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ST8024 Fiches technique(PDF) 1 Page - STMicroelectronics |
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ST8024 Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 31 page June 2008 Rev 7 1/31 31 ST8024 Smartcard interface Features ■ Designed to be compatible with the NDS conditional access system ■ IC card interface ■ 3 or 5 V supply for the IC (VDD and GND) ■ Three specifically protected half-duplex bi- directional buffered I/O lines to card contacts C4, C7 and C8 ■ DC-DC converter for VCC generation separately powered from a 5 V ± 20% supply (VDDP and PGND) ■ 3 or 5 V ± 5 % regulated card supply voltage (VCC) with appropriate decoupling has the following capabilities: –ICC < 80 mA at VDDP = 4 to 6.5 V – Handles current spikes of 40 nA up to 20 MHz – Controls rise and fall times – Filtered overload detection at approximately 120 mA ■ Thermal and short-circuit protection on all card contacts ■ 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 ■ Enhanced ESD protection on card side (>6 kV) ■ 26 MHz integrated crystal oscillator ■ Clock generation for cards up to 20 MHz (divided by 1, 2, 4 or 8 through CLKDIV1 and CLKDIV2 signals) with synchronous frequency changes ■ Non-inverted control of RST via pin RSTIN ■ ISO 7816, GSM11.11 and EMV (payment systems) compatibility ■ Supply supervisor for spike-killing during power-on and power-off and power-on reset (threshold fixed internally or externally by a resistor bridge) ■ Built-in debounce on card presence contacts ■ One multiplexed status signal off Description 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 set- top-box, IC card readers for banking, identification, pay TV. SO-28 TSSOP28 Table 1. Device summary Order codes Temperature range Package Packaging ST8024CDR -25 to 85 °C SO-28 (tape and reel) 1000 parts per reel ST8024CTR -25 to 85 °C TSSOP28 (tape and reel) 2500 parts per reel www.st.com |
Numéro de pièce similaire - ST8024_08 |
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Description similaire - ST8024_08 |
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