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(2) P10 to P15 (Port 1) ∙∙∙ 3-state I/O
Port 1 is a 6-bit I/O port in which input and output can be specified in 1-bit units.
P10 to P15 can function as I/O port pins and can also operate as input or output pins for the serial interface.
Port/control mode can be selected for each bit.
P10 to P12, P14, and P15 can select normal output and N-ch open-drain output.
(a) Port mode
P10 to P15 can be set in 1-bit units as input or output pins according to the contents of the port 1 mode
register (PM1).
(b) Control mode
(i)
SI0, SI1 (Serial Input 0, 1) ∙∙∙ input
These are the serial receive data input pins of CSI0 and CSI1.
(ii) SO0, SO1 (Serial Output 0, 1) ∙∙∙ output
These are the serial transmit data output pins of CSI0 and CSI1.
(iii) SCK0, SCK1 (Serial Clock 0, 1) ∙∙∙ 3-state I/O
These are the serial clock I/O pins for CSI0 and CSI1.
(iv) SDA0 (Serial Data 0) ∙∙∙ I/O
This is the serial transmit/receive data I/O pin for I
(v) SCL0 (Serial Clock 0) ∙∙∙ I/O
This is the serial clock I/O pin for I
(vi) RXD0 (Receive Data 0) ∙∙∙ input
This is the serial receive data pin of UART0.
(vii) TXD0 (Transmit Data 0) ∙∙∙ output
This is the serial transmit data pin of UART0.
(viii) ASCK0 (Asynchronous Serial Clock 0) ∙∙∙ input
This is the serial baud rate clock pin of UART0.
60
CHAPTER 2
PIN FUNCTIONS
2
C0 ( µ PD70303xAY and 70F303wAY only).
2
C0 ( µ PD70303xAY and 70F303wAY only).
User's Manual U13850EJ4V0UM
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