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Migrating from the MC68HC705K1 to the MC68HC705KJ1
By Mark Glenewinkel
Field Applications Engineering
Consumer Systems Group
Austin, Texas
Introduction
Freescale provides two different parts to migrate your current
MC68HC705K1 (K1) application easily. Depending on your design,
system enhancements, and cost, the MC68HC705KJ1 (KJ1) and the
MC68HC805K3 (K3) provide two different migration paths.
The major differences between the KJ1 and the K3 are:
•
•
Price
Pinout compatibility
The KJ1 is not pin for pin the same as the K1, but it is roughly 70% the
cost of the K1. Although the K3 is pin for pin the same as the K1, it is
roughly 90% the cost of the K1.
This application note illustrates the differences between the K1 and the
KJ1. Using the KJ1’s additional features can further enhance your
system design. Consult the K1 and KJ1 databooks for detailed design
reference. See
in this application
note.
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