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。
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ST31P450
ST31 Dual interface, Flash secure microcontroller with enhanced security
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MR31ZD40
ST31 Dual Interface Secure Microcontroller, Nescrypt cryptoprocessor and MIFARE™
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ST31P320
ST31 Dual interface, Flash secure microcontroller with enhanced security
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ST31G480
ST31 Dual Interface, Flash Secure Microcontroller
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ST31G256
ST31 Dual Interface, Flash Secure Microcontroller
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ST31H256
ST31 Contact, Flash Secure Microcontroller
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SC31Z052
ST31 Contact Secure Microcontroller
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SR31ZD16
ST31 Dual Interface Secure Microcontroller
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SR31ZD40
ST31 Dual Interface Secure Microcontroller
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ST31H320
ST31 Contact, Flash Secure Microcontroller
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SR31ZD22
ST31 Dual Interface Secure Microcontroller
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ST31G384
ST31 Dual Interface, Flash Secure Microcontroller
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SR31ZD38
ST31 Dual Interface Secure Microcontroller
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ST31G320
ST31 Dual Interface, Flash Secure Microcontroller
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MR31ZD16
ST31 Dual Interface Secure Microcontroller with MIFARE®
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MR31ZD22
ST31 Dual Interface Secure Microcontroller with MIFARE®
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MR31ZD38
ST31 Dual Interface Secure Microcontroller, Nescrypt cryptoprocessor and MIFARE®
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SR31Z052
ST31 Dual Interface Secure Microcontroller
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MR31Z052
ST31 Dual Interface Secure Microcontroller with MIFARE®
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ST31H128
ST31 Contact, Flash Secure Microcontroller
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SC31ZD16
ST31 Contact Secure Microcontroller
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ST31H192
ST31 Contact, Flash Secure Microcontroller
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SC31ZD22
ST31 Contact Secure Microcontroller
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SC31ZD38
ST31 Contact Secure Microcontroller
