Description:
16×2 LCD modules:
long life span, low power consumption, good quality, competitive price.
White character with blue backlight
1602 the standard 16 feet interface, among them:
1 foot: for to power VSS
2 feet: VDD take 5 V is power
3 feet: V0 for LCD contrast the adjustment, and then when the power is the weakest contrast, grounding the power supply highest contrast, high contrast can produce the “ghost”, when used, can pass a 10 K adjust potentiometer contrast
4 feet: RS for registers choice, high electric usually choose data registers, low electric usually choose instruction register.
5 feet: 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 RW together for low electricity can be written instructions at ordinary times, or displays address, when RS for low level for high electricity can usually RW read busy signals, when RS for high level for the low electricity can usually RW write data.
6 feet: E end to make can end, when E is driven by high level jump into low electricity at ordinary times, LCD module executive order.
7 to 14 feet: D0 ~ D7 for eight two-way data cables.
15 feet: backlighting power positive
16 feet: backlighting power negative
