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© Freescale Semiconductor, Inc., 2007. All rights reserved.
Freescale Semiconductor
Product Brief
MC9S12XS256PB
Rev. 4, 11-Nov-2008
MC9S12XS-Family
Low Cost 16-Bit Microcontroller Family
Covers MC9S12XS256, MC9S12XS128 and MC9S12XS64
Introduction
The new MC9S12XS-Family of 16-Bit micro controllers is a compatible, reduced version of the
MC9S12XE-Family. These families provide an easy approach to develop common platforms from low-
end to high-end applications, minimizing the redesign of software and hardware.
Targeted at generic automotive applications and slave CAN nodes, some typical examples of these
applications are: Body Controllers, Occupant Detection, Door Modules, RKE Receivers, Smart Actuators,
Lighting Modules and Smart Junction Boxes amongst many others. For space-constrained applications,
these products are also available in die format.
The MC9S12XS-Family retains many of the features of the S12XE-Family including Error Correction
Code (ECC) on Flash memory, a separate Data-Flash Module for code or data storage, a Frequency
Modulated Locked Loop (IPLL) that improves the EMC performance and a fast ATD converter.
MC9S12XS-Family will deliver 32-Bit performance with all the advantages and efficiencies of a 16-Bit
MCU. It will retain the low cost, power consumption, EMC and code-size efficiency advantages currently
enjoyed by users of Freescale’s existing 16-Bit MC9S12 and S12X MCU families. Like members of other
S12X families, the MC9S12XS-Family will run 16-Bit wide accesses without wait states for all peripherals
and memories.
