BU97981GU
低Duty LCD節段驅動器
BU97981GU
低Duty LCD節段驅動器
ROHM的多機能節段驅動器最適合使用在大約100節段到200節段的液晶節段的驅動。機種內建標示用RAM、為可減輕微控制器負擔、亦可大幅減少功耗電流及周邊零件數量的節能設計。並備有透過LED驅動器、PWM調光功能、GPO等的付加功能也完備、可在單一Rank 上進行面板設計。
Product Detail
規格:
Grade
Consumer
Segment Element
196
Duty
1/4, 1/3, Static
Bias
1/3
Elements of MUX 1:1
49
Elements of MUX 1:3
147
Elements of MUX 1:4
196
Interface [line serial]
3wire
Interface Voltage (Min.)[V]
1.8
Interface Voltage (Max.)[V]
3.6
Power Supply for LCD (Min.) [V]
3.3
Power Supply for LCD (Max.) [V]
5.5
Max GPO [port]
31
LED Driver [port]
3
LCD Driving Waveform
Line/Frame
Operating Temperature (Min.)[°C]
-30
Operating Temperature (Max.)[°C]
75
Package Size [mm]
5.0x5.0 (t=1.2)
功能:
- 1/4, 1/3duty or Static setting selectable
1/4duty driving: Max 196 segments
1/3duty driving: Max 147 segments
Static driving: Max 49 segments - 1/3 bias setting
- Power supply for Interface: 1.8V to 3.6V
- Power supply for LCD: 3.3V to 5.5V
- Integrated LCD voltage driving circuit
- Integrated oscillation circuit for LCD frame frequency
- Line or Frame inversion driving selectable
- Integrated 31ch general purpose outputs (SEG selectable)
- Integrated 3ch LED driver able to support 4096 step PWM illumination
- Support individual blink function with dedicated blink RAM integrated
- Support 3 wire serial interface
- Support INHb terminal to control Display ON/OFF
- Integrated voltage detected type power on reset circuit
- No external components required
- Low power consumption design
- Small BGA package
