ST6200C/ST6201C/ST6203C
I/O PORTS (Cont’d)
Table 9. I/O Port Option Selections
MODE
AVAILABLE ON(1)
Input
DDRx ORx
0
0
DRx
1
PA1-PA3
PB0, PB1, PB3,
PB5-PB7
Reset state
Input
with pull up
DDRx ORx
0
0
DRx
0
PA1-PA3
PB0, PB1, PB3,
PB5-PB7
Input
with pull up
with interrupt
DDRx ORx
0
1
DRx
0
PA1-PA3
PB0, PB1, PB3,
PB5-PB7
Analog Input
DDRx ORx
0
1
DRx
1
PB3, PB5-PB7
(Except on
ST6203C)
Open drain output (5mA) PB0, PB1, PB3,
PB5-PB7
VDD
SCHEMATIC
VDD
VDD
VDD
VDD
VDD
VDD
ADC
Data in
Interrupt
Data in
Interrupt
Data in
Interrupt
VDD
P-buffer disconnected
Open drain output (20 mA) PA1-PA3
DDRx ORx
1
0
DRx
0/1
Push-pull output (5mA) PB0, PB1, PB3,
PB5-PB7
VDD
Push-pull output (20 mA) PA1-PA3
DDRx ORx DRx
1
1
0/1
Note 1. Provided the correct configuration has been selected (see Table 8).
Data out
Data out
39/100
1