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| DS8024_V3 Datasheet, PDF (13/15 Pages) Maxim Integrated Products – Smart Card Interface | |||
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Smart Card Interface
GPIO
...
...
...
...
GPIO
ISOIO0
+3.3V
33pF
33pF 100nF
100nF
VDD
100nF
XTAL1
CLKDIV1
CLKDIV2
5V/3V
XTAL2 GND
OFF
RSTIN
CMDVCC
AUX2IN
AUX1IN
I/OIN
VDD CP1
100nF
+10μF
CP2 VUP
PGND VDDA
PRES
VCC
RST
DS8024
CLK
I/O
AUX1
AUX2
CGND
+3.3V
100kΩ**
100nF* 220nF*
MAXQ1103
GPIO
...
...
...
GPIO
ISOIO1
CLKDIV1
CLKDIV2
5V/3V
OFF
RSTIN
CMDVCC
AUX2IN
AUX1IN
I/OIN
XTAL1 XTAL2 GND
VCC
RST
CLK
DS8024
I/O
AUX1
AUX2
VDD CP1
CGND
PRES
CP2 VUP
PGND VDDA
+10μF
100nF
33pF
33pF 100nF
100nF
+3.3V
100nF
VDD
100nF* 220nF*
100kΩ**
+3.3V
*PLACE A 100nF CAPACITOR CLOSE TO DS8024 AND PLACE A 220nF CAPACITOR CLOSE TO CARD CONTACT.
**SCHEMATIC ASSUMES A NORMALLY CLOSED CONNECTION TO GROUND IN THE SOCKET. INSERTING A CARD BREAKS THE CONNECTION AND PULLS PRES HIGH.
Figure 8. Typical Application Diagram
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