NXP Semiconductors PCx8537 LCD驱动器
NXPPCx8537 LCD驱动器是功能丰富的液晶显示器（LCD）驱动器，特别适用于复用率达1:8的高对比度垂直对齐（VA）LCD。它们能为任何包含多达8个背板、46个分段和352个元件的多路复用LCD生成驱动信号。PCx8537含有带内部电容器的内部电荷泵，可实现片上生成LCD驱动电压。为确保整个温度范围得到优质稳定对比度，PCx8537可提供对LCD电源电压的可编程温度补偿。PCx8537可轻松连接微控制器，方式是通过两线I2C总线（PCx8537AH）或三线双向SPI总线（PCx8537BH）。
特性
- AEC Q100 compliant for automotive applications (PCA8537 versions only)
- Low-power single-chip LCD controller and driver
- 352 elements allowing to drive:
- up to 44 7-segment alphanumeric characters
- up to 22 14-segment alphanumeric characters
- Selectable backplane drive configuration: static, 2, 4, 6, or 8 backplane multiplexing
- Software programmable internal charge pump for on-chip LCD voltage generation up to 9V with internal capacitors
- 400kHz I2C-bus interface (PCx8537AH)
- 5MHz SPI-bus interface (PCx8537BH)
- Programmable temperature compensation of VLCD in four regions
- Selectable display bias configuration
- Wide range for digital power supply: from 1.8V to 5.5V
- Wide LCD supply range: from 2.5V for low threshold LCDs and up to 9.0V for high threshold twisted nematic LCDs
- Display memory bank switching in static, duplex, and quadruplex drive modes
- 352-bit RAM for display data storage
- Programmable frame frequency in the range of 60Hz to 300Hz in steps of 10Hz; factory calibrated
- Integrated temperature sensor with temperature readout
- On chip calibration of internal oscillator frequency and VLCD
- Manufactured in silicon gate CMOS process