73S8023C Interface Datasheet

73S8023C Datasheet, PDF, Equivalent


Part Number

73S8023C

Description

Smart Card Interface

Manufacture

Teridian Semiconductor

Total Page 27 Pages
Datasheet
Download 73S8023C Datasheet


73S8023C
Simplifying System Integration™
www.DataSheet4U.com
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
1

73S8023C
73S8023C Data Sheet
FUNCTIONAL DIAGRAM
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NC
GND
4
21
5
PWRDN
CS 8
CMDVCC 18
19
RSTIN
31
5V/3V
22
OFF
29
CLKDIV1
30
CLKDIV2
23
XTALIN
24
XTALOUT
32
CLKOUT
26
IOUC
27
AUX1UC
28
AUX2UC
VDD
20
VDDF_ADJ
17
LIN
2
6
VDD
3
6
VDD VOLTAGE SUPERVISOR
VOLTAGE REFERENCE
ICC FAULT
VDD FAULT VCC FAULT
DC-DC
CONVERTER
DIGITAL
CIRCUITRY
&
FAULT LOGIC
R-C
OSC.
Int_Clk
ICC RESET
BUFFER
ICC CLOCK
BUFFER
XTAL
OSC
CLOCK
GENERATION
ISO-7816-3
SEQUENCER
TEMP FAULT
OVER
TEMP
ICC I/O BUFFERS
1
GND
12
GND
15
VCC
14
RST
13
CLK
25
STROBE
16
CLKSEL
7
PRES
6
PRES
9
I/O
11
AUX1
10
AUX2
Figure 1: 73S8023C Block Diagram
2 Rev. 1.5


Features www.DataSheet4U.com 73S8023C Smart Card Interface Simplifying System Integrati on™ DATA SHEET April 2009 DESCRIPTI ON The Teridian 73S8023C is a low-power , high efficiency, single smart card in terface IC suitable for 3V and 5V cards . It provides full electrical complianc e with ISO7816-3 and EMV 4.0 (EMV2000) specifications. Hardware support for an y type of synchronous cards (memory car ds) is provided. Interfacing with the s ystem controller is done through the co ntrol bus; composed of digital inputs t o control the interface, and one interr upt output to inform the system control ler of the card presence and faults. Da ta exchange with the card is managed fr om the system controller using the I/O line (and eventually the auxiliary I/O lines). A chip select input allows mult iple 73S8023C ICs to share the same con trol bus. When chip select is set low, the host microcontroller inputs are lat ched and outputs are taken to a high im pedance state. The card clock signal can be generated by an on-ch.
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