selectable input channels mapped across Ports A, B, G, and dedicated ADx pins. It supports programmable sample time, hardware triggering (e.g., from TIM overflow), and multiple justification modes - delivering consistent 10-bit precision across its full –40°C to +125°C operating range as specified in the MC908GZ32VFAE datasheet.

Is the MC908GZ32VFAE pin-compatible with other GZ-series MCUs?

The MC908GZ32VFAE shares the same 64-pin LQFP package and core pinout with MC908GZ48 and MC908GZ60, including identical placement of VDD/VSS, OSC1/OSC2, RST, CANTX/CANRX, and major I/O ports. However, Flash size, RAM, and certain peripheral enable bits differ - meaning PCB layout is reusable, but firmware and configuration registers require model-specific adaptation for the MC908GZ32VFAE.

What low-power modes are supported by the MC908GZ32VFAE?

The MC908GZ32VFAE supports two primary low-power states: Wait mode (CPU halted, clocks active, RAM retained) and Stop mode (all clocks stopped except IRQ wake source, RAM lost). Both modes are entered via STOP or WAIT instructions and exited by reset or enabled interrupts - enabling energy-efficient operation in battery-powered sensor nodes and always-on automotive modules using the MC908GZ32VFAE.