ARM9 MCU Family Boosts Embedded Flash and Saves Part Count in Connected Applications
STMicroelectronics has increased the on-chip Flash capacity of its STR91xFA ARM966E-S based MCU family by introducing 1.1 Mbyte and 2.1 Mbyte variants, delivering higher memory density than many other ARM9, or ARM7-TDMI, based standard MCU currently available. The devices are pin- and function compatible with existing 288 Kbyte and 544 Kbyte versions in LQFP-80, LQFP-128 and BGA-144 packages, allowing engineers to scale designs easily without incurring expensive changes to their circuit boards. Combining the ARM966E-S CPU core with Ethernet connectivity and large memory capacity including 96 Kbytes of SRAM, the STR91xFA series now further extends the performance of networked embeddable systems such as web servers, printer controllers and other applications that require large amounts of code or data storage. These applications also include Point-of-Sale terminals and peripherals, factory-automation equipment, serial-protocol gateways, security and surveillance equipment and building-automation systems.
The 1.1 Mbyte STR91xFAx46 and 2.1 Mbyte STR91xFAx47 enable engineers to build more complex embedded functionality using on-chip memory, thereby adding security against piracy, saving board space as well as bill-of-materials costs.
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