Foot 3: VL for LCD contrast the adjustment, and then when the power is the weakest contrast, grounded contrast the highest, and the contrast .Through high can produce the "ghost", when used, can pass a 10 K adjust potentiometer contrast.
Foot 4: RS for registers choice, high electric usually choose data registers, low electric usually choose instruction register.
Foot 5: R/W signal lines for reading and writing, high electric usually are read operation, low electricity at ordinary times for write operation. When the RS and the R/W common For low electricity can be written instructions at ordinary times, or displays address, when RS for low level R/W high power for at ordinary times can read busy signal, and when RS for high level R/W for low electricity data can be written at ordinary times.
Foot 6: E end to make can end, when E is driven by high level jump into low electricity at ordinary times, LCD module executive order.
Foot 7 to 14 : D0 ~ D7 for eight two- - way data cables.
Foot 15: back light positive.
Foot 16: back light negative.
Features: LCD display module with blue or yellow backlight.