NXP Semiconductors MC908GP32CFBER

Overview

MC908GP32CFBER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 32 KB on-chip Flash memory, 1 KB RAM, a 10-bit ADC with 8 input channels, two 16-bit timer modules (TIM1/TIM2), and integrated SPI/SCI serial interfaces. It operates at up to 8 MHz bus frequency with internal clock generation via PLL-based CGM and supports low-power Wait/Stop modes for battery-sensitive embedded control.

For engineers reviewing the MC908GP32CFBER datasheet, MC908GP32CFBER pinout, MC908GP32CFBER application, or MC908GP32CFBER equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in industrial sensing and motor control, and two confirmed alternative MCU options with documented functional alignment and key trade-offs.

Technical Context

The MC908GP32CFBER implements the HCS08 CPU core with 8-bit architecture, supporting 59 instructions and a 16-bit address space. Its Clock Generator Module (CGM) integrates a crystal oscillator, PLL multiplier (×1–×32), and base clock selector to generate stable system clocks from external crystals (1–8 MHz) or internal RC sources.

Peripheral integration includes a 10-bit successive-approximation ADC with programmable sample time and conversion trigger sources (software, TIM, SCI), dual 16-bit timer modules with input capture/output compare/PWM capability, and full-duplex SCI and master/slave SPI interfaces-all accessible via memory-mapped I/O registers and interrupt-driven operation.

Key Specifications

Pinout & Package

MC908GP32CFBER is housed in a 44-pin QFP (Quad Flat Package), case 824A, with 0.8 mm lead pitch and exposed thermal pad. Pin assignments are fully defined per Freescale MC68HC908GP32 Rev. 10 datasheet Section 1.4 and Figure 1-2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with MC908GP32CFBER, MC9S08QG8CDTE offers lower cost and footprint but sacrifices PLL-based clock precision and memory headroom, while S9KEAZ128AMLH delivers architectural modernization and feature expansion at the cost of legacy code compatibility and increased design complexity.

Availability

MC908GP32CFBER is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, smart power outlets, and medical device interfaces requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for MC908GP32CFBER 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 embedded MCU heritage.

The MC908GP32CFBER belongs to the legacy HCS08 microcontroller family, designed specifically for cost-sensitive, low-power embedded control in appliances, industrial automation, and medical peripherals where deterministic real-time behavior and Flash endurance are critical.

FAQ

What is the maximum operating frequency of the MC908GP32CFBER?

The MC908GP32CFBER achieves a maximum bus frequency of 8 MHz using its internal PLL, which can multiply external crystal inputs (1–8 MHz) by factors from ×1 to ×32. This yields a 200 ns instruction cycle time, enabling precise timing for PWM, ADC sampling, and serial communication - all critical in the MC908GP32CFBER's target applications like motor control and sensor interfacing.

Does the MC908GP32CFBER support in-circuit debugging?

Yes, the MC908GP32CFBER supports background debug mode (BDM) via a dedicated single-wire interface, allowing full read/write access to memory and registers during runtime without halting execution. This capability is integral to the MC908GP32CFBER's development workflow and is supported by Freescale's CodeWarrior IDE and third-party BDM probes compatible with HCS08 architecture.

What packaging and RoHS compliance status does the MC908GP32CFBER have?

The MC908GP32CFBER is supplied in a 44-pin QFP (case 824A) package with lead-free (Pb-free) terminations and complies with RoHS Directive 2011/65/EU. The package features an exposed thermal pad for improved heat dissipation and meets JEDEC standard MS-026 for mechanical dimensions and soldering profiles - essential for reliable reflow assembly of the MC908GP32CFBER in industrial PCBs.

Can the MC908GP32CFBER operate from a single 3.3 V supply?

No - the MC908GP32CFBER requires a nominal 5.0 V ±10% supply (VDD = 4.5–5.5 V) for guaranteed operation across its full temperature range (–40°C to +85°C). While some peripherals tolerate 3.3 V logic levels, the core voltage domain is strictly 5 V, and attempting 3.3 V operation risks undefined behavior, failed Flash programming, or ADC inaccuracies - all documented limitations for the MC908GP32CFBER.

How many interrupt vectors does the MC908GP32CFBER support?

The MC908GP32CFBER supports 22 unique interrupt vectors, including IRQ, KBI, SCI, SPI, TIM1/TIM2 overflow/input-capture/output-compare, ADC conversion complete, and CGM-related interrupts. Each vector maps to a dedicated 16-bit address in the interrupt vector table located at fixed memory locations - a key architectural feature ensuring deterministic latency and predictable real-time response in the MC908GP32CFBER's embedded control applications.