20*2 Charactor LCD Module LCM
Specifications
1.wide variety of working temperatures ranged from -40 to 802.high light
3.low-power dissipation
1. 2 lines of 20 characters of 5x8 (dots)
2. Low power consumption
3. High contrast ratio and wide viewing angle
4. Compatible with LCD 20x2 type
5. Controller is compatible with HD44780
6. 4-bits or 8-bit MPU interface
7. High speed MPU interface:2 MHz(VDD=5V)
8. 80x8 bit Display RAM(80 characters max.)
1. Absolute maximum ratings
Symbol |
Parameter |
Min |
Typ |
Max |
Unit |
VDD |
Supply voltage for Logic |
4.5 |
5.0 |
5.5 |
V |
Topr |
Operating temperature |
-20 |
25 |
50 |
°C |
Tstg |
Storage temperature |
-30 |
|
70 |
°C |
Vbt |
Brightness control voltage |
3 |
|
5 |
V |
Tsolder |
Soldering Temperature |
260°C for 5 seconds |
|
||
Pd |
Module power consumption @Vbt=3V (Note 1) |
50 |
80 |
130 |
mW |
Item |
Operating |
Storage |
||
Min. |
Max. |
Min. |
Max. |
|
Ambient Temperature |
-20oC |
50oC |
-30oC |
70oC |
Humidity |
45oC 85%RH |
45oC 85%RH |
||
Corrosive gas |
Not Acceptable |
Not Acceptable |
||
Note 1. Power consumption was measured with Vbt=3V,VDD=5V and 3 test patterns (all pixels off, random texts, all pixels on).
3 Electrical Characteristics
(Ta= -20 to 50°C)
Item |
Symbol |
Condition |
Min |
Typ |
Max |
Unit |
Power supply voltage |
VDD |
|
4.5 |
|
5.5 |
V |
Brightness control voltage |
VBT |
|
3 |
|
5 |
V |
Power supply current |
Icc |
VDD=5V, (Logical only ) |
|
0.35 |
0.6 |
mA |
High level input voltage |
Vih |
|
0.7VDD |
|
VDD |
V |
Low level input voltage |
Vil |
|
-0.3 |
|
0.55 |
V |
Leakage current |
Il |
|
-1 |
|
1 |
uA |
3.2 AC Electrical Characteristics
(Ta= -20 to 50°C)
Write operation
Item |
Symbol |
Min |
Typ |
Max |
Unit |
Enable Cycle Time |
Tcyc |
500 |
|
|
ns |
Enable Pulse Width (High level) |
Pweh |
230 |
|
|
ns |
Enable Rise/ Fall Time |
tEf, tEr |
|
|
20 |
ns |
Address Set-up Time |
tAS |
40 |
|
|
ns |
Address Hold Time |
tAH |
10 |
|
|
ns |
Data Set-up Time |
tDSW |
80 |
|
|
ns |
Data Hold Time |
tH |
10 |
|
|
ns |
Read operation
Item |
Symbol |
Min |
Typ |
Max |
Unit |
Enable Cycle Time |
Tcyc |
500 |
|
|
ns |
Enable Pulse Width (High level) |
Pweh |
230 |
|
|
ns |
Enable Rise/ Fall Time |
tEf, tEr |
|
|
20 |
ns |
Address Set-up Time |
tAS |
40 |
|
|
ns |
Address Hold Time |
tAH |
10 |
|
|
ns |
Data Delay Time |
tDDR |
|
|
160 |
ns |
Data Hold Time |
tH |
5 |
|
|
ns |
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