Port C Register (Portc); Pin Functions - Renesas H8S/2437 Hardware Manual

7.13.3

Port C Register (PORTC)

PORTC reflects the pin state in port C and cannot be modified.
Bit Bit Name
7 PC7
6 PC6
5 PC5
4 PC4
3 PC3
2 PC2
1 PC1
0 PC0
Note: * Determined by the states of the PC7 to PC0 pins.
7.13.4

Pin Functions

The relationship between register setting values and pin functions is as follows.
• PC7/ETDO
Pin function PC7 input pin
Note: When the on-chip emulator is used, this pin functions as the ETDO output pin. When the
on-chip emulator is not used (normal operation), a high or low level signal should be input to
this pin.
• PC6/ETDI
Pin function PC6 input pin
Note: When the on-chip emulator is used, this pin functions as the ETDI input pin. When no signal
is input, this pin is fixed to 1 by the internal pull-up.
• PC5/ETCK
Pin function PC5 input pin
Note: When the on-chip emulator is used, this pin functions as the ETCK input pin. When no
signal is input, this pin is fixed to 1 by the internal pull-up.
Initial Value R/W
*
R
*
R
*
R
*
R
*
R
*
R
*
R
*
R
Description
These bits are always read as pin states.
When this register is read, the bit that is set in
PCDDR is read as the value of PCDR. The bit
that is cleared in PCDDR is read as the pin
state.
Rev. 1.00, 09/03, page 211 of 704