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Motorola's FLASH MCUs Diminish Need for EEPROMsBy Motorola, Inc.'s Semiconductor Products Sector family of flash microcontrollers (MCUs) has grown with the introduction of the 68HC908GR8 and the 68HC908GR4. The new chips, derivatives of the existing 68HC908GP32, extend the reliability and data retention of the embedded flash memory to typically 100,000 write/erase cycles and 50-year data retention (running at 55 degrees Celsius). As a result, most embedded systems that require non-volatile storage of temporary or changing data no longer need separate electrically erasable read only memory (EEPROM) chips. The four kilobytes of flash memory with the 68HC908GR4, and the eight kilobytes of flash memory with the 68HC908GR8 are well suited for applications such as coin validators, security system control panels, building automation, thermostats, dashboards, and industrial control instrumentation. The new chips help to reduce customers' systems costs with an advanced phased locked loop (PLL) feature that allows a lower cost and lower speed (32 kHz) crystal while still providing high speed operations. Other features of the new chips include an on-chip time-base module that eliminates the need for a real-time clock and auto wakeup circuitry, and a rich instruction set that allows optimum code density with C programming. Price and Availability The 68HC908GR4 and the 68HC908GR8 are available now in 28 PDIP, 32 QFP and 28 SOIC packages. For volumes less than 50,000 pieces, the suggested list price is $2.25 for the 68HC908GR4 and $3.30 for the 68HC908GR8. Link: |
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