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Chapter 11 Serial Interface 0, 1
Operation
Serial Interface 1 Pin Setup (1 channel, at reception)
Table 11-3-31 shows the pin setup at UART serial interface reception with 1 channel (TXD1 pin). The
RXD1 pin is not used, so can be used as a port.
Table 11-3-31 UART Serial Interface 1 Pin Setup (1 channel, at reception)
Serial Interface 1 Pin Setup (2 channels, at transmission / reception)
Table 11-3-32 shows the pin setup at UART serial interface 1 transmission / reception with 2 channels
(TXD1 pin, RXD1).
Table 11-3-32 UART Serial Interface 1 Pin Setup (2 channels, at transmission / reception)
Data output pin Data input pin
TXD1A pin/ RXD1A pin/
TXD1B pin RXD1B pin
Port Pin P00/P73 P01/P74
Serial data output "1" input
SC0MD1(SC0SBOS) SC0MD1(SC0SBIS)
Output mode
P0DIR (P0DIR0)
P7DIR (P7DIR3)
-
-
Note) Select pull-up/down resistor with P7RDOWN flag of FLOAT register (x'03F2E')
Style -
Setup item
Port Pin Setup
TXD / RXD pin Setup
Function
SC1ODC (SC1SEL)
Select used pin (A, B)
TXD0/RXD0 pin independent/connection
SC0MD1 (SC0IOM)
[ Chapter4, 4.7.2 Register ]
-
-
I/O
Pull-up (Pull-down) setup
Data output pin Data input pin
TXD1A pin/ RXD1A pin/
TXD1B pin RXD1B pin
Port Pin P00/P73 P01/P74
Serial data output "1" input
SC0MD1(SC0SBOS) SC0MD1(SC0SBIS)
Push-pull /
Nch open-drain
SC1ODC (SC1ODC0)
SC1ODC (SC1ODC2)
Output mode input mode
P0DIR (P0DIR0) P0DIR (P0DIR1)
P7DIR (P7DIR3) P7DIR (P7DIR4)
Add/Not Add
P0PLU (P0PLU0)
P7PLUD(P7PLUD3)
-
I/O
Pull-up (Pull-down) setup -
Style
Setup item
Port Pin Setup
Select used pin (A, B)
SC1DC (SC1SEL)
TXD / RXD pin Setup
TXD0/RXD0 pin independent/connection
SC0MD1 (SC0IOM)
Function