80C51 1Header

80C51 Microcontrollers

Tekmos has developed an 80C51 core that can be used to replace many variations of the 80C51 microcontroller. Some of the 80C51's that we support are the NXP S87C751/S83C751, the NXP 89C668, and the original Intel 80C32. Our 80C51 can also be used as a core in the customer's system on chip.

The Tekmos 80C51 core has been carefully designed to duplicate the original 80C51 on a clock for clock basis. This guarantees complete compatibility with existing code. Even timing loops will work perfectly.

Below is a list of 80C51 microcontroller variants that are available immediately. Consult the Atmel Cross ReferenceIntel Cross Reference or the NXP Cross Reference to locate the equivalent Tekmos device. If you need a version not listed here please: Contact Us.

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Part Number Description Datasheet
TK80C51FA TK80C51FA Microcontroller pdf TK80C51FA (310 KB)
TK89C668 TK89C668 Microcontroller, 64K Flash, 8K RAM pdf TK89C668 (361 KB)
TK87C749   TK87C749 Microcontroller  
TK87C750   TK87C750 Microcontroller  
TK87C751 TK87C751 Microcontroller, 64K ROM, TWI pdf TK87C751 (369 KB)
TK87C752   TK87C752 Microcontroller, 64K Flash pdf TK87C752 (130 KB)  
TK87C451 TK87C451 Microcontroller  
TK83C751 TK83C751 80C51 Microprocessor, 2K ROM, TWI pdf TK83C751 (86 KB)
TK80H51 TK80H51 250ºC Microcontroller pdf TK80H51  (1.05 MB)