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The ST23 contact series offers secure microcontrollers specifically designed for smartcard and secure authentication applications. They are based on ST's enhanced 8/16-bit CPU core and offer a wide range of memory sizes, cryptographic algorithms and interfaces.
As well as DES and AES cryptographic co-processors, the ST23 family comes with a Nescrypt public key co-processor including RSA and ECC algorithms and the optional Neslib certified crypto library.
Products are certified according to EMVCo and Common Criteria EAL5+/EAL6+ levels.
| Part Number | Marketing Status | General Description | Core | Internal ROM Size nom (kB) | EEPROM Size nom (kB) | Internal RAM Size nom (kB) | Communication standards supported | Cryptography | Security Certification | Device Configuration | Software Kernel | Supply Voltage(Vcc) min (V) | Supply Voltage(Vcc) max (V) | Technology |
| SB23Z012 | Active | ST23 Contact Secure MCU with 12 Kbytes EEPROM, enhanced security | ST23 | 140 | 12 | 4 | ISO71816 | Triple DES | EMVCo target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SB23ZD18 | Active | ST23 Contact Secure MCU with 18 Kbytes EEPROM, enhanced security | ST23 | 252 | 18 | 8 | ISO71816 | Triple DES | EMVCo, EAL5+ target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SB23ZE04 | Active | ST23 Contact Secure MCU with 4 Kbytes EEPROM, enhanced security | ST23 | 140 | 4 | 4 | ISO71816 | Triple DES | EMVCo target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SB23ZE08 | Active | ST23 Contact Secure MCU with 8 Kbytes EEPROM, enhanced security | ST23 | 140 | 8 | 4 | ISO71816 | Triple DES | EMVCo target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SC23ZD04 | Active | ST23 Contact Secure MCU with 4Kbytes EEPROM, I2C slave interface, enhanced security and Nescrypt cryptoprocessor | ST23 | 252 | 4 | 8 | ISO71816, I2C slave | Nescrypt;Triple DES | EMVCo, EAL5+ target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SC23ZD08 | Active | ST23 Contact Secure MCU with 8Kbytes EEPROM, I2C slave interface, enhanced security and Nescrypt cryptoprocessor | ST23 | 252 | 8 | 8 | ISO71816, I2C slave | Nescrypt;Triple DES | EMVCo, EAL5+ target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SC23ZD12 | Active | ST23 Contact Secure MCU with 12Kbytes EEPROM, I2C slave interface, enhanced security and Nescrypt cryptoprocessor | ST23 | 252 | 12 | 8 | ISO71816, I2C slave | Nescrypt;Triple DES | EMVCo, EAL5+ target | W/o Kernel SW | - | 1.62 | 5.5 | 90 nm |
| SM23YT66 | Active | USB secure MCU with Mifare Classic library for reader | ST23 | 210 | 66 | 8 | ISO71816, USB2.0, 12 GPIOs, SPI master | DES;Nescrypt | - | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23L160 | Active | ST23 Contact Secure MCU with 160 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor | ST23 | 390 | 160 | 8 | ISO7816 | DES;Nescrypt | EMVCo ,EAL6+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23L48A | Active | ST23 Contact Secure MCU with 48 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor | ST23 | 390 | 48 | 8 | ISO7816 | DES;Nescrypt | EMVCo, EAL6+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23L80A | Active | ST23 Contact Secure MCU with 48 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor | ST23 | 390 | 80 | 8 | ISO7816 | DES;Nescrypt | EMVCo ,EAL6+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YL18 | Active | ST23 Contact Secure MCU with 18 Kbytes EEPROM , enhanced security and Nescrypt cryptoprocessor | ST23 | 196 | 18 | 6 | ISO71816 | DES;Nescrypt | EMVco ,EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 m |
| ST23YL48 | Active | ST23 Contact Secure MCU with 48 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor | ST23 | 396 | 48 | 8 | ISO71816 | DES;Nescrypt | EMVco ,EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YL80 | Active | ST23 Contact Secure MCU with 80 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor (Contact ID/PKI) | ST23 | 396 | 80 | 8 | ISO71816 | DES;Nescrypt | EMVco ,EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YS02 | Active | ST23 Contact Secure MCU with 2 KBytes EEPROM, enhanced security | ST23 | 36 | 2 | 2 | ISO71816 | DES | EMVCo | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YS08 | Active | ST23 Contact Secure MCU with 8 KBytes EEPROM, enhanced security | ST23 | 108 | 8 | 2 | ISO71816 | DES | EMVCo | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YS64 | Active | ST23 Contact Secure MCU with 64 Kbytes EEPROM, enhanced security | ST23 | 396 | 64 | 6 | ISO71816 | DES | EMVCo | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YT34 | Active | ST23 Secure MCU with USB, enhanced security and 34 KBytes EEPROM | ST23 | 110 | 34 | 7 | ISO71816, USB2.0, 3 GPIOs | DES;Nescrypt | EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23YT66 | Active | ST23 Secure MCU with USB and SPI interfaces, enhanced security and 66 KBytes EEPROM | ST23 | 210 | 66 | 8 | ISO71816, USB2.0, 12 GPIOs, SPI master | DES;Nescrypt | EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 0.13 um |
| ST23ZL18 | Active | ST23 Contact Secure MCU with 18 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor | ST23 | 300 | 18 | 8 | ISO71816 | DES;Nescrypt | EMVCo, EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 90 nm |
| ST23ZL48 | Active | ST23 Contact Secure MCU with 48 Kbytes EEPROM, enhanced security and Nescrypt cryptoprocessor (Contact/PKI) | ST23 | 300 | 48 | 8 | ISO71816 | DES;Nescrypt | EMVco ,EAL5+ | W/o Kernel SW | - | 2.7 | 5.5 | 90 nm |
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