20 characters x 2 lines COG module - Rohm
Description
RCM2234R-A / B
Liquid Crystal Displays
20 characters × 2 lines COG module
RCM2234R-A / B
The RCM2234R-A / B is a reflective TN type liquid crystal module with a built-in controller / driver LSI and a display capacity of 20 characters × 2 lines.
zApplications Printers, Copiers, Facsimiles, etc
www.
DataSheet4U.
com
zFeatures (1) 5×7 dot character matrix with cursor.
(2) Interfaces with 4-bit, 8-bit MPUs.
(3) Displays up to 240 characters and special symbols.
(4) Custom character patterns are displayed with the character RAM.
(5) Abundant instruction set including clear display, cursor on/off, and character blinking.
(6) Compact and lightweight for easy assembly to the host instrument.
(7) Operable on single 5V power supply.
(8) Low power consumption.
zExternal dimensions (Unit : mm) (Viewing direction : 6 : 00)
±5°
6.
0MAX.
(0.
5)
6.
0MAX.
0.
7±0.
7
0.
7±0.
7
0.
7±0.
7
0.
7±0.
7
1.
0MAX.
81.
0±0.
3
10.
6±0.
5
(PITCH1.
8×14)25.
2±0.
3
1.
5MAX.
8.
0±0.
3
0.
3MAX.
24.
9±0.
3
No.
15
No.
1
10.
15MIN.
23.
15MAX.
13.
15MIN.
10.
0MAX.
0.
7±0.
7
Over-coating resin
12.
5±0.
3
8.
7±0.
7
(0.
3)
26.
15MAX.
28.
3±0.
3
(20.
3)
(11.
5)
26.
3MIN.
g win n Vie ectio ) dir :00 (6
0.
7±0.
7
2.
0MAX.
3.
75±0.
3
(73.
5)
79.
0MIN.
0.
7±0.
7
2.
7±0.
3
3.
2 0.
05
0.
5
1.
1±0.
1 1.
1±0.
1
0.
65
0.
6
0.
4
5.
55 0.
05
Dot detail
4.
0MAX.
±5°
1/8
RCM2234R-A / B
Liquid Crystal Displays
zBlock diagram
VR
V V V R R E D D G S L D S / tB N Bo S C D D W 0 7 D
I
SEG1 to 100
COM 1 to 8
20characters×2lines
COM 9 to 16
Fig.
1
www.
DataSheet4U.
com
Note 1.
(VLCDI-V5)V is applied to LCD as driving voltage.
Optimal driving voltage changes by viewing angle or temperature, therefore adjusting V5 voltage in the condition that LCD is mounted on board is necessary.
2.
Considering variation of power voltage and optimal driving voltage, V5 voltage should be adjustable.
3.
VR : 10kΩ to 20kΩ (variable)
zPin assignments
Pin No.
1 2 3 4 5 symbol VSS VLCDI VDD RS R/W Pin No.
9 10 11 12 13 symbol DB2 DB3 DB4 DB5 DB6
6
E
14
DB7
7 8
DB0...
Similar Datasheet
