Rainbow Electronics HD44780 - Manual (Page 57)

HD44780U
57
Load Circuits
Data Bus DB0 to DB7
For V = 4.5 to 5.5 V
CC
Test
point
90 pF 11 k
Ω
V = 5 V
CC
3.9 k
Ω
IS2074
diodes H
For V = 2.7 to 4.5 V
CC
Test
point
50 pF
External Driver Control Signals: CL1, CL2, D, M
Test
point
30 pF