ST31安全微控制器系列是面向高安全度应用（例如银行业、识别、付费电视和交通）的平台。
ST31采用ARM SecurCore® SC000 处理器和针对非接触式性能进行了优化的架构，包含大量产品，具有MIFARE Plus®和MIFARE® DESFire®库、多个接口和认证密码库。
该平台致力于达到最高的安全认证，包括高达EAL6+级通用标准、EMVCo和CUP。
- ST31P450 ST31 Dual interface, Flash secure microcontroller with enhanced security
- MR31ZD40 ST31 Dual Interface Secure Microcontroller, Nescrypt cryptoprocessor and MIFARE™
- ST31P320 ST31 Dual interface, Flash secure microcontroller with enhanced security
- ST31G480 ST31 Dual Interface, Flash Secure Microcontroller
- ST31G256 ST31 Dual Interface, Flash Secure Microcontroller
- ST31H256 ST31 Contact, Flash Secure Microcontroller
- SC31Z052 ST31 Contact Secure Microcontroller
- SR31ZD16 ST31 Dual Interface Secure Microcontroller
- SR31ZD40 ST31 Dual Interface Secure Microcontroller
- ST31H320 ST31 Contact, Flash Secure Microcontroller
- SR31ZD22 ST31 Dual Interface Secure Microcontroller
- ST31G384 ST31 Dual Interface, Flash Secure Microcontroller
- SR31ZD38 ST31 Dual Interface Secure Microcontroller
- ST31G320 ST31 Dual Interface, Flash Secure Microcontroller
- MR31ZD16 ST31 Dual Interface Secure Microcontroller with MIFARE®
- MR31ZD22 ST31 Dual Interface Secure Microcontroller with MIFARE®
- MR31ZD38 ST31 Dual Interface Secure Microcontroller, Nescrypt cryptoprocessor and MIFARE®
- SR31Z052 ST31 Dual Interface Secure Microcontroller
- MR31Z052 ST31 Dual Interface Secure Microcontroller with MIFARE®
- ST31H128 ST31 Contact, Flash Secure Microcontroller
- SC31ZD16 ST31 Contact Secure Microcontroller
- ST31H192 ST31 Contact, Flash Secure Microcontroller
- SC31ZD22 ST31 Contact Secure Microcontroller
- SC31ZD38 ST31 Contact Secure Microcontroller
