73S8009C IC Datasheet

73S8009C Datasheet, PDF, Equivalent


Part Number

73S8009C

Description

Versatile Power Management and Smart Card Interface IC

Manufacture

Teridian Semiconductor

Total Page 30 Pages
Datasheet
Download 73S8009C Datasheet


73S8009C
www.DataSheet4U.com
73S8009C
Versatile Power Management
and Smart Card Interface IC
Simplifying System Integration™
DS_8009C_025
DESCRIPTION
The Teridian 73S8009C is a versatile power
management and single smart card interface circuit
that is ideally suited for smart card reader products
that are battery and/or USB bus-powered. In
addition to its EMV 4.1 and ISO-7816-3 compliant
smart card-to-host interface circuitry; it provides
control, conversion, and regulation of power for a
companion host processor circuit and power for the
smart card. The 73S8009C can operate from a
single 2.7 V to 6.5 V source supply, or a
combination of battery power (4.0 V to 6.5 V) and
USB power (4.4 V to 5.5 V).
The 73S8009C supports 5 V, 3 V, and 1.8 V smart
cards. The smart card signals for RST, CLK, IO,
and auxiliary signals AUX1 and AUX2 are
level-shifted to the selected VCC value. Although
the host controller is required to handle the
detailed signal timing for activation and de-
activation under normal conditions, the 73S8009C
blocks any spurious signals on CLK, RST and IO
during power-up (as VCC rises) and power-down.
The 73S8009C contains two handshaking signals
for the controller: OFF indicates that a card is
present, and RDY indicates that VCC is at an
acceptable value. The 73S8009C will perform
emergency deactivation upon card removal,
voltage faults, or over-current events
The power management circuitry of the 73S8009C
allows operation from a wide range of voltages
from multiple sources. VPC is converted by using
an inductive, step-up power converter to the
intermediate voltage, VP. VP is used by linear
voltage regulators and switches to create the
voltages VDD and as required, VCC. VDD is used by
the 73S8009C and is also made available for the
companion controller circuit or other external
circuits. The VBAT and VBUS pins provide inputs
from alternate power sources as required. An
internal switch in the 73S8009C acts as a
single-pole, double-throw switch that selects either
VBAT or VBUS to be connected to VPC. When the
voltage on VBUS is zero, VBAT is connected to VPC.
When voltage is applied to VBUS, the switch selects
VBUS as the source for power.
DATA SHEET
February 2010
When power is supplied by VPC or VBAT, the
73S8009C is controlled by the ON_OFF pin in the
manner of a “push-on/push-off” button action. The
OFF_REQ and OFF_ACK signals provide
handshaking and control of the power “off”
function by the controller. A SPST momentary
switch to ground connected to ON_OFF is all that
is required for power control. Alternatively, the
“off” state can be initiated from the host controller
through OFF_ACK. When the 73S8009C is “off,”
the current is less than 1 µA.
When power is supplied via the VBUS pin, the
73S8009C is unconditionally in the “power-on”
state regardless of the action of the ON/OFF
switch or OFF_ACK signal. Power supply current
operating from the VBUS power when VCC is off is
less than 500 µA to conform to USB “SUSPEND”
requirements.
APPLICATIONS
Handheld PINpad smart card readers for
e-commerce, secure login, e-health, Gov’t ID
and loyalty
Point of Sales & Transaction Terminals
General Purpose Smart Card Readers
ADVANTAGES
Ideally suited to USB bus-powered
applications
Ideal for combo bus-powered and/or
self-powered systems
Automatic battery switchover in bus
powered systems
Very low-power mode (sub-µA) with
push-button ON/OFF switch input with
de-bounce
Provides 3.3 V / 40 mA power to external
circuitry (host processor or peripheral circuits)
The inductor-based DC-DC converter provides
higher current and efficiency than usual
charge-pump capacitor-based converters:
Ideal for battery-powered applications
Rev. 1.5
© 2010 Teridian Semiconductor Corporation
1

73S8009C
73S8009C Data Sheet
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 VCC (card) and VDD (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
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DC-DC Converter:
Step-up converter
Generates an intermediary voltage VP
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 VBAT: 4.0 V to 6.5 V
When using VPC: 2.7 V to 6.5 V
Automated detection of voltage presence -
Priority on VBUS over VBAT
Power Supply Output:
VDD 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
2 Rev. 1.5


Features 73S8009C Versatile Power Management and Smart Card Interface IC Simplifying Sys tem Integration™ DS_8009C_025 www.Da taSheet4U.com DATA SHEET February 2010 When power is supplied by VPC or VBAT , the 73S8009C is controlled by the ON_ OFF pin in the manner of a “push-on/p ush-off” button action. The OFF_REQ a nd OFF_ACK signals provide handshaking and control of the power “off” func tion by the controller. A SPST momentar y switch to ground connected to ON_OFF is all that is required for power contr ol. Alternatively, the “off” state can be initiated from the host controll er through OFF_ACK. When the 73S8009C i s “off,” the current is less than 1 µA. When power is supplied via the VB US pin, the 73S8009C is unconditionally in the “power-on” state regardless of the action of the ON/OFF switch or OFF_ACK signal. Power supply current op erating from the VBUS power when VCC is off is less than 500 µA to conform to USB “SUSPEND” requirements. APPLICATIONS • • • Handheld PINpad smart card readers for .
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