A New Revision to the TK89C668

Tekmos is pleased to announce a revision to the popular TK89C668 microcontroller. Based on the 8051 architecture, this 5-volt microcontroller offers 64K of program storage, an I2C controller, and 8K of XRAM.

The TK89C668 was originally made at Plessey Semiconductor. Plessey made the decision to discontinue foundry services, and so the part was switched to the 0.35u fabrication line at the X-Fab Dresden facility. Plessey had been using a similar X-Fab process in their factory, resulting in minimal process differences between the two foundries.

Since we were forced to retool at X-Fab, we took advantage of the situation, and corrected all known errata on the part. We also improved the RAM design by replacing a traditional RAM with one made out of latches that has a superior voltage and temperature operating ranges.

The new part has passed our qualification, and we are ramping up production. For further information, contact .

The TK89C668 joins our TK80C186EB, TK87C751, and TK68HC711D3 families that have already been requalified at X-Fab. Our TK80C51 is currently being requalified, with an expected release this summer. That qualification will also result in the introduction of TK87C51 programmable versions of the 80C51.

Date

2017-03-27