The Teridian 73S8024RN is a single smart card (ICC) interface IC that can be controlled by a dedicated control bus. The 73S8024RN has been designed to provide full electrical compliance with ISO 7816-3, EMV 4.0 (EMV2000) and NDS specifications.
Interfacing with the system controller is done through a control bus, composed of digital inputs to control the interface, and one interrupt output to inform the system controller of the card presence and faults. The card clock can be generated by an on-chip oscillator using an external crystal or by connection to a clock signal.
FEATURES
• Card Interface:
- Complies with ISO 7816-3, EMV 4.0, and NDS
- An LDO voltage regulator provides 3V / 5V to the card from an external power supply input
- Provides at least 90mA to the card
- ISO 7816-3 Activation / Deactivation sequencer with emergency automated deactivation on card removal or fault detected by the protection circuitry
- Protection includes 3 voltage supervisors that detect voltage drops on VCC (card), VDD (digital)*, and VPC (regulator) power supplies
- The VDD voltage supervisor threshold value can be externally adjusted*
- Over-current detection 150mA max
- Card clock stop high or low
- 2 card detection inputs, 1 for each possible user polarity
