tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 117

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

8.1
I/O Port Control Registers
RA006
8.1
can be set vary depending on the port. For details, refer to the description of each port.
I/O Port Control Registers
The following control registers are used for I/O ports. (The port number is indicated in place of x.) Registers that
・ PxDR register
・ PxPRD register
・ PxCR register
・ PxFC register
・ PxOUTCR register
・ PxPU register
PxDR is output from the port.
status can be read by reading PxPRD.
and the "output mode".
port can be enabled or disabled.
input mode or as the open drain output.
This is the register for setting output data. When a port is set to the "output mode", the value specified at
This is the register for reading input data. When a port is set to the "input mode", the current port input
This register switches a port between input and output. A port can be switched between the "input mode"
This register enables the secondary function output of each port. The secondary function output of each
This register switches the port output between the C-MOS output and the open drain output.
This register determines whether or not the built-in pull-up resistor is connected when a port is used in the
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