st8024l STMicroelectronics, st8024l Datasheet - Page 7

• Manufacturer Part Number: st8024l
• Description: Smartcard Interface
• Manufacturer: STMicroelectronics

ST8024L
Table 2.
1. Only available on the SO-8 package.
CMDVCC Start activation sequence input (active low)
PORADJ Power-on reset threshold adjustment input
AUX1UC Non-inverting receiver input (internal 11 kΩ pull-up resistor connected to V
AUX2UC Non-inverting receiver input (internal 11 kΩ pull-up resistor connected to V
Symbol
RSTIN
CGND
XTAL1
XTAL2
I/OUC
AUX2
AUX1
GND
1.8V
CLK
RST
OFF
V
V
I/O
CC
DD
Data line to and from card (C7)
(internal 11 kΩ pull-up resistor connected to V
Auxiliary line to and from card (C8)
(internal 11 kΩ pull-up resistor connected to V
Auxiliary line to and from card (C4) (internal 11 kΩ pull-up resistor to V
Ground for card signal (C5)
Clock to card (C3)
Card reset (C2)
Supply voltage for the card (C1)
1.8 V V
overrides any setting on the 5V/3V pin.
Card reset input from MCU
Supply voltage
Ground
Interrupt to MCU (active low)
Crystal or external clock input
Crystal connection (leave this pin open if external clock is used)
MCU data I/O line (internal 11 kΩ pull-up resistor connected to V
Pin description (continued)
CC
operation selection. Logic high selects 1.8 V operation and
Name and function
Doc ID 17709 Rev 3
CC
CC
)
)
DD
)
CC
)
DD
DD
)
)
TSSOP-28
18/N.A.
SO-28/
Pin configuration
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
(1)
TSSOP-20
N.A.
N.A.
N.A.
N.A.
N.A
N.A
10
11
12
13
14
15
16
17
18
19
20
8
9
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