Safety controller, e.g. for use in chip cards or smart cards, has processor that can switch between power mode and security mode

摘要

The controller [10] has a CPU [12] and computer circuitry [14], e.g. a universal asynchronous receiver-transmitter (UART) module, oscillator for data transmission. The controller operates to a program stored in electrically EPROM (EEPROM) or ROM memory [18]. The computer can switch between a power mode for fast operation and a security mode consuming low power.