Reader Interface. AT83C24B Datasheet

AT83C24B Datasheet PDF, Equivalent


Part Number

AT83C24B

Description

Smart Card Reader Interface

Manufacture

ATMEL Corporation

Total Page 30 Pages
PDF Download
Download AT83C24B Datasheet PDF


AT83C24B Datasheet
Features
Smart Card Interface
– Compliance with ISO 7816, EMV2000, GIE-CB, GSM and WHQL Standards
Card Clock Stop High or Low for Card Power-down Modes
Support Synchronous Cards with C4 and C8 Contacts
Card Detection and Automatic de-activation Sequence
Programmable Activation Sequence
– Direct Connection to the Smart Card
Logic Level Shifters
Short Circuit Current Limitation (see electrical characteristics)
8kV+ ESD Protection (MIL/STD 883 Class 3)
– Programmable Voltage
5V ±5% at 65 mA (Class A)
3V ±0.2V at 65 mA (Class B)
1.8V ±0.14V at 40 mA
– Low Ripple Noise: < 200 mV
Versatile Host Interface
– ICAM (Conditional Access) Compatible
– Two Wire Interface (TWI) Link
Programmable Address Allow up to 8 Devices
– Programmable Interrupt Output
– Automatic Level Shifter (1.6V to VCC)
Reset Output Includes
– Power-On Reset (POR)
– Power-Fail Detector (PFD)
High-efficiency Step-up Converter: 80 to 98% Efficiency
Extended Voltage Operation: 3V to 5.5V
Low Power Consumption
– 180 mA Maximum In-rush Current
– 30 μA Typical Power-down Current (without Smart Card)www.DataSheet4U.com
4 to 48 MHz Clock Input, 7 MHz Min for Step-up Converter (for AT83C24)
18 to 48MHz Clock input (for AT83C24NDS)
Industrial Temperature Range: -40 to +85°C
Packages: SO28 and QFN28
Smart Card
Reader
Interface with
Power
Management
AT83C24B
AT83C24NDS
Description
The AT83C24 is a smart card reader interface IC for smart card reader/writer applica-
tions such as EFT/POS terminals and set top boxes. It enables the management of
any type of smart card from any kind of host. Up to 8 AT83C24 can be connected in
parallel using the programmable TWI address.
Its high efficiency DC/DC converter, low quiescent current in standby mode makes it
particularly suited to low power and portable applications. The reduced bill of material
allows reducing significantly the system cost. A sophisticated protection system guar-
antees timely and controlled shutdown upon error conditions.
The AT83C24NDS is a dedicated version approved by NDS for use with NDS Video-
Guard conditional access software in set-top boxes. All AT83C24 datasheet is
applicable to AT83C24NDS. The main differences between AT83C24 and
AT83C24NDS are listed below:
1/ CLASS A card supplied with CVCC = 4.75 to 5.25V for AT83C24NDS,
CLASS A card supplied with CVCC = 4.6 to 5.25V for AT83C24
2/ 18MHz minimum on input clock for AT83C24NDS
3/ Up to 10µF for capacitor connected on CVCC pin for AT83C24,
3.3µF mandatory for AT83C24NDS
4234F–SCR–10/05

AT83C24B Datasheet
Acronyms
TWI: Two-wire Interface
POR: Power On Reset
PFD: Power Fail Detect
ART: Automatic Reset Transition
ATR: Answer To Reset
MSB: Most Significant Bit
LSB: Least Significant bit
SCIB: Smart Card Interface Bus
Block Diagram
VCC
VSS
LI CVSS
DVCC
EVCC
RESET
PRES/ INT
A2/CK, A1/RST, A0/3V, CMDVCC
SCL
SDA
Voltage
supervisor
POR/PFD
DC/DC
Converter
TWI
Controller
Main
Control
& Logic Unit
Timer
16 Bits
CVCC
CVCCIN
CLK
I/O, C4, C8
Clocks Controller
Analog
Drivers
CPRES
CRST
CIO, CC4, CC8
CCLK
2 AT83C24
4234F–SCR–10/05


Features Datasheet pdf Features • Smart Card Interface – Co mpliance with ISO 7816, EMV2000, GIE-CB , GSM and WHQL Standards Card Clock Sto p High or Low for Card Power-down Modes Support Synchronous Cards with C4 and C8 Contacts Card Detection and Automati c de-activation Sequence Programmable A ctivation Sequence – Direct Connectio n to the Smart Card Logic Level Shifter s Short Circuit Current Limitation (see electrical characteristics) 8kV+ ESD P rotection (MIL/STD 883 Class 3) – Pro grammable Voltage 5V ±5% at 65 mA (Cla ss A) 3V ±0.2V at 65 mA (Class B) 1.8V ±0.14V at 40 mA – Low Ripple Noise: < 200 mV Versatile Host Interface – ICAM (Conditional Access) Compatible Two Wire Interface (TWI) Link Program mable Address Allow up to 8 Devices – Programmable Interrupt Output – Auto matic Level Shifter (1.6V to VCC) Reset Output Includes – Power-On Reset (PO R) – Power-Fail Detector (PFD) High-e fficiency Step-up Converter: 80 to 98% Efficiency Extended Voltage Operation: 3V to 5.5V Low Power Consumption – 180 mA Maximum.
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