The ST23YR04 is a dual contactless smartcard MCU from STMicroelectronics with 4Kbytes EEPROM, enhanced security, cryptoprocessor and optimized RF performance.
The ST23YR04 is a serial access microcontroller custom-designed for secure smartcard applications based on an enhanced STMicroelectronics 8/16-bit CPU core. It features 16 Mbytes of linear addressable memory, including 230 Kbytes of User ROM and 4 Kbytes of User EEPROM with OTP capabilities.
The device includes an RF interface compatible with ISO/IEC 14443 type B and Innovatron standards, supporting contactless communication up to 848 Kbits/s. It also features an ISO/IEC 7816-3 compliant asynchronous receiver transmitter (IART) for high-speed serial data support. Security is enhanced by an active shield, hardware security DES accelerator, and a true random number generator (TRNG).
| CPU Core | Enhanced 8/16-bit ST23 CPU core |
|---|---|
| Linear Addressable Memory | 16 Mbytes |
| User ROM | 230 Kbytes |
| User RAM | 4 Kbytes |
| User EEPROM | 4 Kbytes |
| OTP Area | 128 bytes |
| Data Retention | 30 years at 25° C |
| Erase/Write Cycles | 500,000 cycles at 25° C |
| CPU Clock Frequency | Up to 29 MHz |
| External Clock Frequency | Up to 10 MHz |
| Supply Voltage | 3V and 5 V |
| RF Frame Size | Up to 512 bytes |
| Compliance | ISO/IEC 14443 type B, Innovatron, PayPass |
The device complies with ISO/IEC 14443 type B, Innovatron (type B'), and PayPass standards.
The CPU clock frequency can reach up to 29 MHz.
Yes, it includes a hardware security enhanced DES accelerator.
The EEPROM provides 30-year data retention at 25° C.