Panasonic F77G User Manual page 381

Serial Interface 0 Pin Setup (1 channel, at reception)
Table 11-3-27 shows the pin setup at UART serial interface 0 reception with 1 channel (TXD0 pin). The
RXD0 pin is not used, so can be used as a port.
Table 11-3-27
Serial Interface 0 Pin Setup (2 channels, at transmission / reception)
Table 11-3-28 shows the pin setup at UART serial interface 0 transmission / reception with 2 channels
(TXD0 pin, RXD0).
Table 11-3-28 UART Serial Interface 0 Pin Setup (2 channels, at transmission / reception)
UART Serial Interface 0 Pin Setup (1 channel, at reception)
Setup item
Port Pin
Port Pin Setup
TXD / RXD pin Setup
Serial data output
Function
SC0MD1(SC0SBOS)
Style
I/O
Pull-up (Pull-down) setup
Setup item
Port Pin
Port Pin Setup
TXD / RXD pin Setup
Serial data output
Function
SC0MD1(SC0SBOS)
Style
SC0ODC (SC0ODC0)
SC0ODC (SC0ODC2)
I/O
P0DIR (P0DIR3)
P7DIR (P7DIR0)
Pull-up (Pull-down) setup
P0PLU (P0PLU3)
P7PLUD(P7PLUD0)
Note) Select pull-up/down resistor with P7RDOWN flag of FLOAT register (x'03F2E')
[ Chapter4, 4.7.2 Register ]
Data output pin Data input pin
TXD0A pin/ RXD0A pin/
TXD0B pin RXD0B pin
P03/P70 P04/P71
Select used pin (A, B)
SC0ODC (SC0SEL)
TXD0/RXD0 pin independent/connection
SC0MD1 (SC0IOM)
"1" input
SC0MD1(SC0SBIS)
- -
Input mode
-
P0DIR (P0DIR3)
P7DIR (P7DIR1)
- -
Data output pin Data input pin
TXD0A pin/ RXD0A pin/
TXD0B pin RXD0B pin
P03/P70 P04/P71
Select used pin (A, B)
SC0ODC (SC0SEL)
TXD0/RXD0 pin independent/connection
SC0MD1 (SC0IOM)
"1" input
SC0MD1(SC0SBIS)
Push-pull /
Nch open-drain
-
Output mode Input mode
P0DIR (P0DIR4)
P7DIR (P7DIR1)
Add/Not Add
-
Chapter 11 Serial Interface 0, 1
XI - 55
Operation