TDA8037
Low power 3V smart card interface
Rev. 1.2 — 30 June 2016
Product data sheet
1. General description
The TDA8037 is the cost efficient successor of the established integrated contact smart
card reader IC TDA8035. 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 shutdown mode of the contact
reader is very low. It 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 protection on all card contacts
VCC regulation:
3 V 5 % on 2 220 nF multilayer ceramic capacitors with low ESR
Current spikes of 40 nA 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, VDDhost, VREG and VDD
dropping
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 (with SO28 package only)
2.2 Easy integration into your contact reader
SW compatible to TDA8024, TDA8034 and TDA8035
3 V smart card supply
Three protected half-duplex bidirectional buffered I/O lines (C4, C7 and C8)
External clock input up to 20 MHz
Card clock generation up to 20 MHz using pin CLKDIV with synchronous frequency
changes of fCLKIN, fCLKIN/2 (with SO28 package only)
Non-inverted control of pin RST using pin RSTIN
Built-in debouncing on card presence contact
Multiplexed status signal using pin OFFN
Chip Select digital input for parallel operation of several TDA8037 ICs (with SO28
package only)