Winbond W78E51C Data Sheet Manual
Datasheet
W78E51C is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption. The instruction set for the W78E51C is fully compatible with the standard 8051. The W78E51C contains many enhanced functions, such as new defined peripheral, reduced EMI emission, more flexible lock and MOVC inhibit, higher security and faster clock speed.