BU97530KVT数据手册集成电路（IC）的显示驱动器规格书PDF

描述 Description

BU97530KVT是1/5、1/4、1/3占空比的Static通用LCD驱动器，最多可显示445段的LCD，适用于消费电子和电池驱动设备的LCD显示。

最多可控制9个通用／PWM输出，通过丰富的频率设定功能，无需频闪即可实现LED背光和LED按钮的照明。还内置最多30键的键盘扫描功能，可实现PCB上的配线削减和MCU的尺寸缩减和成本削减。内置有EVR功能，可进行LCD对比度的调节，还支持TTL电平输入，因此能直接连接各种电源电压的MCU。

特性 Features

• 1/5, 1/4, 1/3duty or Static setting selectable
1/5duty driving: Max 445 segments
1/4duty driving: Max 360 segments
1/3duty driving: Max 270 segments
Static driving: Max 90 segments
• 1/3 or 1/2 bias setting selectable
• Support wide range of operation voltage from 2.7V to 6.0V,
which can support TNLCD and VA LCD display.
• Integrated LCD voltage driving circuit
• Integrated oscillation circuit for LCD frame frequency
• Line or Frame inversion driving selectable
• Integrated 9ch general purpose outputs/ PWM outputs (SEG selectable)
• Support 256 step PWM function to realize backlight/ button LED illumination
• Support LCD frame frequency from 49Hz to 391Hz, total 16setting
• Support PWM frequency from 146Hz to 2.34KHz,
total 16setting
• Support 3 wire serial interface + KEYOUT
• Support TTL level input to connect 3.3V MCU directly
• Support Max 30 key input detection (SEG selectable)
• Integrated EVR function to adjust LCD contrast
• Integrated voltage detected type power on reset circuit
• No external components required
• Low power consumption design