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AN2646 Datasheet(PDF) 17 Page - STMicroelectronics

Part # AN2646
Description  Smartcard interface with the STM8S microcontroller
PDF  43 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2646 Datasheet(HTML) 17 Page - STMicroelectronics

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AN2646 - Application note
ISO 7816-3 – electronic signal and transmission protocol
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The total length of the ATR sequence is limited to 33 bytes and must adhere to the following
format:
Table 7.
Answer-to-reset structure
Character ID
Definition
Initial character section
TS
Mandatory initial character
Format character section
T0
Indicator for presence of interface characters
Interface character section
TA1
Global, codes F1 and D1
TB1
Global, codes 11 and Pl1
TC1
Global, code N
TD1
Codes Y2 and T
TA2
Specific
TB2
Global, code Pl2
TC2
Specific
TD2
Codes Y3 and T
TA3
TAi, TBi and TCi are specific
..TDi
Codes Yi+1 and T
T1
Card specific information
Historical character section
...TKi
(Maximum of 15 characters)
Check character section
TCK
Optional check character



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