ST23ZL18 is a smartcard MCU with enhanced security, crypto-processor, and 18 Kbyte EEPROM. It features an enhanced 8/16-bit ST23 CPU core with 16 Mbytes of linear addressable memory, 300 Kbytes of User ROM, 6 Kbytes of User RAM, 2 Kbytes of NESCRYPT RAM, 18 Kbytes of User EEPROM including 128 Bytes of User OTP area. The product also includes an enhanced NESCRYPT crypto-processor, hardware security enhanced DES accelerator, three 8-bit timers, 3V and 5V supply voltage ranges, high-speed serial data support, etc.
The ST23ZL18 is a serial access microcontroller specifically designed for secure smartcard applications. It utilizes an enhanced STMicroelectronics 8/16-bit CPU core with 16 Mbytes of linear addressing space and is manufactured using highly reliable CMOS EEPROM technology.
Key features include an integrated NESCRYPT crypto-processor for public key cryptography, a hardware security-enhanced DES accelerator, and an ISO 7816-3 compliant asynchronous receiver transmitter (IART). The device supports 3V and 5V supply voltages with a CPU clock frequency up to 29 MHz.
| CPU Core Type | Enhanced 8/16-bit ST23 CPU core |
|---|---|
| Linear Addressable Memory | 16 Mbytes |
| User ROM Size | 300 Kbytes |
| User RAM Size | 6 Kbytes |
| User EEPROM Size | 18 Kbytes |
| CPU Clock Frequency | up to 29 MHz |
| Supply Voltage Ranges | 3V and 5 V |
| External Clock Frequency | up to 10 MHz |
| Data Retention | 30-year |
Major applications include banking, ID cards, and pay TV applications.
Yes, it features contact assignment compatible with ISO/IEC 7816-3 standards.
The EEPROM has a typical endurance of 500,000 Erase/Write cycles at 25° C.