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2.2 Description of Pin Functions
(1)
P10 to P17 (Port 1) ... Input/output
Port 1 is an 8-bit input/output port in which input or output can be set in 1-bit units.
Besides functioning as an input/output port, in control mode, P10 to P17 operate as serial interface
(UART1, FCAN) input/output.
An operation mode of port or control mode can be selected for each bit and specified by the port 1
mode control register (PMC1).
(a) Port mode
P10 to P17 can be set to input or output in 1-bit units using the port 1 mode register (PM1).
(b) Control mode
P10 to P17 can be set to port or control mode in 1-bit units using PMC1.
(c) CTXD1, CTXD2, CTXD3 (Transmit data for controller area network) ... Output
This pin outputs FCAN serial transmit data.
(d) CRXD1, CRXD2, CRXD3 (Receive data for controller area network) ... Input
This pin inputs FCAN serial receive data.
(e) TXD1 (Transmit data) ... Output
These pins output serial transmit data of UART1.
(f) RXD1 (Receive data) ... Input
These pins input serial receive data of UART1.
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Chapter 2 Pin Functions
Preliminary User's Manual U14913EE1V0UM00
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