Datasheet

Pin configuration ST8024
6/31
2 Pin configuration
Figure 2. Pin connections
Table 2. Pin description
Pin n° Symbol Name and function
1 CLKDIV1 Control of CLK frequency
2 CLKDIV2 Control of CLK frequency
35V/3V
V
CC
selection pin
4 PGND Power ground for step-up converter
5 C1+ External cap. for step-up converter
6V
DDP
Power supply for step-up converter
7 C1- External cap. step-up converter
8V
UP
Output of step-up converter
9PRES
Card presence input (active low)
10 PRES Card presence input (active high)
11 I/O Data line to and from card (C7) (internal 11 kΩ pull-up resistor connected to V
CC
)
12 AUX2 Auxiliary line to and from card (C8) (internal 11 kΩ pull-up resistor connected to V
CC
)
13 AUX1 Auxiliary line to and from card (C4) (internal 11 kΩ pull-up resistor connected to V
CC
)
14 CGND Ground for card signal (C5)
15 CLK Clock to card (C3)
16 RST Card reset (C2)
17 V
CC
Supply voltage for the card (C1)
18 V
THSEL
Deactivation threshold selector pin (under voltage lock-out)