PARAMETRIC
ADVANCED

78K0 Core

The 78K0 core is today NEC Electronics' mainstream 8-bit core. Based on this core, the 78K0S core was derived for cost-sensitive applications without the performance needs of the 78K0. Hence, the 78K0S is used mainly for very small devices.

The newest addition to the 78K family is the 16-bit 78K0R core. It is also based on the 78K0 but provides, thanks to its 16-bit-wide databus and 16-bit-wide ALU, real 16-bit performance.

Feature highlights are listed in the table below. Click on an application link to get more product information.

Feature Core 78K0S 78K0 78K0R Architecture Von Neumann, CISC Von Neumann, CISC Von Neumann, CISC Data bus width 8-bit 8-bit 16-bit Address space 64 KB 64 KB 1 MB ALU width 8-bit 8-bit 16-bit Multiplication no core instruction (but by peripheral) 8 x 8 -> 16 8 x 8 -> 16 Number of instructions 48 (reduced from 78K0) 63 71 (adapted from 78K0) Instruction pipeline no no 3 stages Max. memory size 60 KB 128 KB 512 KB Max. clock speed 10 MHz 20 MHz 20 MHz Min. instruction time 200 ns 100 ns 50 ns Max. Dhrystone MIPS 1 2 13 Design target cost efficiency excellent performance 16-bit performance Applications General Purpose LCD Control Motor Control Remote Control For other applications General Purpose LCD Control CAN Interface Motor Control Remote Control For other applications General Purpose Motor Control