MB90220 Series
10
(Continued)
Pin no.
Pin name
Circuit
type
Function
71
PB7
E
General-purpose I/O port
This function is always valid.
SID2
UART0-2 serial data input pin
During UART0-2 input operations, this input may be used suddenly at
any time; therefore, it is necessary to stop output by other functions
on this pin, except when using it for output deliberately.
72
PC0
E
General-purpose I/O port
This function is valid when the UART0-2 clock output specification is
“disabled”.
SCK2
UART0-2 clock output pin
The clock output function is valid when the UART0-2 clock output
specification is “enabled”.
UART0-2 external clock input pin
This function is valid when the port is in input mode and the UART0-2
specification is external clock mode.
73
PC1
E
General-purpose I/O port
This function is valid when the UART1 serial data output specification
is “disabled”.
SOD3
UART1 serial data output pin
This function is valid when the UART1 serial data output specification
is “enabled”.
74
PC2
E
General-purpose I/O port
This function is always valid.
SID3
UART1 serial data input pin
During UART1 input operations, this input may be used suddenly at
any time; therefore, it is necessary to stop output by other functions
on this pin, except when using it for output deliberately.
75
PC3
E
General-purpose I/O port
This function is valid when the UART1 clock output specification is
“disabled”.
SCK3
UART1 clock output pin
The clock output function is valid when the UART1 clock output
specification is “enabled”.
UART1 external clock input pin
This function is valid when the port is in input mode and the UART1
specification is external clock mode.
76
PC4
E
General-purpose I/O port
This function is always valid.
CTS0
UART0-0 Clear To Send input pin
When the UART0-0 CTS function is enabled, this input may be used
suddenly at any time; therefore, it is necessary to stop output by other
functions on this pin, except when using it for output deliberately.