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ST21F288 Secure Microcontroller CPU Card
ST21F288 Secure Microcontroller CPU Card

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The ST21F256 product is a serial access microcontroller specially designed for costeffective secure mobile applications.

Features Hardware features Enhanced 8/16-bit CPU core with 16 Mbytes of linear addressable memory 7 Kbytes of User RAM 256 Kbytes of User Flash memory with OTP area: 10-year data retention 100,000 Erase/Write cycles Page granularity of 128 Bytes Block granularity: 1 Kbyte 128 Bytes of OTP for User Page Erase time 3 ms Block Erase 1 Kbyte in 15 ms Byte programming in 16 μs Flash Erase / Write Protection software programmable on 64 Kbyte Blocks Asynchronous Receiver Transmitter supporting ISO 7816-3 T=0 and T=1 protocols Two 8-bit timers with interrupt capability 1.8V, 3V and 5V supply voltage ranges External clock frequency from 1 up to 7.5 MHz High performance provided by: CPU clock frequency up to 19 MHz External clock multiplier (2x, 3x, and 4x) Current consumption compatible with GSM and ETSI specifications Power-saving Standby state Contact assignment compatible ISO 7816-2 ESD protection greater than 4 kV (HBM) Software features Flash Loader Flash drivers Security features Monitoring of environmental parameters Protection against faults ISO 3309 CRC calculation block Cryptographic performances: Triple DES (with keys loaded): 10.8 μs Single DES (with keys loaded): 3.6 μs True random number generator Unique serial number on each die Hardware DES accelerator Development environment: Software development and firmware generation are supported by a comprehensive set of development tools dedicated to software design and validation: C compiler, simulator and emulator ST21F256 major applications include:
 Mobile communications (GSM, 3G and CDMA)
Java Card™ applications

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