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參數(shù)資料
| 型號(hào)： | RCM2228R |
| 英文描述： | LCD Displays |
| 中文描述： | LCD顯示器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大小： | 80K |
| 代理商： | RCM2228R |
RCM2228R-A / B
Liquid Crystal Displays
z
Terminal function
4/7
V
DD
V
SS
DB4
～
DB7
RS
E
R / W
V
0
Symbol
Input
Input
Input / Output
Input
Input
Input
Input
I / O Terminal
Function
V
DD
=
4.75
～
5.25V
V
SS
=
0V
LCD driving voltage input terminal V
DD
≥
V
0
≥
V
SS
Data bus four-state bi-directional
Register selected signal
L: Instruction register (at write)
L: Busy flag / address counter (at read)
H: Data register (at write & read)
Read / Write select signal L: Write H : Read
Data Read / Write enable signal
z
Timing chart
Writing
t
AW6
t
AH6
t
EWH
t
EWL
t
r
t
f
t
DS6
t
DH6
t
ACC6
t
OH6
RS
R / W
CSB
E
D0 to D7
(Write)
D0 to D7
(Read)
t
CYC6
Fig.6 interface (Write Operation)
Item
Terminal
Min.
Max.
Unit
Address hold time
Address set up time
System cycle time
Data setup time
Data hold time
Access time
Output disable time
“E” rise / fall time
“E” pulse width H level
“E” pulse width L level
In designing, please set the timing with sufficient margin
RS
RS
RS
D0 to D7
D0 to D7
D0 to D7
D0 to D7
E
E
E
Symbol
t
AH6
t
AW6
t
CYC6
t
DS6
t
DH6
t
ACC6
t
OH6
t
r
, t
f
t
EWH
t
EWL
ns
ns
ns
ns
ns
ns
ns
ns
ns
400
20
20
20
150
80
20
150
120
30
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