73S8023C-IMR/F Maxim Integrated Products, 73S8023C-IMR/F Datasheet - Page 17

• Manufacturer Part Number: 73S8023C-IMR/F
• Description: IC SMART CARD INTERFACE 32-QFN
• Manufacturer: Maxim Integrated Products

Specifications of 73S8023C-IMR/F

• Controller Type: Smart Card Interface
• Interface: *
• Voltage - Supply: 2.7 V ~ 3.6 V
• Current - Supply: 4.9mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

73S8023C Data Sheet
11 Typical Application Schematic
Rev. 1.5
See NOTE 1
5V/3V_select_from_uC
NOTES:
1) VDD supply must be = 2.7V to 3.6V DC).
2) Keep L1 close to pin 2.
3) Required if external clock from uP is used.
4) Required if crystal is used.
5) Pin can not float. Must be driven or connected to GND if
6) Internal pull-up allows it to be left open if unused.
7) Rext1 and Rext2 are external resistors to ground and
8) Capacitors C7 and C8 are optional. C6 is mandatory for NDS.
CLKDIV1_from_uC
CLKDIV2_from_uC
Y1, C2 and C3 must be removed if external clock is used.
power down function is not used.
VDD to modify the VDD fault voltage. Can be left open.
PWRDN_from_uC
CLKSEL_from_uC
CLKOUT_to_uC
VDD
CS_from_uC
10uF
C4
See NOTE 5
100nF
C5
See note 2
L1
10uH
Figure 11: 73S8023C – Typical Application Schematic
VDD
VDD
20K
R2
Card detection
switch is
normally
closed.
1
2
3
4
5
6
7
8
GND
LIN
VDD
PWRDN
PRES
PRES
CS
NC
Smart Card Connector
27pF
C6
73S8023C
VDDF_ADJ
XTALOUT
CMDVCC
XTALIN
RSTIN
32QFN
GND
OFF
VDD
27pF
C7
CLK track should be routed
far from RST, I/O, C4 and
C8.
24
23
22
21
20
19
18
17
27pF
C8
C1
See note 7
SO7816=1uF,
NDS/EMV=3.3uF
should be placed near the SC
Low ESR (<100mohms) C1
connecter contact
VDD
Rext1
Rext2
R3
R1
AUX2UC_to/from_uC
AUX1UC_to.from_uC
I/OUC_to/from_uC
STROBE_from_uC
100nF
C9
See NOTE 1
OFF_interrupt_to_uC
RSTIN_from_uC
CMDVCC_from_uC
VDD
- OR -
See NOTE 6
External_clock_from uC
Y1
CRYSTAL
See NOTE 4
DS_8023C_019
See NOTE 3
C2
C3
22pF
22pF
17