AT90SC3232CS

The AT90SC3232CS is a low-power, high-performance, 8-/16-bit microcontroller, based n the secure AVR RISC architecture, with Flash program memory, EEPROM data emory and a crypto-coprocessor. By executing powerful instructions in a single clock ycle, the AT90SC3232CS achieves throughputs close to 1 MIPS per MHz. Its Harvard rchitecture includes 32 general-purpose working registers directly connected to the LU, allowing two independent registers to be accessed in one single instruction executed n one clock cycle.

The AT90SC3232CS uses a new secure AVR CPU that allows the linear addressing of p to 8M bytes of code and up to 16M bytes of data, and also provides a number of new unctional and security features.

The AT90SC3232CS includes 64K bytes of Atmel's high density, non volatile memory.

The AT90SC3232CS on-chip Flash allows the program memory to be reprogrammed in-system and ocked securely. This technology combined with the versatile CPU on a monolithic chip rovides a highly flexible and cost-effective solution to many smart card applications.

The crypto engine featured in the AT90SC3232CS series is the SC16, a 16-bit processor dedicated o performing fast encryption and authentication functions.

Additional security features include power, frequency and temperature protection logic, ogical scrambling on program data and addresses, power analysis countermeasures, nd memory accesses controlled by a supervisor mode.A block diagram of the AT90SC3232CS is shown in Figure 1.