ml670100 Oki Semiconductor, ml670100 Datasheet - Page 75

• Manufacturer Part Number: ml670100
• Description: Ml670100 Is A High-performance 32-bit Microcontroller
• Manufacturer: Oki Semiconductor

5.2
5.2.1
5.2.2
Port Output Register n (POn, n=0 - 8) is an 8-bit read/write register that holds the output data
for I/O port PIOn. If the corresponding PIOn pin is configured for I/O port output (not
secondary), the POn bit controls the pin output level. Setting that POn bit to "1" then produces
"H" level output; resetting it to "0," "L" level output.
After a system reset, this register contains an indeterminate value.
Port Input Register n (PIn, n=0 - 8) is an 8-bit read-only register that holds the input data from
I/O port PIOn. If the corresponding PIOn pin is configured for input (primary or secondary
function), the PIn bit gives the pin input level. If the pin is configured for output (primary or
secondary function), the PIn bit gives the pin output level. A "0" indicates "L" level; a "1," "H"
level.
After a system reset, this register contains an indeterminate value.
Control Registers
Port Output Registers 0 to 8 (POn, n=0 - 8)
Port Input Registers 0 to 8 (PIn, n=0 - 8)
Note :
For further details, see Section 5.3.2 "Reading from I/O Ports."
Figure 5.1 : Port Output Registers 0 to 8 (POn, n=0 - 8)
Figure 5.2 : Port Input Registers 0 to 8 (POn, n=0 - 8)
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7
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5
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4
4
3
3
2
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1
1
0
0
5-5