M306H5MG-XXXFP Datasheet, PDF (108/324 Pages) Renesas Technology Corp – SNGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H5MG-XXXFP/MC-XXXFP/FGFP
2.11 Serial I/O
Serial I/O is configured with five channels: UART0 to UART2, SI/O3 and SI/O4.
2.11.1 UARTi (i=0 to 2)
UARTi each have an exclusive timer to generate a transfer clock, so they operate independently of each
other.
Figure 2.11.1 shows the block diagram of UARTi. Figures 2.11.2 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).
• Special mode 1 (I²C mode)
• Special mode 2
• Special mode 3 (Bus collision detection function, IE mode) : UART0, UART1
• Special mode 4 (SIM mode) : UART2
Figures 2.11.3 to 2.11.8 show the UARTi-related registers.
Refer to tables listing each mode for register setting.
Rev.1.20 Dec 13, 2005 page 108 of 323
REJ03B0095-0100Z