CM2915 Datasheet, PDF (3/19 Pages) Ceramate Technical – LCD Driver (19x4) with Key Scan (4x8)

CM2915
LCD Driver (19*4) with Key Scan (4*8)
. AC / DC Characteristics
1 Absolutely max. ratings
ITEM
SYMBOL
Operating Temperature
Top
Storage Temperature
Tsto
Supply Voltage
VDD
Voltage to input terminal
Vin
RATING
-20℃- +70℃
-50℃- +125℃
5.5
Vss-0.3 to Vdd+0.3
UNIT
℃
℃
V
V
2 D.C. Characteristics
Symbol
Item
Condition
min. typ. Max.
unit
Operating voltage VDD
2.4 5 5.5
V
Power consumption I_OPR System clock at 56.875Khz RC
current
oscillator, LCD on, no load, @5V
400 800
uA
Input low voltage for V_IL1
input pin
0
0.3VDD
V
Input high voltage for V_IH1
input pin
0.7VDD
VDD
V
RC oscillator
V_ST
start-up voltage
2.7
V
RC oscillator
V_SU
2.4
V
sustain voltage
DOUT source current I_IROH
VDD＝5V, V_OH=4.5V
6 12
mA
DOUT sink current
I_IROL
VDD＝5V, V_OL=0.5V
6 12
mA
3 A.C. Characteristics
Item
Symbol
System clock
LCD frame frequency
串行控制 CKWB
串行控制 SYNCB
(Reset pulse width of
f_SYS
F_LCD
F_CKWB
t_SYNCB
high state)
Condition
RC oscillator @5v
1/4 duty
＠5V，Clock duty 50%
@5V
min. typ. Max. unit
56.875
KHz
55.5
HZ
500 KHz
100
ns
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:[phone]
Fax:[phone]
Page 3 of 19
Email: [e-mail]
Http: www.ceramate.com.tw
Rev 1.0 Aug.1, 2003