Datasheet

73S8009C Data Sheet DS_8009C_025
2 Rev. 1.5
FEATURES
• Smart card Interface:
• Complies with ISO-7816-3 and EMV 4.1
and derivative standards
• A DC-DC Converter provides 1.8 V/3 V/5 V
to the card from a wide range of external
power supply inputs
• Provides up to 65 mA to the card
• ISO-7816-3 Card emergency deactivation
sequencer
• 2 voltage supervisors detect voltage drops
on the V
CC
(card) and V
DD
(digital) power
supplies
• Card over-current detection 150 mA max.
• 2 card detection inputs, 1 for either user
polarity
• Auxiliary I/O lines for synchronous and
ISO-7816-12 USB card support
• Card CLK clock frequency up to 20 MHz
• 6 kV ESD and short circuit protection on
the card interface
• System Controller Interface:
• 5 Signal images of the card signals
(RSTIN, CLKIN, I/OUC, AUX1UC and
AUX2UC)
• 2 Inputs activate and select the card
voltage (CMDVCC% and CMDVCC#)
• 2 Outputs, interrupt to the system controller
(OFF and RDY), to inform the system
controller of the card presence / faults and
status of the interface
• 1 Chip Select input
• 2 Handshaking signals for proper shutdown
sequencing of all output supply voltages
(OFF_REQ, OFF_ACK)
• ON/OFF Main System Switch:
• Input for an SPST momentary switch to
ground
• DC-DC Converter:
• Step-up converter
• Generates an intermediary voltage V
P
• Requires a single 10 µH Inductor
• System Power Supply requirements:
• When using VBUS: Standard USB +5
input (range +4.4 V to 5.5 V)
• When using V
BAT
: 4.0 V to 6.5 V
• When using V
PC
: 2.7 V to 6.5 V
• Automated detection of voltage presence -
Priority on VBUS over VBAT
• Power Supply Output:
• V
DD
supply output available to power up
external circuitry: 3.3 V ±0.3 V, 40 mA
• Industrial temperature range
• Small format QFN package
• RoHS compliant (6/6) lead-free package