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Rev.2.00 Nov 28, 2005 page 149 of 378
REJ09B0124-0200
M16C/6N Group (M16C/6NK, M16C/6NM) 15. Serial Interface
Under development
This document is under development and its contents are subject to change.
15. Serial Interface
Serial interface is configured with 7 channels: UART0 to UART2 and SI/O3 to SI/O6
(1)
.
NOTE:
1. 100-pin version supports 5 channels; UART0 to UART2, SI/O3, SI/O4
128-pin version supports 7 channels; UART0 to UART2, SI/O3 to SI/O6
15.1 UARTi (i = 0 to 2)
UARTi each have an exclusive timer to generate a transfer clock, so they operate independently of each other.
Figures 15.1 to 15.3 show the block diagram of UARTi. Figure 15.4 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 (I
2
C mode)
• Special mode 2
• Special mode 3 (Bus collision detection function, IE mode)
• Special mode 4 (SIM mode) : UART2
Figures 15.5 to 15.10 show the UARTi-related registers.
Refer to tables listing each mode for register setting.