General description
The PCA85162 is a peripheral device which interfaces to almost any Liquid Crystal Display (LCD)1
with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 32 segments. It can be easily cascaded for larger LCD applications. The PCA85162 is compatible with most microcontrollers and communicates via the two-line bidirectional I2C-bus. Communication overheads are minimized by a display RAM with auto-incremented addressing, by hardware subaddressing, and by display memory switching (static and duplex drive modes).
FEATUREs and benefits
AEC-Q100 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 generationwith voltage-follower buffers
32 segment drives:
Up to sixteen 7-segment alphanumeric characters
Up to eight 14-segment alphanumeric characters
Any graphics of up to 128 elements
32 x 4-bit RAM for display data storage
Display memory bank switching instatic and duplex drive modes
Versatile blinking modes
Independent supplies possible for LCD and logic voltages
Wide power supply range: from 1.8 V to 5.5 V
Wide logic LCD supply range:
From 2.5 V for low-threshold LCDs
Up to 8.0 V for guest-host LCDs and high-threshold twisted nematic LCDs
Low power consumption
Extended temperature range up to 95oC
400 kHz I2C-bus interface
No external components required
Manufactured insilicon gate CMOS process