VK2C21 is a RAM Mapping LCD Driver，It can support LCD screens with a maximum of 80

pattern(20SEGx4COM) or a maximum of 128 pattern(16SEGx8COM) .The device communicates

with host microcontrollers via a two-line bidirectional I2C bus,it is used to configure display

parameters and transfer display data,, and can also enter the standby mode through System Set

Command .With the characteristics of high anti-interference and low power consumption, it is suitable

for water electrical meters and industrial control instruments.