PCA8551 is an ultra low-power LCD segment driver with 4 backplane- and 36segment-driver outputs, with either an I2C- (PCA8551A) or an SPI-bus (PCA8551B)interface. It comprises an internal oscillator, bias generation, instruction decoding, anddisplay controller.

• AEC-Q100 grade 2 compliant for automotive applications
• Single chip LCD controller and driver
• Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
• Selectable display bias configuration: static, 1?2, or 1?3
• Internal LCD bias generation with buffers
• 36 segment drives:
  • Up to 18 7-segment numeric characters
  • Up to 9 14-segment alphanumeric characters
  • Any graphics of up to 144 segments/elements
• Auto-incrementing display data and instruction loading
• Versatile blinking modes
• Independent supplies of VLCD and VDD
• Power supply ranges:
  • 1.8 V to 5.5 V for VLCD
  • 1.8 V to 5.5 V for VDD
• Ultra low-power consumption
• 400 kHz I2C-bus interface (PCA8551A)
• 5 MHz SPI-bus interface (PCA8551B)
• Internally generated or externally supplied clock signal

• Displays integrated
  • in a car instrument cluster
  • in a control indicator
• Battery operated applications
• Healthcare devices

• BLF578XRS - 功率LDMOS晶体管
• PUMD13 - NPN/PNP配电阻晶体管；R1 = 4.7 kΩ，R2 = 47 kΩ
• BZX84J-B2V7 - 单倍齐纳二极管
• HEF4050BT - 六位元反相缓冲器
• BCV71; BCV72 - NPN通用晶体管
• 74AHCT1G86GW - 2输入异或门
• NZH series - 单倍齐纳二极管
• PCA9548ABS - 带有复位的8通道I2C总线开关
• TEF6617T - 低中频、免校准模拟汽车无线电调谐器IC
• PTVS17VS1UR - 400 W瞬态电压抑制器