BU9794KV Datasheet, PDF (11/23 Pages) Rohm – For 200 Segment type LCD LCD Segment Driver

BU9799KV
200Segment (50SEG×4COM) Driver
● Feature (BU9799KV)
1) LCD driving port： 4 Common output, 50 Segment output
2) Integrated RAM for display data (DDRAM) ： 50 × 4bit (Max 200 Segment)
3) 2wire serial interface (SCL,SDA)
4) Integrated Oscillation circuit
5) Integrated Power supply circuit for LCD driving
1/2 ,1/3 Bias 1/4 Duty
Integrated Buffer AMP
6) No external components
7) Low power consumption design
8) Support standby mode （Controlled by INHb terminal or command）
9) Integrated Power-on Reset circuit
10) Integrated Electrical volume register (EVR) function
11) Support Blink function
12) Operation power supply: 2.5～5.5V
13) Power supply for LCD driving: 2.5～5.5V
● Uses (BU9799KV)
Telephone, FAX, Portable equipments （POS, ECR, PDA etc.）,
DSC, DVC, Car audio, Home electrical appliance, Meter equipment etc.
● Absolute Maximum Ratings （Ta=25degree, VSS=0V） (BU9799KV)
Parameter
Symbol
Limits
Unit
Remarks
Power Supply Voltage1
VDD
-0.5 ～ +7.0
V
Power supply
Power Supply Voltage2
VLCD
-0.5 ～ +7.0
V
LCD drive voltage
Allowable loss
Pd
0.75
W
When use more than Ta=25C, subtract
7.5mW per degree.
Input voltage range
VIN
-0.5 ～ VDD+0.5
V
Operational temperature
range
Topr
-40 ～ +85
degree
Storage
range
temperature
Tstg
-55 ～ +125
degree
*This product is not designed against radioactive ray.
● Recommend operating conditions (Ta=25degree, VSS=0V) (BU9799KV)
Parameter
Symbol MIN TYP MAX Unit
Remarks
Power Supply Voltage1
VDD
2.5
-
5.5
V
Power supply
Power Supply Voltage2
VLCD
2.5
-
5.5
V
LCD drive voltage
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