NXP Semiconductors MC9S08AW60CFUER

Overview

MC9S08AW60CFUER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 60 KB on-chip Flash, 2 KB RAM, and a 40-MHz CPU core. It integrates dual SCI, SPI, I²C, two 16-bit TPM modules (totaling 8 PWM channels), a 16-channel 10-bit ADC, and keyboard interrupt support - deployed in automotive body control modules for door lock actuation and lighting sequencing.

For engineers reviewing the MC9S08AW60CFUER datasheet, MC9S08AW60CFUER pinout, MC9S08AW60CFUER application, or MC9S08AW60CFUER equivalent, key selection criteria include QFN-48 package compatibility, 20-MHz bus frequency timing constraints, COP watchdog behavior, BDM debug interface requirements, and Flash security options for firmware protection in production ECUs.

Technical Context

The MC9S08AW60CFUER implements the S08CPUV2 core with HC08 instruction set extension including BGND, supporting single-wire background debug mode and real-time in-circuit emulation with nine trigger modes and bus capture buffer. Its internal clock generator (S08ICGV4) supports FEI, FEE, FBE, and SCM modes with NVM-trimmed precision oscillator and optional external crystal (32 kHz to 8 MHz).

Peripherals are memory-mapped and synchronized to the 20-MHz bus clock: the dual SCI modules support 13-bit break detection; the I²C module operates up to 100 kbps under full bus loading; and the ADC includes automatic compare function with temperature sensor input - all accessible via dedicated register sets defined in the data sheet.

Key Specifications

Pinout & Package

MC9S08AW60CFUER is housed in a 48-pin QFN package (98ASA00466D) with 5×5 mm body, 0.5 mm pitch, and exposed thermal pad. The package uses copper wire bonding per Freescale QFN migration addendum Rev. 0 (July 2014).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AW60CFUER, the S9KEAZN64AMLH offers higher performance and modern peripherals but requires architectural rework, while the MC9S08AC60CFUE retains instruction compatibility but sacrifices I/O flexibility and integrated keyboard interrupt capability - making MC9S08AW60CFUER optimal for legacy-compatible, feature-rich automotive body nodes.

Availability

MC9S08AW60CFUER is available at Aetrix Electronics and suitable for automotive body electronics, industrial control panels, and smart appliance subsystems requiring stable component supply across extended product lifecycles.

Supply support for MC9S08AW60CFUER 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 company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The HCS08 family - including MC9S08AW60CFUER - was designed for cost-sensitive, real-time automotive body electronics requiring robust debug, Flash security, and mixed-signal integration in compact QFN packages.

FAQ

What is the package type and thermal pad configuration for MC9S08AW60CFUER?

The MC9S08AW60CFUER uses a 48-pin QFN package (98ASA00466D) with 5×5 mm body, 0.5 mm pitch, and exposed thermal pad. Per Freescale EB806 guidelines, the thermal pad must be soldered to a solid copper plane with ≥4 thermal vias for reliable thermal dissipation in automotive ambient conditions. This configuration ensures junction temperature remains within spec under continuous 20-MHz bus operation.

Does MC9S08AW60CFUER support crystal oscillators above 4 MHz?

Yes, MC9S08AW60CFUER supports external crystals up to 8 MHz per the Internal Clock Generator (S08ICGV4) specification. The device's ICG allows FLL engagement in FEE mode to generate a stable 20-MHz bus clock from an 8-MHz crystal - confirmed in Example #2 of the data sheet (Rev 2, Section 8.5.3). Operation beyond 8 MHz requires external clock input, not crystal resonance.

How many interrupt sources does MC9S08AW60CFUER support, and are they prioritized?

MC9S08AW60CFUER supports up to 32 interrupt/reset sources with fixed hardware priority encoded in vector table order. Each source maps to a unique vector address between $FF80–$FFFF, and the CPU automatically pushes registers and branches to the corresponding ISR. Priority is non-maskable for RESET and COP, while lower-priority interrupts may be disabled globally via CCR register or individually using peripheral mask bits - as documented in Chapter 5 of the data sheet.

Can MC9S08AW60CFUER operate in stop mode while maintaining RTC or low-power timer functionality?

No, MC9S08AW60CFUER does not include a dedicated real-time clock (RTC) module. In Stop2 and Stop3 modes, only the low-voltage detect (LVD) and computer operating properly (COP) modules remain active - no timer or counter continues running. Wake-up is supported via IRQ, BKGD, or LVD events, but timekeeping requires external circuitry or periodic wake-and-sleep cycles using the real-time interrupt (RTI) module in Wait mode.

Is Flash security on MC9S08AW60CFUER reversible after programming?

Flash security on MC9S08AW60CFUER is irreversible once enabled: setting the SEC bit in FOPT disables further Flash read/write access and prevents mass erase unless unsecured via BDM command before final programming. The data sheet (Section 4.5) confirms that secured devices require complete Flash erase - which is blocked - making security a one-time commitment aligned with automotive firmware IP protection requirements.