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UPSD3253 Datasheet(PDF) 66 Page - STMicroelectronics |
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UPSD3253 Datasheet(HTML) 66 Page - STMicroelectronics |
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66 / 176 page  µPSD325X DEVICES 66/176 Figure 28. Serial Port Mode 0, Waveforms Figure 29. Serial Port Mode 1, Block Diagram AI06825 Write to SBUF Send Shift RxD (Data Out) TxD (Shift Clock) T Write to SCON RI Receive Shift RxD (Data In) TxD (Shift Clock) S6P2 S3P1 S6P1 Clear RI Receive Transmit D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 AI06826 Zero Detector Internal Bus Tx Control Rx Control Internal Bus SBUF Write to SBUF Read SBUF Load SBUF SBUF Input Shift Register Shift Serial Port Interrupt Rx Clock Start Tx Clock Start Shift Shift Send Load SBUF TI RI CL DS Q 1FFh TxD Data Rx Detector RxD 1-to-0 Transition Detector ÷16 Sample ÷16 ÷2 TB8 Timer1 Overflow Timer2 Overflow 0 01 1 01 TCLK RCLK SMOD |
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