ST6208C/ST6209C/ST6210C/ST6220C
I/O PORTS (Cont’d)
Table 10. I/O Port Option Selections
MODE
AVAILABLE ON(1)
SCHEMATIC
V
V
DD
V
DD
Input
PA0-PA3
PB0-PB7
Data in
DDRx
0
ORx
0
DRx
1
Interrupt
Reset state
Input
DD
V
DD
PA0-PA3
PB0-PB7
with pull up
Data in
DDRx
0
ORx
0
DRx
0
Interrupt
V
Input
DD
V
DD
with pull up
with interrupt
PA0-PA3
PB0-PB7
Data in
DDRx
0
ORx
1
DRx
0
Interrupt
PB0-PB3
(ST6210C/20C
only)
V
DD
Analog Input
PB4-PB7
ADC
(All devices,
except ST6208C)
DDRx
0
ORx
1
DRx
1
Open drain output (5mA) PB0-PB7
V
DD
P-buffer disconnected
Data out
Open drain output (20 mA) PA0-PA3
DDRx
1
ORx
0
DRx
0/1
Push-pull output (5mA) PB0-PB7
V
DD
Data out
Push-pull output (20 mA) PA0-PA3
DDRx
1
ORx
1
DRx
0/1
Note 1. Provided the correct configuration has been selected (see Table 9).
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