DS87C550 Datasheet, PDF (45/50 Pages) Dallas Semiconductor – EPROM High-Speed Micro with A/D and PWM

SERIAL PORT MODE 0 TIMING
SERIAL PORT 0 (SYNCHRONOUS MODE)
HIGH SPEED OPERATION SM2=1=>TXD CLOCK=XTAL/4
SERIAL PORT 0 (SYNCHRONOUS MODE)
SM2=0=>TXD CLOCK=XTAL/12
DS87C550
45 of 50