Toshiba TLCS-900/H1 Series Manual page 92

3.5.11 Port C (PC0 to PC3, PC6 to PC7)
PC0 to PC3, PC6 and PC7 are 6-bit general-purpose I/O ports. Each bit can be set
individually for input or output. Resetting sets port C to an input port.
In addition to functioning as a general-purpose I/O port, port C can also function as an
output pin for timers (TA1OUT, TA3OUT and TB0OUT0), input pin for external
interruption (INT0 to INT3), output pin for memory (
output pin for LCD driver (LDIV, LCP1). These settings are made using the function
register PCFC. The edge select for external interruption is determined by the IIMC register
in the interruption controller.
(1) PC0 (INT0, TA1OUT)
Reset
Direction control
PCCR write
Function control
PCFC write
S
A
Output latch
B
PC write
TA1OUT
PC read
INT0
IIMC<I0LE, I0EDGE>
Figure 3.5.26 Port C0
92CH21-90
), output pin for key (KO8) and
CSZF
S
Selector
S
B
Selector
A
Level/edge select
and
Rising/falling select
TMP92CH21
PC0 (INT0,
TA1OUT)
2009-06-19