PCF8532

PCF8532 Universal LCD driver for low multiplex rates Rev. 4 — 11 July 2013 Product data sheet 1. General description The PCF8532 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 160 segments. It can easily be cascaded for larger LCD applications. The PCF8532 is compatible with most microcontrollers and communicates via the two-line bidirectional I2C-bus. Communication overheads are minimized by a display RAM with auto-incremental addressing, by hardware subaddressing, and by display memory switching (static and duplex drive modes). Not to be used for new designs. Replacement part is PCF85132U/2DA/1 for industrial and PCA85132U/2DA/Q1 for automotive applications. 2. Features and benefits  Single-chip LCD controller and driver for up to 640 elements  Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing  160 segment drives:  Up to 80 7-segment numeric characters  Up to 40 14-segment alphanumeric characters  Any graphics of up to 640 elements  May be cascaded for large LCD applications (up to 5120 elements possible)  160  4-bit RAM for display data storage  Software programmable frame frequency in steps of 5 Hz in the range of 60 Hz to 90 Hz  Wide LCD supply range: from 1.8 V for low threshold LCDs and up to 8.0 V for guest-host LCDs and high threshold (automobile) twi...