Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 401 of 1268
REJ09B0220-0600
Table 9.14 Port A Pin Functions
Pin Selection Method and Pin Functions
PA
7
/A
23
/IRQ
7
The pin function is switched as shown below according to the combination of
the operating mode and bits A23E and PA7DDR.
Operating
mode
Modes 4 to 6 Mode 7
A23E 0 1 —
PA7DDR 0 1 0 1 0 1
Pin function PA
7
input pin
PA
7
output pin
PA
7
input pin
A
23
output pin
PA
7
input pin
PA
7
output
pin
*
2
IRQ
7
interrupt input pin
*
1
Notes: 1. IRQ
7
input when IRQPAS = 0.
2. NMOS open-drain output when PA7ODR = 1.
PA
6
/A
22
/IRQ
6
The pin function is switched as shown below according to the combination of
the operating mode and bits A22E and PA6DDR.
Operating
mode
Modes 4 to 6 Mode 7
A22E 0 1 —
PA6DDR 0 1 0 1 0 1
Pin function PA
6
input pin
PA
6
output pin
PA
6
input pin
A
22
output pin
PA
6
input pin
PA
6
output
pin
*
2
IRQ
6
interrupt input pin
*
1
Notes: 1. IRQ
6
input when IRQPAS = 0.
2. NMOS open-drain output when PA6ODR = 1.
PA
5
/A
21
/IRQ
5
The pin function is switched as shown below according to the combination of
the operating mode and bits A21E and PA5DDR.
Operating
mode
Modes 4 to 6 Mode 7
A21E 0 1 —
PA5DDR 0 1 0 1 0 1
Pin function PA
5
input pin
PA
5
output pin
PA
5
input pin
A
21
output pin
PA
5
input pin
PA
5
output
pin
*
2
IRQ
5
interrupt input pin
*
1
Notes: 1. IRQ
5
input when IRQPAS = 0.
2. NMOS open-drain output when PA5ODR = 1.