2.1 Principal features 0 MHz to 40 MHz operating frequency in 12× mode, 20 MHz in 6× mode 8 kB of on-chip flash user code memory 256 B of RAM Enhanced UART Three 16-bit ti.

The P89V52X2 is an 80C51 microcontroller with 8 kB flash, 256 B of data RAM, and 192 B of data EEPROM. This device is designed to be a drop in and software compatible replacement for the P87C52, P87C52X2, P89C52, and P89C52X2 devices. 2. Features 2.1.

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