NXP Semiconductors MC9S08AW16CFDE

Overview

MC9S08AW16CFDE from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU core, 16 KB on-chip FLASH memory, and 1 KB RAM. It integrates dual SCI, SPI, I²C, 16-channel 10-bit ADC, two 16-bit TPM modules (one 2-channel, one 6-channel), and KBI for embedded control in automotive body electronics and industrial sensor nodes.

For engineers reviewing the MC9S08AW16CFDE datasheet, MC9S08AW16CFDE pinout, MC9S08AW16CFDE application, or MC9S08AW16CFDE equivalent, key selection considerations include its 48-pin QFN package with exposed thermal pad, single-wire background debug interface, COP watchdog, low-voltage detect, and support for stop2/stop3 power-saving modes in resource-constrained systems.

Technical Context

The MC9S08AW16CFDE implements the S08CPUV2 core with HC08 instruction set extension including BGND, operating at up to 40 MHz CPU frequency and 20 MHz bus frequency. Its internal clock generator supports multiple modes - FEI, FEE, FBE, and SCM - with NVM-trimmed internal reference and external crystal/resonator options.

Peripherals are tightly coupled to the 20-MHz bus: the 16-bit TPM modules support input capture, output compare, edge-aligned and centered PWM; the 10-bit ADC includes automatic compare and temperature sensor input; and dual SCI modules support 13-bit break detection for robust serial diagnostics.

Key Specifications

Pinout & Package

MC9S08AW16CFDE is housed in a 48-pin low-profile quad flat no-lead (QFN) package with 7 mm × 7 mm body and exposed thermal pad (package code: 98ASA00466D per Freescale QFN Addendum Rev. 0, July 2014). The copper-wire bonded variant replaces earlier gold-wire versions for improved reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AW16CFDE, S9KEAZ128AMLH offers greater compute headroom and modern peripherals but demands architectural rework, while MC9S08AC16CFDE provides functional subset compatibility at lower cost - neither is pin- or code-compatible without validation.

Availability

MC9S08AW16CFDE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart lighting controls, and appliance motor management requiring stable component supply across long-lifecycle programs.

Supply support for MC9S08AW16CFDE 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 (now part of NXP Semiconductors since 2015) was a leading designer of embedded processors, analog, and connectivity solutions for automotive, industrial, and consumer markets.

The MC9S08AW16CFDE belongs to the HCS08 AW-series microcontrollers, engineered for cost-sensitive, low-power automotive body control and industrial automation applications demanding robust debug, mixed-signal integration, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MC9S08AW16CFDE CPU core?

The MC9S08AW16CFDE features an HCS08 CPU core rated for up to 40 MHz operation, with a corresponding 20 MHz internal bus frequency. This timing is achievable using the internal clock generator in FEE mode with appropriate external crystal or resonator configuration, and is validated across the full industrial temperature range (–40°C to +105°C) per the official datasheet specifications.

Does the MC9S08AW16CFDE support in-circuit debugging, and what interface does it use?

Yes, the MC9S08AW16CFDE supports real-time in-circuit debugging via a single-wire background debug mode (BDM) interface using the BKGD/MS pin. It provides breakpoint capability (one active breakpoint plus two more in the on-chip debug module), real-time ICE with bus capture buffer, and full register visibility - all without requiring additional debug pins beyond BKGD/MS and RESET.

What package type and dimensions does the MC9S08AW16CFDE use?

The MC9S08AW16CFDE is packaged in a 48-pin low-profile QFN (LQFN) with 7 mm × 7 mm body size and exposed thermal pad. Its official package outline number is 98ASA00466D, reflecting the copper-wire bonding migration documented in Freescale's QFN Addendum Rev. 0 (July 2014).

Can the MC9S08AW16CFDE operate from a single supply, and what voltage range is supported?

Yes, the MC9S08AW16CFDE operates from a single supply across 2.7 V to 5.5 V. It uses separate VDD/VSS (digital) and VDDAD/VSSAD (analog) rails internally, but both may be tied to the same regulated supply if proper decoupling and grounding practices are followed - especially critical for ADC accuracy and noise immunity.

How many timer modules does the MC9S08AW16CFDE include, and what PWM capabilities do they offer?

The MC9S08AW16CFDE includes two independent 16-bit timer/pulse-width modulator (TPM) modules: TPM1 (2-channel) and TPM2 (6-channel). Both support edge-aligned and centered PWM (CPWM) with buffered updates, input capture, and output compare - enabling precise motor control, LED dimming, and signal generation without CPU intervention.