描述 Description

The ST8034HN and ST8034HC devices are complete low-cost analog interfaces for asynchronous and synchronous smartcards operating at a supply voltage of 5 V, 3 V or 1.8 V. The ST8034HN and ST8034HC devices can be placed between the card and the microcontroller to provide all supply, protection, detection and control functions, with just a few external components.

特性 Features

? Complete smartcard interface
? ISO 7816, NDS and EMV 4.3 payment systems compatible
? Three protected half-duplex bidirectional buffered I/O lines to the smartcard
? 5 V, 3 V or 1.8 V supply voltage for the smartcard (VCC), pin-selectable. Ensures controlled VCCrise and fall times and provides smart overload detection with glitch immunity.
? Very low power consumption in deep shutdown mode
? Chip select function allows the device interface to be isolated from the microcontroller signals - allows parallel combination of the card interface devices (ST8034HC)
? Card clock generation by integrated crystal oscillator or from external clock source
? Card clock frequency up to 20 MHz, programmable by CLKDIV1 and CLKDIV2 pins (ST8034HN) or by CLKDIV pin (ST8034HC), with synchronous frequency changes
? Automatic activation and deactivation sequences initiated by the microcontroller
? Emergency deactivation sequences initiated by a card supply short-circuit, card take-off, falling VDD, VDDP, or VDD(INTF)or by the interface device overheating
? Voltage supply supervisors
?with a fixed threshold (VDD, VDDP)
?with an external resistor divider to set the VDD(INTF)threshold (PORADJ pin)
? Multipurpose card status signalOFF
? Non-inverted card reset pin RST driven by the RSTIN input
? Thermal and short-circuit protection of all card contacts
? Card presence detection contacts debounced
? Enhanced card side ESD protection of 8 kV
? Space saving QFN24 4 x 4 x 0.8 mm package
? Temperature range -25 to +85 °C

簡介

ST8034HN屬于集成電路（IC）的專用。由制造生產(chǎn)的ST8034HN專用該系列產(chǎn)品可提供所需的功能，用以將信息源/信宿連到各種復(fù)雜或范圍狹窄應(yīng)用中的傳感器、變送器、致動(dòng)器、傳輸介質(zhì)或其他此類端點(diǎn)。例如，汽車安全氣囊驅(qū)動(dòng)器、車身控制和信息娛樂總線、自適應(yīng)電纜均衡器、智能卡等等。