ST8034HN Datasheet, PDF (1/31 Pages) STMicroelectronics – 24-pin smartcard interfaces

ST8034HN, ST8034HC
24-pin smartcard interfaces
QFN24 4 x 4 x 0.8 mm
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 (V_CC), pin-selectable. Ensures
controlled V_CC rise 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
Datasheet - production data
 Automatic activation and deactivation
sequences initiated by the microcontroller
 Emergency deactivation sequences initiated
by a card supply short-circuit, card take-off,
falling V_DD, V_DDP, or V_DD(INTF) or by the
interface device overheating
 Voltage supply supervisors
– with a fixed threshold (V_DD, V_DDP)
– with an external resistor divider to set the
V_DD(INTF) threshold (PORADJ pin)
 Multipurpose card status signal OFF
 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
Applications
Smartcard readers for
 Set-top boxes
 Pay-TV
 Identification
 Banking
 Tachographs
October 2013
This is information on a product in full production.
DocID024511 Rev 2
1/31
www.st.com
1