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(2) P10 to P15 (Port 1) ··· 3-state I/O
P10 to P15 constitute a 6-bit I/O port that can be set to input or output in 1-bit units.
P10 to P15 can also function as input or output pins for the serial interface.
P10 to P12, P14, and P15 can be selected as normal output or N-ch open-drain output.
(a) Port function
P10 to P15 can be set to input or output in 1-bit units using the port 1 mode register (PM1).
(b) Alternate functions
(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 of 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 input pin of UART0.
(vii) TXD0 (Transmit data 0) ··· output
This is the serial transmit data output pin of UART0.
(viii) ASCK0 (Asynchronous serial clock 0) ··· input
This is the serial baud rate clock input pin of UART0.
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CHAPTER 2
PIN FUNCTIONS
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User's Manual U13850EJ6V0UD
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