M16C6K7 Datasheet, PDF (105/285 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Rev.1.0
SCelorciakl _{sI/yOnchronous serial I/O mode}
Mitsubishi microcomputers
M16C / 6K7 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Table.GA-4 lists the functions of the input/output pins during clock synchronous serial I/O mode. This table
_______ _______
shows the pin functions that the transfer clock output from multiple pins and the separation of CTS/RTS pins
are not selected. Note that for a period from when the UARTi operation mode is selected to when transfer
starts, the TxDi pin outputs a “H”. (If the N-channel open-drain is selected, this pin is in floating state.)
Table.GA-4 Input/output pin functions in clock synchronous serial I/O mode
(The function that the transfer clock output from multiple pin is not selected. The function that separates
CTS/RTS pins is not selected.)
Pin name
Function
Method of selection
TxDi
Serial data output
(P63,P67,P70)
(Outputs dummy data when performing reception only)
RxDi
Serial data input
(P62,P66,P71)
Port P62, P66 and P71 direction register (bits 2 and 6 at address 03EE16,
bit 1 at address 03EF16)= “0”
(Can be used as an input port when performing transmission only)
CLKi
Transfer clock output
(P61,P65,P72)
Transfer clock input
Internal/external clock select bit (bit 3 at address 03A016, 03A816, 037816) = “0”
Internal/external clock select bit (bit 3 at address 03A016, 03A816, 037816) = “1”
Port P61, P65 and P72 direction register (bits 1 and 5 at address 03EE16,
bit 2 at address 03EF16) = “0”
CTSi/RTSi
CTS input
(P60,P64,P73)
CTS/RTS disable bit (bit 4 at address 03A416, 03AC16, 037C16) =“0”
CTS/RTS function selection bit (bit 2 at address 03A416, 03AC16, 037C16) = “0”
The corresponding port direction bit = “0”
RTS output
CTS/RTS disable bit (bit 4 at address 03A416, 03AC16, 037C16) = “0”
CTS/RTS function selection bit (bit 2 at address 03A416, 03AC16, 037C16) = “1”
Programmable I/O port CTS/RTS disable bit (bit 4 at address 03A416, 03AC16, 037C16) = “1”
104