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Chapter 11 Serial Interface 0, 1
XI - 54
Operation
11-3-6 Serial interface 0 UART Serial Interface Pin Setup
Serial Interface 0 Pin Setup (1, 2 channels, at transmission)
Table 11-3-25 shows the pins setup at UART serial interface 0 transmission. The pins setup is common
to the TXD0 pin, RXD0 pin, regardless of those pins are independent / connected.
Serial Interface 0 Pin Setup (2 channels, at reception)
Table 11-3-26 shows the pins setup at UART serial interface 0 reception with 2 channels (TXD0 pin,
RXD0 pin).
Table 11-3-26 UART Serial Interface 0 Pin Setup (2 channels, at reception)
Table 11-3-25 UART Serial Interface 0 Pin Setup (1, 2 channels, at transmission)
Data output pin Data input pin
TXD0A pin/ RXD0A pin/
TXD0B pin RXD0B pin
Port Pin P03/P70 P04/P71
Serial data output "1" input
SC0MD1(SC0SBOS) SC0MD1(SC0SBIS)
Push-pull /
Nch open-drain
SC0ODC (SC0ODC0)
SC0ODC (SC0ODC2)
Output mode
P0DIR (P0DIR3)
P7DIR (P7DIR0)
Add/Not Add
P0PLU (P0PLU3)
P7PLUD(P7PLUD0)
Style -
Setup item
Port Pin Setup
TXD / RXD pin Setup
Function
SC0ODC (SC0SEL)
Select used pin (A, B)
TXD0/RXD0 pin independent/connection
SC0MD1 (SC0IOM)
Note) Select pull-up/down resistor with P7RDOWN flag of FLOAT register (x'03F2E')
[ Chapter4, 4.7.2 Register ]
-
-
I/O
Pull-up (Pull-down) setup
Data output pin Data input pin
TXD0A pin/ RXD0A pin/
TXD0B pin RXD0B pin
Port Pin P03/P70 P04/P71
Port Serial data input
SC0MD1(SC0SBOS) SC0MD1(SC0SBIS)
Push-pull /
Nch open-drain
SC0ODC (SC0ODC0)
SC0ODC (SC0ODC2)
input mode
P0DIR (P0DIR4)
P7DIR (P7DIR1)
-
-
-
I/O
Pull-up (Pull-down) setup -
Style
Setup item
Port Pin Setup
Select used pin (A, B)
SC0ODC (SC0SEL)
TXD / RXD pin Setup
TXD0/RXD0 pin independent/connection
SC0MD1 (SC0IOM)
Function