73S8024RN Maxim, 73S8024RN Datasheet - Page 5

• Manufacturer Part Number: 73S8024RN
• Description: The 73S8024RN is a single smart card interface IC, compliant to the electrical requirements of ISO 7816-3, EMV 4
• Manufacturer: Maxim

DS_8024RN_020
1 Pin Description
CARD INTERFACE
MISCELLANEOUS INPUTS AND OUTPUTS
POWER SUPPLY AND GROUND
Rev. 1.9
Name
I/O
AUX1
AUX2
RST
CLK
PRES
PRES
VCC
GND
Name
XTALIN
XTALOUT
VDDF_ADJ
NC
Name
VDD
GND
GND
VPC
28SO
28SO
28SO
Pin
Pin
Pin
11
13
12
16
15
10
17
14
24
25
18
21
22
9
5
6
4
20QFN
20QFN
20QFN
Pin
Pin
Pin
15
16
12
13
5
–
–
8
7
4
3
9
6
–
–
2
1
32QFN
32QFN
32QFN
16, 25,
2, 9,
Pin
Pin
Pin
11
10
14
13
15
12
23
24
17
32
20
21
8
7
6
3
1
Description
Card I/O: Data signal to/from card. Includes a pull-up
resistor to V
AUX1: Auxiliary data signal to/from card. Includes a
pull-up resistor to V
AUX2: Auxiliary data signal to/from card. Includes a
pull-up resistor to V
Card reset: provides reset (RST) signal to card.
Card clock: provides clock signal (CLK) to card. The rate
of this clock is determined by the external crystal
frequency or frequency of the external clock signal applied
on XTALIN and CLKDIV selections.
Card Presence switch: active high indicates card is
present. Should be tied to GND when not used, but it
Includes a high-impedance pull-down current source.
Card Presence switch: active low indicates card is
present. Should be tied to V
Includes a high-impedance pull-up current source.
Card power supply – logically controlled by sequencer,
output of LDO regulator. Requires an external filter
capacitor to the card GND.
Card ground.
Digital ground.
Description
Crystal oscillator input: can either be connected to crystal
or driven as a source for the card clock.
Crystal oscillator output: connected to crystal. Left open
if XTALIN is being used as external clock input.
V
to adjust the V
card). Must be left open if unused.
Non-connected pin.
Description
System interface supply voltage and supply voltage for
internal circuitry.
LDO regulator power supply source.
LDO Regulator ground.
DD
fault threshold adjustment input: this pin can be used
CC.
DDF
values (that controls deactivation of the
CC.
CC.
DD
when not used, but it
73S8024RN Data Sheet
5