NXP Semiconductors MC9S08QG4CFFE

Overview

MC9S08QG4CFFE from Freescale Semiconductor is an 8-bit HCS08 microcontroller with 4 KB flash, 256 bytes RAM, 20-MHz CPU, internal clock source (FLL), and integrated peripherals including 8-channel 10-bit ADC, SCI, SPI, I²C, TPM, ACMP, and KBI - used in low-cost embedded control for appliance motor interfaces and sensor signal conditioning.

For engineers reviewing the MC9S08QG4CFFE datasheet, MC9S08QG4CFFE pinout, MC9S08QG4CFFE application, or MC9S08QG4CFFE equivalent, key selection factors include QFN-16 package compatibility, 1.8–3.6 V operation, single-wire background debug support, and FLASH block protection for firmware integrity in cost-sensitive industrial controls.

Technical Context

The MC9S08QG4CFFE implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources and featuring a debug module with two comparators, nine trigger modes, and eight-deep FIFO for flow tracing. Its ICS module integrates a frequency-locked loop (FLL) with factory-trimmed internal reference enabling ±0.2% resolution and ±2% deviation over voltage/temperature.

Power management includes Wait mode and three Stop modes (Stop1–Stop3), with COP watchdog configurable to run from dedicated 1-kHz internal clock or bus clock. Peripheral integration supports hardware-triggered ADC conversions via RTI, ACMP output routing to TPM, and keyboard interrupt with software-selectable edge/level polarity on eight pins.

Key Specifications

Pinout & Package

MC9S08QG4CFFE is housed in a 16-pin quad flat no-lead (QFN) package with exposed thermal pad (98ASA00671D), measuring 4 mm × 4 mm × 0.85 mm, optimized for compact PCB layouts and thermal dissipation in space-constrained applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08QG8CFFE, the MC9S08QG4CFFE reduces memory footprint and cost for fixed-function applications, while S9KEAZ128AMLH offers architectural scalability at the expense of migration effort and layout change.

Availability

MC9S08QG4CFFE is available at Aetrix Electronics and suitable for smart appliance motor control, industrial sensor signal conditioning, wireless remote control hubs, and low-power battery-operated timers requiring stable component supply and long-term manufacturability.

Supply support for MC9S08QG4CFFE 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 was a leading designer of embedded processors, analog, and connectivity solutions before its acquisition by NXP Semiconductors in 2015.

The MC9S08QG4CFFE belongs to the HCS08 family - a cost-optimized 8-bit MCU line targeting entry-level industrial, consumer, and automotive body electronics where small footprint, low power, and debug simplicity are critical.

FAQ

What is the operating voltage range for the MC9S08QG4CFFE?

The MC9S08QG4CFFE operates from 1.8 V to 3.6 V over its full temperature range. This range allows direct interfacing with common 3.3 V logic families and supports battery-powered applications such as remote controls and portable sensors. The internal voltage regulator and LVD circuit ensure reliable operation across this span without external level-shifting components.

Does the MC9S08QG4CFFE support in-circuit debugging?

Yes, the MC9S08QG4CFFE includes a single-wire background debug interface using the BKGD/MS pin. It supports real-time bus capture, breakpoint setting (one active breakpoint plus two in debug module), and on-chip emulation - all without requiring additional debug headers or JTAG adapters. This capability is fully implemented in the MC9S08QG4CFFE silicon and documented in the HCS08 debug module specification.

What package type is used for the MC9S08QG4CFFE?

The MC9S08QG4CFFE uses a 16-pin QFN package (case outline 98ASA00671D), measuring 4 mm × 4 mm with an exposed thermal pad. This package replaces earlier gold-wire versions with copper-wire interconnect per Freescale's QFN migration addendum, improving reliability and thermal performance while maintaining mechanical and solder-reflow compatibility.

Can the MC9S08QG4CFFE generate PWM signals?

Yes, the MC9S08QG4CFFE includes a two-channel Timer/Pulse-Width Modulator (TPM) module. Each channel supports buffered edge-aligned and center-aligned PWM modes, input capture, and output compare. PWM generation is fully functional in Run and Wait modes, and the module accepts ACMP output as a trigger source - enabling analog-threshold-driven duty-cycle modulation in the MC9S08QG4CFFE.

Is there an internal temperature sensor in the MC9S08QG4CFFE?

Yes, the MC9S08QG4CFFE integrates an on-die temperature sensor accessible through the 10-bit ADC's internal channel. This sensor is factory-calibrated and usable across the full operating temperature range (−40°C to +105°C). Its output is referenced to the internal bandgap voltage, eliminating need for external calibration components in the MC9S08QG4CFFE design.