Pin Functions - Renesas H8S Series Hardware Manual

8.10.4

Pin Functions

• PA7/KIN15/PS2CD, PA6/KIN14/PS2CC, PA5/KIN13/PS2BD, PA4/KIN12/PS2BC,
PA3/KIN11/PS2AD, PA2/KIN10/PS2AC
The function of port A pins is switched according to the combination of the KBIOE bit in
KBCRH of KBU and the PAnDDR bit.
When the KMIMRm bit in KMIMRA of the interrupt controller is cleared to 0, this pin can be
used as the KINm input pin.
KBIOE
PAnDDR
Pin function
Notes: n = 7 to 2
m = 15 to 10
When the KBIOE bit or IICS bit in STCR is set to 1, the output format for PA7 to PA4 is
NMOS open-drain output, and direct bus drive is possible.
When the KBIOE bit is set to 1, the output format for PA3 and PA2 is NMOS open-drain
output, and direct bus drive is possible.
• PA1/KIN9, PA0/KIN8
The function of port A pins is switched as shown below according to the PAnDDR bit.
When the KMIMRm bit in KMIMRA of the interrupt controller is cleared to 0, this pin can be
used as the KINm input pin.
PAnDDR
Pin function
Note: n = 1, 0
m = 9, 8
0
0
PAn input pin
0
PAn input pin
1
PAn output pin
KINm input pin
KINm input pin
Rev. 3.00 Jul. 14, 2005 Page 203 of 986
Section 8 I/O Ports
1

KBU input/output pin
1
PAn output pin
REJ09B0098-0300