73S8010R-IL/F Maxim Integrated Products, 73S8010R-IL/F Datasheet - Page 18

• Manufacturer Part Number: 73S8010R-IL/F
• Description: IC SMART CARD INTERFACE 28-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of 73S8010R-IL/F

• Controller Type: Smart Card Interface
• Interface: I²C
• Voltage - Supply: 2.7 V ~ 5.5 V
• Current - Supply: 1.5mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

73S8010R Data Sheet
3.4
The card power supply is provided by the LDO regulator, and controlled by the digital ISO-7816-3
sequencer. Card voltage selection is carried out by bit 2 of the control register.
Choice of the V
Depending on the application, the requirements in terms of both the V
transient currents that the interface must be able to provide to the card are different. An external
capacitor must be connected between the VCC pin and the card ground in order to guarantee stability of
the LDO regulator, and to handle the transient requirements. The type and value of this capacitor can be
optimized to meet the desired specification. Table 14 shows the recommended capacitors for each V
power supply configuration and applicable specification.
3.5
A built-in detector monitors die temperature. When an over-temperature condition occurs (resulting from
a heavily loaded card interface, including short circuits, for example), a card deactivation sequence is
initiated, and a fault condition is reported to the system controller (bit 4 of the status register is set and an
interrupt is generated).
3.6
The Teridian 73S8010R device has an on-chip oscillator that can generate the smart card clock using an
external crystal connected between the XTALIN and XTALOUT pins to set the oscillator frequency.
When the card clock signal is available from another source, it can be connected to the pin XTALIN, and
in this case, the XTALOUT pin should be left unconnected.
The card clock frequency may be chosen from 4 different division rates, defined by the Clksel2 and
Clksel1 bits (bits 5 and 6) of the I
18
Specification
ISO-7816-3
EMV 4.0
Card Power Supply
Over-temperature Monitor
On-chip Oscillator and Card Clock
Specification Requirements
CC
transient current
Min V
capacitor:
allowed during
4.6 V
4.5 V
CC
Voltage
Clksel2
Table 14: Choice of VCC Pin Capacitor
2
Table 15: Card Clock Divisor Options
C Control register, as listed in Table 15.
0
0
1
1
Current Charge
Max Transient
30 nAs
20 nAs
Clksel1
0
1
0
1
Supply required
Min V
Clkin (Xtalin)
Card Clock
Clkin / 8
Clkin / 4
Clkin / 2
4.75 V
4.75 V
PC
Power
System Requirements
CC
minimum voltage and the
ESR<100 mΩ
Capacitor
X5R/X7R
Type
with
DS_8010R_022
Capacitor
3.3 ΩF
Value
1 ΩF
Rev. 1.6
PC