Samsung S3F80JB - Manual (Page 346)

S3F80JB Important Note
4
¾ When S3F80J9
On S3F80J9, address & data port is different from S3F80JB. Because the 28-SOP type doesn’t have port1.4~1.7,
port1.0~1.3 and port2.4~2.7 are used to address & data port. (S3F80J9 is supported to 32-SOP and 28-SOP
type.)
4. NOTICE
When serial writing programming on S3F80JB, port1.4,1.5,1.6,1.7 should be floating node or not connected to any
device effected to damage by toggling.
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