TDA8035HN Datasheet, PDF (1/32 Pages) NXP Semiconductors – Smart card interface externally by a resistor bridge

TDA8035HN
Smart card interface
Rev. 1.0 — 19 April 2011
Product data sheet
1. General description
The TDA8035 is the cost efficient successor of the well established integrated contact
smart card reader IC TDA8024. It offers a high level of security for the card performing
current limitation, short circuit detection, ESD protection as well as supply supervision.
Operating in 3 V supply domain, the current consumption during the standby mode of the
contact reader is very low and is therefore the ideal component for a power efficient
contact reader.
2. Features and benefits
2.1 Protection of the contact smart card
„ Thermal and short-circuit protections on all card contacts
„ Vcc regulation:
‹ 5 V, 3 V, 1.8 V ± 5 % on 2 × 220 nF multilayer ceramic capacitors with low ESR
‹ current spikes of 40 nA/s (Vcc = 5 V and 3 V) or 15 nA/s (Vcc = 1.8 V) up to
20 MHz, with controlled rise and fall times, filtered overload detection
approximately 120 mA
„ Automatic activation and deactivation sequences initiated by software or by hardware
in the event of a short-circuit, card take-off, overheating, falling V_REG V_DD(INTF),V_DDP
„ Enhanced card-side ElectroStatic Discharge (ESD) protection of (> 8 kV)
„ Supply supervisor for killing spikes during power on and off:
‹ threshold internally fixed
‹ externally by a resistor bridge
2.2 Easy integration into your contact reader
„ SW compatible to TDA8024 and TDA8034
„ 5 V, 3 V, 1.8 V smart card supply
„ DC/DC converter for Vcc generation separately powered from 2.7 V to 5.5 V supply
(VDDP and GNDP)
„ Very low power consumption in Deep Shutdown mode
„ Three protected half-duplex bidirectional buffered I/O lines (C4, C7 and C8 )
„ External clock input up to 26 MHz
„ Card clock generation up to 20 MHz using pins CLKDIV1 and CLKDIV2 with
synchronous frequency changes of f_XTAL, f_XTAL/2, f_XTAL/4 or f_XTAL/8
„ Non-inverted control of pin RST using pin RSTIN
„ Built-in debouncing on card presence contact
„ Multiplexed status signal using pin OFFN