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| Features * Smart Card Interface with Level Shifter - Standard Version Perform ISO Output Signals from Data Input Up to 8 Couplers Can Be Addressed (with Programmable Addresses) - Transparent Version Use Directly ISO Input Signals for Easy Implementation Up to 2 Couplers Can Be Addressed Power Management & Smart Card Interface - Compliant with ISO 7816, EMV2000, GIE-CB, GSM and WHQL Standards - Step-up/down Converter with Programmable Voltage Output: 5V and 3V (60 mA), 1.8V (20 mA) High Efficiency From 80% to 98% 4 to 48 MHz Clock Input (7 MHz Min for Step-up Converter) - Card Detection and Automatic Deactivation Sequence - Programmable Activation Sequence Direct Connection to Smart Card - Short Circuit Current Limitation - 4 kV+ ESD Protection (MIL/STD 833 Class 3) Two-wire Host Serial Interface Power-on Reset (POR) and Power-fail Detector (PFD) with Reset Output Extended Voltage Range: 2.85 to 5.5V Low Power Consumption - 1 mA Maximum Operating Current - 25 A Typical Power-down Current (without Smart Card) Industrial Temperature Range: -40 to +85C Package: TSSOP20 * * * * * * * * C51 Microcontroller with Smart Card Interface and Level Shifter AT83C24 Advance Information Summary Description AT83C24 is a smart card interface IC with integrated level shifter for smart card reader/writer applications 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 eight AT83C24 devices can be connected in parallel, thanks to the programmable TWI address. Its high efficiency DC/DC converter and its low power-down current make it particularly suited to low-power and portable applications. The reduce bill of material allow to significantly reduce the system cost. A sophisticated power management system guarantees the functionality of the device. Rev. 4199AS-SCR-11/02 Note: This is a summary document. For more information, please contact cardreader@nto.atmel.com. Block Diagram VCC VSS LI DVCC EVCC RESET Voltage Supervisor POR/PFD DC/DC Converter CVCC CVSS INT A2, A1, A0 SCL SDA TWI Controller Main Control & Logic Unit Timer 16 bits Clock Circuit DC/DC Analog Drivers CPRES CRST CIO IO CCLK CLK Clock Circuit CCLK Pin Description Pinout Figure 1. AT83C24 20-pin TSSOP RESET DVCC VSS VCC CVSS LI CVCC CRST CCLK CPRES 1 2 3 4 5 6 7 8 9 10 20 19 18 17 IO CLK INT EVCC A2 A1 A0 SCL SDA CIO TSSOP20 16 15 14 13 12 11 2 AT83C24 Summary 4199AS-SCR-11/02 AT83C24 Summary All the AT83C24 signals are detailed in Table 1. Table 1. Pin Description Internal Signal Name Power Supply A2-A1-A0 EVCC 2 kV I O opendrain TWI bus slave address selection input A2 and A1 pins are connected to RST and CLK signals in "transparent mode". INT interrupts the microcontroller. An internal Pull-up to EVCC can be activated in the pad if necessary using INT_PULLUP bit (CONFIG4 register). MCU Interface Function RESET VCC 2 kV I/O opendrain Power-on reset and Power-fail detection output (active low). A low level on this pin keeps the device under reset when applied on power-on or generates a power-fail reset if applied when the device is running. Asserting RESET when the chip is in Shut-Down mode returns the chip to normal operation. 2 kV I/O opendrain I/O opendrain I/O MCU Interface Function TWI serial data ESD Type Description INT EVCC 2 kV SDA VCC SCL VCC 2 kV MCU Interface Function TWI serial clock MCU Interface Function Copy of Card I/O MCU Interface Function Master Clock and high level reference for the I/O pin Smart card interface function Card I/O Smart card interface function Internal/external Pull-up (see Pull-up bit) Card presence Smart card interface function Card clock Smart card interface function Card reset Supply Voltage VCC is used to power the internal voltage regulators and I/O buffers. DC/DC Input IO EVCC 2 kV CLK EVCC 2 kV I CIO CVCC 4 kV+ I/O CPRES VCC 4 kV+ I (pull-up) CCLK CVCC 4 kV+ O CRST CVCC 4 kV+ O VCC 2 kV+ PWR LI 2 kV+ PWR LI must be tied to VCC through an external coil (typically 4.7 H) and provide the current for the charge pump of the DC/DC converter. It may be directly connected to VCC if the step-up converter is not used. Card Supply Voltage CVCC 4 kV+ PWR CVCC is the programmable voltage output for the card interface. It must be connected to an external decoupling capacitor (4.7 to 10 F) 3 4199AS-SCR-11/02 Table 1. Pin Description (Continued) Internal Signal Name Power Supply Digital Supply Voltage DVCC 2 kV+ PWR Is internally generated and used to supply the digital core. This pin has to be connected to an external capacitor of 100 nF and should not be connected to other devices. Extra Supply Voltage EVCC 2 kV+ PWR EVCC is used to supply the level shifters of host interface I/O pin and CLK pin. EVCC voltage can be supplyied from the external EVCC pin or generated internally by an automatic follow up of the logic high level on the I/O pin (connect a 100nF to ground in this configuration). DC/DC Ground CVSS is used to sink high shunt currents from the external coil. Ground ESD Type Description CVSS VSS 2 kV+ GND GND 4 AT83C24 Summary 4199AS-SCR-11/02 AT83C24 Summary Typical Application Figure 2. Typical Application Diagram VCC L1 4.7 mH C1 VSS 100 nF VCC A1 A0 LI A2 CVCC + 100 nF 10 F TWI SCL SDA RESET INT IO CLK AT83C24 VSS CVSS VCC VSS VCC C2 VSS C3 RST INT0 Px.y CRST CIO CPRES CCLK Card 0 VCC L2 4.7 mH C4 100 nF A1 A0 XTAL1 XTAL2 LI A2 VSS CVCC SCL SDA AT83C24 4 to 48 MHz RESET INT IO CLK CRST CIO CPRES CCLK VSS VSS CVSS VCC VSS C51 MICROCONTROLLER VCC CVSS Card 1 VCC L 4.7 mH C 100 nF VCC A2 A1 A0 CVSS VSS CVCC SCL SDA RESET INT IO CLK CRST CIO CPRES CCLK AT83C24 CVSS VCC VSS LI Card n 5 4199AS-SCR-11/02 Ordering Information Table 2. Possible Order Entries Part Number AT83C24-6GSIL AT83C24-6GRIL Supply Voltage 2.85 - 5.4V 2.85 - 5.4V Temperature Range Industrial Industrial Package TSSOP20 TSSOP20 Packing Stick Reel 6 AT83C24 Summary 4199AS-SCR-11/02 AT83C24 Summary Package Drawing TSSOP20 7 4199AS-SCR-11/02 Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL (49) 71-31-67-0 FAX (49) 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL (33) 2-40-18-18-18 FAX (33) 2-40-18-19-60 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France TEL (33) 4-76-58-30-00 FAX (33) 4-76-58-34-80 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France TEL (33) 4-42-53-60-00 FAX (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL 1(719) 576-3300 FAX 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland TEL (44) 1355-803-000 FAX (44) 1355-242-743 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 literature@atmel.com Web Site http://www.atmel.com (c) Atmel Corporation 2002. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life support devices or systems. ATMEL (R) is a registered trademark of Atmel. Other terms and product names may be the trademarks of others. Printed on recycled paper. 4199AS-SCR-11/02 /xM |
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