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Chapter 2
Pin Functions
Preliminary User’s Manual U15839EE1V0UM00
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 a port, in control mode, P10 to P17 operate as the serial interface (UART1,
FCAN1, FCAN2, FCAN3
NOTE
) 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
This pin output serial transmit data of UART1.
(f) RXD1 (Receive data) … Input
This pin input serial receive data of UART1.
Note: CAN module 3 is available in the derivatives µPD703129 (A) and µPD703129 (A1) only.
Summary of Contents for mPD703128
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