NXP Semiconductors MC9S08AC48CFGER

Overview

MC9S08AC48CFGER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 48 KB flash, 1 KB RAM, and 48-pin QFN package. It features a 40-MHz CPU, dual SCI modules supporting LIN 2.0, 16-channel 10-bit ADC, and hardware CRC engine - deployed in automotive body control modules for door lock actuation and window lift sequencing.

For engineers reviewing the MC9S08AC48CFGER datasheet, MC9S08AC48CFGER pinout, MC9S08AC48CFGER application, or MC9S08AC48CFGER equivalent, key selection criteria include QFN-48 copper-wire packaging compatibility, on-chip debug support with BDM interface, LIN-capable SCI timing accuracy, and FLASH security options for firmware protection in production ECUs.

Technical Context

The MC9S08AC48CFGER implements the S08CPUV2 core with HC08 instruction set extension including BGND, operating at up to 40 MHz CPU frequency and 20 MHz bus clock. Its internal clock generator (ICG) supports precision NVM-trimmed internal reference with crystal/resonator/external clock options.

Peripherals include two SCI modules compliant with SAE J2602 and LIN 2.0, a 16-channel 10-bit ADC with automatic compare, three TPM timer modules (two 2-channel + one 6-channel), I²C up to 100 kbps, SPI, and keyboard interrupt (KBI) with up to 8 pins - all accessible via software-configurable I/O with slew rate, drive strength, and pullup control.

Key Specifications

Pinout & Package

MC9S08AC48CFGER uses a 48-pin QFN package (case outline 98ASA00466D), measuring 7 mm × 7 mm × 0.85 mm with 0.5 mm pitch and thermally enhanced exposed pad. Pin assignment follows Freescale's standard HCS08 AC-series layout for signal grouping, power distribution, and debug access.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC48CFGER, S9KEAZN64ACLH delivers higher compute density but increases software validation scope, while MC9S08AC60CFGER provides seamless FLASH capacity upgrade within identical hardware and firmware constraints.

Availability

MC9S08AC48CFGER is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, and medical device control requiring stable component supply across long-life production programs.

Supply support for MC9S08AC48CFGER 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, with roots in Freescale's embedded MCU heritage.

The HCS08 AC-series - including MC9S08AC48CFGER - was designed for cost-sensitive, high-reliability automotive body control units requiring LIN communication, analog sensing, and robust debug capability in compact QFN packaging.

FAQ

What is the maximum operating frequency of the MC9S08AC48CFGER CPU core?

The MC9S08AC48CFGER features the HCS08 S08CPUV2 core with a maximum CPU frequency of 40 MHz. Its internal bus operates at up to 20 MHz, and clock sources include precision-trimmed internal reference, crystal, resonator, or external clock - all configurable via the Internal Clock Generator (ICG) module per the MC9S08AC48CFGER datasheet Section 10.

Does the MC9S08AC48CFGER support LIN 2.0 communication natively?

Yes, the MC9S08AC48CFGER includes two SCI modules explicitly certified for LIN 2.0 Protocol and SAE J2602 compliance. Each SCI supports master extended break generation and slave extended break detection, enabling direct integration into LIN cluster networks without external protocol translators - as confirmed in the MC9S08AC48CFGER data sheet Section 13.

What package type and thermal characteristics does the MC9S08AC48CFGER use?

The MC9S08AC48CFGER uses a 48-pin QFN package (case outline 98ASA00466D), migrated from gold to copper wire bonding per Freescale QFN Addendum Rev. 0 (2014). It features a 7 mm × 7 mm body, 0.5 mm pitch, and exposed thermal pad for enhanced heat dissipation in automotive under-hood environments.

Can the MC9S08AC48CFGER perform hardware CRC calculations?

Yes, the MC9S08AC48CFGER integrates a dedicated Cyclic Redundancy Check (CRC) module (S08CRCV1) capable of computing 16-bit CRC values in hardware. This accelerates memory integrity verification during boot or firmware update without CPU intervention - documented in MC9S08AC48CFGER data sheet Chapter 8 and register map Section 8.3.

How much Flash and RAM memory does the MC9S08AC48CFGER provide?

The MC9S08AC48CFGER provides 48 KB of on-chip FLASH memory with security lock and block protection features, plus 1 KB of on-chip RAM. These memory resources are optimized for real-time control firmware with integrated diagnostics, calibration data, and bootloader space - consistent with the MC9S08AC48CFGER family specification in Rev. 3 (2011) data sheet Section 4.