San Jose, CA Atmel® Corporation has announced the addition of 512KBytes of dual-bank flash memory extensions its AT91SAM7S, SAM7X and SAM7XC microcontrollers. Doubling the Flash memory density from 256K bytes to 512K bytes gives software engineers the capacity to integrate new features for their next-generation products and true in-application programming at an additional cost of less than 20%.
Increasingly complex communication protocols, data throughput and streaming content used in networked embedded systems require ever-larger amounts of data buffers and higher levels of security. To meet this need, Atmel has doubled the density of the zero wait-state, 32-bit wide SRAM on its AT91SAM7X512 and SAM7XC512 from 64 to 128 Kbytes.
The Flash on the AT91SAM7S512, SAM7X512 and SAM7XC512 is arranged in two separate banks that allow the device to be programmed simultaneously with application execution. A dual-bank implementation protects the application against potentially catastrophic failure resulting from unexpected power outages during firmware updates.
The new devices have 11 to 13 dedicated peripheral DMA channels (PDC) that increase on-chip bandwidth from a maximum of 4 Mbps on conventional ARM7 MCUs to 25 Mbps or more. By off-loading peripheral-to-memory transfers from the CPU, the PDC actually increases the number of CPU operations available to the application.
Another derivative, Atmel's SAM7XC, provides “top secret” encryption capability by integrating a hardware crypto engine that can be configured to do 128-, 192- or 256-bit (“top secret”) AES or triple-DES encryption. Pricing for the 512K Flash variants of the SAM7S, SAM7X and SAM7XC devices starts at $7 in quantities of 10,000 units. The AT91SAM7S512 is available in 64-pin LQFP and 64-lead QFN green packages. The AT91SAM7X512 and AT91SAM7XC512 are available in 100-pin LQFP and 100-ball BGA green packages.
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