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Serial port 0 (synchronous mode) – Maxim Integrated DS80C390 User Manual

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DS80C390

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SERIAL PORT 0 (SYNCHRONOUS MODE)

TRADITIONAL 8051 OPERATION, TXD CLOCK=XTAL/12 (SM2=0)

HIGH-SPEED OPERATION, TXD CLK = XTAL/4 (SM2 = 1)