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HD6433713 Datasheet(PDF) 186 Page - Renesas Technology Corp |
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HD6433713 Datasheet(HTML) 186 Page - Renesas Technology Corp |
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186 / 324 page  Section 10 SCI1 10.1 Overview Serial communication interface 1 (SCI1) performs synchronous serial transfer of 8-bit or 16-bit data. 10.1.1 Features SCI1 features are as follows. • Choice of 8-bit or 16-bit data transfer • Choice of eight internal clock sources ( φ/1024, φ/256, φ/64, φ/32, φ/16, φ/8, φ/4, φ/2) or an external clock • Interrupts requested at completion of transfer or when error occurs 10.1.2 Block Diagram Figure 10-1 shows a block diagram of SCI1. Figure 10-1 Block Diagram of SCI1 φ Prescaler S (13 bits) SMR1 Octal/Hexadecimal counter 1 (3 or 4 bits) SPR1 SDRL1 SDRU1 SCK IRRS1 SO SI 1 1 1 Notation: SMR1: SPR1: SDRL1: SDRU1: IRRS1: Serial mode register 1 Serial port register 1 Serial data register L1 Serial data register U1 Serial communication interface 1 interrupt request flag (interrupt request register 3) 175 |
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