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