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7643 Datasheet(PDF) 170 Page - Renesas Technology Corp |
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7643 Datasheet(HTML) 170 Page - Renesas Technology Corp |
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170 / 424 page  Rev.2.00 Aug 28, 2006 page 49 of 202 7643 Group REJ09B0133-0200 APPLICATION 2.4 UART Fig. 2.4.13 Connection diagram Specifications : •Transmitter: UART is used. •Receiver: UART is used. • Transfer bit rate : 9600 bps ( φ = 12 MHz divided by 1248) • Data format: 1ST-8DATA-2SP •Use of CTS and RTS functions • 2-byte data is transferred from the transmitting side to the receiving side at intervals of 10 ms generated by the timer. Fig. 2.4.14 Timing chart 2.4.6 UART application example (1) Data output (control of peripheral IC) Outline : Data is transmitted and received, using the UART. Figure 2.4.13 shows a connection diagram, and Figure 2.4.14 shows a timing chart. P84/UTXD P85/URXD P87/RTS P84/UTXD P85/URXD P86/CTS Transmitting side 7643 group Receiving side 7643 group P84/UTXD ST D0 D1 D2 D3 D4 D5 D6 D7 SP(2) ST D0 D1 D2 D3 D4 D5 D6 D7 SP(2) ST D0 10 ms P86/CTS ••• |
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