Replacing 68HC11KA4/KA2 MCUs with 68HC11KS2/KS8 MCUs Engineering Bulletin

PublishTime：2021-11-23

The information in this engineering bulletin is presented to users of the 68HC11KAx Family (KA4/KA2) microcontrollers (MCUs) who are considering converting to the 68HC11KSx Family MCUs (KS2/KS8).
The 68HC11KSx Family was designed to provide more ROM and RAM for KA4 users. Also, a software selectable slow mode feature to reduce power consumption has been added.
Both device families have the same pinouts in the 68-pin PLCC (plastic leaded chip carrier) and 80-pin TQFP (thin quad flat pack) packages.
The 68HC11KSx MCUs have enhancements requiring special design considerations.
Table 1 lists the major features of each device in the families.

Brand of Product：	NXP
Part#：	68HC11KA4 、 68HC11KA2 、 68HC11KS2 、 68HC11KS8 、 68HC11KAx Family 、 68HC11KAx More Part#
Product Category：	MCUs 、 microcontrollers More
Application：	More
Data Type：	Technical Documentation More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	PLCC;TQFP
Language：	English Chinese Chinese and English Japanese
Date of Creation：	1999
Version Number：
Data Encoding：	EB312
Data Size：	287 KB

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