Datasheet

ST6200C/ST6201C/ST6203C
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I/O PORTS (Cont’d)
Figure 23. I/O Port Block Diagram
Table 8. I/O Port Configurations
Note: x = Don’t care
DDR OR DR Mode Option
0 0 0 Input With pull-up, no interrupt
0 0 1 Input No pull-up, no interrupt
0 1 0 Input With pull-up and with interrupt
0 1 1 Input Analog input (when available)
1 0 x Output Open-drain output (20mA sink when available)
1 1 x Output Push-pull output (20mA sink when available)
V
DD
RESET
ST6
INTERNAL
DATA
DATA
DIRECTION
REGISTER
REGISTER
OPTION
REGISTER
TO INTERRUPT
V
DD
TO ADC
V
DD
N-BUFFER
P-BUFFER
PULL-UP
CMOS
SCHMITT
TRIGGER
Pxx I/O Pin
BUS
CLAMPING
DIODES
*
* Depending on device. See device summary on page 1.
1