Datasheet

ST8024 Pin configuration
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19 CMDVCC
Start activation sequence input (active low)
20 RSTIN Card reset input from MCU
21 V
DD
Supply voltage
22 GND Ground
23 OFF
Interrupt to MCU (active low)
24 XTAL1 Crystal or external clock input
25 XTAL2 Crystal connection (leave this pin open if external clock is used)
26 I/OUC MCU data I/O line (internal 11 kΩ pull-up resistor connected to V
DD
)
27 AUX1UC Non-inverting receiver input (internal 11 kΩ pull-up resistor connected to V
DD
)
28 AUX2UC Non-inverting receiver input (internal 11 kΩ pull-up resistor connected to V
DD
)
Table 2. Pin description (continued)
Pin n° Symbol Name and function