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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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M306V2EEFS датащи(PDF) 126 Page - Renesas Technology Corp |
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M306V2EEFS датащи(HTML) 126 Page - Renesas Technology Corp |
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126 / 271 page  Rev.1.40 Oct 06, 2004 page 126 of 269 M306V2ME-XXXFP, M306V2EEFP Figure 2.11.27 Typical transmit/receive timing in UART mode (compliant with the SIM interface) Transmit enable bit(TE) Transmit buffer empty flag(TI) Transmit register empty flag (TXEPT) D0 D1 D2 D3 D4 D5 D6 D7 ST P Start bit Parity bit The above timing applies to the following settings : • Parity is enabled. • One stop bit. • Transmit interrupt cause select bit = “1”. “0” “1” “0” “1” “0” “1” Tc = 16 (n + 1) / fi or 16 (n + 1) / f EXT fi : frequency of BRGi count source (f 1, f8, f32) fEXT : frequency of BRGi count source (external clock) n : value set to BRGi Transmit interrupt request bit (IR) “0” “1” D0 D1 D2 D3 D4 D5 D6 D7 ST P Shown in ( ) are bit symbols. Tc Transfer clock SP Stop bit Data is set in UARTi transmit buffer register SP A “L” level returns from TxD2 due to the occurrence of a parity error. The level is detected by the interrupt routine. The level is detected by the interrupt routine. Receive enable bit (RE) Receive complete flag (RI) D0 D1 D2 D3 D4 D5 D6 D7 ST P Start bit Parity bit RxD2 The above timing applies to the following settings : • Parity is enabled. • One stop bit. • Transmit interrupt cause select bit = “0”. “0” “1” “0” “1” Tc = 16 (n + 1) / fi or 16 (n + 1) / f EXT fi : frequency of BRGi count source (f 1, f8, f32) fEXT : frequency of BRGi count source (external clock) n : value set to BRGi Receive interrupt request bit (IR) “0” “1” D0 D1 D2 D3 D4 D5 D6 D7 ST P SP Shown in ( ) are bit symbols. Tc Transfer clock SP Stop bit A “L” level returns from TxD2 due to the occurrence of a parity error. TxD2 Read to receive buffer Read to receive buffer D0 D1 D2 D3 D4 D5 D6 D7 ST P Signal conductor level (Note 1) D0 D1 D2 D3 D4 D5 D6 D7 ST P SP SP D0 D1 D2 D3 D4 D5 D6 D7 ST P D0 D1 D2 D3 D4 D5 D6 D7 ST P SP SP TxD2 RxD2 Signal conductor level (Note 1) Note: Equal in waveform because TxD 2 and RxD2 are connected. Transferred from UARTi transmit buffer register to UARTi transmit register Cleared to “0” when interrupt request is accepted, or cleared by software Cleared to “0” when interrupt request is accepted, or cleared by software |
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