HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 233

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

8.11.3
PAPIN indicates the port A state.
Bit
Note:* The initial value is determined according to the PA7 to PA0 pin states.
8.11.4
Note:* When the KBIOE bit is set to 1 or the IICS bit in STCR is set to 1, this pin is an NMOS
Operating
Mode
KBIOE
PA7DDR
IOSE
Pin Function
7
6
5
4
3
2
1
0
PA7/A23/.,148/CIN15/PS2CD
The pin function is switched as shown below according to the combination of operating mode,
the KBIOE bit in KBCRH_2 of the keyboard buffer controller, the IOSE bit in SYSCR, and
the PA7DDR bit.
open-drain output, and has direct bus drive capability. This pin can always be used as the
PS2CD, .,148, or CIN15 input pin.
Bit Name
PA7PIN
PA6PIN
PA5PIN
PA4PIN
PA3PIN
PA2PIN
PA1PIN
PA0PIN
Port A Input Data Register (PAPIN)
Pin Functions
input pin
PA7
Modes 1, 2 (EXPE = 0), 3
—
0
Initial Value
Undefined*
Undefined*
Undefined*
Undefined*
Undefined*
Undefined*
Undefined*
Undefined*
0
output pin
PA7
—
.,148 input pin, CIN15 input pin, PS2CD input pin*
1
R/W
output pin
PS2CD
R
R
R
R
R
R
R
R
—
—
1
Reading PAPIN always returns the pin states.
PAPIN has the same address as PADDR. If a write
is performed, the port A settings will change.
Description
input pin
PA7
—
0
A23 output
Mode 2 (EXPE = 1)
Rev. 2.0, 08/02, page 193 of 788
pin
0
0
1
PA7 output
pin
1
output pin
PS2CD
—
—
1