ISO/IEC 7816-3

Information technology - Identification cards - Integrated circuit(s) cards with contacts - Part 3: Electronic signals and transmission protocols

1 Electrical Signals Description:

2 Voltage and current values:

* Abbreviations:

* I/O

Table 1 - Electrical characteristics of I/O under normal operation conditions.

* VPP

Table 2 - Electrical characteristics of VPP under normal operation conditions.

* CLK

Table 3 - Electrical characteristics of CLK under normal operation conditions.

* RST

Table 4 - Electrical characteristics of RST under normal operation conditions.

* VCC

Table 5 - Electrical characteristics of VCC under normal operation conditions.

3 Operating procedure for integrated circuit(s) cards:

3.a Connection and activation of the contacts:

3.b Reset of the card:

Figure 1 - Reset of the card

Figure 2 - Reset of the card when a synchronous answer is expected.

3.c Deactivation of the contacts

4 Answer to Reset:

* Asynchronous transmission:

* Synchronous transmission:

4.a Answer to Reset in asynchronous transmission

* Bit duration

* Character frame during answer to reset

Figure 3 - Character frame

* Error detection and character repetition

* Structures and content

Figure 4 - General configuration of the Answer to Reset

* Structure of TS, the initial character

Figure 5 - Initial character TS

* Structure of the subsequent characters in the Answer to Reset

Figure 6 - Informations provided by T0

* Interface characters TAi, TBi, TCi, TDi

Figure 7 - Informations provided by TDi

* Historical characters T1, T2, ... ,TK

* Check character TCK

* Protocol type T

* Specifications of the global interface bytes

Table 6 - Clock rate conversion factor F

Table 7 - Bit rate afjustment factor D

Table 8 - Maximum programming current factor I

4.b Answer to Reset in synchronous transmission

* Clock frequency and bit rate

* Structure of the header of the Answer to Reset

* Timing of the haeder

* Data content of the header

5 Protocol type selection (PTS)

5.a PTS protocol

5.b Structure and content of PTS request and PTS confirm

6 Protocol type T=0, asynchronous half duplex character transmission protocol

6.a Specific interface parameters: the work waiting time

6.b Structure and processing of commands

Figure 8 - Byte transmission diagram

* Command header sent by the interface device

* Procedure bytes sent by the card

* Acknoledge bytes

* Null byte (= '60')

* Status bytes (SW1='6x' or '9x', expect '60'; SW2 any value)

* Supplement (were seen sometimes):