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INPUT/OUTPUT PINS
3.2 I/O pins of internal peripheral devices
3.2 I/O pins of internal peripheral devices (P4
P4
and P5 to P8 also function as the I/O pins of the internal peripheral devices. Table 3.2.1 lists I/O pins
2
for the internal peripheral devices.
For their functions, refer to relevant sections of each internal peripheral device. For the clock φ
refer to "Chapter 12. CONNECTION WITH EXTERNAL DEVICES."
Table 3.2.1 I/O pins for internal peripheral devices
I/O pins for internal peripheral devices
Port
Clock φ
P4
2
I/O pins of Timer A
P5
P6
, P6
0
1
P6
to P6
Input pins of external interrupts
2
4
Input pins of Timer B
P6
to P6
5
7
Input pins of A-D converter
P7
I/O pins of Serial I/O
P8
3–8
output pin
1
7751 Group User's Manual
, P5–P8)
2
output pin,
1
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