73S8010C Data Sheet DS_8010C_024
4 Rev. 1.5
Figures
Figure 1: 73S8010C Block Diagram ............................................................................................................. 2
Figure 2: I
2
C Bus Write Protocol ................................................................................................................... 8
Figure 3: I
2
C Bus Read Protocol ................................................................................................................... 9
Figure 4: I
2
C Bus Timing Diagram ................................................................................................................ 9
Figure 5: Power Down Mode Operation ...................................................................................................... 12
Figure 6: Activation Sequence .................................................................................................................... 12
Figure 7: Deactivation Sequence ................................................................................................................ 13
Figure 8: FAULT Functions, INT operation ................................................................................................. 13
Figure 9: Warm Reset operation ................................................................................................................. 14
Figure 10: I/O Timing .................................................................................................................................. 14
Figure 11: 73S8010C – Typical Application Schematic .............................................................................. 15
Figure 12: DC – DC Converter Efficiency (V
CC
= 5 V) ................................................................................ 18
Figure 13: DC – DC Converter Efficiency (V
CC
= 3 V) ................................................................................ 18
Figure 14: 32-pin QFN Package Drawing ................................................................................................... 22
Figure 15: 28-pin SO Package Drawing ..................................................................................................... 23
Tables
Table 1: Device Address Selections ............................................................................................................. 7
Table 2: Host Control Register ...................................................................................................................... 7
Table 3: Host Status Register ....................................................................................................................... 8
Table 4: Choice of Vcc Capacitor ............................................................................................................... 10
DS_8010C_024 73S8010C Data Sheet
Rev. 1.5 5
1 Pin Description
1.1 Card Interface
Name
Pin
(SO)
PIN
(QFN)
Description
I/O 11 9 Card I/O: Data signal to/from card. Includes a pull-up resistor to V
CC.
AUX1 13 11 AUX1: Auxiliary data signal to/from card. Includes a pull-up resistor to V
CC.
AUX2 12 10 AUX2: Auxiliary data signal to/from card. Includes a pull-up resistor to V
CC.
RST 16 14 Card reset: provides reset (RST) signal to card.
CLK 15 13
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.
PRES 10 7
Card Presence switch: active high indicates card is present. Includes a
pull-down resistor.
VCC 17 15
Card power supply: logically controlled by sequencer, output of DC-DC
converter. Requires an external filter capacitor to the card GND.
GND 14 12 Card ground.
1.2 Miscellaneous Inputs and Outputs
Name
PIN
(SO)
PIN
(QFN)
Description
XTALIN 24 23
Crystal oscillator input: can either be connected to a crystal or driven
as a source for the card clock.
XTALOUT 25 24
Crystal oscillator output: connected to crystal. Left open if XTALIN is
being used as an external clock input.
VDDF_ADJ 18 17
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.
NC 7, 9
4, 6, 8,
16, 25,
32
Non-connected pin.
1.3 Power Supply and Ground
Name
PIN
(SO)
Pin
(QFN)
Description
VDD 6, 21 3, 20
System controller interface supply voltage: supply voltage for internal
circuitry and DC-DC converter power supply source.
GND 4 1 DC-DC converter ground.
GND 14 12 Smart Card I/O ground.
GND 22 21 Digital ground.
LIN 5 2
External inductor: Connect external inductor from pin 5 to V
DD
. Keep the
inductor close to pin 5.
73S8010C Data Sheet DS_8010C_024
6 Rev. 1.5
1.4 Microcontroller Interface
Name
PIN
(SO)
PIN
(QFN)
Description
INT 23 22
Interrupt output (negative assertion): Interrupt output signal to the
processor. A 20 k pull up to V
DD
is provided internally.
PWRDN 8 5
Power Down control input: Active High. When Power Down (PD) mode is
activated, all internal analog functions are disabled to place the 73S8010C
in its lowest power consumption mode. Must be tied to ground when the
power down function is not used.
SAD0
SAD1
SAD2
1
2
3
29
30
31
Serial device address bits: Digital inputs for address selection that allow
the connection of up to 8 devices in parallel. Address selections as follows:
SAD2 SAD1 SAD0 I
2
C Address (7 bits)
0 0 0 0x40
0 0 1 0x42
0 1 0 0x44
0 1 1 0x46
1 0 0 0x48
1 0 1 0x4A
1 1 0 0x4C
1 1 1 0x4E
Pins SAD0 and SAD1 are internally pulled-down and SAD2 is
internally pulled-up.
The default address when left unconnected is 48h.
SCL 19 18 I
2
C clock signal input.
SDA 20 19 I
2
C bi-directional serial data signal.
I/OUC 26 26
System controller data I/O to/from the card. Includes internal pull-up
resistor to V
DD.
AUX1UC 27 27
System controller auxiliary data I/O to/from the card. Includes internal pull-
up resistor to V
DD.
AUX2UC 28 28
System controller auxiliary data I/O to/from the card. Includes internal pull-
up resistor to V
DD.

73S8010C-IL/F

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Interface - Specialized Smart Card Interface ISO7816-3 & EVM4.0
Lifecycle:
New from this manufacturer.
Delivery:
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