Smartcard interface

The ST8024 is a complete low cost analog interface for asynchronous 3 V and 5 V smart cards. It can be placed between the card and the microcontroller with few external components to perform all supply protection and control functions. ST8024 is a direct replacement of ST8004.

Main applications are: smartcard readers for settop- box, IC card readers for banking, identification, pay TV.

Key Features

  • 26 MHz integrated crystal oscillator
  • Enhanced ESD protection on card side (> 6 kV)
  • Non-inverted control of RST via pin RSTIN
  • Clock generation for cards up to 20 MHz (divided by 1, 2, 4 or 8 through CLKDIV1 and CLKDIV2 signals) with synchronous frequency changes
  • Supply supervisor for spike-killing during power-on and power-off and power-on reset (threshold fixed internally or externally by a resistor bridge)
  • ISO 7816, GSM11.11 and EMV (payment systems) compatibility
  • One multiplexed status signal off
  • Built-in debounce on card presence contacts
  • Thermal and short-circuit protection on all card contacts
  • 3 or 5 V ± 5 % regulated card supply voltage (VCC ) with appropriate decoupling has the following capabilities:Icc < 80 mA at VDD P = 4 to 6.5 VHandles current spikes of 40 nA up to 20 MHzControls rise and fall timesFiltered overload detection at approximately 120 mA
  • Designed to be compatible with the NDS conditional access system
  • 3 or 5 V supply for the IC (VDD and GND)
  • IC card interface
  • DC-DC converter for VCC generation separately powered from a 5 V ± 20% supply (VDD P and PGND)
  • Automatic activation and deactivation sequences; initiated by software or by hardware in the event of a short-circuit, card take-off, overheating, VDD or VDDP drop-out
  • Three specifically protected half-duplex bidirectional buffered I/O lines to card contacts C4, C7 and C8

Circuit Diagram

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circuit_diagram_11175_thumbnail.png

Resources

Technical Documentation

Product Specifications
Description Version Size
DS4207 DS4207: Smartcard interface 8.1 1 MB
Application Notes
Description Version Size
AN3275 AN3275: Improving the performance of smartcard interfaces using the ST8024L 1.1 1 MB
AN2269 AN2269: Using the ST8024 smartcard interface 1.3 813 KB
Support & Community


Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST8024CDR SO-28 Tape And Reel -25 85 Active 0.91 1000 NEC EAR99 MALAYSIA MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY
ST8024CTR TSSOP28 9.7 x 4.4 Tape And Reel -25 85 Active 0.85 1000 NEC EAR99 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST8024CDR ActiveSO-28IndustrialEcopack1 0 0
ST8024CTR ActiveTSSOP28 9.7 x 4.4IndustrialEcopack3 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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