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Integrated PSoC, nvSRAM secure updated data logging

Posted: 25 Sep 2008 ?? ?Print Version ?Bookmark and Share

Keywords:PSoC? nvSRAM? MCU?

Cypress Semiconductor Corp. has claimed the industry's first device to integrate a non-volatile SRAM (nvSRAM) and a programmable SoC in a single package. Based on the company's flagship PSoC architecture, the PSoC NV family integrates configurable analog and digital circuits, controlled by an on-chip MCU, giving enhanced design revision capability and component count savings. The secure-store data logging devices target the computing, networking, telecommunications, automotive and industrial markets.

The PSoC NV devices can be used in applications requiring continuous data logging from sensors, analog and digital inputs. The devices have a powerful analog front-end that can simultaneously sample up to eight inputs from sensors and analog sources and store the data in the embedded nvSRAM. Regular operation accesses are directed to a SRAM array and are automatically secured into a nonvolatile quantum trap cell in case of power failure. This data can be recalled on power up.

"The data logging capabilities can be maximized in field diagnostics and failure mode analysis, helping customers identify problems quickly and reducing system downtime," Cypress said. The devices have a 20-year data retention capability and can perform a host of applications such as voltage monitoring, voltage sequencing, thermal management, on-board diagnostics, power management, fan control, industrial data logging, and sequence-of-events monitoring.

The 3.3V PSoC NV devices feature a 64Kbyte, 128Kbyte or 256Kbyte nvSRAM with a throughput of up to 100Kbits/s, a M8C-based core with speeds up to 24MHz, 32Kbyte flash and 2Kbyte SRAM. The 12 analog blocks can be programmed to create an ADC, DAC and comparator, and the 16 digital blocks can be designed to create timers, counters, pulse-width modulator, UART and SPI. The eight analog channels deliver a sampling rate of 820 samples per second. Other features include programmable GPIOs, an I2C interface, watchdog and sleep timers, and an on-chip precision voltage reference. The device operates over the industrial temperature range from40C to +85C.

Cypress also introduced two kits to support the PSoC NV family. The demonstration kit showcases the fail-safe data logging capabilities of the PSoC NV family in an event monitoring and diagnostics application. The PSoC NV evaluation kit provides an easy-to-use platform for developers to experiment with the mixed-signal and data-logging capabilities of the PSoC NV devices. The kit has a fan module for temperature sensing and fan control applications, PSoC Designer software and sample projects.

-Gina Roos

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