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Motorola provides two different parts to easily migrate your currentMC68HC705K1 (K1) application. Depending on your design, systemenhancements, and cost, the MC68HC805K3 (K3) and theMC68HC705KJ1 (KJ1) provide two different migration paths.The major differences between the K3 and the KJ1 are:• Price• Pinout compatibilityThe K3 is pin for pin the same as the K1 but is roughly 90% the cost ofthe K1. Although the KJ1 is not pin for pin the same as the K1, it isroughly 70% the cost of the K1.