73S8023C-IM 查看數據表（PDF） - Teridian Semiconductor Corporation

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73S8023C-IM

Smart Card Interface

Teridian Semiconductor Corporation 

Simplifying System Integration™

73S8023C

Smart Card Interface

DATA SHEET

April 2009

DESCRIPTION

The Teridian 73S8023C is a low-power, high efficiency,

single smart card interface IC suitable for 3V and 5V

cards. It provides full electrical compliance with ISO-

7816-3 and EMV 4.0 (EMV2000) specifications.

Hardware support for any type of synchronous cards

(memory cards) is provided.

Interfacing with the system controller is done through the

control bus; composed of digital inputs to control the

interface, and one interrupt output to inform the system

controller of the card presence and faults. Data exchange

with the card is managed from the system controller using

the I/O line (and eventually the auxiliary I/O lines).

A chip select input allows multiple 73S8023C ICs to share

the same control bus. When chip select is set low, the

host microcontroller inputs are latched and outputs are

taken to a high impedance state.

The card clock signal can be generated by an on-chip

oscillator using an external crystal or by connecting an

external clock signal.

The 73S8023C device incorporates an ISO-7816-3

activation/deactivation sequencer that controls the card

signals. Emergency card deactivation is initiated upon

card extraction or upon any fault generated by the

protection circuitry.

The 73S8023C requires only a single 2.7 V to 3.6 V power

supply, and features a high-efficiency embedded DC-DC

converter. This architecture, plus a Power Down digital

input that allow placing the IC in a very low-power mode

making the 73S8023C particularly suitable for low-power

applications (cell-phones, PDAs, payphones, hand-held

POS terminals…).

ADVANTAGES

• Supports both synchronous and asynchronous smart

cards

• Replacement for TDA8002, with up to 600 mW in

power savings (@ EMV ICCmax condition) !

• The inductor-based DC-DC converter provides higher

current and efficiency

 Ideal for battery-powered applications

 Suitable for high current cards and SAMs: (100 mA

max)

 Single 2.7 V to 3.6 V power supply allows removal

of 5 V from the system

• Power down mode: 2 µA typical

• Package: Small Format (5x5mm) 32-QFN

FEATURES

• Card Interface:

 Complies with ISO-7816-3, EMV 4.0

 A DC-DC Converter provides 3V / 5V to the card

from an external power supply input

 High-efficiency converter: > 80% @ VDD=3.3 V,

VCC=5 V and ICC = 65 mA

 Up to 100 mA supplied to the card

 ISO-7816-3 Activation / Deactivation sequencer

with emergency automated deactivation

 Protection includes 2 voltage supervisors which

detect voltage drops on card VCC and on VDD

power supply

 The VDD voltage supervisor threshold value can be

externally adjusted

 True over-current detection (150 mA max.)

 2 card detection inputs, 1 for either possible switch

configuration

 Full support of synchronous cards

• System Controller Interface:

 3 Digital inputs control the card activation /

deactivation, card reset and card voltage

 3 Digital inputs control the card clock (division rate

and card clock source selection)

 1 Digital output, interrupt to the system controller,

allows the system controller to monitor the card

presence and faults

 1 Power down digital input (places the 73S8023C

in a very low-power mode (card deactivated)

 1 Chip select digital input for parallel operation of

several 73S8023C ICs.

 1 External clock input (STROBE), used for

synchronous operation

 1 Digital output clock, buffered version of signal on

XTALIN

 Crystal oscillator or host clock (XTALIN), up to

27 MHz

• Power Supply: VDD 2.7 V to 3.6 V

• 6 kV ESD Protection on the card interface

APPLICATIONS

• Point of Sales and Transaction Terminals

• Payphones

• Set-Top-Boxes, DVD / HDD Recorders

• Payment card interfaces in portable devices (PDAs,

mobile phones…)

Rev. 1.5

© 2009 Teridian Semiconductor Corporation

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