AT90SCR100 datasheet(177/433 Pages) ATMEL

177 / 433 page

177

TPR0327AY–SMS–30Jan09

AT90SCR100

15. Smart Card Interface Block (SCIB)

The SCIB provides all signals to interface directly with a smart card. The compliance with the

ISO7816, EMV’2000 and GSM standards has been certified. Also, the WHQL standard can be

achieved with an appropriate software.

15.1

Features

• Support of ISO/IEC 7816

• Performances: Up to 3 cycles per etu, and ISO clock up to 4.8Mhz

• Frequency up to 12Mhz

• Character mode

• One transmit/receive buffer

• 11 bits ETU counter

• 9 bits guard time counter

• 32 bits waiting time counter

• Auto character repetition on error signal detection in transmit mode

• Auto error signal generation on parity error detection in receive mode

• Power off sequence generation

• Manual mode to drive directly the card I/O

15.2

Overview

All synchronous (e.g. memory card), asynchronous and USB smart cards (e.g. microprocessor

card) are supported. The component supplies the different voltages requested by the smart

card. The power_on and power_off sequence is directly managed by the SCIB.

To enable the communication on CC4/CC8 with USB smart cards, the USB Host Controller must

be enabled.

The card presence switch of the smart card connector is used to detect card insertion or card

removal. In the case of card removal, the SCIB deactivates the smart card using the deactivation

sequence. An interrupt can be generated when a card is inserted or removed.

Any malfunction is reported to the microcontroller (interrupt + control register).

The different operating modes are configured by internal registers.

15.3

Block Diagram

The Smart Card Interface Block diagram is shown Figure 15-1:

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