2.ELECTRICAL AND PHYSICAL CHARACTERISTICSU.K.
TCS_01All electronic signals shall be in accordance with ISO/IEC 7816-3 unless specified otherwise.U.K.
TCS_02The location and dimensions of the card contacts shall comply with the ISO/IEC 7816-2.U.K.
2.1. Supply Voltage and Current Consumption U.K.
TCS_03The card shall work according to specifications within the consumption limits specified in ISO/IEC 7816-3.U.K.
TCS_04The card shall work with Vcc = 3V (± 0,3V) or with Vcc = 5V (± 0,5V).U.K.
Voltage selection shall be performed according to ISO/IEC 7816-3.
2.2. Programming Voltage Vpp U.K.
TCS_05The card shall not require a programming voltage at pin C6. It is expected that pin C6 is not connected in an IFD. Contact C6 may be connected to Vcc in the card but shall not be connected to ground. This voltage should not be interpreted in any case.U.K.
2.3. Clock generation and Frequency U.K.
TCS_06The card shall operate within a frequency range of 1 to 5 MHz and may support higher frequencies. Within one card session the clock frequency may vary ± 2 %. The clock frequency is generated by the Vehicle Unit and not the card itself. The duty cycle may vary between 40 and 60 %.U.K.
TCS_07Under conditions contained into the card file EF ICC, the external clock can be stopped. The first byte of the EF ICC file body codes the Clockstop mode conditions:U.K.
| Low | High | ||
|---|---|---|---|
| Bit 3 | Bit 2 | Bit 1 | |
| 0 | 0 | 1 | Clockstop allowed, no preferred level |
| 0 | 1 | 1 | Clockstop allowed, high level preferred |
| 1 | 0 | 1 | Clockstop allowed, low level preferred |
| 0 | 0 | 0 | Clockstop not allowed |
| 0 | 1 | 0 | Clockstop only allowed on high level |
| 1 | 0 | 0 | Clockstop only allowed on low level |
Bits 4 to 8 are not used.
2.4. I/O Contact U.K.
TCS_08The I/O contact C7 is used to receive data from and to transmit data to the IFD. During operation only either the card or the IFD shall be in transmit mode. Should both units be in transmit mode no damage shall occur to the card. Unless transmitting, the card shall enter the reception mode.U.K.
2.5. States of the Card U.K.
TCS_09The card works in two states while the supply voltage is applied:U.K.
Operation state while executing commands or interfacing with Digital Unit,
Idle state at all other times; in this state all data shall be retained by the card.