DS_8010C_024
73S8010C Data Sheet
1 Pin Description
1.1
Card Interface
Pin
(SO)
11
13
12
16
15
PIN
(QFN)
9
11
10
14
13
Description
Card I/O: Data signal to/from card. Includes a pull-up resistor to V
CC.
AUX1: Auxiliary data signal to/from card. Includes a pull-up resistor to V
CC.
AUX2: Auxiliary data signal to/from card. Includes a pull-up resistor to V
CC.
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.
Name
I/O
AUX1
AUX2
RST
CLK
PRES
VCC
GND
10
17
14
7
15
12
1.2
Miscellaneous Inputs and Outputs
PIN
(SO)
24
25
18
PIN
(QFN)
23
24
17
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
DD
threshold adjustment input: this pin can be used to overwrite a
higher V
DDF
value (that controls deactivation of the card). Must be
left open if unused.
Non-connected pin.
Name
XTALIN
XTALOUT
VDDF_ADJ
NC
7, 9
4, 6, 8,
16, 25,
32
1.3
Power Supply and Ground
PIN
(SO)
6, 21
4
14
22
5
Pin
(QFN)
3, 20
1
12
21
2
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
DD
. Keep the
inductor close to pin 5.
Name
VDD
GND
GND
GND
LIN
Rev. 1.5
5
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
