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H8/3003 数据表(PDF) 448 Page - Renesas Technology Corp |
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H8/3003 数据表(HTML) 448 Page - Renesas Technology Corp |
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448 / 715 page ![]() Bit 7—Communication Mode (C/ A): Selects whether the SCI operates in asynchronous or synchronous mode. Bit 7 C/ A Description 0 Asynchronous mode (Initial value) 1 Synchronous mode Bit 6—Character Length (CHR): Selects 7-bit or 8-bit data length in asynchronous mode. In synchronous mode the data length is 8 bits regardless of the CHR setting. Bit 6 CHR Description 0 8-bit data (Initial value) 1 7-bit data* Note: * When 7-bit data is selected, the MSB (bit 7) in TDR is not transmitted. Bit 5—Parity Enable (PE): In asynchronous mode, this bit enables or disables the addition of a parity bit to transmit data, and the checking of the parity bit in receive data. In synchronous mode the parity bit is neither added nor checked, regardless of the PE setting. Bit 5 PE Description 0 Parity bit not added or checked (Initial value) 1 Parity bit added and checked* Note: * When PE is set to 1, an even or odd parity bit is added to transmit data according to the even or odd parity mode selected by the O/ E bit, and the parity bit in receive data is checked to see that it matches the even or odd mode selected by the O/ E bit. 430 |
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