The ST31 secure microcontroller family is the platform for highly-secure applications including banking, identification, pay TV, and transport.
With the ARM® SecurCore® SC000 processor and an architecture optimized for contactless performances, the ST31 offers a broad portfolio including MIFARE Plus® and MIFARE® DESFire® libraries, multiple interfaces, and certified cryptographic libraries.
The platform addresses the highest security certifications including Common Criteria up to EAL6+, EMVCo, and 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