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Because of its popularity, a multitude of development tools, tutorials, and premade codes are readily available. This makes the device an excellent entry-level IC for those just getting into the field. The Atmel product contains flash memory that holds its program when the power is off and that can be reprogrammed many times over. This extremely versatile general-purpose controller fits many different task-specific functions. The DIP package is the easiest to work into breadboarding applications.
Remember to add pullup resistors to the databus lines many neglect to do this. A higher clock-rate device can be substituted for a lower-clock device, as the rated clock speed is just the ability, not the requirement, so the same crystal will work. And the industrial temperature tolerance can be used instead of commercial.
Thus, parts with better specs can be substituted for parts with lower specs and will run the same code in the same hardware. Finding these devices is a boon to hobbyists and repair outfits who want an exact replacement or easy soldering. Unfortunately, the new ROHS parts require higher soldering temperatures, so the older parts are still ideal for hand repairs and breadboarding.
In using these devices over the past two decades, I have been happy with the low failure rate, the very long shelf life, and the ease of reprogramming. Read full review Verified purchase: No.
5pcs IC At89c52-24pc At89c52-24pi Dip-40 ATMEL
VDK1 Vi điều khiển AT89C52 - 24PI