NXP Semiconductors MC9S08AC16MFGE

Overview

MC9S08AC16MFGE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB Flash, 1 KB RAM, 40-MHz CPU, 3× 16-bit TPM timers, dual SCI, SPI, I²C, 8-channel 10-bit ADC, and up to 38 GPIO - designed for industrial control, appliance motor management, and automotive body electronics.

For engineers reviewing the MC9S08AC16MFGE datasheet, MC9S08AC16MFGE pinout, MC9S08AC16MFGE application, or MC9S08AC16MFGE equivalent, key selection criteria include QFN-48 package compatibility, on-chip debug support with background mode, COP watchdog independence, low-voltage detection interrupt capability, and Flash security options for firmware protection.

Technical Context

The MC9S08AC16MFGE implements the S08CPUV2 core with HC08 instruction set extension (BGND), 20-MHz bus frequency, and integrated internal clock generator supporting FEI/FEE/FBE modes with NVM-trimmed precision. It features a three-module timer subsystem (TPM) - two 2-channel and one 4-channel - each configurable for input capture, output compare, edge-aligned or buffered center-aligned PWM.

Peripherals include dual SCI modules with 13-bit break support, SPI V3, I²C V2 (up to 100 kbps under full bus loading), and an ADC with automatic compare function and internal temperature sensor. System-level protection includes COP reset with independent clock source option, LVD interrupt/reset, illegal opcode/address detection, and Flash block protection.

Key Specifications

Pinout & Package

MC9S08AC16MFGE is housed in a 48-pin quad flat no-lead (QFN) package per outline 98ASA00466D, featuring an exposed thermal pad for enhanced thermal dissipation and mechanical stability. Pin assignments follow Freescale's standardized HCS08 QFN layout with dedicated VDD/VSS pairs, analog supply separation (VDDAD/VSSAD), and multiplexed peripheral functions across Ports A–G.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC16MFGE, MC9S08AC60CFGE offers direct Flash scalability within identical hardware constraints, while S9KEAZ128AMLH provides architectural evolution at the cost of redesign effort - making the former ideal for incremental upgrades and the latter for next-generation platforms.

Availability

MC9S08AC16MFGE is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart home appliance applications requiring stable component supply, long-lifecycle support, and qualified automotive-grade variants.

Supply support for MC9S08AC16MFGE 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 delivering secure, scalable solutions for automotive, industrial, IoT, and communication infrastructure markets.

The MC9S08AC16MFGE belongs to the legacy HCS08 microcontroller family, engineered for cost-sensitive, real-time embedded systems where deterministic 8-bit performance, low power, and high integration are essential - especially in white goods and entry-level automotive ECUs.

FAQ

What is the maximum operating frequency of the MC9S08AC16MFGE CPU core?

The MC9S08AC16MFGE CPU core operates at up to 40 MHz, while its internal bus frequency is rated at 20 MHz. This architecture enables efficient instruction execution with predictable timing behavior, critical for real-time control tasks such as motor commutation and sensor sampling. The core uses the S08CPUV2 implementation with HC08 instruction set extensions including BGND for background debugging.

Does the MC9S08AC16MFGE support in-circuit debugging without external hardware?

Yes, the MC9S08AC16MFGE integrates an on-chip background debug module (BDM) accessible via the BKGD/MS pin. This allows full in-circuit debugging - including breakpoint setting, memory inspection, and register monitoring - without requiring external emulators. The MC9S08AC16MFGE BDM supports three breakpoints (one active + two in debug module), eight-deep FIFO trace, and both tag and force trigger modes for robust development workflows.

What package type and pin count does the MC9S08AC16MFGE use?

The MC9S08AC16MFGE uses a 48-pin quad flat no-lead (QFN) package with outline number 98ASA00466D. This copper-wire-bonded variant replaces earlier gold-wire versions and includes an exposed thermal pad for improved heat dissipation. The pinout is fully compatible with other HCS08 QFN devices like MC9S08AC60CFGE, enabling footprint reuse across the AC-series family.

Can the MC9S08AC16MFGE operate from a single 3.3 V supply?

Yes, the MC9S08AC16MFGE supports operation from a single 3.3 V supply within its specified voltage range of 2.7 V to 5.5 V. Its internal regulators and clock generator are designed to maintain full functionality - including Flash programming, ADC conversion, and peripheral operation - across this range. At 3.3 V, the device delivers consistent 20-MHz bus performance and meets all electrical specifications in the Rev. 9 datasheet.

How many analog-to-digital converter channels does the MC9S08AC16MFGE provide?

The MC9S08AC16MFGE includes an 8-channel, 10-bit successive approximation register (SAR) ADC. Each channel supports programmable sample time, automatic comparison against configurable thresholds, and optional triggering by TPM or real-time interrupt. An internal temperature sensor is also integrated and accessible via dedicated ADC channel, enabling self-monitoring without external components.