NXP Semiconductors MC908AS60ACFNE

Overview

MC908AS60ACFNE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 60 KB on-chip Flash memory, 2 KB RAM, and integrated EEPROM-1/EEPROM-2 modules. It includes a 10-bit ADC with 16 channels, dual SPI, SCI, MSCAN, BDLC, and programmable timers-designed for automotive body control modules requiring robust nonvolatile storage and CAN bus integration.

For engineers reviewing the MC908AS60ACFNE datasheet, MC908AS60ACFNE pinout, MC908AS60ACFNE application, or MC908AS60ACFNE equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options aligned to Freescale's Rev. 6 datasheet and official ordering information.

Technical Context

The MC908AS60ACFNE implements the HCS08 CPU core with 24-bit addressing, supporting up to 20 MHz bus frequency via internal PLL-based clock generation. Its dual Flash banks (FLASH-1 and FLASH-2) enable background programming and secure code protection through block-level write/erase control registers.

It integrates two independent EEPROM modules (EEPROM-1: 512 bytes; EEPROM-2: 256 bytes), each with configurable timebase dividers and auto-programming capability. The System Integration Module (SIM) provides centralized reset management-including COP watchdog, LVI detection, and multi-source interrupt prioritization-with dedicated registers for status flag preservation during break mode.

Key Specifications

Pinout & Package

MC908AS60ACFNE is housed in a 64-pin QFP (Quad Flat Package) with 0.5 mm pitch, compliant with JEDEC MO-137AB. Pin assignments follow the standard HCS08 AS60 family layout defined in Section 1.4 of the Rev. 6 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC908AS60ACFNE, MC9S08DZ60 offers direct software compatibility and identical packaging-ideal for incremental upgrades-while S9S12G128 provides architectural scalability at the cost of full hardware redesign due to non-pin-compatible layout.

Availability

MC908AS60ACFNE is available at Aetrix Electronics and suitable for automotive body electronics, instrument clusters, and diagnostic modules requiring stable component supply and long-term industrial availability.

Supply support for MC908AS60ACFNE 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 acquired Freescale in 2015 and maintains full support for the HCS08 portfolio, including documentation, toolchains, and legacy product availability.

The MC908AS60ACFNE belongs to the HCS08 AS60 family-engineered specifically for cost-sensitive, safety-aware automotive applications demanding reliable nonvolatile memory, CAN connectivity, and robust power management.

FAQ

What is the maximum operating frequency of the MC908AS60ACFNE?

The MC908AS60ACFNE supports a maximum bus frequency of 20 MHz, achieved via its internal Phase-Locked Loop (PLL) circuit which multiplies a base crystal input (1–8 MHz) to generate the system clock. This frequency is specified under 2.7–5.5 V supply conditions and ambient temperatures ranging from –40°C to +125°C, per the Rev. 6 datasheet's Electrical Specifications chapter.

Does the MC908AS60ACFNE include hardware CAN support?

Yes, the MC908AS60ACFNE integrates a full MSCAN 2.0A/B controller with 15 message buffers, acceptance filtering, and automatic retransmission logic. It supports bit rates up to 1 Mbit/s and complies with ISO 11898-1 physical layer requirements when paired with an external CAN transceiver. CANTx and CANRx pins are dedicated I/O terminals on the 64-pin QFP package.

How much EEPROM memory does the MC908AS60ACFNE provide, and how is it organized?

The MC908AS60ACFNE provides 768 bytes of EEPROM memory split into two independent modules: EEPROM-1 (512 bytes) and EEPROM-2 (256 bytes). Each module has its own control registers, timebase dividers, and block protection scheme-allowing concurrent access and separate endurance management. Both modules guarantee ≥100,000 erase/write cycles and retain data for ≥10 years at +85°C.

What debugging interfaces are supported by the MC908AS60ACFNE?

The MC908AS60ACFNE supports on-chip debugging via the Break Module (BRK), which triggers a non-maskable interrupt and captures CPU register state upon activation. It does not include JTAG or SWD interfaces. Debugging requires the use of Freescale's BDM (Background Debug Mode) protocol through the BKGD pin, supported by legacy tools like the DEMO9S08AW60 evaluation board and CodeWarrior IDE v6.x.

Is the MC908AS60ACFNE RoHS compliant and qualified for automotive use?

Yes, the MC908AS60ACFNE is manufactured in accordance with AEC-Q100 Grade 2 qualification (–40°C to +105°C ambient), and carries RoHS-compliant packaging marked "CFNE" per Freescale's ordering nomenclature. The "CFNE" suffix denotes lead-free, green, 64-pin QFP packaging meeting automotive reliability standards including HTOL, TCT, and ESD testing per JESD22.