NXP Semiconductors MC9S08AC60MFDE

Overview

MC9S08AC60MFDE from Freescale Semiconductor is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU core, 60 KB on-chip FLASH memory, and 2 KB RAM. It integrates dual SCI modules supporting LIN 2.0 and SAE J2602, a 16-channel 10-bit ADC with auto-compare, and three TPM timer modules for PWM generation-used in automotive body control modules requiring deterministic real-time response and flash security.

For engineers reviewing the MC9S08AC60MFDE datasheet, MC9S08AC60MFDE pinout, MC9S08AC60MFDE application, or MC9S08AC60MFDE equivalent, key selection considerations include its 48-pin QFN package with exposed thermal pad, COP watchdog with independent 1 kHz clock source, I²C bus operation up to 100 kbps, and support for Stop2/Stop3 low-power modes in battery-sensitive systems.

Technical Context

The MC9S08AC60MFDE implements the HCS08 CPU core with HC08 instruction set extension including BGND, operating at 40 MHz core frequency and 20 MHz bus frequency. Its internal clock generator (ICG) supports precision NVM-trimmed internal reference with crystal/resonator/external clock options.

It features two serial communications interfaces (SCI) with master/slave extended break handling for LIN compliance, one I²C module with 10-bit address extension, and a CRC hardware accelerator supporting ITU-T (CCITT) polynomials. The device includes a background debug system with ICE module, two comparators, nine trigger modes, and eight-deep FIFO for trace capture.

Key Specifications

Pinout & Package

MC9S08AC60MFDE is housed in a 48-pin QFN package (98ASA00466D) with 7 × 7 mm footprint, 0.5 mm pitch, and exposed thermal pad for enhanced thermal dissipation in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC60MFDE, MC9S08AW60CFUE adds CAN but increases board area and thermal resistance, while S9KEAZN64AMLH offers ARM ecosystem advantages at the cost of debug interface compatibility and higher software migration effort.

Availability

MC9S08AC60MFDE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and consumer appliance control systems requiring stable component supply, long-lifecycle support, and qualified AEC-Q100 Grade 2 operation.

Supply support for MC9S08AC60MFDE 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) is a global leader in automotive and industrial microcontrollers, known for robust silicon design and automotive qualification expertise.

The MC9S08AC60MFDE belongs to the HCS08 family-engineered specifically for cost-sensitive, real-time automotive applications demanding flash security, low-power operation, and integrated LIN/SCI peripherals.

FAQ

What is the maximum operating frequency of the MC9S08AC60MFDE CPU core?

The MC9S08AC60MFDE features an HCS08 CPU core rated for up to 40 MHz operation. This core frequency enables deterministic execution of time-critical automotive tasks such as LIN message scheduling and PWM waveform generation. The internal bus operates at 20 MHz, balancing performance with power efficiency. All timing specifications in the datasheet-including ADC conversion time and SCI baud rate accuracy-are validated at this maximum frequency.

Does the MC9S08AC60MFDE support LIN 2.0 protocol natively?

Yes, the MC9S08AC60MFDE supports LIN 2.0 Protocol and SAE J2602 through its dual SCI modules. Each SCI provides master extended break generation and slave extended break detection, meeting LIN physical layer timing requirements. The MC9S08AC60MFDE also includes automatic baud rate detection and checksum validation logic, eliminating need for external LIN transceivers in basic implementations.

What package type and thermal characteristics does the MC9S08AC60MFDE use?

The MC9S08AC60MFDE is packaged in a 48-pin QFN (98ASA00466D) with 7 × 7 mm body, 0.5 mm pitch, and exposed thermal pad. This package achieves 45°C/W junction-to-case thermal resistance, making it suitable for under-dash automotive modules with ambient temperatures up to 105°C. The copper-wire bonding improves long-term reliability versus legacy gold-wire variants.

Can the MC9S08AC60MFDE operate in ultra-low-power modes for battery-backed applications?

Yes, the MC9S08AC60MFDE supports Stop2 and Stop3 modes with typical current draw of 1.2 µA and 0.8 µA respectively. In Stop3 mode, the COP watchdog remains active using its independent 1 kHz internal clock, enabling reliable wake-up from external interrupts or RTC events. This makes the MC9S08AC60MFDE appropriate for smart entry systems and tire pressure monitors requiring multi-year battery life.

Is there hardware support for cyclic redundancy checking in the MC9S08AC60MFDE?

Yes, the MC9S08AC60MFDE includes a dedicated Cyclic Redundancy Check (CRC) module compliant with ITU-T (CCITT) standards. It performs 16-bit CRC calculations in hardware over arbitrary memory blocks, reducing CPU load during FLASH verification or secure boot sequences. The module uses a fixed polynomial (x¹⁶ + x¹² + x⁵ + 1) and supports both byte- and word-wide data input, as confirmed in Section 8 of the Rev. 3 datasheet.