M16C62_N Datasheet, PDF (366/621 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY

UART
Mitsubishi microcomputers
M16C / 62 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(e) Bus collision detection function
This function is to sample the output level of the TxD pin and the input level of the RxD pin at the
rising edge of the transfer clock; if their values are different, then an interrupt request occurs.
The following are examples in which functions (a) to (e) are chosen:
_______
• Transmission WITH: CTS function, WITHOUT: other functions ............................................... P358
_______
• Reception WITH: RTS function, WITHOUT: other functions .................................................... P362
Also, the SIM interface is used by adding some extra settings in UART2's clock-asynchronous serial
I/O mode. Direct or inverse format is selected by connecting SIM card.
• Transmission WITH: direct format ............................................................................................ P366
• Reception WITH: direct format ................................................................................................. P370
(6) Input to the serial I/O and the direction register
To input an external signal to the serial I/O, set the direction register of the relevant port to input.
(7) Pins related to the serial I/O
_________ _________ __________
• CTS0, CTS1, CTS2 pins
_________ _________ _________
• RTS0, RTS1, RTS2 pins
_______
:Input pins for the CTS function
_______
:Output pins for the RTS function
• CLK0, CLK1 pins
:Input pins for the transfer clock
• RxD0, RxD1, RxD2 pins
:Input pins for data
• TxD0, TxD1, TxD2 pins
:Output pins for data
Since TxD2 pin is N-channel open drain, this pin needs pull-up resistor.
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