ST ST8024LCTR

The ST8024L is a complete low-cost analog interface for asynchronous Type A, Type B, and Type C smart cards. It can be placed between the card and the microcontroller and perform all power protection and control functions with only a small number of external components. The ST8024LCDR and ST8024LCTR are compatible with the ST8024 (except for the rising/falling values of Vth(ext)).

• Designed to be compatible with the NDS conditional access system (except ST8024LTR)
• ISO 7816, GSM11.11 and EMV 4.2 (payment systems) compatible
• IC card interface
• 3 V or 5 V supply for the ST8024L device (VDD)
• Three specifically protected half-duplex bi-directional buffered I/O lines to card contacts C4, C7 and C8
• Step-up converter for VCC generation separately powered by a 5 V ± 20% supply VDDP and PGND)
• 1.8 V ± 6.5%, 3 V or 5 V ± 5% regulated card supply voltage (VCC) with appropriate decoupling has the following capabilities: -ΔΩ|CC < 80 mA at VDDP = 4.75 to 6.5 V Handles current spikes of 40 nA up to 20 MHz Controls rise and fall times – Filtered overload detection at ~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 dropout
• Enhanced ESD protection on card side (> 6 kV)
• 26 MHz integrated crystal oscillator
• Built-in debounce on card presence contacts
• One multiplexed status signal OFF
• 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 divider)

• Smartcard readers for set-top boxes
• IC card readers for banking
• Identification, pay TV