Serial I/O; Uarti (I = 0 To 2) - Renesas M16C/60 Series Hardware Manual

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M16C/6N5 Group

Serial I/O

Serial I/O is configured with four channels: UART0 to UART2 and SI/O3.

UARTi (i = 0 to 2)

Each UARTi has an exclusive timer to generate a transfer clock, so they operate independently of each
other.
Figure 1.15.1 shows the block diagram of UARTi. Figures 1.15.2 shows the block diagram of the UARTi
transmit/receive.
UARTi has the following modes:
• Clock synchronous serial I/O mode
• Clock asynchronous serial I/O mode (UART mode).
2
• Special mode 1 (I C mode)
• Special mode 2
• Special mode 3 (Bus collision detection function, IE mode) : UART0, UART1
• Special mode 4 (SIM mode) : UART2
Figures 1.15.3 to 1.15.8 show the UARTi-related registers.
Refer to tables listing each mode for register setting.
Rev.1.00 2003.05.30 page 133
Serial I/O