AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 64
AT89C5122
Manufacturer Part Number
AT89C5122
Description
MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C5122.pdf
(213 pages)
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Smart Card Interface
Block (SCIB)
64
AT8xC5122/23
The SCIB provides all signals to interface directly with a smart card. The compliance
with the ISO7816, EMV’2000, GSM and WHQL standards has been certified.
Both synchronous (e.g. memory card) and asynchronous smart cards (e.g. micropro-
cessor card) are supported. The component supplies the different voltages requested by
the smart card. The power off sequence is directly managed by the SCIB.
The card presence switch of the smart card connector is used to detect card insertion or
card removal. In case of card removal, the SCIB de-activates the smart card using the
de-activation 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.
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Support of ISO/IEC 7816
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 on and power off sequence generation
Manual mode to drive directly the card I/O
4202D–SCR–06/05
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