ST23ZR02 is a secure microcontroller with enhanced security, 2 Kbytes EEPROM and dual interface, which is offered by STMicroelectronics.
The ST23ZRO02 is a secure microcontroller designed specifically for secure smartcard applications. It is based on an enhanced 8/16-bit STMicroelectronics CPU core with 16 Mbytes of linear addressable memory, including 92 Kbytes of User ROM and 4 Kbytes of User RAM. The device utilizes highly reliable CMOS EEPROM technology with 30-year data retention and 500,000 erase/write cycles endurance.
The microcontroller includes an RF interface with an RF Universal Asynchronous Receiver Transmitter (RF UART) enabling contactless communication up to 848 Kbps, compliant with ISO/IEC 14443-A and ISO/IEC 14443-B standards. Key security features include an active shield, monitoring of environmental parameters, a true random number generator (TRNG), a 16-bit CRC calculation block, and AES and Triple DES accelerators.
| CPU Core | Enhanced 8/16-bit ST23 CPU core |
|---|---|
| Linear Addressable Memory | 16 Mbytes |
| User ROM | 92 Kbytes |
| User RAM | 4 Kbytes |
| User EEPROM | 2 Kbytes |
| User OTP Area | 128 bytes |
| Data Retention | 30 years at 25°C |
| Erase/Write Cycles | 500,000 at 25°C |
| Operating Temperature | -25° to +85°C |
| Supply Voltage | 2.7V to 5.5V |
| External Clock Frequency | up to 10 MHz |
| CPU Clock Frequency | up to 28 MHz |
| RF UART Speed | up to 848 Kops |
| RF Carrier Frequency | 13.56 MHz |
| RF Frame Size | up to 512 bytes |
| ESD Protection | greater than 5 kV (HBM) |
The device complies with ISO/IEC 14443 Type A, B and B', and PayPass standards.
The maximum CPU clock frequency is up to 28 MHz.
It has three 8-bit timers with watchdog and interrupt capability.
The EEPROM has 500,000 erase/write cycles endurance at 25°C.