This document describes the hardware features, contactless features, and security features of the ST23ZC08 secure microcontroller. The hardware features include an enhanced 8/16-bit ST23 CPU core, 16 Mbytes of linear addressable memory, 92 Kbytes of User ROM, 4 Kbytes of User RAM, etc. The contactless features comply with ISO/IEC 14443 Type A, B and B', and PayPass™ standards, and operate at a carrier frequency of 13.56 MHz. The security features include active shield, environmental parameter monitoring, protection mechanisms against faults, true random number generator, 16-bit Cyclic Redundancy Check calculation block, unique serial number on each die, AES accelerator, and three-key Triple DES accelerator.
The ST23ZC08 is a secure microcontroller designed specifically for smartcard applications. It features an enhanced 8/16-bit ST23 CPU core with up to 28 MHz clock frequency and includes 92 Kbytes of User ROM, 4 Kbytes of User RAM, and 8 Kbytes of User EEPROM.
The device supports contactless communication compliant with ISO/IEC 14443 Type A, B, and B' standards via an RF UART operating at 13.56 MHz. Key security features include a True Random Number Generator (TRNG), AES accelerator, Triple DES accelerator, and active shield monitoring.
| CPU Core | Enhanced 8/16-bit ST23 CPU core |
|---|---|
| EEPROM Size | 8 Kbytes |
| User ROM Size | 92 Kbytes |
| User RAM Size | 4 Kbytes |
| Operating Temperature | -25° to +85°C |
| CPU Clock Frequency | up to 28 MHz |
| RF Carrier Frequency | 13.56 MHz |
| Compliance Standards | ISO/IEC 14443 Type A, B and B' |
The device offers 30-year data retention at 25°C.
Yes, it complies with PayPass™ standards in addition to ISO/IEC 14443.
The RF UART supports speeds up to 848 Kops.