73S8010C Maxim, 73S8010C Datasheet - Page 5

• Manufacturer Part Number: 73S8010C
• Description: The 73S8010C is a single smart card interface IC, compliant to the electrical requirements of ISO 7816-3 and EMV 4
• Manufacturer: Maxim

1 Pin Description
1.1 Card Interface
1.2 Miscellaneous Inputs and Outputs
1.3 Power Supply and Ground
Rev. 1.5
Name
XTALIN
XTALOUT
VDDF_ADJ
NC
Name
VDD
GND
GND
GND
LIN
Name
I/O
AUX1
AUX2
RST
CLK
PRES
VCC
GND
(SO)
Pin
11
13
12
16
15
10
17
14
6, 21
(SO)
PIN
14
22
4
5
(SO)
PIN
7, 9
24
25
18
(QFN)
(QFN)
PIN
3, 20
11
10
14
13
15
12
Pin
9
7
12
21
1
2
4, 6, 8,
16, 25,
(QFN)
PIN
23
24
32
17
Description
System controller interface supply voltage: supply voltage for internal
circuitry and DC-DC converter power supply source.
DC-DC converter ground.
Smart Card I/O ground.
Digital ground.
External inductor: Connect external inductor from pin 5 to V
inductor close to pin 5.
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 (CLK) signal to card. The rate of this clock is
determined by the crystal oscillator frequency and CLKSEL bits in the
control register.
Card Presence switch: active high indicates card is present. Includes a
pull-down resistor.
Card power supply: logically controlled by sequencer, output of DC-DC
converter. Requires an external filter capacitor to the card GND.
Card ground.
Description
Crystal oscillator input: can either be connected to a crystal or driven
as a source for the card clock.
Crystal oscillator output: connected to crystal. Left open if XTALIN is
being used as an external clock input.
V
higher V
left open if unused.
Non-connected pin.
DD
threshold adjustment input: this pin can be used to overwrite a
DDF
value (that controls deactivation of the card). Must be
DD
. Keep the
CC.
CC.
CC.
5