STMicroelectronics has released a robust low-power processor chip dedicated to managing SIM data for machine-to-machine (M2M) cellular communications, a growing market that could account for over 200 million mobile connections by 2013, according to an August 2009 report by Beecham Research.
The ST32-M IC family combines the advantages of a non-proprietary processor architecture and high-density embedded Flash memory, enabling machines to connect to cellular networks and to authenticate themselves and communicate automatically. M2M applications include automatic utility-meter reading; retail systems, such as replenishment monitoring for vending machines; security equipment; and asset-management systems.
To communicate with the cellular network, the ST32-M has the same capabilities and security features as the company’s existing ST32 smartcard processor, which is used in cellphone SIM cards worldwide. The ST32-M is designed explicitly for M2M applications, with a wider temperature range (-40°C to 105°C) allowing M2M equipment to function in harsh environments. The chip also supports many more data-writing cycles than the standard SIM controller, enabling continuous operation over an extended lifetime. It will also store data reliably for more than 10 years.
Like ST’s ST32 family, the ST32-M uses the ARM Cortex-M3 embedded processor core. The ST32-M family is available in four variants having Flash density of 256 KBytes, 320 KBytes, 416 KBytes or 512 KBytes. The integrated memory supports total data cycling of 500 000 cycles per page or 50 million cycles per sector.
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