NXP Semiconductors MC9S08GT16ACFDER

Overview

MC9S08GT16ACFDER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU, 16 KB on-chip FLASH, 2 KB RAM, and integrated peripherals including dual SCI, SPI, I²C, 10-bit ATD, and dual TPM timer/PWM modules. It operates from 1.8–3.6 V and supports three low-power stop modes - used in industrial sensor nodes, motor control interfaces, and battery-powered metering systems.

For engineers reviewing the MC9S08GT16ACFDER datasheet, MC9S08GT16ACFDER pinout, MC9S08GT16ACFDER application, or MC9S08GT16ACFDER equivalent, key selection criteria include its 32-pin QFN package with exposed thermal pad, single-wire background debug interface, internal FLL clock generator with ±0.5% accuracy across voltage/temperature, and FLASH security block protection for firmware IP protection.

Technical Context

The MC9S08GT16ACFDER implements the HCS08 CPU core with HC08 instruction set extension (including BGND), supporting up to 32 interrupt/reset sources and real-time interrupt (RTI) capability active in run, wait, and stop modes. Its internal clock generator (ICG) provides multiple operating modes - FEI, FEE, FBE - with frequency-locked-loop (FLL) engagement using internal or external crystal/resonator sources.

Peripherals are memory-mapped and share bus arbitration via the on-chip crossbar switch. The dual TPM modules deliver flexible PWM generation (3-channel + 2-channel), while the 8-channel 10-bit ATD supports software-triggered and hardware-synchronized conversions with configurable sample time and reference selection (VREFH/VREFL).

Key Specifications

Pinout & Package

MC9S08GT16ACFDER is housed in a 32-pin QFN package (98ASA00473D) with 5 mm × 5 mm footprint, 0.5 mm pitch, and exposed thermal pad (EPAD) for enhanced thermal dissipation. Pinout conforms to Freescale's MC9S08GT16A series mechanical drawing and electrical pin assignment per Rev. 1 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08GT16ACFDER, S9KEAZ128AMLH offers modern ARM performance and connectivity at the cost of architectural discontinuity, while MC9S08AC128CFUE delivers seamless scalability within the HCS08 family - preserving toolchain, debug workflow, and peripheral register compatibility.

Availability

MC9S08GT16ACFDER is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, and BLDC motor control applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MC9S08GT16ACFDER 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, formed from the acquisition of Freescale Semiconductor in 2015.

The MC9S08GT16ACFDER belongs to the legacy HCS08 microcontroller family, designed specifically for cost-sensitive, low-power embedded control in industrial and consumer equipment where deterministic real-time response and debug reliability are critical.

FAQ

What is the package type and thermal pad configuration of the MC9S08GT16ACFDER?

The MC9S08GT16ACFDER uses a 32-pin QFN package (98ASA00473D) measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed thermal pad (EPAD) centered on the bottom. This EPAD must be soldered to a thermally conductive PCB copper area for effective heat dissipation and optimal electrical noise immunity - recommended via at least nine thermal vias to inner ground planes.

Does the MC9S08GT16ACFDER support in-circuit debugging, and what interface does it use?

Yes, the MC9S08GT16ACFDER supports full in-circuit debugging via a single-wire background debug (BDM) interface using the BKGD/MS pin. It includes an on-chip debug module with two hardware breakpoints, real-time bus capture, and eight-deep FIFO for change-of-flow tracing - enabling non-intrusive code inspection and real-time variable monitoring without halting execution.

What are the supported clock sources and accuracy specifications for the MC9S08GT16ACFDER?

The MC9S08GT16ACFDER supports internal RC, external crystal (32 kHz or 1–20 MHz), resonator, or external clock input. Its internal clock generator features an FLL with ±0.2% trimming resolution and maintains ±0.5% frequency accuracy across the full 1.8–3.6 V supply range and –40°C to +105°C temperature range - verified per Freescale MC9S08GT16A Rev. 1 datasheet Section 9.1.1.

Can the MC9S08GT16ACFDER operate reliably at 1.8 V, and which peripherals remain functional?

Yes, the MC9S08GT16ACFDER guarantees full functionality - including FLASH programming/erasing, ATD conversion, and all communication peripherals (SCI, SPI, I²C) - down to 1.8 V. Its low-voltage detection (LVD) circuit remains operational across this range, and all three stop modes retain wake-up capability via RTI or external IRQ, making it suitable for primary-cell battery applications.

How many I/O pins with 20 mA drive capability does the MC9S08GT16ACFDER provide, and which ports are they assigned to?

The MC9S08GT16ACFDER provides eight high-current I/O pins, each capable of sourcing or sinking up to 20 mA. These are assigned to Port C (PTC0–PTC7) as defined in the MC9S08GT16A Rev. 1 datasheet Section 6.2.3 - enabling direct driving of LEDs, small relays, or optocouplers without external buffer transistors.