Digilent DIO5 - Manual (Page 6)

DIO5 Reference Manual Digilent, Inc.
www.digilentinc.com Page 6
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
LCD Read Cycle
tsu
th
th
tw
tr tf
tD tDH
tc
R/W
RS
E
DB0-DB7
LCD Write Cycle
tsu
th
th
tw
tr
tf
tsu1 th1
tc
R/W
RS
E
DB0-DB7
Table 5. LCD Bus Timings
Parameter Symbol Min Max Unit Test Pin
Enable cycle time tc 500 ns E
Enable High pulse width tw 220 ns E
Enable rise/fall time tr, tf 25 ns E
RS, R/W setup time tsu 40 ns RS, R/W
RS, R/W hold time th 10 ns RS, R/W
Read data output delay tD 60 120 ns DB0-DB7
Read data hold time tDH 20 ns DB0-DB7
Write data setup time tsu1 40 ns DB0-DB7
Write data hold time th1 10 ns DB0-DB7
Wait for 20ms
Power On
Function Set
Wait for 37us
Display Control Set
Wait for 37us
Display Clear
Wait for 1.52ms
OK for operations
LCD startup sequence