73S8009CN データシートの表示（PDF） - Teridian Semiconductor Corporation

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73S8009CN

Combo ISO-7816 and USB Universal Smart Card Interface IC

Teridian Semiconductor Corporation 

DS_8009CN_026

73S8009CN Data Sheet

VDD_monitor_to_uC

VDD See NOTE 5

0.1F

C1

0.1F

C2

VPC See NOTE 1

See NOTE 4

10µH

0.1F

C3

10µF

C4

ON/OFF_Control_from_uC

USB D- to/from_uC

USB D+ to/from_uC

OFF_interrupt_to_uC

I/OUC_to/from_uC

AUX1UC_to/from_uC

AUX2UC_to/from_uC

CMDVCC%_from_uC

CMDVCC#_from_uC

RSTIN_from_uC

CLKIN_from_uC

RDY_status_to_uC

47K

47K

10K

0

See NOTE 7

1

2

3

4

I/OUC

AUX1UC

AUX2UC

CMDVCC%

5 CMDVCC#

6

7

8

RSTIN

CLKIN

RDY

73S80009CN

SC/USB_from_uC

NOTES:

1) VPC = 2.7V to 6.5V DC

47K

See NOTE 6

2) Resistor footprint is included in case some filtering is needed on CLK

3) Capacitors C5 and C6 are provisional and their footprints should be added for added noise rejection

if necessary.

4) Inductor must be rated for 400 mA maximum peak current.

5) VDD - 3.3V, +/- 0.3V, 40mA max. Schematic assumes VDD is monitored by the host controller.

Requires min two 0.1µF caps to gnd)

6) Resistors are necessary to provide isolation between powered host and "OFF" 73S8009CN. Signals

should be driven low in this condition.

7) The RDY signal is optional. A short delay before releasing RSTIN should suffice for the RDY

signal function.

ON/OFF 24

DM

I/O

AUX1

AUX2

23

22

21

20

VCC

RST

GND

19

18

17

32 QFN

See

NOTE 2

0

4.7µF

C2

VDD

R2

20K

Card detection

switch is

normally closed

27pF

C5

See

NOTE 3

27pF

C6

See

NOTE 3

0.47µF, Low ESR (<100mohms)

should be placed near the

C7

SC connecter contact

CLK track should be routed

far from RST, I/O, C4 and C8

Smart Card Connector

Figure 4: Typical 73S8009CN Application Schematic without a Main System Switch

Rev. 1.4

15

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