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TMP92CM22
2007-02-16
92CM22-67
(2) PC1 (INT1, TA1OUT), PC5 (INT2, TA3OUT), PC6 (INT3, TB0OUT0)
In addition to function as I/O port, port PC1, PC5, and PC6 can also function as
external interrupt input pin INT1 to INT3 and output pin of timer channel TA1OUT,
TA3OUT, and TB0OUT0.
Note: Can not read the output latch data when output mode.
Figure 3.5.19 Port C (PC1, PC5, and PC6)
Internal data bus
Direction control
(on bit basis)
Reset
PCCR write
PC read
PC1 (INT1, TA1OUT)
PC5 (INT2, TA3OUT)
PC6 (INT3, TB0OUT0)
PC write
S
Output latch
S
B
Selector
A
Function control
(on bit basis)
PCFC write
INT1
INT2
INT3
S
A
Selector
B
Select rising/falling
IIMC2<I1LE, I2LE, I3LE>
TA1OUT
TA3OUT
TB0OUT0
A
Selector
S B
IIMC <I1EDGE, I2EDGE, I3EDGE>
High level/low level selection