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HD44780 Datasheet(PDF) 53 Page - Hitachi Semiconductor

Part No. HD44780
Description  Dot Matrix Liquid Crystal Display Controller/Driver
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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 53 page
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HD44780U
53
Interface Timing Characteristics with External Driver
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Clock pulse width
High level
t
CWH
800
ns
Figure 27
Low level
t
CWL
800
Clock set-up time
t
CSU
500
Data set-up time
t
SU
300
Data hold time
t
DH
300
M delay time
t
DM
–1000
1000
Clock rise/fall time
t
ct
100
Power Supply Conditions Using Internal Reset Circuit
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Power supply rise time
t
rCC
0.1
10
ms
Figure 28
Power supply off time
t
OFF
1—




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