P89VS1RD2

P89VS1RD2 is 8-bit 80C51 microcontroller is a derivative product. It is fully retained in the 80C51 instruction set and the hardware configuration of a large community outside the framework, P89VS1RD2 made a lot of strengthening and expansion. It will be the original data and program memory on the external 16-bit addressing mechanism of the application, the chip extended to 1024 bytes of RAM, on-chip Flash EPROM extended to 64kB, to meet the system using C programming language on the large on-chip memory capacity needs. P89V51 RD2 typical feature is its X2 mode option. Using this feature, designers can make application to the conventional 80C51 clock rate (per machine cycle consists of 12 clocks) or the X2 mode (6 for each machine cycle consists of the clock) to run the clock frequency, select the X2 in the same way clock frequency of 2 times the speed of access. P89VS1RD2 clock frequency can be reduced by half and maintain the characteristics of the same.