The 8051 Microcontroller and Embedded

Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

LCD HANEL

INTERFACINGSending Codes and Data to LCDs w/ Busy

Flag(cont’)

LCD Timing for ReadE R/W RS

Data

tAS

tAH

tD

t= Data output delay timeD t= Setup time prior to E AS(going high) for both RS and R/W = 140 ns (minimum)

t= Hold time after E has AHcome down for both RS and R/W = 10 ns (minimum)

D0 – D7 Note : Read requires an L-to-H pulse for the E pin